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Camshaft or cam characteristics

Subclass of:

123 - Internal-combustion engines

123900100 - POPPET VALVE OPERATING MECHANISM

123900150 - With means for varying timing

Patent class list (only not empty are listed)

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Class / Patent application numberDescriptionNumber of patent applications / Date published
123900180 Axially shiftable camshaft 23
Entries
DocumentTitleDate
20100154732CAMSHAFT ADJUSTER FOR AN INTERNAL COMBUSTION ENGINE - The invention relates to a camshaft adjuster for an internal combustion engine. In camshaft adjusters, spring elements which influence the moment conditions for the positional definition and influencing of the camshaft adjuster are usually arranged so as to lie on the inside of the housing.06-24-2010
20130025553CAMSHAFT ADJUSTER AND U-SHAPED SEALING ELEMENT FOR SEALING A RADIAL FACE OF A VANE OF A CAMSHAFT ADJUSTER - A camshaft adjuster (01-31-2013
20100012061VARIABLE VALVE TIMING SYSTEM - A valve timing control is executed by an ECU that controls an engine and an electric-motor ECU that controls an electric motor. The ECU and the electric-motor EDU serve different functions. The ECU sets the target phase of an intake valve based on the engine operating state, and prepares a rotational speed command value for the electric motor that serves as an actuator such that a phase feedback control loop, in which the intake valve phase is caused to match the target phase, is formed. The electric-motor EDU forms a feedback control loop for the motor speed, in which the electric power supplied to the electric motor is controlled such that the electric motor rotates in accordance with the rotational speed command value.01-21-2010
20110192366Phase adjustment device - In a phase adjustment device, in particular a valve train phase adjustment device, with a phase adjusting unit comprising a housing part, an input drive and an output drive which is phase-adjustable with respect to input drive and with a control actuator for controlling a base unit extending partially into the housing part, wherein the phase adjusting unit comprises a valve unit actuatable by the control actuator and having a valve housing in the form of a mounting screw by means of which the output drive is connected for rotation with a drive shaft, the valve housing is provided at its free end with a contoured recess for receiving a tightening tool, which has a corresponding outer contour for the transmission of tightening torques and also accommodating part of a valve spool.08-11-2011
20080257290Camshaft with Cams that Can be Rotated in Relation to Each Other, Especially for Motor Vehicles - The aim of the invention is to provide a reliable and inexpensive camshaft wherein the inner shaft and the outer shaft can be adjusted in a low-friction manner. For this purpose, a camshaft with cams that can be rotated in relation to each other, wherein at least one first cam (10-23-2008
20100116233ROTARY PISTON ADJUSTER HAVING A TORSION SPRING - A rotary piston adjuster for an internal combustion engine that includes an outer rotor which can be drive-connected to a crankshaft, an inner rotor which can be connected to a camshaft, and a torsion spring which is connected to the outer and inner rotors. The rotors can be adjusted rotationally about a common rotational axis, and a rotary angle position of the inner rotor with respect to the outer rotor can be adjusted by means of a hydraulic actuating mechanism. The torsion spring is connected by way of a hook-shaped first end section to a first connecting element which is connected in a rotationally fixed manner to the inner rotor. A pair of first supporting elements are connected to the inner rotor for supporting the torsion spring, which first supporting elements are arranged at an angular spacing in a range from 90° to 270° from the first connecting element.05-13-2010
20090211549CAM PHASE ADJUSTER WITH A PLURALITY OF SPRINGS - The camshaft adjuster is a plurality of return springs which are in parallel to one another in a spring.08-27-2009
20130074792Engine Lubrication Method - A four-cycle engine has a lightweight aluminum alloy engine block having a cylindrical bore and an enclosed oil reservoir formed therein. A crankshaft is rotatably mounted in the engine block for rotation about a crankshaft axis. A piston reciprocates within the bore and is connected to the crankshaft by a connecting rod. An oil pump driven by the cam gear, which mates with crank gear that is driven by crank shaft, inhales the oil from the oil reservoir and the valve chamber to splash lubricate into the cylinder bore. The engine is provided with a cylinder head assembly defining a compact combustion chamber having a pair of overhead intake and exhaust ports and cooperating intake and exhaust valves.03-28-2013
20130074793HYDRAULIC BRAKING DEVICE AND VALVE TIMING ADJUSTING APPARATUS - A sealing structure has a permanent magnet and a magnetic-flux guiding member for guiding magnetic flux of the permanent magnet to a brake shaft of a brake rotating member. The magnetic-flux guiding member surrounds an outer periphery of the brake shaft so as to form a sealing gap around the brake shaft. The sealing gap is communicated to a fluid chamber, in which magnetic viscous fluid is filled. A fluid sealing member is provided at the brake shaft at a housing outer side of the magnetic-flux guiding member to form an intermediate fluid chamber, in which an intermediate fluid made of non-magnetic liquid is filled.03-28-2013
20130081587Harmonic Drive Camshaft Phaser with a Harmonic Drive Ring to Prevent Ball Cage Deflection - A camshaft phaser includes a housing. A harmonic gear drive unit is disposed within the housing and includes a circular spline and a dynamic spline, a flexspline disposed within the circular spline and the dynamic spline, a wave generator disposed within the flexspline, and a rotational actuator connectable to the wave generator. A wave generator bearing includes an inner race with an inner race axial end, an outer race, a plurality of balls between the inner and outer races, and a ball cage. The ball cage includes an annular section disposed axial from the balls proximal to the inner race axial end and a plurality of ball separators such that consecutive balls are separated by one of the ball separators. A rigid support ring extends axially beyond the inner race axial end toward the annular section to limit axial distortion of the annular section.04-04-2013
20100000480CAMSHAFT ADJUSTER AND DEEP-DRAWING METHOD FOR PRODUCING A SEAL COVER FOR A CAMSHAFT ADJUSTER - A camshaft adjuster (01-07-2010
20130032112CONCENTRIC CAMSHAFT PHASER FLEX PLATE - A variable cam timing apparatus (02-07-2013
20130032111DISPLACEMENT GROOVE CONTOUR OF SLIDING CAM ASSEMBLIES OF AN INTERNAL COMBUSTION RECIPROCATING PISTON ENGINE - Engine with a crank mechanism and a cylinder head whose intake and exhaust channels are regulated by gas exchange valves activated by cams of at least one camshaft. The cams are sliding cams with at least one cam per sliding cam assembly arranged rotationally fixed but axially displaceable on a base shaft, and each having an actuator with an actuator pin for displacing the sliding cam assemblies into different axial positions via at least one displacement groove which cooperates with the pin. The displacement groove being helical shaped and having a run-in and a run-out region for the pin and a displacement flank and an opposing support flank. A detent device locks the sliding cam assemblies in different axial positions. A distance between the displacement flank and the support flank remains constant along the entire extent of the displacement groove parallel to the displacement direction of the sliding cam assembly.02-07-2013
20090178635VALVE TIMING ADJUSTER - A valve timing adjuster includes a first rotor, a second rotor, a spool valve, a connection passage, and a connection check valve. A spool of the spool valve is displaceable to a first position such that the first rotor is rotated relative to the second rotor. The spool is displaceable to a second position to hold the phase of a camshaft at a full phase. The connection passage connects a first output port with a second output port of the spool valve when the spool is positioned at the first position. The connection check valve of the connection passage allows working fluid to flow from the second output port toward the first output port.07-16-2009
20090159027VARIABLE VALVE ACTUATING APPARATUS FOR INTERNAL COMBUSTION ENGINE, AND CONTROLLER FOR VARIABLE VALVE ACTUATING APPARATUS - A variable valve actuating apparatus for an internal combustion engine includes an exhaust valve operating angle varying mechanism, and an exhaust valve timing varying mechanism. When the internal combustion engine is at rest, the exhaust: valve operating angle varying mechanism sets an exhaust valve operating angle relatively small, and the exhaust valve timing varying mechanism sets an exhaust valve opening timing and an exhaust valve closing timing relatively retarded. Accordingly, when the internal combustion engine is at rest, the variable valve actuating apparatus sets the exhaust valve closing timing at or close to top dead center so as to enable startup of the internal combustion engine.06-25-2009
20100108005INTERNAL COMBUSTION ENGINE - An internal combustion engine includes a control shaft, an actuator, and an oil accumulation portion. The control shaft is configured to vary a lift amount of an engine valve in accordance with a rotational position of the control shaft. The actuator is configured to drive the control shaft to make the lift amount of the engine valve to be a start lift amount before the engine is started. The actuator includes a worm wheel and a worm. The worm wheel is provided at the control shaft and is disposed in an engine body. The worm is disposed below the control shaft and engages with the worm wheel. The oil accumulation portion is provided at at least one of the control shaft and the worm wheel and is configured to drop oil onto the worm in accordance with the rotation of the control shaft when the engine is started.05-06-2010
20100108004ADJUSTABLE CAMSHAFT - The present invention relates to an adjustable camshaft (05-06-2010
20100108006CAMSHAFT FOR A VARIABLE LIFT VALVE TRAIN OF AN INTERNAL COMBUSTION ENGINE - A camshaft (05-06-2010
20090120392VALVE TIMING ADJUSTING APPARATUS - A valve timing adjusting apparatus includes a housing, a vane supporting portion, a vane member, a limiting member, a fitting hole, and an atmosphere communication hole. The housing is rotatable about a rotation axis. The housing includes a peripheral wall and side walls to define a receiving chamber. The vane member is received integrally with the vane supporting portion in the receiving chamber. The vane member defines an axial hole therein. The limiting member is reciprocably received in the axial hole. The fitting hole and the atmosphere communication hole are provided to one of the side walls. The fitting hole is communicated with atmosphere via the communication hole. The limiting member limits the vane member from rotating relative to the housing when one end of the limiting member is fitted with the fitting hole.05-14-2009
20090133650VALVE TIMING CONTROL APPARATUS - A guide passage is provided between a driving-side rotator and a driven-side rotator to supply lubricating fluid into an interior of the first rotator. A planetary gear is received in the driving-side rotator and is meshed with a gear portion of the driving-side rotator to make a planetary motion and thereby to change a relative phase between the driving-side rotator and the driven-side rotator. The guide passage guides the lubricating fluid toward a location on a radially outer side of the gear portion and the planetary gear and has a contaminant capturing space to accumulate contaminants contained in the lubricating fluid.05-28-2009
20100095919ELECTROMAGNET MOUNTING AND CONTROL SYSTEM FOR A VARIABLE CAMSHAFT PHASER CONTAINING MAGNETO-RHEOLOGICAL FLUID - A magneto-rheological fluid controlled camshaft phaser is provided having a stator with inwardly directed projections which define working spaces therebetween. The stator is adapted to be connected to the crankshaft via a timing gear and chain. A rotor is located radially inside the stator and is connected to the camshaft. Rotor lugs extend radially outwardly from the rotor into the working spaces, dividing them into first and second chambers on each side of the rotor lugs. A magneto-rheological fluid is located in the chambers, and the chambers on each side of each rotor lug are connected via a clearance space between the radially outer surface of the lugs and the inner surface of the stator located between the projections. The rotor is connected to the camshaft. An electromagnetic assembly is mounted adjacent to the stator and includes at least one electromagnet along with at least one ferrous focusing piece. In one embodiment, a plurality of the electromagnets are axially spaced apart from the working chambers holding the magneto-rheological fluid. In another embodiment the electromagnetic is formed by a coil which is radially spaced apart from the working chambers holding the magneto-rheological fluid. In each case, the magnetic field is passed from the electromagnet(s) and the ferrous focusing piece(s) into the phaser via a small air gap spacing between the electromagnet assembly and the moving camshaft phaser.04-22-2010
20100064998ADJUSTABLE CAMSHAFT WITH A PLANETARY GEAR - The present invention relates to an adjustable camshaft (03-18-2010
20100064995Engine valve operating system - In an engine valve operating system, a timing transmission chamber (03-18-2010
20120180740VALVE TIMING CONTROL DEVICE - A valve timing control device includes a first housing, a vane rotor, a second housing, a sealing plate, a regulating portion and a biasing portion. The sealing plate is interposed between the first housing and the second housing. The biasing portion biases the regulating portion toward the sealing plate. The sealing plate has a recess recessed from a base part toward the second housing at a predetermined position corresponding to the regulating portion in a relative rotation of the vane rotor. The regulating portion regulates the relative rotation of the vane rotor relative to the first housing and the second housing by being fitted with the recess of the sealing plate.07-19-2012
20100006045HYDRAULIC ACTUATOR CONTROL DEVICE AND HYDRAULIC ACTUATOR CONTROL METHOD - In a hydraulic actuator control device, a changing tendency of responsiveness of a hydraulic actuator to changes in the oil control valve (OCV) drive duty of a virtual OCV is stored as model control characteristics. The ratio of an actual OCV dead zone width to a virtual OCV dead zone width is calculated as an OCV variation correction coefficient. A basic control amount is calculated based on a deviation between an operating amount and a target operating amount of the hydraulic actuator. An actual OCV in-dead-zone control amount is obtained by correcting a virtual OCV in-dead-zone control amount with the OCV variation correction coefficient, and an actual OCV out-of-dead-zone control amount is calculated based on a virtual OCV out-of-dead-zone control amount. The actual OCV control amount is the sum of the actual OCV in-dead-zone control amount and the actual OCV out-of-dead-zone control amount.01-14-2010
20100326385DEVICE FOR VARIABLY ADJUSTING THE TIMING CONTROL OF GAS EXCHANGE VALVES OF AN INTERNAL COMBUSTION ENGINE - A device for variably adjusting the timing control of gas exchange valves of an internal combustion engine. The device has a hydraulic phase adjustment device, a control valve and an auxiliary pressure source. The phase adjustment device can be brought into driving connection with a crankshaft and a camshaft, the phase adjustment device has at least two counter-working pressure chambers, and a phase relation of the camshaft relative to the crankshaft is variably adjustable by charging of the pressure chambers with pressure medium. The control valve has at least one inflow port and a first and a second working port. The inflow port is connectable to a pressure medium pump, and the first working port is connectable to the first pressure chamber and the second working port to the second pressure chamber.12-30-2010
20100000479DEVICE FOR VARIABLY ADJUSTING CONTROL TIMES OF GAS EXCHANGE VALVES OF AN INTERNAL COMBUSTION ENGINE01-07-2010
20130087113ACTUATOR UNIT FOR SLIDING CAM SYSTEMS WITH ACTUATOR PINS CONTROLLED BY CONTROL NEEDLES - Reciprocating-piston internal combustion engine with intake and exhaust valves actuatable by sliding cams of a camshaft, arranged so that they are rotationally locked but axially moveable on a base shaft, and with an actuator unit for each sliding cam unit with at least one actuator pin for the displacement of the sliding cam units into different axial positions. The actuator pins are spring-loaded in the direction of the sliding cam unit and are fixable in their retracted position away from the sliding cam unit by latches having spring-loaded control needles that correspond to clamping bodies of the latches and are releasable via an electromagnet and permanent magnets that are in active connection with the control needles, and acceleration of the control needles defined by the spring force of each moving mass due to their springs is compensated by the acceleration of the actuator pins due to their allocated compressive springs.04-11-2013
20100132642INTERMEDIATE LOCK PIN TYPE VARIABLE VALVE TIMING UNIT FOR VEHICLE AND CONTINUOUSLY VARIABLE VALVE TIMING DEVICE USING THE SAME - An intermediate lock pin (ILP) ILP type variable valve timing unit may include an ILP type stator having at least one chamber formed therein, a rotor accommodated in the chamber to rotate relatively to the ILP type stator, and a lock maintaining portion provided in the chamber to maintain locking of the stator and the rotor when an engine stops working. The ILP type continuously variable valve timing device includes an ILP type variable valve timing unit, an ILP type oil control valve mounted on a cam cap engaged with a cylinder head to operate a lock maintaining portion of the variable valve timing unit, and an ILP type oil flow path branched from a main oil flow path of the cylinder head to guide the supply of oil to the variable valve timing unit through the cam cap and the ILP type oil control valve.06-03-2010
20090107433VALVE TIMING CONTROLLER - A control valve is provided with a spool and a supply port through which an operating oil is supplied. The spool is provided with an advance check valve and a retard check valve. The advance check valve restricts an operating oil flow flowing from the advance chamber to the supply port and permits an operating oil flow flowing from the supply port to the advance chamber when the advance chamber communicates with the supply port. The retard check valve restricts the operating oil flow flowing from the retard chamber to the supply port and permits the operating oil flow flowing from the supply port to the retard chamber when the retard chamber communicates with the supply port. When a rotational phase of the camshaft is held at a target phase region, the advance chamber and the retard chamber communicate with the supply port respectively.04-30-2009
20090301418VARIABLE VALVE SYSTEM FOR INTERNAL COMBUSTION ENGINE - A variable valve system for an internal combustion engine includes a drive shaft, a drive cam provided on the drive shaft, a link arm fitted on the outer periphery of the drive cam such as to rotate relative to the drive cam, a crank-shaped control shaft including a main shaft and an eccentric cam, an oscillating arm rotatably attached to the eccentric cam and oscillated by the link arm, and an oscillating cam connected to the oscillating arm via a link rod so as to actuate a valve. Lubricant is communicated from a main lubricant flow path in the drive shaft through three lubricant paths to sliding contact areas between the drive cam and the link arm, between the pin of the oscillating arm and the link arm, and between the eccentric cam and the oscillating arm.12-10-2009
20130055980VARIABLE VALVE ASSEMBLY FOR INTERNAL COMBUSTION ENGINE - Provided is a variable valve assembly for internal combustion engines which is capable of accurately determining whether an input rotational component and an output rotational component are fixed to each other. The variable valve assembly includes an intake camshaft for driving an intake valve and a crankshaft for driving the camshaft. The variable valve assembly has a function for changing the relative rotational phase of the intake camshaft with respect to the crankshaft and a function for fixing the intake camshaft to the crankshaft. The variable valve assembly determines whether the intake camshaft is fixed to the crankshaft, on the basis of a total amount of phase variation HCC or the amount of variation in the relative rotational phase of the intake camshaft with respect to the crankshaft.03-07-2013
20130055979DEVICE FOR CHANGING THE RELATIVE ANGULAR POSITION OF A CAMSHAFT WITH RESPECT TO A CRANKSHAFT OF AN INTERNAL COMBUSTION ENGINE - A device for changing the relative angular position of a camshaft with respect to a crankshaft of an internal combustion engine, wherein the drive element is rotatably mounted with respect to the crankshaft and is driven by the camshaft. Between the drive element and the camshaft at least two hydraulic chambers are formed, wherein the hydraulic chambers can be pressurized with a pressurized fluid in order to set a defined relative rotational position between the drive element and the camshaft. The device includes a housing element, wherein a pressure reservoir having a pressure chamber for pressurized fluid is arranged on the housing element and wherein the basic form of the pressure reservoir is substantially cylindrical. The pressure reservoir is disposed on the housing element in such a manner that the cylindrical lateral face thereof abuts a lateral portion of the housing element, wherein at least one fluid connection is formed between the housing element and the pressure chamber of the pressure reservoir.03-07-2013
20130055977INTERNAL COMBUSTION ENGINE WITH VARIABLE VALVE OPENING CHARACTERISTICS - An internal combustion engine with variable valve opening characteristics includes an outer camshaft, an inner camshaft, an urging device, a cam phase changing device, and a locking device. The outer camshaft includes a first cam. The inner camshaft includes a second cam. The cam phase changing device includes a first rotating member, a second rotating member, an advance-angle-side oil hydraulic chamber, and a retard-angle-side oil hydraulic chamber. A cam phase of the one of the outer camshaft and the inner camshaft is changed by switching between oil hydraulic circuits that communicate with the advance-angle-side oil hydraulic chamber and the retard-angle-side oil hydraulic chamber. The locking device is provided to connect another of the outer camshaft and the inner camshaft to the first rotating member with a predetermined cam phase.03-07-2013
20130055978CAMSHAFT ADJUSTER - A camshaft adjuster (03-07-2013
20130068184VALVE TIMING CONTROLLER - A variable-camshaft-timing mechanism is provided with a conically spiral spring valve as a check valve. When the conically spiral spring valve is opened, a plurality of flow passage clearances are formed between adjacent windings of the check valve, whereby a pressure loss of the working fluid can be reduced when passing through the check valve. When a reverse flow is generated, the check valve receives the reverse flow in its axial direction. Thus, the reverse flow of the working fluid can be utilized as a thrust force in a close direction of the check valve. A valve closing responsiveness of the check valve can be improved.03-21-2013
20130068185CONTROL DEVICE AND METHOD FOR CONTROLLING VARIABLE VALVE TIMING MECHANISM IN INTERNAL COMBUSTION ENGINE - Even when a crankshaft reversely rotates, a rotation phase of a camshaft can be accurately detected. A motor shaft rotation angle, a crankshaft forward rotation angle, a crankshaft reverse rotation angle, a final crankshaft rotation angle, a sprocket rotation angle of an electric VTC where a sprocket rotates at ½ rotation speed of the crankshaft and a stator of an electric motor are integrally rotated, a motor shaft rotation angle changing amount during a control period, a sprocket rotation angle changing amount, a motor shaft rotation angle changing amount, an intake camshaft rotation angle changing amount, and a current real rotation angle of the intake camshaft are calculated sequentially, and the VTC manipulated variable is computed so that the VTC real angle follows a VTC target angle.03-21-2013
20130068183HYDRAULIC CONTROL UNIT FOR USE IN VALVE TIMING CONTROL APPARATUS AND CONTROLLER FOR HYDRAULIC CONTROL UNIT - A hydraulic control unit is configured to switch among a first state where a discharge passage of a pump driven by an internal combustion engine communicates with both a phase-advance passage and a lock passage and simultaneously a phase-retard passage communicates with a drain passage, a second state where the discharge passage communicates with both the phase-retard passage and the lock passage and simultaneously the phase-advance passage communicates with the drain passage, and a third state where the phase-advance passage, the phase-retard passage, and the lock passage all communicate with the discharge passage. The hydraulic control unit is further switchable to a fourth state where the discharge passage communicates with both the phase-advance passage and the phase-retard passage and simultaneously the lock passage communicates with the drain passage.03-21-2013
20120186547VARIABLE VALVE TIMING DEVICE - A variable valve timing device includes a control valve for switching fluid communication among ports. The control valve includes a sleeve, a spool, a movable member, and resilient members. A first resilient member pushes the spool in both of the regions. A second resilient member acts on the spool via the movable member engaged with the spool in an advancing region. In a lock region, the movable member rests on the sleeve to enable the spool to move freely from the second resilient member. As a result, force acting on the spool can be restricted in the lock region. The movable member is supported from a radial inside by the spool and is radially distanced from the sleeve. As a result, it is possible to reduce a sliding resistance acting on the movable member.07-26-2012
20090288625VALVE TIMING CONTROL DEVICE - A valve timing control device includes a phase displacement restricting mechanism for creating a restricting state where relative rotational phase displacement of a driven side rotational member relative to a driving side rotational member is restricted within a permissible range and an unrestricting state where the restriction is released, a communication passageway for establishing communication between the phase displacement restricting mechanism and one of an advanced angle chamber and a retarded angle chamber, a valving element chamber provided midway the communication passageway, a valving element provided in the valving element chamber; the valving element selectively positioned to a closing state for closing the communication passageway to render the phase displacement restricting mechanism into the restricting state and an opening state for opening up the communication passageway to render the phase displacement restricting mechanism into the unrestricting state, and a leak passageway formed in the valving element and configured to allow leakage of fluid from an intermediate passage to the outside when the valving element is under the closing state.11-26-2009
20090272351VALVE DRIVE SYSTEM AND VALVE DRIVING METHOD - A valve drive system comprises a power transmitting mechanism (11-05-2009
20090272349VANE-TYPE PHASER - A vane-type phaser connected to drive an assembled camshaft includes a drive member and a driven member each connected to a respective one of the inner and outer shafts of the camshaft. A first of the members includes a disc with at least one arcuate cavity that is open at both axial ends. The second member includes two closure plates sealing off the axial ends of each cavity of the first member and at least one vane formed separately from the closure plates which is movably received in a respective cavity to divide the cavity into two variable volume working chambers. Each vane is secured at both its axial ends to the two closure plates.11-05-2009
20090272348VALVE TIMING CONTROL DEVICE AND ENGINE DEVICE AND VEHICLE INCLUDING THE SAME - When an engine speed of an engine is low, a force by a spring to bias a low speed lock pin in the direction in which the pin is to be inserted into a low speed pin introduction hole is greater than a centrifugal force acting on a weight. This causes the low speed lock pin to be inserted into the low speed pin introduction hole, so that the phase of an intake camshaft relative to an exhaust camshaft is fixed. When the engine speed of the engine is high, a force to bias a high speed lock pin in the direction in which the pin is to be inserted in a high speed pin introduction hole by a centrifugal force acting on a weight is greater than a force by a spring to bias the high speed lock pin in the direction in which the pin is pulled out from the high speed lock pin introduction hole. This causes the high speed lock pin to be inserted into the high speed pin introduction hole, so that the phase of the intake camshaft relative to the exhaust camshaft is fixed.11-05-2009
20090056656APPARATUS FOR THE VARIABLE SETTING OF CONTROL TIMES OF GAS-EXCHANGE VALVES OF AN INTERNAL COMBUSTION ENGINE - An apparatus (03-05-2009
20090056655VARIABLE VALVE TIMING CONTROL APPARATUS OF INTERNAL COMBUSTION ENGINE AND COOLING DEVICE FOR THE SAME - A variable valve timing control apparatus of an internal combustion engine includes a phase change mechanism configured to control engine valve timing by changing a relative angular phase between a timing sprocket and a camshaft by braking torque application via an electromagnetic brake. A flow control valve is arranged downstream of an oil supply passage that supplies cooling oil into an inside of the phase change mechanism. The flow control valve includes a valve element configured to control a flow rate of the oil supplied into the inside of the phase change mechanism, by changing an opening area of a valve bore communicating the oil supply passage by way of an advancing/retreating motion of the valve element in the valve bore, and a temperature-sensitive member configured to create the advancing/retreating motion of the valve element responsively to a temperature of the oil.03-05-2009
20090056654Valve actuating mechanism for an internal combustion engine, and cylinder head incorporating same - A valve actuating mechanism includes a first rocker arm moving mechanism including a first spring for urging left and right rocker arms from a first operation position side towards a second operation position side. The valve actuating mechanism also includes a second rocker arm moving mechanism including a second spring for urging the left and right rocker arms from the second operation position side towards the first operation position side. When a predetermined force is applied to the left and right rocker arms by one of the respective springs, the rocker arms are configured to be moved to operation positions corresponding to the applied force.03-05-2009
20120222638ROTOR, IN PARTICULAR FOR A CAMSHAFT ADJUSTER, METHOD FOR PRODUCING A ROTOR AND DEVICE FOR ADJUSTING THE ANGLE OF ROTATION OF A CAMSHAFT RELATIVE TO A CRANKSHAFT OF AN ENGINE09-06-2012
20120222637ENGINE ASSEMBLY INCLUDING CAM PHASER ASSEMBLY AID PIN - An engine assembly includes an engine structure, a camshaft supported on the engine structure, a first cam phaser coupled to a first axial end of the camshaft, and a locating pin. The camshaft includes a first shaft, a second shaft, a first cam lobe and a second cam lobe. The first shaft defines a first opening. The second shaft is supported within the first shaft and defines a second opening. The first cam lobe is located on and fixed for rotation with the first shaft. The second cam lobe may be located on the first shaft and fixed for rotation with the second shaft. During assembly, the first cam phaser is located on the camshaft and the locating pin may be inserted through the first and second openings to rotationally fix the first and second shafts. The first cam phaser is then secured to the camshaft.09-06-2012
20110011360ENGINE VALVE CONTROL DEVICE - An engine valve control device is applied to an engine valve control mechanism having a VVT (valve timing adjusting device), an OCV (control valve) that controls a flow of hydraulic oil supplied to the VVT, and an electromagnetic solenoid that controls an operation of the OCV according to a control duty (control command value). The engine valve control device calculates the control duty based on a holding duty, which occurs when an actual phase does not change but is held, and feedback correction values. The engine valve control device corrects the value of the holding duty in accordance with a steady-state deviation between the actual phase and a target phase to perform learning for storing and updating the holding duty value. If temperature of the hydraulic oil is low, the learning is prohibited even when the steady-state deviation is occurring.01-20-2011
20080283010CAM SHAFT PHASE SETTER AND VACUUM PUMP FOR AN INTERNAL COMBUSTION ENGINE - A device for adjusting the phase position of a cam shaft of an internal combustion engine and for supplying an assembly with a partial vacuum, said device comprising: a phase setter for adjusting the phase position of the cam shaft relative to a crankshaft of the internal combustion engine; a vacuum pump for the assembly; and an attachment housing for the vacuum pump, wherein the attachment housing is mounted on the internal combustion engine and forms a housing or at least a housing cover for the phase setter.11-20-2008
20090235886VARIABLE VALVE ACTUATING APPARATUS FOR INTERNAL COMBUSTION ENGINE AND CONTROL SHAFT FOR VARIABLE VALVE ACTUATING APPARATUS - A variable valve actuating apparatus for an internal combustion engine includes: a control shaft rotatably supported through a bearing to a body of the engine, and arranged to rotate about a center axis to control an operating state of an engine valve, the control shaft including; a control cam having a center which is off the center axis of the control shaft in a first direction; and a journal portion rotatably supported by the bearing, the journal portion having a center axis which is off the center axis of the control shaft in a second direction different from the first direction of the control cam.09-24-2009
20090235885VARIABLE VALVE ACTUATING APPARATUS - A variable valve actuating apparatus for an internal combustion engine includes a drive cam, a control shaft, a control cam, a rocker arm, and a swing cam. The drive cam is rotated by the internal combustion engine. The control shaft is supported for rotation about a rotation axis. The control cam is coupled to the control shaft, and is eccentric with respect to the rotation axis of the control shaft. The rocker arm is linked with the drive cam, and arranged to swing about the control cam in response to rotary motion of the drive cam. The rocker arm includes a recess slidably engaged with an outer radial periphery of the control cam. The swing cam is linked with the rocker arm, and arranged to swing in response to swinging motion of the rocker arm for opening and closing an engine valve of the internal combustion engine.09-24-2009
20090235884Vane-type cam phaser having dual rotor bias springs - A vane-type camshaft phaser for varying the timing of combustion valves including a first torsional bias spring disposed on a cover plate spring guide and grounded to the cover plate and to a slot in a spring retainer to urge the rotor toward an intermediate locking position from any position retarded of the locking position. A second torsional bias spring also anchored to the cover plate and spring retainer urges the rotor in the advance direction over the full range of phaser authority to compensate for added camshaft torque loads imposed by non-valve actuating functions such as driving a mechanical fuel pump.09-24-2009
20090044770Camshaft phaser wiper seal with integral spring - A wiper seal for preventing leakage of oil between advance and retard chambers formed between rotor vanes and stator lobes in a vane-type camshaft phaser is a monolithic structure made from a single material that includes a wiper element and a compressible spring element extending from the wiper element. The spring element is designed as a cantilevered arm and provides a sealing pressure to the wiper element. The wiper seal may further include a rib element as part of the monolithic structure that vertically extends the wiper element towards the spring element. The rib element assists in preventing over-compression of the cantilevered arm and in preventing tangling of a plurality of wiper seals during handling and shipping. The wiper seal is provided at the tip of each rotor vane and/or stator lobe of a vane-type camshaft phaser for varying the timing of combustion valves in an internal combustion engine.02-19-2009
20100064996Cam phaser helical bias spring having a square end for retention - A helical phaser bias spring including at least one linear region and an adjacent region having a radius of curvature less than that of the helix. A channel in the phaser receives the linear region of the spring and adjacent region to lock the spring to the phaser at either the rotor or the stator. Preferably, the spring includes two linear regions separated by a bend of about 90°. Additional linear regions are possible, separated by right and/or other angle bends. In a phaser rotor or stator, the geometric shape required to hold a spring end having a flat is easier to form with powdered metal tooling or diecasting than is a circular, radial, or axial shape for receiving a spring tang as in the prior art, the packaging volume required for the spring is smaller, and spring friction is lowered.03-18-2010
20100064997CONTINUOUS CAMSHAFT PHASE SHIFTING APPARATUS - A phase shift mechanism (A) for controlling a phase shift angle between a camshaft (03-18-2010
20090013948APPARATUS FOR THE VARIABLE SETTING OF THE CONTROL TIMES OF GAS EXCHANGE VALVES OF AN INTERNAL COMBUSTION ENGINE - An apparatus (01-15-2009
20090013947Simulated Cam Position for a V-Type Engine - A method is provided for estimating a cam shaft position of a V-type internal combustion engine, the engine comprising cylinders in a first bank and a second bank, a first variable cam timing phaser coupled to said first cam shaft, a second variable cam timing phaser coupled to said second cam shaft, a crankshaft position sensor, and a first cam position sensor in the first bank. The method comprises measuring average crankshaft acceleration characteristics of the cylinders in the first bank and average crankshaft acceleration characteristics of the cylinders in the second bank using the crankshaft position sensor during a power stroke; detecting a cam phasing of the first bank using the first cam position sensor; and determining a cam phasing of the second bank based on the cam phasing of the first bank and the average acceleration characteristics of the cylinders in the first bank and the second bank.01-15-2009
20090007867Variable valve train for an internal combustion engine - The invention provides a variable valve train for an internal combustion engine, in which attachment and detachment of a rotation drive source can be performed without an affect on a transmission mechanism and environment. The variable train system comprises a variable valve system that is fixed to a cylinder head and implements variable control on valve drive outputs according to displacement that is inputted to a control input member; a rotation drive source that outputs control rotation for setting valve properties from an output shaft; and a transmission mechanism that is located on the side of the variable valve system, receives the control rotation outputted from the output shaft with an input shaft, and transmits the control rotation to the control input member, wherein the rotation drive source is detachably fixed to an engine body; the output shaft of the rotation drive source is coupled to the input shaft by using a coupling that moves the output shaft toward the input shaft and disengageably couples the output shaft to the input shaft; and the coupling transmits the rotation of the output shaft to the input shaft while allowing misalignment between the output shaft and the input shaft.01-08-2009
20120234275CAMSHAFT PHASER WITH COAXIAL CONTROL VALVES - A camshaft phaser is provided for varying the phase relationship between a crankshaft and a camshaft in an engine. The camshaft phaser includes a stator having lobes. A rotor is disposed within the stator includes vanes interspersed with the stator lobes to define alternating advance and retard chambers. A lock pin is provided for selective engagement with a lock pin seat for preventing relative rotation between the rotor and the stator. Pressurized oil disengages the lock pin from the seat while oil is vented for engaging the lock pin with the seat. A phase relationship control valve is coaxial with the rotor and controls the flow of oil into and out of the chambers. A lock pin control valve is coaxial with the phase relationship control valve and controls the flow of oil to and from the lock pin. The control valves are operational independent of each other.09-20-2012
20100089350CAMSHAFT PHASER FOR THE INNER CAMSHAFT OF A CONCENTRIC CAMSHAFT ASSEMBLY - A camshaft phaser assembly for a concentric camshaft that adjusts the relative rotational position of the inner camshaft relative to the outer camshaft and the crankshaft of an internal combustion engine is provided. The phaser has an inner rotor with radially outwardly extending vanes which is attached to the inner camshaft. The rotor is surrounded by a stator having radially inwardly directed projections which contact the outer surface of the rotor and form working spaces into which the vanes extend. The vanes divide the working spaces into first and second sets of pressure chambers which can be pressurized with a hydraulic medium in order to rotate the rotor in an advancing or retarding direction. Front and rear covers are attached to the stator and define the front and rear sides of the pressure chambers. The timing gear or timing belt pulley is connected to the stator. The rear cover includes a splined opening. The front end of the outer camshaft includes a splined connection complementary to the splined opening in order to provide a positive fit connection between the outer camshaft and the rear cover for direct transfer of the timing chain or belt loads into the outer camshaft.04-15-2010
20100089352CAMSHAFT PHASER AND DRIVE ADAPTER FOR A CONCENTRIC CAMSHAFT - A camshaft adjuster for a concentric camshaft assembly of an internal combustion engine is provided. The adjuster includes a stator that is connected to the timing gear, and a rotor located within the stator having a plurality of vanes that extend into spaces created between inwardly directed projections of the stator to define chambers on each side of the vanes. Front and rear sidewalls are connected to the stator and form the front and rear walls of the chambers. An outer cover connects to the stator to the inner camshaft via a drive adapter, and the rotor is connected to the outer camshaft. Radial loads acting on the timing gear are transmitted from the stator to the rotor and into the outer camshaft. The drive adapter includes an open cylindrical body having first and second ends. The first end includes a slot or recesses in which a timing feature of the cover engages. The second end has a keyed portion configured to matingly engage a corresponding portion of the inner camshaft.04-15-2010
20100089353CAMSHAFT PHASER FOR A CONCENTRIC CAMSHAFT - A camshaft adjuster for a concentric camshaft of an internal combustion engine is provided. The adjuster includes a stator that is connected to the timing gear, and a rotor located within the stator and connected to the outer camshaft. The rotor includes a plurality of vanes that extend into spaces created between inwardly directed projections of the stator that slidingly engage the outer surface of the rotor to define first and second sets of chambers on each side of the vanes. Front and rear sidewalls are connected to the stator and form the front and rear walls of the chambers. An outer cover is connected to the stator via axially extending fasteners and is adapted to be connected to the inner camshaft. Radial loads acting on the timing gear are transmitted from the stator to the rotor and into the outer camshaft.04-15-2010
20100031906CAMSHAFT PHASER INTERMEDIATE LOCKING PIN AND SEAT - A vane-type camshaft phaser for an internal combustion engine, in which an intermediate locking pin and seat are provided for locking the camshaft phaser at a position intermediate of its full advanced and retard positions, one of the locking pin and seat having a non-circular cross section, and the cross-sectional shapes of the locking pin and seat being substantially dissimilar to each other.02-11-2010
20110079190Camshaft unit - In a camshaft unit, particularly of an internal combustion engine, comprising a camshaft connected to a drive unit to be driven thereby, a phase displacement unit including an actuating gear and a control unit with a rotor and a stator unit in the form of a brake element for adjusting a phase relation between the drive unit and the camshaft, and a bearing device for supporting part of the control unit, the bearing device is designed to accommodate radial tolerances between the stator element and the rotor element.04-07-2011
20110011359CONTROL STRUCTURE FOR ELECTRO-MECHANICAL CAMSHAFT PHASE SHIFTING DEVICE - A camshaft phase shifting device (01-20-2011
20090101094VARIABLE VALVE TIMING SYSTEM - An ECU transmits a pulsed operation command signal, indicating operation commands for an electric motor used as a VVT actuator, to an electric-motor EDU. The electric-motor EDU recognizes the combination of the direction in which the actuator should be operated (actuator operation direction) and the control mode based on the duty ratio of the operation command signal, and the rotational speed command value based on the frequency of the operation command signal. The electric-motor EDU controls the electric motor according to the control commands. The duty ratio indicating the combination is set such that even if the duty ratio is falsely recognized, a false recognition concerning the actuator operation direction is prevented, such false recognition causing the valve phase to change in an undesirable direction, and even if the actuator operation direction is falsely recognized, the rate of change in the phase is restricted.04-23-2009
20100175648MECHANICAL VARIABLE CAMSHAFT TIMING DEVICE - A device for selectively changing phase relationship between first and second rotating shafts in an internal combustion engine where the first shaft is secured for rotation with a worm carrier assembly and the second shaft is secured for rotation with a worm gear includes first and second worms disposed for rotation within the worm carrier assembly and having torsional preloads with opposite hands of rotation and meshing with the worm gear. An actuator turns the first and second worms in a first direction to advance rotation of the second shaft relative to the first shaft and turns the first and second worms in a second direction to retard rotation of the second shaft relative to the first shaft.07-15-2010
20110061619VARIABLE VALVE TIMING CONTROLLER FOR INTERNAL COMBUSTION ENGINE - A variable valve timing controller for an internal combustion engine includes a hydraulic variable valve timing unit, a lock pin, and a hydraulic control valve. The lock pin is configured to lock the VCT phase at an intermediate lock position. The variable valve timing controller controls a valve drive electric current that is used for actuating the hydraulic control valve. The controller controls the valve drive electric current based on a first control characteristic in the operation of the hydraulic control valve under a first control range. The controller controls the valve drive electric current based on a second control characteristic in the operation of the hydraulic control valve under a second control range. The first control characteristic is different from the second control characteristic.03-17-2011
20100170461VARIABLE VALVE TIMING APPARATUS - An intake VVT mechanism includes: link mechanisms and connected to an intake camshaft and operated to change a phase of an intake valve; and a control pin sliding on a guide plate along a guide groove to allow the link mechanism to operate; a control pin sliding on the guide plate along a guide groove to allow the link mechanism to operate. The control pin is detached from an end of the guide groove when the control pins and are moved in a direction allowing the phase to be retarded until the control pin abuts against an end of the guide groove.07-08-2010
20110290205MOTOR CONTROL APPARATUS, VALVE TIMING REGULATING APPARATUS AND INVERTER CIRCUIT ENERGIZATION METHOD - An energization control circuit compares a target rotation direction of a motor and an actual rotation direction of a motor detected based on rotation detection sensors. If the compared rotation directions are in disagreement, the energization control circuit switches over an inverter control mode from 120-degree energization to 180-degree energization to extend an on-period of a high-side switching element of an inverter circuit to an advance phase side. Thus, the high-side switching element is turned on, when a low-side switching element of the same phase is in a turned-off state. A free-wheeling current is allowed to flow through the high-side switching element rather than through a free-wheeling diode of the high-side switching element.12-01-2011
20100089349Valve Timing Adjusting Device - A valve timing adjusting device includes a first rotor rotating integrally with a crankshaft; a second rotor secured integrally with an intake or exhaust camshaft; a first hole formed passing through radially to a shoe formed inside the first rotor; a second hole formed through the shoe, intersecting the first hole; a coil spring pressing a lock pin received in the first hole to thereby engage the lock pin into a concavity formed on the outer peripheral surface of the second rotor; and a shaft inserted into the second hole in order to prevent the coil spring from dashing out.04-15-2010
20110214634VARIABLE VALVE TIMING APPARATUS FOR INTERNAL COMBUSTION ENGINE - A variable valve timing apparatus includes a variable valve timing mechanism that includes a first rotating body and a second rotating body that are rotating bodies that rotate about the same rotational axis; advance chambers and retard chambers that serve as hydraulic pressure chambers into which hydraulic fluid is supplied from an oil pump; and a discharge passage that discharges hydraulic fluid from the hydraulic pressure chambers. At least one of the hydraulic pressure chambers that is communicated with the discharge passage in a position vertically higher than the rotational axis when the first rotating body and the second rotating body have stopped rotating at a given phase, and from which hydraulic fluid is discharged into the discharge passage, is placed in a state constantly open to ambient air regardless of the phase at which the first rotating body and the second rotating body have stopped.09-08-2011
20110214633DURATION EXTENDER VARIABLE VALVE ACTUATION - A hydro-mechanical variable valve actuation (or VVA) system that controllably extends the valve duration.09-08-2011
20100101516DEVICE FOR THE COMBINED LOCKING AND ROTATION ANGLE LIMITATION OF A CAMSHAFT ADJUSTER - A locking and rotation angle device for locking and setting maximum rotational adjustability of a drive part fixed to the crankshaft and a driven part fixed to the camshaft of a camshaft adjuster. The driven part is pivotably adjusted to the drive part, which has a locking bar received in the drive or driven part, a locking bar member formed in the respectively other part, and a rotation angle limiting member formed in the correspondingly other part. Limiting wall sections serve as stops for the locking bar for adjusting a maximum rotational adjustability. The locking bar member, rotation angle limiting member, and locking bar are disposed such that the locking bar is displaced via the displacement mechanism into a locking position, engaging into the locking bar member, and into an unlocking position, in which it is released by the locking bar member and engages in the rotation angle limiting member.04-29-2010
20090101093VALVE TIMING CONTROL DEVICE - A valve timing control device includes a driving side rotational member, a driven side rotational member, a retarded angle chamber, an advanced angle chamber, a first control valve, a supply passage supplying the fluid to the first control valve, a first pump pumping the fluid to a vapor liquid separating portion, a second pump pumping the fluid in the vapor liquid separating portion to the first control valve, a discharge passage discharging the fluid from the first control valve toward the operational fluid reservoir, and a second control valve provided at the discharge passage and operated to switch the discharge passage between a first discharge passage is discharging the fluid discharged from the first control valve to the operational fluid reservoir and a second discharge passage flowing the fluid to be drawn into the first pump.04-23-2009
20100212617INTERNAL COMBUSTION ENGINE WITH VARIABLE VALVE GEAR - In an engine with a cam phase change mechanism which is disposed on one end portion of an intake camshaft and variably changes a phase of a drive cam of an intake valve relative to a crankshaft, the cam phase change mechanism is configured so that two vane-type hydraulic actuators of which variable-phase torques produced at the same supplied oil pressure are different are arranged axially relative to the intake camshaft.08-26-2010
20100212619INTERNAL COMBUSTION ENGINE WITH VARIABLE VALVE GEAR - Each cylinder is provided with a first intake valve and a second intake valve, and a first intake cam for driving the first intake valve and a second intake cam for driving the second intake valve are coaxially pivotally supported on an intake camshaft. A first cam phase change mechanism which varies respective phases of the first and second intake cams relative to a crankshaft of the internal combustion engine is combined with a second cam phase change mechanism which varies a phase of the second intake cam relative to the first intake cam. The second cam phase change mechanism is set to have a variable-phase angular range wider than that of the first cam phase change mechanism.08-26-2010
20110168113CAMSHAFT ADJUSTMENT DEVICE FOR AN INTERNAL COMBUSTION ENGINE - A device for variable adjustment of the timing of gas exchange valves of an internal combustion engine, which has a hydraulic phase shifting device, a camshaft and a pressurizing medium distributor. The phase shifting device can come into drive linkage with a crankshaft and is rigidly connected to the camshaft. A phase position of the camshaft relative to the crankshaft can be variably adjusted by the phase shifting device. The interior of the camshaft has a cavity that communicates with one or more camshaft bearings which are separate from a rotating pressurizing medium conveyor. The pressurizing medium distributor is disposed in a receiving area of the camshaft. The camshaft has an opening in the area of the pressurizing medium distributor, which communicates with the interior of the camshaft and the pressurizing medium conveyor. A pressurizing medium path is inside the camshaft, which communicates the opening and hydraulic phase shift device.07-14-2011
20120024247HARMONIC DRIVE CAMSHAFT PHASER WITH PHASE AUTHORITY STOPS - A camshaft phaser includes a housing with a harmonic gear drive unit disposed therein. The harmonic gear drive unit includes a circular spline and a dynamic spline, a flexspline disposed radially within the circular spline and the dynamic spline, a wave generator disposed radially within the flexspline, and a rotational actuator connectable to the wave generator. One of the circular spline and the dynamic spline is fixed to the housing. A hub is rotatably disposed radially within the housing and attachable to the camshaft and fixed to the other of the circular spline and the dynamic spline. A first arcuate input stop member is rotatable with one of the circular spline and the dynamic spline and is received within a first arcuate output opening defined by at least a first arcuate output stop member rotatable with the other of the circular spline and the dynamic spline.02-02-2012
20090145386VALVE TIMING ADJUSTING APPARATUS - A valve timing adjusting apparatus for an internal combustion engine having a bearing includes a camshaft, a housing, a vane rotor, a control valve, and a fastening member. The fastening member is mounted on an axial end portion of the camshaft on a side of the vane rotor opposite from the bearing. The vane rotor is coaxially fastened to the camshaft between the fastening member and a step portion, which is provided to the camshaft on a side of the bearing. A sleeve of the control valve is coaxially received in an axial hole of the camshaft, which opens at an end surface of the end portion of the camshaft. Each of the advance output port and the retard output port is communicated with a corresponding one of the advance chamber and the retard chamber through the camshaft.06-11-2009
20080271690CAMSHAFT ADJUSTER FOR AN INTERNAL COMBUSTION ENGINE WITH INTEGRATED VALVE SLIDE - A camshaft adjuster (11-06-2008
20110162604PHASER BUILT INTO A CAMSHAFT OR CONCENTRIC CAMSHAFTS - A camshaft assembly for an internal combustion engine comprising: a hollow outer shaft 07-07-2011
20090090322VARIABLE VALVE TIMING CONTROL APPARATUS OF INTERNAL COMBUSTION ENGINE - A variable valve timing control apparatus of an internal combustion engine has a drive rotary member rotated by an engine crankshaft, a driven rotary member fixedly connected to a camshaft and transferring a turning force from the drive rotary member to the camshaft, and a phase-change mechanism changing a relative rotational phase between the drive and driven rotary members and having an intermediate rotary member installed between the drive and driven rotary members for a relative rotational phase control. The variable valve timing control apparatus further has a holding mechanism and a releasing mechanism. The holding mechanism forces the intermediate rotary member and holds the relative rotational phase between the drive and driven rotary members, and the releasing mechanism releases a holding state of the holding mechanism.04-09-2009
20100116231VARIABLE VALVE GEAR FOR INTERNAL COMBUSTION ENGINE - Disclosed is a variable valve gear comprising a camshaft phase change mechanism, which variably controls a phase of an intake cam with respect to a crankshaft, and a variable valve lift mechanism, which changes an opening timing of an intake valve more than a closing timing and basically continuously varies a lift and an open period of the intake valve. The lift and the open period are set lest the intake valve interfere with a piston of an engine, with the phase controlled to be most advanced by the camshaft phase change mechanism and the lift controlled to be maximal by the variable valve lift mechanism.05-13-2010
20100089351CAMSHAFT PHASER FOR A CONCENTRIC CAMSHAFT - A camshaft adjuster for a concentric camshaft assembly of an internal combustion engine is provided. The adjuster includes a stator that is connected to the timing gear, a rotor located within the stator and connected to the outer camshaft. The rotor includes a plurality of vanes that extend into spaces created between inwardly directed projections of the stator to define first and second sets of chambers on each side of the vanes. Front and rear sidewalls are connected to the stator and form the front and rear walls of the chambers. An outer cover connects to the stator to the inner camshaft. Radial loads acting on the timing gear are transmitted from the stator to the rotor and into the outer camshaft.04-15-2010
20110168114VALVE TIMING CONTROL APPARATUS - A valve timing control apparatus includes a phase holding mechanism for holding relative phase between an inner peripheral member and an outer peripheral member to a predetermined intermediate phase between a most advanced angle phase and a most retarded angle phase, a fluid feeding device for feeding fluid to an advanced angle chamber or a retarded angle chamber through a first fluid passageway or a second fluid passageway, and a fluid control valve for switching over the passage for the fluid discharged from the fluid feeding device to either the first fluid passageway or the second fluid passageway and controlling the feeding amount of the fluid. The phase holding mechanism is configured to have its holding state for holding the relative phase released by a fluid pressure of the first fluid passageway or the second fluid passageway to whichever the fluid control valve starts the feeding of the fluid. After releasing of the holding state of the relative phase, this releasing state is maintained by a fluid pressure applied thereto from at least one of the first fluid passageway and the second fluid passageway.07-14-2011
20080283009Camshaft Adjuster - Impurities of a lubricant in traditional camshaft adjusters can cause a problem, leading to impairment in the function and service life of the camshaft adjuster. In order to address this, flow channel areas are provided in the lubricant circuit, which include a dead chamber (11-20-2008
20090120393VARIABLE VALVE SYSTEM FOR INTERNAL COMBUSTION ENGINE - A variable valve system has a drive shaft having a drive cam, a rockable cam opening/closing an engine valve, a transmission mechanism converting torque of the drive cam into a rocking motion and transmitting it to the rockable cam, a control shaft, and a control cam. When the variable valve system varies a valve lift amount of the engine valve by changing the rocking fulcrum of the transmission mechanism, the rocking fulcrum during a small valve lift control is set in an area outside an arc locus drawn with the drive shaft being a center of the arc and passing through a rocking fulcrum position positioned at a maximum valve lift and also inside an arc locus drawn with a pivot of the one end side of the transmission mechanism being a center of the arc and passing through the rocking fulcrum position positioned at the maximum valve lift.05-14-2009
20090120391Device For Varying The Control Times Of An Internal Combustion Engine - The invention relates to a device (05-14-2009
20090090323VARIABLE VALVE OPENING PROPERTY INTERNAL COMBUSTION ENGINE - In a variable valve opening property internal combustion engine, a control shaft (04-09-2009
20090090321CAMSHAFT ADJUSTER FOR AN INTERNAL COMBUSTION ENGINE - A camshaft adjuster (04-09-2009
20080210183Adjusting device for an internal combustion engine, in particular camshaft adjusting device - In an adjusting device for an internal combustion engine, in particular a camshaft adjusting device, an adjusting unit is provided which comprises at least one currentless sensor unit for carrying out in at least one mode an adjustment as a function of a momentary phase angle between cooperating relatively rotatable members.09-04-2008
20090272347DEVICE FOR MODIFYING CONTROL TIMES OF AN INTERNAL COMBUSTION ENGINE11-05-2009
20090272350CAMSHAFT ADJUSTER FOR AN INTERNAL COMBUSTION ENGINE - A camshaft adjuster (11-05-2009
20100126448VALVE DRIVE OF AN INTERNAL COMBUSTION ENGINE - A valve drive of an internal combustion engine with a camshaft including cams for actuating gas-exchange valves, 05-27-2010
20090288624DEVICE FOR MODIFYING THE CONTROL TIMES OF AN INTERNAL COMBUSTION ENGINE11-26-2009
20080236527Device for Modifying the Control Times of an Internal Combustion Engine10-02-2008
20090293826VARIABLE PHASE MECHANISM - A variable phase mechanism is described which comprises a drive member rotatable about an axis, first and second driven members rotatable in synchronism with the drive member, an actuator for rotating the first driven member relative to the drive member to vary the phase of rotation of the first driven member relative to the drive member, and a yoke coupling the second driven member for rotation with one of the drive member and the first driven member and movable transversely relative to the axis of the drive member to vary the phase of rotation of the second driven member relative to the drive member. In the invention, transverse movement of the yoke is effected by means of interaction between the other of the drive member and the first driven member and a radially outwards facing surface defined by the yoke.12-03-2009
20100126449CONTROL SYSTEM OF INTERNAL COMBUSTION ENGINE - A control system of an internal combustion engine changing an operating timing of a valve in an internal combustion engine where a valve drive cam (05-27-2010
20100126450CAMSHAFT ADJUSTER FOR AN INTERNAL COMBUSTION ENGINE WITH IMPROVED DESIGN OF THE PRESSURE CHAMBERS - A camshaft adjuster which has an improved configuration of the pressure chambers and of the adjoining pressure chamber surfaces is provided, that is attached at the end side to a camshaft (05-27-2010
20080251042Device for Controlling Phase of Cam Shaft in Internal Combustion Engine and Phase Controlling device - A device for controlling a phase of a cam shaft in an internal combustion engine has a structure which can return a phase of a cam shaft to an intermediate position on the basis of its own power by utilizing a variable torque applied to a cam shaft at a time of starting an engine so as to lock, and has a high practicability and mass production performance. This device is provided with a first rotating body rotating together with a cam shaft, a second rotating body provided coaxially in the first rotating body so as to control a phase angle and rotating together with a sprocket, and a fixing mechanism fixing the phase angle, in which the fixing mechanism has a wedge member wherein a wedge-shaped portion is formed, the first rotating body and the second rotating body have contact surfaces brought into contact with the wedge member, and at least any one of the contact surfaces of the first rotating body and the second rotating body is formed such that a distance from a center of rotation to an application line of a load applied to the contact surface is smaller than a distance from the center of rotation to an application point of the load on the contact surface.10-16-2008
20110197840ENGINE EQUIPPED WITH VARIABLE VALVE TIMING MECHANISM - An engine is equipped with a variable valve timing mechanism, which is operated by a working oil to change rotating phase of a camshaft to thereby change the valve timing, and includes an oil passage formed in a chain case and an oil passage formed in the cylinder head so as to be communicated with the hydraulic actuator, in which the oil passages communicate with each other at a contact surface between the chain case and the cylinder head, and the working oil is supplied from the hydraulic control valve to the hydraulic actuator. The variable valve timing mechanism further includes a block disposed independent of the chain case between an inner wall of the chain case and an end wall of the cylinder head, and an intermediate oil passage formed in the block and including communication openings in which one of the communication openings is offset in position from another one thereof.08-18-2011
20090266323VARIABLE VALVE LIFT APPARATUS - A variable valve lift apparatus may include a cam that is disposed to a camshaft and rotates, a rocker arm that is disposed to the camshaft and in which a relative rotation angle of the rocker arm around the camshaft is variable, a cam follower that contacts the cam, receives rotation of the cam, and pivots around the rocker arm, and a swing arm that contacts the cam follower and drives a valve.10-29-2009
20090266322Vane-type cam phaser having staged locking pins to assist intermediate position locking - A vane-type camshaft phaser including a bias spring to urge the rotor toward an intermediate locking position from any rotational position retarded of the locking position. The rotor comprises non-coaxially acting primary and secondary locking pins for mating with primary and secondary locking pin seats in the phaser stator. The primary seat is elongated and is readily located by the primary locking pin to provide a first limit to the rotor phase angle authority in the retard direction. Camshaft torque reversals cause the rotor phase angle to dither. With each torque reversal the secondary locking pin passes over its seat, allowing multiple opportunities for re-engagement. The clearance of the secondary locking pin to its seat defines the rotary lash in the phaser.10-29-2009
20110197839INTERNAL COMBUSTION ENGINE WITH VARIABLE VALVE DEVICE - An engine with a variable valve device includes cylinders each provided with a plurality of intake valves, an outer camshaft for driving first intake cams, an inner camshaft arranged coaxially with the outer camshaft for driving second intake cams, and a cam phase change mechanism arranged at one end of the outer and inner camshafts and capable of varying the phase difference between the two camshafts. A first cam sensor for detecting the rotational angle of the outer camshaft and a second cam sensor for detecting the rotational angle of the inner camshaft are arranged close to the one end of the camshafts.08-18-2011
20120291734VALVE TRAIN FOR INTERNAL COMBUSTION ENGINES FOR ACTUATING GAS EXCHANGE VALVES - A valve train device for switching a lift of gas exchange valves of an internal combustion engine includes a camshaft. A cam group includes at least two cams disposed on the camshaft. At least one lever is mounted axially displaceably relative to the camshaft and is in contact with one of the at least two cams and includes an actuation region for a direct or indirect actuation of at least one gas exchange valve. An adjustment unit is operatively connected to the lever so as to displace the lever. The unit includes at least one rotatable adjustment shaft, at least one sleeve having at least one guide track mounted on the shaft non-rotationally and axially displaceably, an engagement element fixed to a housing and engaging permanently in the at least one guide track and supporting the at least one sleeve with respect to the housing, and a further engagement element11-22-2012
20080283008INTERNAL COMBUSTION ENGINE EMPLOYING VARIABLE COMPRESSION RATIO MECHANISM - An internal combustion engine which varies a compression ratio by changing a top dead center position of a piston, including an engine block, the piston disposed in the engine block, a crank shaft supported by the engine block, and a plurality of links connecting the piston and the crank shaft. A first control shaft and a second control shaft respectively are supported by the engine block, each of which has a main shaft portion rotatably supported by the engine block and an eccentric portion eccentric to the main shaft portion, the eccentric portions of the first control shaft and the second control shaft deviating from axes of the respective main shaft portions in mutually different directions when viewed from an axial direction. A plurality of control links connect any one of the plurality of links connecting the piston and the crank shaft, and the first control shaft and the second control shaft. A driving unit is provided at least one of the first control shaft and the second control shaft, that rotates the control shaft.11-20-2008
20080289595Camshaft Adjuster Comprising a Locking Mechanism - A camshaft adjuster (11-27-2008
20080289596Apparatus for preventing leakage across rotor vanes in a vane-type camshaft phaser - In a first embodiment of a camshaft phaser, the rotor is split along an equatorial plane thereof, defining first and second rotor portions. A resilient seal is compressively disposed between the rotor portions to prevent leakage therebetween and to urge the rotor vanes against the cover plate and sprocket surfaces to prevent leakage around the vanes. Preferably, the seal includes radial seal elements to seal against the stator wall. Preferably, pressurized hydraulic fluid can enter between the first and second rotor portions and thereby assist the resilient seal in urging the rotor portions apart. In a second embodiment, the rotor is not split, and a resilient seal is provided on at least one axial face of the rotor vanes to seal the rotor vanes against the cover plate and sprocket surfaces.11-27-2008
20080308053Variable Valve Drive Device, Engine, and Motorcycle - In a variable valve drive device, a cam sprocket made to rotate by a driving force transmitted from a crankshaft. An eccentric plate is arranged at one end side of the cam sprocket in the rotation axis direction thereof, and is made to rotate around an axis in the same direction as the rotation axis of the cam sprocket. The axis of the eccentric plate is shiftable from the axile center of the rotation axis to an eccentric position. A variable camshaft is made to rotate around its rotation axis by the eccentric plate, and when the eccentric plate rotates the variable camshaft at the eccentric position, the rotational phase difference thereof with respect to the cam sprocket periodically fluctuates. An intake cam block is arranged at the other end side of the cam sprocket in the rotation axis direction thereof, and is made to rotate by the variable camshaft with the same phase as that of the variable camshaft to drive an intake valve.12-18-2008
20080308054Camshaft Adjuster - A lubricant circuit of a camshaft adjuster is provided. In conventional camshaft adjusters, lubricant is supplied from a cylinder head to the camshaft adjuster via a supply channel (12-18-2008
20110023805VARIABLE VALVE TIMING CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE - A variable valve timing control apparatus is provided for an internal combustion engine that has a crankshaft, a camshaft, a hydraulic variable valve timing unit, a lock pin, and a hydraulic control valve. The hydraulic control valve is configured to control oil pressure that actuates the variable valve timing unit and the lock pin. The control apparatus switches a control, based on an operational state, between (a) a variable cam timing (VCT) phase control for controlling the VCT phase to a target phase and (b) a lock pin projection control for allowing the lock pin to project. The control apparatus executes, when an abnormality occurs, a foreign object release control for changing a control amount of the hydraulic control valve based on a predetermined pattern, wherein the control apparatus changes the predetermined pattern depending on the abnormality in the execution of the foreign object release control.02-03-2011
20110023804VARIABLE VALVE TIMING CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE - A variable valve timing control apparatus for an engine includes a hydraulic variable valve timing unit and an oil pressure control device. The variable valve timing unit has a plurality of control ranges and an ambiguity range. The apparatus learns a hold control amount for each of the plurality of control ranges when a predetermined condition is satisfied, and the hold control amount is required to control the oil pressure control device to maintain the actual VCT phase. When the target VCT phase is positioned in the ambiguity range, if a difference between the actual and target VCT phases is stably greater than a predetermined value, the apparatus switches the presently-used hold control amount learning value of one control range into the learning value for the other control range in order to compute the VCT control amount.02-03-2011
20110023803VALVE TRAIN OF INTERNAL COMBUSTION ENGINE - A valve train of an internal combustion engine having a swing of a link mechanism that is stabilized to stabilize the operating characteristics of an engine valve. A camshaft is provided together with a valve operating cam pivotally supported by the camshaft so as to operatively open and close an engine valve. A link mechanism allows a drive cam rotated integrally with the camshaft to swing the valve operating cam, and a drive mechanism swings the link mechanism, wherein opening and closing of the engine valve are started in a buffer section of the valve operating cam, and opening/closing timing of the engine valve is controlled by the drive mechanism swinging the valve operating cam via the link mechanism, without the provision of a buffer transition section and a buffer constant-speed section encountered at the time of transiting from a base circle to a cam lobe of the drive cam.02-03-2011
20110023802Concentric Phaser Camshaft and a Method of Manufacture Thereof - A novel concentric phaser camshaft comprises valve actuating lobes that are arranged into lobe structures. The valve actuating lobes to be affixed to an inner camshaft member, are arranged in pinned structures comprising adjacent pairs of lobes which are affixed to the inner camshaft member by pins. The valve actuating lobes to be affixed to the outer camshaft member by an interference fit are arranged into lobe structures comprising a bearing journal and at least one lobe, each lobe structure including an index feature operable to engage a jig to angularly position the lobe structure on the outer camshaft member while the interference fit is established.02-03-2011
20080230025VALVE TIMING CONTROL SYSTEM - A valve enables and disables communication of a bypass passage, which extends from a fluid supply passage and bypasses at least one fluid control valve, to at least one of a retarding passage and an advancing passage connected to a valve timing mechanism. An ECU controls the valve to enable the communication of the bypass passage to the at least one of the retarding passage and the advancing passage when a temperature is equal to or less than a predetermined temperature. The ECU controls the valve to disable the communication of the bypass passage to the at least one of the retarding passage and the advancing passage when the temperature is higher than the predetermined temperature.09-25-2008
20080245328Valve Timing Adjusting Device - A first rotor integrally fixes a housing having the bearing of a camshaft, a case, which internally has a plurality of projecting shoes and which forms hydraulic chambers between these shoes, and a cover, which covers the hydraulic chambers, and the first rotor rotates integrally with a crank shaft. A second rotor has a plurality of vanes each dividing the hydraulic chamber into an advanced-angle hydraulic chamber and a retarded-angle hydraulic chamber, can rotate by a predetermined angle within the first rotor, and is integrally fixed with an intake or exhaust camshaft. A groove accommodating an energizing part, opposed to the shoe of the first rotor and to the vane of the second rotor, is provided on the opposite side to the housing.10-09-2008
20100126451DEVICE AND METHOD FOR CONTROLLING INTERNAL COMBUSTION ENGINE - If it is necessary to rapidly change a phase of an intake camshaft and an intake VVT mechanism relatively slow in responsiveness as it is associated with an “A” bank of a V-type, 8-cylinder engine is in operation for at least a predetermined period of time, an ECU executes a program including the step of controlling intake VVT mechanisms to operate those associated with both the “A” bank and a “B” bank.05-27-2010
20080289594Camshaft Adjuster With a Locking System - A device for adjusting the angle of rotation between two rotating shafts, in particular a drive shaft of a reciprocating-piston internal combustion engine and a camshaft for actuating gas-exchange valves is provided, having a rotation element that is connected in a rotationally fixed manner to the drive shaft, a rotor that is connected in a rotationally fixed manner to the camshaft, and an angle of rotation adjustment system with a locking device which has at least one locking bolt, which is mounted movably in one of the components, and at least one corresponding opening in the other component. The locking bolt can be displaced into and out of the opening by a spring and/or hydraulic force.11-27-2008
20080264364VARIABLE CAMSHAFT TIMING SYSTEM - A variable camshaft timing (VCT) system 10-30-2008
20100126447VALVE DRIVE OF AN INTERNAL COMBUSTION ENGINE - A valve drive of an internal combustion engine, with a camshaft including cams for actuating gas-exchange valves, wherein at least one cam, which includes several cam faces, is guided nonrotatably but with freedom of axial movement on the camshaft; wherein a stroke profile, which cooperates with an actuating pin for the axial displacement of the cam or cam piece, is assigned to the associated axially displaceable cam or an axially displaceable cam piece comprising several cams; and wherein the stroke profile of the axially displaceable cam or cam piece in question includes intersecting stroke curves. A guide element is assigned to the end of the actuating pin which can be introduced into the stroke curve of the stroke profile of the associated axially displaceable cam or cam piece, this guide element being supported in such a way that it can rotate or pivot around the axis of the actuating pin.05-27-2010
20120291735CAMSHAFT ADJUSTER - A camshaft adjuster (11-22-2012
20090188456CAMSHAFT ADJUSTING DEVICE - The camshaft adjusting device has an inner spring retainer which mates with a rotor and an outer spring retainer which is fixed on a spring cover plate.07-30-2009
20110203540VALVE TIMING ADJUSTER - A valve timing adjuster includes a housing and a vane rotor. A hub portion of the vane rotor includes an advance passage and a retard passage. One of a shoe of the housing and the hub portion includes an advance groove and a retard groove. The advance groove provides communication between an advance chamber and the advance passage at a full retard position. The retard groove provides communication between a retard chamber and the retard passage at a full advance position. The advance groove and the retard groove are spaced apart from each other along a longitudinal axis of the housing.08-25-2011
20100139592VARIABLE VALVE TIMING CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE - A variable valve timing control apparatus for an engine includes a variable valve timing unit, a lock pin, a hydraulic control unit, and a lock control unit. The lock control unit causes the lock pin to lock the camshaft phase at an intermediate lock phase when a lock request is issued. When the lock request is issued, the camshaft phase is shifted in a reference direction to go beyond the intermediate lock phase while the lock pin is urged in a lock direction. When the camshaft phase stops around the intermediate lock phase, the lock control unit changes a control amount of the hydraulic control unit by a certain amount to shift the camshaft phase. The lock control unit determines that the camshaft phase has been locked at the intermediate lock phase when the camshaft phase is not shifted even after the lock control unit changes the control amount.06-10-2010
20090025668Variable valve timing control apparatus with supplementary oil pump - A variable valve timing control apparatus includes: a relative rotational phase adjusting mechanism capable of adjusting a relative rotational phase between a drive-side rotational member and a driven-side rotational member between the most advanced angle phase and the most retarded angle phase; and a lock mechanism capable of locking the relative rotational phase at an intermediate phase between the most advanced angle phase and the most retarded angle phase; a first pump operated by a driving force of an engine; and an electrically driven second pump operated as an electrically driven pump. Hydraulic fluid is supplied from at least one of the first pump and the second pump, and the second pump is capable of operating even if the first pump is inoperative when the engine is not running.01-29-2009
20090183704PHASE VARYING APPARATUS FOR ENGINE - [Object] To keep an air-gap between an electromagnetic clutch and a magnet within a predetermined range even if a camshaft vibrates in a radial direction.07-23-2009
20090199801VALVE TIMING ADJUSTING APPARATUS - A valve timing adjusting apparatus includes a driving-side rotor, a driven-side rotor, a sun gear, and a planet gear. The driving-side rotor is rotatable synchronously with the crankshaft. The driven-side rotor is received in the driving-side rotor and rotatable synchronously with a camshaft. The sun gear is rotatable integrally with the driving-side rotor. The planet gear moves epicyclically relative to the sun gear. The driving-side rotor includes a peripheral wall member and a bottom wall member. One of the sun gear and the bottom wall member is fitted with an inner peripheral side of one axial end portion of the peripheral wall member. The other one is fitted with an outer peripheral side of the other axial end portion of the peripheral wall member.08-13-2009
20090199800Valve Lever Assembly Having A Switchable Valve Actuating Mechanism - A valve lever assembly having a switchable valve actuating mechanism comprises a first follower surface for following a first cam, at least one second follower surface for following a second cam and a valve lever, which is supported on an engine-affixed component and on the to-be-actuated valve, wherein the second follower surface is rotatable relative to the first follower surface by a lockable eccentric device borne on the valve lever and the eccentric device comprises an eccentric opening, which penetrates transversely through the valve lever and is fixed relative to the valve lever to as to rotate therewith, and an eccentric shaft rotatably borne in the eccentric opening, the eccentric shaft defining the position of the second follower surface.08-13-2009
20090199799VALVE TIMING ADJUSTING APPARATUS - A valve timing adjusting apparatus includes a housing, a vane rotor, at least one shaft member, and at least one annular seal member. The at least one shaft member is rotatable synchronously with a driven-side shaft and the vane rotor, and is journaled within the housing. The at least one annular seal member is provided between the at least one shaft member and the housing, and the at least one seal member limits leakage of working fluid from a receiving chamber of the housing to an exterior of the housing.08-13-2009
20090199798VALVE TIMING ADJUSTING APPARATUS - A valve timing adjusting apparatus includes a driving-side rotor, a driven-side rotor, and a bias mechanism. The bias mechanism includes a projection portion that is rotatable synchronously with the one of the driving-side and driven-side rotors and that contacts a contact part of the other one of the driving-side and driven-side rotors. The contact part includes a receiver part that is configured to increase the restoring force of the resilient member when the other one of the driving-side and driven-side rotors is rotated relative to the one of the driving-side and driven-side rotors in the advance direction or in the retard direction.08-13-2009
20090320779VARIABLE VALVE MECHANISM - Disclosed is a variable valve mechanism for an internal combustion engine. The variable valve mechanism accurately adjusts the valve operating angle although its structure is simple. The variable valve mechanism includes a control pin 12-31-2009
20090020084VALVE CHARACTERISTIC CONTROLLER AND VALVE CHARACTERISTIC CONTROL SYSTEM - When a valve timing is held, even if a Duty value of an operational signal of a variable valve timing controller is slightly changed, a holding unresponsive range will be arisen. In the unresponsive range, a variation speed of the valve timing is very small. As temperature is decreased, the unresponsive range is extended and an individual difference becomes notable. While the valve timing is held, a computer learns a deviation amount of a response characteristic of the valve timing based on a variation speed of the valve timing when the Duty value is slightly changed from the holding unresponsive range to outside thereof.01-22-2009
20110220047ENGINE WITH DUAL CAM PHASER FOR CONCENTRIC CAMSHAFT - A cam phaser assembly may include a first stator, a first rotor, a second stator and a second rotor. The first stator may be driven by an engine crankshaft. The first rotor may be coupled to a first end of a concentric camshaft and located within the first stator. The first rotor and the first stator may cooperate to define a first set of fluid chambers. The second stator may be fixed for rotation with the first rotor and the first shaft. The second rotor may be coupled to the first end of the concentric camshaft and fixed for rotation with the second shaft and located within the second stator. The second rotor and the second stator may cooperate to define a second set of fluid chambers.09-15-2011
20080264367Variable valve timing control apparatus of internal combustion engine - A variable valve timing control apparatus employs a five-blade vane member fixedly connected to a camshaft end and rotatably disposed in a phase-converter housing formed integral with a sprocket driven by an engine crankshaft. Five phase-retard chambers and five phase-advance chambers are defined by five blades of the vane member and the housing, for creating a phase change of the vane member relative to the housing. A circumferential width of each of a first pair of blades, located on both sides of a first blade having a maximum circumferential width, is dimensioned to be less than a circumferential width of each of a second pair of blades, circumferentially spaced apart from the first blade rather than the first pair. The circumferential width of each of the second pair of blades is dimensioned to be less than the maximum circumferential width of the first blade.10-30-2008
20080264365Camshaft Adjuster - Traditional camshaft adjusters are connected to a lubricant circuit of an internal combustion engine. Lubricant flows which are too large flood the drive of the camshaft adjuster, which leads to needless churning losses in the drive and needless losses of the pump capacity of the lubricant for other structural components of the internal combustion engine. According to the invention, a flow element (10-30-2008
20080264366Oil Passage Structure of Valve Operating System - In a cam journal (10-30-2008
20090050088CAMSHAFT ADJUSTER - A camshaft adjuster for adjusting the relative angular positions of a camshaft and a crankshaft of an internal combustion engine in accordance with a setting shaft is provided. In which the setting shaft is driven by a setting assembly and has a driving connection with an adjusting gear through a coupling. The drive moment is transmitted in the coupling by a radial extension (02-26-2009
20090205599ADAPTIVE INDIVIDUAL DYNAMIC VOLUMETRIC EFFICIENCY OPTIMIZATION FOR ENGINES WITH VARIABLE CAM PHASERS AND VARIABLE LIFT - A control system for an engine having a camshaft that is associated with an intake valve and a cam phaser that interfaces with the camshaft includes an air flow sensor that outputs first and second air flow signals based on mass air flow (MAF) delivered to the engine. An engine control module communicates with the air flow sensor and the cam phaser. The cam phaser adjusts an actuation time when the camshaft opens the intake valve during rotation of the camshaft. The control module further receives a rotational position signal based on the rotational position of the cam phaser and determines a rotational position of the cam phaser that delivers maximum air to the engine based on a first air flow signal measured prior to adjusting the cam phaser and a second air flow signal measured subsequent to adjusting the cam phaser.08-20-2009
20110139103ENGINE INTAKE PORT ARRANGEMENT FOR CAMSHAFT WITH DIFFERENTIAL VALVE LIFT - An engine assembly may include an engine structure, first and second intake valves, and a camshaft assembly. The engine structure may define a combustion chamber, a first intake port in communication with the combustion chamber and directing intake air flow toward a central region of the combustion chamber, and a second intake port in communication with the combustion chamber. The first intake valve may open and close the first intake port and the second intake valve may open and close the second intake port. The camshaft assembly may include a first intake lobe that opens the first intake valve and a second intake lobe that opens the second intake valve. The first intake lobe may be rotationally offset from the second intake lobe in a rotational direction of the camshaft assembly.06-16-2011
20110139104SYSTEM FOR IMPROVING ENGINE PERFORMANCE AND EMISSIONS - A system for improving engine performance and emissions is presented. The system can lower exhaust pressure and improve engine breathing. In one example, exhaust gases are combined to reduce exhaust pressure during exhaust valve overlap.06-16-2011
20090107432CYLINDER VALVE OPERATING SYSTEM FOR RECIPROCATING INTERNAL COMBUSTION ENGINE - A cylinder valve operating system for an internal combustion engine includes a camshaft driving a number of intake and exhaust valve operators which may be selectively disabled through the operation of a valving system including a hydraulic phase shifter integrated with the camshaft and connected between a source of high pressure oil and at least the intake valve operators. The hydraulic phase shifter allows one group of valves, such as the exhaust valves, to be disabled before the other group of valves, typically the intake valves.04-30-2009
20090241878VALVE TIMING ADJUSTING APPARATUS - A valve timing adjusting apparatus includes a driving-side rotor, a driven-side rotor, and a directional control valve. The driven-side rotor is rotated in the advance direction when the advance and retard output ports communicate with the intake port and the retard drain port respectively, and the advance and retard output ports are disconnected from the advance drain port. The driven-side rotor is rotated in the retard direction when the advance and retard output ports communicate with the advance drain port and the intake port respectively, and the advance and retard output ports are disconnected from the retard drain port. A relay passage is provided at an exterior of the directional control valve for communication with the advance and retard drain ports. The drain relay passage closes the advance and retard drain ports relative to the exterior.10-01-2009
20090250028VALVE TIMING ADJUSTING APPARATUS - A valve timing adjusting apparatus includes a housing, a vane rotor, a lock member, a resilient member, and a control unit. The housing includes a limitation groove, limitation stoppers, and a lock hole. When the lock member is received in the groove, the rotational phase is controlled within a predetermined range. When the lock member is fitted with the lock hole, the rotational phase is locked to a lock phase. The resilient member urges the lock member toward the limitation groove and the lock hole in the predetermined direction. The control unit controls a driving force that actuates the lock member in a direction opposite from the predetermined direction. The lock member has small and large diameter portions that are receivable in the lock hole.10-08-2009
20090260591VALVE TIMING ADJUSTING APPARATUS - A valve timing adjusting apparatus includes a housing, a vane rotor, and a fluid path arrangement. The fluid path arrangement is provided inside the housing. The fluid path arrangement opens to air outside the housing. The fluid path arrangement is communicated with a specific fluid chamber that is one of an advance fluid chamber and a retard fluid chamber defined within the housing. A rotational phase of the vane rotor relative to the housing is changed in one of advance and retard directions when hydraulic oil is introduced into the specific fluid chamber. The valve timing adjusting apparatus controls the fluid path arrangement to be opened and closed.10-22-2009
20090241877VARIABLE VALVE GEAR FOR AN INTERNAL COMBUSTION ENGINE - The variable valve gear for an internal combustion engine includes a cam lobe that is rotatably supported by a cam drive shaft, and a variable valve mechanism that includes a drive arm fixed adjacent to one end of the cam lobe in the cam drive shaft, an eccentric shaft member that is swivelably supported at a position opposite to the cam lobe with respect to the drive arm in the cam drive shaft, has an outer circumferential surface eccentric to an axis of the cam drive shaft, and is adjustable in eccentricity, and an intermediate rotary member that is rotatably supported through a bearing member around the eccentric shaft member, and is connected to the drive arm, wherein the drive arm includes an end face that overlaps with an end face of the bearing member, when projecting along the axis of the cam drive shaft, and the end face of the drive arm is protruding further than the end face of the cam lobe toward the bearing member.10-01-2009
20090241875Apparatus and methods for continuous variable valve timing - Apparatus and methods for shifting the phase between a driver gear and a driven gear in communication by a timing belt are provided as well as methods for configuring the apparatus. The apparatus may continuously vary the phase relationship between the driver gear and the driven gear.10-01-2009
20090250027DEVICE FOR MODIFYING THE CONTROL TIMES OF AN INTERNAL COMBUSTION ENGINE10-08-2009
20090255497DUAL-EQUAL CAM PHASING WITH VARIABLE OVERLAP - A cam phaser assembly may include a drive plate assembly, a cavity plate, and a driven plate assembly. The drive plate assembly may include a drive plate and a first vane fixed for rotation with the drive plate. The cavity plate may be rotationally driven by the drive plate and may define first and second chambers. The first vane may extend into the first chamber. The driven plate assembly may be rotationally driven by the drive plate assembly and may include a driven plate and a second vane fixed for rotation with the driven plate that extends into the second chamber.10-15-2009
20090260590PHASE VARYING DEVICE OF ENGINE - [PROBLEMS] To prevent generation of heat by friction in a phase varying device of the engine of an automobile.10-22-2009
20100162979SWITCHABLE VALVE ACTUATING MECHANISM - A valve actuation device may comprise a camshaft including first and second cams, the second cam having a larger lobe than the first cam. A valve lever includes a first follower component or surface adapted to follow the first cam and a second follower component or surface adapted to follow the second cam. The second follower component or surface may be mounted on or defined by an eccentrically-disposed device, which is rotatable relative to the first follower component or surface. When the rotatability of the second follower component or surface is locked by a latching device, the second follower surface translates the contour of the second cam into actuation of an engine valve and, when the second follower component or surface is freely rotatable, the first follower surface translates the contour of the first cam into actuation of the engine valve.07-01-2010
20100162980VARIABLE VALVE TIMING APPARATUS AND CONTROL METHOD THEREFOR - An ECU executes a program including the steps of: detecting engine speed NE (S07-01-2010
20130213330CENTRAL VALVE FOR A CAMSHAFT ADJUSTER - A central valve (08-22-2013
20130213331Rotor for a Camshaft Adjuster, and Camshaft Adjusting System - The invention relates to a rotor (08-22-2013
20130213332VARIABLE VALVE OPERATING APPARATUS - A variable valve operating apparatus includes a drive camshaft that is rotationally driven by the rotational force of the crankshaft, and a driven cam lobe that is rotatably supported by the drive camshaft. The variable valve operating apparatus further includes a guide member that has a raceway surface formed so as to surround the drive camshaft. The variable valve operating apparatus further includes a link mechanism that is connected to each of the drive camshaft and the driven cam lobe and has a control roller which is in contact with the raceway surface. The variable valve operating apparatus further includes a link plate and holding rollers that maintain contact between the raceway surface and the control roller while the drive camshaft makes one rotation. The variable valve operating apparatus further includes an actuator that drives the guide member.08-22-2013
20100258069VALVE TIMING CONTROL APPARATUS - An assist spring is fixed at its one end to a vane rotor and at its other end to a spring hook provided at an outside of a housing 10-14-2010
20100186697VALVE TIMING CONTROL APPARATUS - A valve timing control apparatus includes a driving side rotational member, a driven side rotational member, a fluid pressure chamber, a dividing portion formed at the other one of the driving side rotational member and the driven side rotational member so as to divide the fluid pressure chamber into an advanced angle chamber and a retarded angle chamber, and a fluid control valve portion arranged orthogonally relative to the camshaft at an opposite side of the camshaft so as to dispose the driving side rotational member and the driven side rotational member between the fluid control valve portion and the camshaft, the fluid control valve portion including a first linearly moving member linearly moving in an orthogonal direction relative to the camshaft, thereby controlling supplying and discharging of a fluid relative to the advanced angle chamber and the retarded angle chamber.07-29-2010
20100186700CAMSHAFT PHASE ADJUSTER FOR CONCENTRIC CAMSHAFTS - The camshaft phaser is affixed to one end of a concentric camshaft. The phaser is a vane-type camshaft phaser where the stator and the sprocket are fixed to the outer camshaft and the trigger wheel and rotor are fixed to the inner camshaft. The torsion spring is mounted on an outer wall of the stator, between the stator and the trigger wheel. The phaser is a compact unit with a high degree of reliability.07-29-2010
20100186699VARIABLE CAM TIMING CONTROLS MOUNTED IN THE CAMSHAFT - An internal combustion engine in which the variable cam timing controls for a variable cam timing mechanism include a variable force solenoid mounted within a hollow portion of the camshaft. The variable force solenoid is maintained in place within the hollow camshaft by a tubular shaft fixed to the engine and a bearing between the solenoid and the variable cam timing mechanism.07-29-2010
20090078223VARIABLE VALVE SYSTEM OF INTERNAL COMBUSTION ENGINE - An intake side phase varying mechanism varies an open/close timing of an intake valve, and an exhaust side phase varying mechanism varies an open/close timing of an exhaust valve. Before starting the engine, one of the intake and exhaust side phase varying mechanisms is caused to keep a first position wherein the intake and exhaust valves show the largest valve overlap therebetween and the other of the mechanisms is caused to keep a second position wherein the intake and exhaust valves show the smallest valve overlap therebetween. A controller is configured to carry out, after starting the engine, causing the selected one of the intake and exhaust side phase varying mechanisms to be actually controlled to the first position and causing the other to be actually controlled to the second position.03-26-2009
20090078222VALVE TIMING CONTROL APPARATUS - A check valve is provided in a fluid passage between a phase change valve and a fluid supply source. The check valve enables a flow of the hydraulic fluid from the fluid supply source to a retarding chamber or an advancing chamber defined in a housing in corporation with a vane rotor received therein. The check valve blocks a flow of the hydraulic fluid from the retarding chamber or the advancing chamber to a fluid supply source side. A filter is provided in the fluid passage between the check valve and the fluid supply source to remove debris from the hydraulic fluid before supplying of the hydraulic fluid to the check valve.03-26-2009
20100212618INTERNAL COMBUSTION ENGINE WITH VARIABLE VALVE GEAR - In an engine which comprises a first intake valve and a second intake valve for each cylinder, configured to be driven by a first intake cam and a second intake cam, respectively, and a cam phase change mechanism configured to vary the phase of the second intake cam, the cam phase change mechanism is controlled so that the opening timing of the second intake valve is advanced ahead of that of the first intake valve in a start mode.08-26-2010
20100212616Camshaft Phasing System - An engine cylinder head 08-26-2010
20100212615VALVE TIMING CONTROL APPARATUS - A valve timing control apparatus includes a driving-side rotating member, a driven-side rotating member arranged coaxially with the driving-side rotational member so as to be rotatable relative to the driving-side rotating member, a retarded angle chamber and an advanced angle chamber, each of which is defined by the driving-side rotating member and the driven-side rotating member, a lock mechanism locking a relative rotational phase of the driven-side rotating member at a predetermined phase between a most advanced angle phase and a retarded angle phase, an operation fluid supply-and-discharge mechanism supplying/discharging an operation fluid to/from the retarded angle chamber, the advanced angle chamber and the lock mechanism, and a first air inlet mechanism for connecting one of the retarded angle chamber and the advanced angle chamber to an outside of the valve timing control apparatus in order to allow air to flow thereinto.08-26-2010
20100251980Valve timing controller - A first one-way valve is provided in a first advance passage connecting a hydraulic pump to a control advance chamber. A second one-way valve is provided in a first retard passage connecting the hydraulic pump to a control retard chamber. A first control valve is provided in a second advance passage to bypass the first one-way valve for communication of the first advance passage. A second control valve is provided in a second retard passage to bypass the second one-way valve for communication of the first retard passage. The first control valve operates by the pilot pressure to close the second advance passage at advance controlling and opening it at retard controlling. The second control valve operates by the pilot pressure to close the second retard passage at retard controlling and open it at advance controlling.10-07-2010
20100224154VALVE-TRAIN ASSEMBLY OF AN INTERNAL COMBUSTION ENGINE - A valve-train assembly of an internal combustion engine is provided with a camshaft (09-09-2010
20100242881HYDRAULIC CAMSHAFT ADJUSTER HAVING AN AXIAL SCREW PLUG - A hydraulic camshaft adjuster for an internal combustion engine. The hydraulic camshaft adjuster has a drive part that can be drive-connected to a crankshaft, an output part which has a central, first axial opening for the rotatably fixed connection to a first camshaft and is mounted such that it can be adjusted rotatably with respect to the drive part, a hydraulic actuating mechanism, by which a rotary angle position between the drive part and the output part can be adjusted, and a screw plug which is screwed to the drive part for closing the first axial opening. The screw plug is manufactured from a shaped part which is produced by a forming process without the removal of material.09-30-2010
20100242880VALVE TIMING CONTROLLER FOR INTERNAL COMBUSTION ENGINE - The valve timing controller for the internal combustion engine determines, based on a control parameter during phase angle feedback control, whether or not the valve timing variable mechanism is pressed against a limiting position defined by a stopper, sets a second target phase angle on a reference rotational phase angle value side of the camshaft by a first predetermined value from a detected real phase angle value of the camshaft when the stopper pressing determination means determines that the valve timing variable mechanism is pressed against the limiting position defined by the stopper, and switches a target phase angle during the phase angle feedback control from the first target phase angle to the second target phase angle.09-30-2010
20100242882VALVE MOTION FOR AN INTERNAL COMBUSTION ENGINE - A valve motion for an internal combustion engine which suppresses the height of the internal combustion engine low. In a valve motion for an internal combustion engine, a driving mechanism includes a ball screw disposed over an intake side camshaft and an exhaust side camshaft and having threaded portions provided thereon which are threaded in different directions from each other on the intake side and the exhaust side. Sliders are individually provided on the intake side and exhaust side and movable on the ball screw with connecting link members provided between the sliders and a holder member.09-30-2010
20100251981VENTING MECHANISM TO ENHANCE WARMING OF A VARIBLE CAM TIMING MECHANISM - The present invention increases cold temperature oil flow through the variable cam timing (VCT) phaser to reduce the amount of time it takes to replace this oil with warmer low viscosity oil and thereby improve performance. Furthermore the oil flow through the VCT phaser is reduced once the oil temperature reaches the minimum operating temperature for the VCT phaser to operate and the VCT phaser is commanded to move from the park position. Therefore, the VCT phaser is charged with hot engine oil and is commanded to move from the parked position. The VCT phaser reduces oil flow through the phaser at high oil temperatures and low oil viscosity while adding the benefit of increased oil flow through the phaser at low oil temperatures and high oil viscosity to facilitate getting warmer oil into the VCT phaser sooner for increased VCT performance.10-07-2010
20100139593VARIABLE VALVE TIMING CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE - A variable valve timing control apparatus for an engine includes a variable valve timing unit, a lock pin, a hydraulic control unit, and an oil filling control unit. An operation mode of the hydraulic control unit is changed between a lock mode, in which the lock pin locks the camshaft phase at the intermediate lock phase, and a phase feed-back control mode, in which the camshaft phase is controlled to a target phase. The oil filling control unit supplies oil to an advance chamber and a retard chamber of the variable valve timing unit before the operation mode is changed from the lock mode to the phase feed-back control mode after an engine start. The oil filling control unit causes the lock pin to keep locking the camshaft phase until the oil filling control is completed after the engine start.06-10-2010
20100199937VALVE TIMING ADJUSTING APPARATUS - A valve timing adjusting apparatus includes a housing, a vane rotor, and a spiral spring. The spiral spring has a most radially inward part engaged with a rotational shaft of the vane rotor in a state, where the most radially inward part is wound around the rotational shaft. The rotational phase has an intermediate position defined between a full retard position and a full advance position of the rotational phase. The spiral spring has a radially outward segment that is located radially outward of the most radially inward part. When the rotational phase is in a range on a retard side of the intermediate position or on an advance side of the intermediate position, the radially outward segment is engaged with the stopper such that the spiral spring urges the vane rotor in the advance direction or in the retard direction relative to the housing, respectively.08-12-2010
20100218736VALVE TIMING CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE - A valve timing control apparatus for an internal combustion engine, includes a housing body, a vane rotor, a first plate, and a second plate. The housing body is formed integrally with a shoe at an inside periphery of the housing body, wherein the shoe projects inwardly in a radial direction of the housing body, and wherein the housing body is formed with a sealing recess at an axial end of the housing body. The vane rotor is rotatably mounted in the housing body, wherein the vane rotor includes a vane, wherein the vane and the shoe define advance and retard chambers adapted to supply and drainage of fluid. The first plate is fixedly inserted in the sealing recess of the housing body, the first plate sealing the axial end of the housing body. The second plate seals another axial end of the housing body.09-02-2010
20100192886VARIABLE VALVE TRAIN CONTROL DEVICE - The oil pressure for a hydraulic actuator (08-05-2010
20100192887ENGINE - An oil recovery part (08-05-2010
20090250029CAMSHAFT ADJUSTING DEVICE - The invention relates to a camshaft adjusting device for an internal combustion engine of a motor vehicle. The camshaft adjusting device has a stator which is driven via a crankshaft of the internal combustion engine, a rotor which is connected in a rotationally fixed manner to the camshaft, and it being proposed that the rotary angle position of the rotor can be varied with respect to the stator by way of a piston which can be displaced in the radial direction.10-08-2009
20090145384ADAPTER PHASOR CONTROL HOLD DUTY CYCLE SYSTEM FOR AN ENGINE - A camshaft phasor control system for an engine includes a camshaft position sensor that generates a current camshaft position signal based on position of a camshaft. A first comparator generates a camshaft position signal based on the current camshaft position signal and a crankshaft position. The second comparator generates an error signal based on the relative camshaft position signal and a commanded camshaft position signal. A control module determines a current control hold duty cycle (CHDC) for a camshaft phasor based on an engine state parameter. The control module also generates a correction signal based on the error signal, adjusts the current CHDC based on the correction signal to generate a commanded CHDC signal, and generates another CHDC based on the commanded CHDC signal.06-11-2009
20090145385VALVE TIMING CONTROL APPARATUS - A valve timing control apparatus includes a driving rotation member, a driven rotation member, an advance angle chamber displacing a rotation phase of the driven rotation member relative to the driving rotation member in an advance angle direction, a retard angle chamber displacing the relative rotation phase in a retard angle direction, an advance angle oil passage, a retard angle oil passage, an oil pump, a passage switching valve switching a position between first and second positions, and a drain mechanism provided between the passage switching valve and at least one of the advance angle chamber and the retard angle chamber to accelerate discharge of the hydraulic fluid from one of the advance angle chamber and the retard angle chamber when the hydraulic fluid is supplied to the other of the advance angle chamber and the retard angle chamber.06-11-2009
20090000582Variable valve train system for internal combustion engine - A variable valve train system for an internal combustion engine wherein the engagement section of a transmission mechanism is lubricated by means of an existing part for driving a variable valve actuation mechanism. Gears forming the engagement section of the transmission mechanism are arranged at a position where the engagement section is lubricated with a lubricant scattered from an endless elongate member for driving a camshaft. The transmission mechanism can therefore be lubricated without the need for additional use of a lubricant passage and its associated elements, besides the existing parts for driving the variable valve actuation mechanism.01-01-2009
20090114175VARIABLE VALVE SYSTEM, AND ENGINE DEVICE AND VEHICLE INCLUDING THE SAME - During a low revolution period, centrifugal force applied to a weight is small and therefore the rotating operation of the weight is restricted. This prevents a lock pin from being fitted to the lock pin fitting hole of a floating cam portion, and the floating cam portion idles around a cam fixing shaft. During a high revolution period, centrifugal force applied to the weight increases, and therefore the weight rotates around the rotation shaft. In this way, the tip end of the lock pin is fitted to the lock pin fitting portion of the floating cam portion. Therefore, during the high revolution period, the floating cam portion is fixed with respect to the rotating direction of the variable valve system by the lock pin.05-07-2009
20080271689Control Valve for a Device for Variably Adjusting the Valve Timing for Gas Exchange Valves in an Internal Combustion Engine - A control valve (11-06-2008
20090038570CAMSHAFT ADJUSTER HAVING A VARIABLE RATIO GEAR UNIT - A camshaft adjuster (02-12-2009
20090038568VALVE TIMING CONTROL APPARATUS - To provide a valve timing control apparatus which allows attachment of both a driven device and a valve timing control apparatus to one end of a cam shaft while restricting increase in the total length of an internal combustion engine in the axial direction of the cam shaft and which has high versatility and can restrict weight increase also.02-12-2009
20090038569Device for the variable setting of the control times of gas exchange valves of an internal combustion engine - A device for the variable setting of the control times of gas exchange valves of an internal combustion engine, having an inner rotor (02-12-2009
20100300387SYSTEM AND METHOD FOR DETERMINING A CAMSHAFT POSITION IN A VARIABLE VALVE TIMING ENGINE - A control module and system includes a camshaft position module that determines a camshaft position change of a crankshaft. The control module also includes a cam phaser velocity module determines a cam phaser velocity based on the camshaft position change. A cam phaser velocity module determines a compensation factor based on the cam phaser velocity. A cam position compensation module generates a corrected cam position signal based on the compensation factor.12-02-2010
20090071426Hydraulic circuit, particularly for camshaft adjusters, and corresponding control element - The invention relates to a valve and suitable hydraulic circuit, especially for camshaft adjusters of an internal combustion engine. The hydraulic circuit comprises a number of check valves or two-way valves operating as check valves, in order to provide a rapid camshaft adjuster with a high regulating quality.03-19-2009
20100300388Vane-type camshaft adjuster system - The object of the invention is to provide an economical vane-type camshaft adjuster system that meets the various requirements of various motors. For this purpose, according to the invention a modular system is provided for the valves of a vane-type camshaft adjuster system. Two different embodiments of valves are proposed. With one embodiment, a valve with mid-locking and without mid-locking may be constructed using the same bush. With the other embodiment, a valve with and without special utilization of the camshaft alternating torques may be constructed using the same bush.12-02-2010
20110000449VARIABLE VALVE TIMING DEVICE - A VVT has a movable restriction member and a restriction slot. When the restriction member is in a projected position, the VVT is variable in a restricted range to which the restriction member can be rotatable within the restriction slot. When the restriction member is in a retracted position, the VVT is variable in a range wider than the restricted range. When a condition where the restriction member shall be projected is satisfied, if the variable range of the VVT reaches beyond the restricted range, the device determines that the restriction member is stuck at the retracted position. When a condition where the restriction member shall be retracted is satisfied, if the variable range of the VVT is restricted in the restricted range, the device determines that the restriction member is stuck at the projected position.01-06-2011
20120145104ELECTRIC DRIVE CAMSHAFT PHASER WITH TORQUE RATE LIMIT AT TRAVEL STOPS - A camshaft phaser controllably varies the phase relationship between a crankshaft and a camshaft in an internal combustion engine. The camshaft phaser includes an input member rotatable by the crankshaft. The input member is connected through a gear drive to an output member which is fixed to the camshaft. A rotational actuator acting on the gear drive unit causes relative roation between the input member and the output member. A first stop member is rotatable with the input member in a one-to-one relationship. A second stop member is rotatable with the output member in a one-to-one relationship to limit relative angular travel between the input member and the output member. A torque absorption means is provided for limiting the rate at which torque is applied from the rotational actuator to the gear drive unit when the second stop member makes contact with the first stop member.06-14-2012
20100242879CAMSHAFT PHASER FOR INTERNAL COMBUSTION ENGINE - A camshaft phaser for an internal combustion engine includes a rotor which is rotationally coupled to a camshaft and a hydraulic positioning system for timing the rotor and camshaft with respect to the crankshaft of an engine. A bypass circuit permits hydraulic fluid, such as engine lubricating oil, to flow through at least a portion of the phaser without affecting timing of the camshaft with respect to the crankshaft. In this manner, the phaser may be warmed up rapidly, without adversely affecting engine operation.09-30-2010
20110000450PHASE CHANGING DEVICE FOR AUTOMOBILE ENGINE - Objects The invention provides a phase changing device for automobile engine capable of preventing an unanticipated change in phase angle between the middle rotor and the camshaft of the device caused by a disturbing torque while preventing frictional wear of the inner circumferential walls of groove guides and avoiding generation of axial thrusts of links of the device.01-06-2011
20110114048CAMSHAFT ADJUSTER - A camshaft adjuster for an internal combustion engine of a motor vehicle, including a stator which can be driven by a crankshaft of an internal combustion engine and is located radially on the outside, a rotor which is non-rotatably connected to a camshaft and located radially on the inside, working chambers which are disposed between the rotor and stator and can be subjected to a pressure such that the rotational position of the rotor relative to the stator can be varied, and at least one sealing cover which laterally delimits the working chambers and rests against the stator and/or rotor. The sealing cover, the stator and/or rotor have a convex, concave or conical contact surface, and the sealing cover can be elastically deformed by the attachment via the contact surface such that it rests against the stator and/or rotor with an increased sealing force as a result of elastic deformation.05-19-2011
20120031359CAMSHAFT PHASER INTERMEDIATE LOCKING PIN AND SEAT - A vane-type camshaft phaser for an internal combustion engine includes an intermediate locking pin and seat for locking the camshaft phaser at a position intermediate of its full advanced and retard positions. A feature is provided for radially orienting the locking pin with the seat.02-09-2012
20100180844VALVE TIMING CONTROL DEVICE - A valve timing control device is provided with an electric motor (07-22-2010
20100180845VALVE TIMING CONTROLLER - A valve timing controller is provided with a driving rotor rotating along with a crankshaft, a driven rotor rotating along with a camshaft, a planetary gear performing a planetary motion to adjust a rotational phase between the camshaft and the crankshaft, a motor shaft rotating for controlling the planetary motion, a cylindrical planetary carrier supporting the planetary gear and being connected with the control shaft so that the planetary gear performs the planetary motion, and a lubricating mechanism. The lubricating mechanism includes an introducing port which opens on a side surface of the second rotor axially confronting the planetary carrier. The introducing port extends across a supporting outer surface and a connecting inner surface. The lubricant is introduced into an interior of the first rotor through the introducing port.07-22-2010
20110107991VALVE TIMING ADJUSTER - A valve timing adjuster includes a housing member, a vane rotor, and a seal plate. A first housing segment of the housing member receives the vane rotor therein. A second housing segment of the housing member faces with an opening of the first housing segment. The seal plate includes a base part and a resilient part. The base part is held by the first and second housing segments therebetween. The resilient part is in press-contact with the end surface of the vane rotor within a predetermined angular range. The resilient part, the second housing segment, and a camshaft define therebetween a pressure chamber. The resilient part has a pressurized oil introduction passage that provides communication between the pressure chamber and only one of advance and retard hydraulic chambers.05-12-2011
20110030633VALVE TIMING ADJUSTER - A valve timing adjuster includes a first rotor, a second rotor, a control valve, and a lock mechanism. The lock mechanism includes a retard limitation pin and an advance limitation pin, each of which is provided to the second rotor. The lock mechanism includes a retard limitation groove and an advance limitation groove, each of which is formed to the first rotor. The retard limitation groove and the advance limitation groove are designed to limit the displacement of the retard limitation pin in the retard direction and simultaneously limit the displacement of the advance limitation pin in the advance direction in order to lock the first rotor and the second rotor. The valve timing adjuster alternately increases the oil pressure in the retard chamber and the oil pressure in the advance chamber when the lock of the first and second rotors is released.02-10-2011
20110030632Harmonic Drive Camshaft Phaser with Improved Radial Stability - Improved stiffening and minimized distortion of a housing for an eVCP achieved by forming a plurality of radial housing stiffeners into the housing around the motor mount end and into the eVCP's hub. A back plate is press fit into the rear of the housing, and a straight axial knurl is applied to the surface of the back plate or housing, which knurl permits a larger tolerance-higher press fit class to be used without resulting in significant deformation of the housing. The knurled back plate is harder than the housing, causing the high points of the knurl to plastically deform or plow the housing material during assembly, resulting in less radial deformation of the bore and the journal bearing. An interface between the housing and the hub provides a journal bearing interface to improve axial stability between the hub and housing.02-10-2011
20090084333METHOD AND APPARATUS FOR CONTINUOUSLY VARIABLE DIFFERENTIAL PHASING OF ENGINE VALVE OPERATION - An internal combustion engine includes a crankshaft and first and second cam actuated intake valves. A method for operating the engine includes providing a first intake cam configured to actuate the first cam actuated intake valve, and providing a second intake cam configured to actuate the second cam actuated intake valve. The second intake cam is phase adjustable relative to the crankshaft independently of the phase of the first intake cam relative to the crankshaft. A controller is provided and configured to selectively retard the phase of the second intake cam to effect later closing of the second cam actuated intake valve sufficiently to reduce the effective compression ratio of the engine. Additionally, the first intake cam may be phase adjustable relative to the crankshaft independently of the phase of the second intake cam relative to the crankshaft and the controller may additionally be configured to selectively advance the phase of the first intake cam to effect earlier opening of the first cam actuated intake valve sufficiently to increase internal exhaust gas recirculation.04-02-2009
20100139594Valve drive for activation of gas exchange valves of internal combustion engines - A valve drive for activation of gas exchange valves of internal combustion engines, with which valve stroke switching is accomplished with little effort, a low construction height, and at low switching forces. Incorrect switching and damage to the camshaft during valve stroke switching are avoided, even at high engine speeds of rotation. An adjustment shaft that is rotatable by the camshaft and parallel to the camshaft has two adjustment devices rotatably disposed on it, along with two tappets between the adjustment devices. The tappets are connected with a shift gate for valve switching between two different cam profiles of a cam package that is axially displaceable on the camshaft. The tappets each have a contour that contacts the adjustment devices via a guide pin. A gear wheel engages with a gear segment on the camshaft, via a drive on the adjustment shaft, to rotate the adjustment shaft.06-10-2010
20110120401Adjustable Camshaft Arrangement - A camshaft arrangement for a motor vehicle engine has a hollow outer shaft and an inner shaft supporting inner shaft cams. The inner shaft cams are non-rotatably attached to the inner shaft by at least one connection element that protrudes with clearance through an aperture in the outer shaft and is attached to the respective inner shaft cam which is rotatably mounted on the outer shaft. When inserted into a receiver in the inner shaft, a portion of the connection element protrudes out of the receiver, and the protruding portion is at least partially inserted into an aperture located at the joint diameter of the inner shaft cam. This aperture is open at least towards an end face of the inner shaft cam. The protruding portion has at least two opposite-lying side surfaces lying with an interference fit against corresponding inner surfaces of the aperture of the inner shaft cam.05-26-2011
20100218738NON-SYNCHRONOUS BELT DRIVEN CAMSHAFT PHASE SHIFT DEVICE - A non-synchronous camshaft phasing device 09-02-2010
20100218737CONTROL TIME ADJUSTING DEVICE - A control time adjusting device which adjusts the phase position of a camshaft with respect to an upstream drivetrain that drives the camshaft. The device has a hub element and a bell element which is coupled to the hub element in a variably adjustable manner with regard to the rotary phase position. The adjusting angle range is defined by stop structures. Additionally, adjusting cells, which are separated by radial webs and vane elements, are situated in an intermediate space between the hub element and bell element. The position and the peripheral length of the device, which is definitive for the pivoting travel of the adjusting cells and the arrangement of the vane elements with respect to one another, are adapted such that at least two different-sized adjusting angle ranges can be defined as a function of the assignment of the vane elements to the adjusting cells.09-02-2010
20090031974Electromechanical camshaft phaser having a worm gear drive with a hypoid gear actuator - An electromechanical camshaft phasing system comprising a first pinion gear mounted on the end of an engine camshaft and engaged by a worm gear mounted on a transverse shaft extending from and journalled by bearings in a phaser drive sprocket to cause the camshaft to rotate in response to the engine crankshaft. The first pinion gear is surrounded by a ring gear having a hub keyed to an armature or stator shaft of a motor mounted on the engine coaxially of the camshaft and first pinion gear. A second pinion gear mounted on the worm gear shaft engages the ring gear such that motor rotation of the ring gear about the first pinion gear causes rotation of the second pinion gear, worm gear, first pinion gear, and thus the camshaft with respect to the sprocket, thus varying the phase of the camshaft with respect to the crankshaft.02-05-2009
20090101095VARIABLE VALVE TIMING SYSTEM AND METHOD FOR CONTROLLING THE SAME - In an intake valve phase control after an engine stop command is issued, a stop-time phase is used as a target value. In the intake valve phase control, when the mode changeover condition is not satisfied, and an electric motor that serves as an actuator is not in a locked-state, the highest-speed mode, in which the amount of electric power supplied to the electric motor is fixed to the maximum value, is selected to reliably change the intake valve phase by a required amount. Then, the intake valve phase comes close to the stop-time phase and the mode changeover condition is satisfied, the control mode is changed from the highest-speed mode to the normal mode to set the control phase to the stop-time phase with higher accuracy, and the feedback control over the intake valve phase is executed.04-23-2009
20100037843METHOD FOR DETERMINING A SCANNING RATIO FOR A VALVE FOR A CAMSHAFT ADJUSTER - A method for determining a scanning ratio for a characteristic curve for the operation of an electromechanical valve for a camshaft adjuster in which an ambient temperature and a relative motion of a camshaft are determined at a reference point. In accordance with a specific ambient temperature and other operating conditions such as e.g., engine rpm, a holding scanning ratio is determined. Subsequently, at least one additional scanning ratio of an operating state is determined for a scanning ratio characteristic for the valve.02-18-2010
20100000481PHASE VARYING APPARATUS FOR ENGINE - [Object] Heat generation is not caused by friction in a phase varying apparatus for use with a vehicle engine.01-07-2010
20080257292Control device for electrically driven varible valve timing apparatus - At time of starting an engine, stop/rotation of an electric motor is sensed based on presence/absence of output pulses of an encoder installed in the motor. Controlling of power supply to the motor is prohibited to maintain an off-state of the motor until start of rotation of the motor is sensed. When the start of the motor is sensed, the controlling of the power supply to the motor is started. At time of stopping the engine, stop/rotation of the motor is sensed based on time intervals of pulses outputted from the encoder. The controlling of the power supply to the motor is enabled until sensing of stopping of rotation of the motor. When the stopping of rotation of the motor is sensed, the controlling of the power supply to the motor is prohibited to stop the power supply to the motor.10-23-2008
20100059006Variable Valve Operating Apparatus - The present invention relates to a variable valve operating apparatus having a switching mechanism for switching between a dual valve variable control mode and a single valve variable control mode, and enhances the durability of the switching mechanism.03-11-2010
20110174253DEVICE FOR VARIABLY ADJUSTING CONTROL TIMES OF GAS EXCHANGE VALVES OF AN INTERNAL COMBUSTION ENGINE - A device for variably adjusting control times of gas exchange valves of an internal combustion engine. The device has a drive element, an output element, a rotation angle limiting device and a control valve and counter-working pressure chambers are also provided. Phase adjustment between the output and drive element is initiated by applying pressure to one pressure chamber while discharging the other pressure chamber. The rotation angle limiting device can be locked or unlocked to prevent or allow phasing. The control valve has a valve housing and a control piston. An inflow connection, an outflow connection, a control connection and two working connections are embodied on the valve housing.07-21-2011
20110100312CONTROL SYSTEM FOR VARIABLE VALVE TIMING APPARATUS - When a cam shaft phase is changed during engine operation is stopped, a power supply increase control to an electric motor is carried out, according to which a power-supply duty ratio to the electric motor is increased to a predetermined power increase value which is necessary for moving a VVT apparatus during the stop of the engine operation. Then, the power-supply duty ratio is feedback controlled so that an actual changing speed of the cam shaft phase becomes equal to a target changing speed. As a result, the cam shaft phase can be surely changed and operating sound can be reduced by preventing the changing speed of the cam shaft phase from becoming too fast.05-05-2011
20110073056VALVE OPENING/CLOSING TIMING CONTROL DEVICE - A valve opening/closing timing control device includes: a driving side rotational member; a driven side rotational member; a retarded angle chamber and an advanced angle chamber; a lock mechanism; and a spiral spring providing a biasing force in a predetermined phase direction in a retarded angle region of a relative rotational phase of the driven side rotational member to the driving side rotational member from a most retarded angle phase to a predetermined phase, and not providing the biasing force to a most advanced angle phase from the predetermined phase.03-31-2011
20110073055VALVE OPENING/CLOSING TIMING CONTROL DEVICE - A valve opening/closing timing control device includes: a driving side rotational member synchronously rotatable with a crankshaft of an internal combustion engine; a driven side rotational member arranged coaxially with the driving side rotational member and synchronously rotatable with a camshaft that opens and closes any one of intake and exhaust valves of the internal combustion engine; a phase converting mechanism displacing a relative phase between the driving side rotational member and the driven side rotational member to an advanced angle phase side or a retarded angle phase side by distributing an operating fluid to each of two kinds of pressure chambers, the volume of which is complementarily varied by a movable partition; and a biasing member biasing the relative phase toward a predetermined phase suitable for a start-up of the internal combustion engine except for a most advanced angle phase and a most retarded angle phase.03-31-2011
20110073054ENGINE ASSEMBLY HAVING CAMSHAFT WITH NON-MAGNETIC JOURNAL - An engine assembly may include an engine structure, a camshaft, a timing wheel and a camshaft position sensor. The camshaft may be rotationally supported within the engine structure and may have a non-magnetic journal rotationally fixed thereto. The timing wheel may be rotationally fixed to the camshaft proximate the non-magnetic journal. The camshaft position sensor may be coupled to the engine structure and configured to determine the rotational position of the camshaft based on a magnetic impulse from the timing wheel.03-31-2011
20110067658VALVE TIMING CONTROL APPARATUS - A valve timing control apparatus includes a driving-side rotating member having a housing member and a plate member, a driven-side rotating member arranged in a coaxial manner relative to the driving-side rotational member, a retarded angle chamber and an advanced angle chamber defined by the driving-side rotating member and the driven-side rotating member and used for changing a relative rotational phase of the driven-side rotating member relative to the driving-side rotating member in a retarded angle direction and in an advanced angle direction in response to an operation oil supplied to the retarded angle chamber and the retarded angle chamber, respectively, and a through hole formed at one of the housing member and the plate member, wherein a first slidably contact portion, which serves as a bearing portion between the driving-side rotating member and the driven-side rotating member, has a lower sliding resistance than other slidably contact portions.03-24-2011
20110061620VALVE TIMING CONTROL APPARATUS - A valve timing control apparatus includes: a driving force transmission member; a driving side rotational member, to which a driving force is transmitted; a driven side rotational member coaxially provided to the driving side rotational member, and rotating relative to the driving side rotational member, thereby rotating a camshaft for opening and closing a valve; and a hydraulic pressure chamber formed by the driving side rotational member and the driven side rotational member. The driving side rotational member includes a housing formed into a closed-end cylindrical shape and having a bottom portion formed to close one end of the housing in an axial direction thereof and an opening portion formed to be opened at the other end the housing in the axial direction thereof, and a plate member closing the opening portion. The driving force transmission member, formed into a ring shape, is attached to the bottom portion.03-17-2011
20110048351ADJUSTABLE CAMSHAFT SPROCKET ASSEMBLY AND TOOL FOR SAME - An adjustable camshaft sprocket assembly includes a hub and a sprocket body secured to the hub. A stud-receiving opening is defined in one of the hub flange and the sprocket body, and a tool-receiving opening is defined in the other of the hub flange and the sprocket body. The tool-receiving opening is aligned with the stud-receiving opening and is adapted to receive a body portion of an adjustment tool, and the stud-receiving opening is adapted to receive an eccentric stud of the adjustment tool. Either the stud-receiving opening or the tool-receiving opening is elongated. Rotation of the adjustment tool when its body is located in the tool-receiving opening and its eccentric stud is located in the stud-receiving opening causes relative angular movement between the hub and the sprocket body. One or more fasteners are used to immovably secure the sprocket body to the hub after adjustment. A tool includes cylindrical base, a driving head, and an eccentric stud. The stud comprises a spring pin press-fit into a bore.03-03-2011
20080245329Device for Adjusting the Position of the Angle of Rotation of the Camshaft of a Reciprocating Piston Internal Combustion Engine in Relation to the Crankshaft - A device for adjusting the position of the angle of rotation of the camshaft of a reciprocating piston internal combustion engine relative to the crankshaft in a motor vehicle is provided, which includes an adjusting gear mechanism in the form of a triple shaft gear mechanism having a drive shaft fixed to the crankshaft, an output shaft fixed to the camshaft and an adjustment shaft which is drivingly connected to an electric motor which can be positioned using an electric control device. The ignition of the internal combustion engine is connected to the motor vehicle battery via an ignition switch. The motor vehicle also includes at least one device which can be adjusted by a user of the vehicle. A monitoring circuit provided with at least one sensor for detecting a change of state of the at least one device. The monitoring circuit is connected to the control device when the latter is switched off, such that the control device is switched on when a change in state is detected.10-09-2008
20110247576OSCILLATING-MOTOR CAMSHAFT ADJUSTER HAVING A HYDRAULIC VALVE - The invention relates to an oscillating-motor camshaft adjuster having a hydraulic valve, which has two working ports. These two working ports each have a standard opening axially adjacent to one another and an opening for the utilization of pressure peaks as a consequence of camshaft alternating torques. A hydraulic pressure can be guided from a supply port to the working port to be loaded, while the working port to be relieved of pressure is guided to a tank port. In order to also keep the control performance high in the case of internal combustion engines with very greatly fluctuating camshaft alternating torques, it is proposed according to the invention that a position of hydraulic valve can be controlled proportionally, in which the pressure peaks of the working port to be relieved of pressure are blocked relative to the supply port and the working port that is to be loaded.10-13-2011
20100242883VALVE TIMING CONTROL APPARATUS - A valve timing control apparatus includes an inner rotor, a vane, an outer rotor, a first fluid passage to an advanced angle chamber, a second fluid passage to a retarded angle chamber, a lock mechanism restricting the relative rotation between the inner and outer rotors, a third fluid passage establishing an unlocked state by supplying the fluid to the lock mechanism and a locked state by discharging the fluid from the lock mechanism, a first switching valve supplying the fluid to each of the first and second fluid passages and discharging from each of the first and second fluid passages and a second switching valve controlling a fluid flow to be supplied to or discharged from the third fluid passage, wherein the first switching valve is operated independently from the second switching valve, and the fluid is supplied to the first switching valve via the second switching valve.09-30-2010
20080230026Phase Adjusting Device - The invention relates to a transmission assembly (09-25-2008
20090241876VARIABLE VALVE LIFT APPARATUS - A variable valve lift apparatus includes an input cam disposed to a input shaft, a valve opening unit, a control shaft parallel to the input shaft, an input link rotatably coupled to the control shaft and contacting the input cam, a control link connected with the input link and eccentrically connected to the control shaft, a connecting link connected with the control link, and a lift arm that is rotatably coupled to the control shaft, is connected with the connecting link, and drives the valve opening unit.10-01-2009
20090126664VALVE TIMING ADJUSTING DEVICE - A valve timing adjusting device includes a housing, a first vane rotor, a second vane rotor, a biasing device, and a limiting device. The second vane rotor is coaxial with the first vane rotor. The biasing device has a first end engaged with the first vane rotor and a second end engaged with the second vane rotor. The biasing device biases one of the first and second vane rotors in the advance direction, and biases the other one in the retard direction. The limiting device allows the first vane rotor to rotate relative to the second vane rotor when pressure of working fluid is lower than a preset level, and limits the first vane rotor from rotating relatively when the pressure is not lower than the preset level.05-21-2009
20090126663VARIABLE VALVE TIMING APPARATUS AND CONTROL METHOD FOR THE SAME - A variable valve timing device delivers rotation of a crankshaft to a first camshaft, and to a second camshaft through the first camshaft. First and second variable valve timing units change phases of the first and second camshafts, respectively. A crankshaft sensor senses angle changes of the crankshaft. A camshaft sensor senses angle changes of the second camshaft. A control portion controls the phase of the second camshaft by controlling the second variable valve timing unit, or controls the phases of both camshafts by controlling the first variable valve timing unit, according to signals from the crankshaft sensor and the camshaft sensor. Also, a control method for such a device. One of several possible modes is selected. Target phases of the camshafts corresponding to an operation of an engine are determined. Phases of the first camshaft and/or the second camshaft are controlled according to the selected mode.05-21-2009
20090126662ENGINES WITH VARIABLE VALVE ACTUATION AND VEHICLES INCLUDING THE SAME - An engine includes a camshaft with outer and inner elongate members. The outer elongate member can include a lobe that actuates a valve. The inner elongate member can be axially disposed within a passageway defined by the outer elongate member. The inner elongate member can be movable relative to the outer elongate member. A tab can be attached to the inner elongate member and can extend into an aperture defined by the outer elongate member. Crankshaft and camshaft pulleys can be respectively attached to the crankshaft and camshaft. A flexible transmitter can be routed over the camshaft pulley, a first deflection member, the crankshaft pulley, and a second deflection member. A first deflection actuator can be engaged with the first deflection member and can facilitate variation in a phase relationship between the camshaft and crankshaft pulleys. A vehicle may also be provided.05-21-2009
20080314345ADJUSTMENT DEVICE FOR ADJUSTING THE RELATIVE ROTATIONAL ANGLE POSITION OF A CAMSHAFT IN RELATION TO A CRANKSHAFT OF AN INTERNAL COMBUSTION ENGINE - An adjustment device (12-25-2008
20110041788CAMSHAFT ADJUSTING SYSTEM - A camshaft adjusting system of an internal combustion engine, which has a rotor, a stator, and first and second concentrically arranged camshafts one of which is driven by the stator and the other one of which is driven by the rotor. The camshafts can be rotated relative to one another to change phase angles of at least one cam on the first of the camshafts relative to at least one cam on the second of the camshafts. Hydraulic vane cells between the stator and the rotor control the rotation of the rotor relative to the stator. The total difference in the shapes and positions of the camshafts is smaller than bearing gaps of at least one bearing point between the rotor and the stator, and sealing elements which can be adjusted to the bearing gaps are provided in the bearing gaps between the rotor and the stator.02-24-2011
20110253086ADJUSTING SYSTEM FOR CAMSHAFTS OF AN INTERNAL COMBUSTION ENGINE - An adjusting system for camshafts of an internal combustion engine having an emergency running function, comprising a phase shifter gearing with an input drive element driven by a crankshaft of an internal combustion engine, an output drive element which drives a camshaft of the internal combustion engine, and an actuating element, by means of which a relative rotation between the drive input element and the drive output element can be realized by means of a device for imparting a braking torque, which is variable for normal operation, to the actuating element. In the event of failure of the device and/or control thereof, an emergency running setting of the camshaft can be attained and maintained as a result of braking or respectively, arresting the actuating element.10-20-2011
20110253085VALVE-TIMING CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE - A valve-timing control apparatus includes a drive rotator configured to receive a rotation from a crankshaft; a driven rotator fixed to a cam shaft; and an electric motor. The electric motor includes a stator fixed to the driven rotator, a rotor that rotates relative to the stator, a coil provided to at least one of the stator and the rotor, and a motor output shaft fixed to the rotor. The valve-timing control apparatus further includes a speed-reduction mechanism; a slip ring provided to one of the drive rotator and a fixed member, and configured to feed power to the coil; a power-feeding brush provided to another of the drive rotator and the fixed member, and abutting on the slip ring; a detection-target section provided to one of the fixed member and the motor output shaft, and located on an inner circumferential side beyond a contact portion between the slip ring and the power-feeding brush; and a detecting section provided to another of the fixed member and the motor output shaft, and configured to detect a rotational position of the motor output shaft by detecting a position of the detection-target section.10-20-2011
20120199086VALVE TIMING CONTROL APPARATUS - A valve timing control apparatus includes a linear solenoid having a coil, a casing, a needle, a pair of cylindrical stators and a cylindrical spacer. The pair of cylindrical stators oppose with each other through an air gap in an axis direction. The pair of stators and the needle form a magnetic circuit so as to drive the needle to reciprocate. The cylindrical spacer fits with an outer circumference side of the pair of stators so as to restrict a short circuit from being generated in the magnetic circuit between the pair of stators. The spacer defines a discharge passage that connects the air gap to a discharge port of the casing.08-09-2012
20110162603DEVICE FOR VARIABLY ADJUSTING THE CONTROL TIMES OF GAS EXCHANGE VALVES OF AN INTERNAL COMBUSTION ENGINE - A device for variably adjusting the control times of gas exchange valves of an internal combustion engine. The device has a driving element, an output element, at least one pressure chamber, at least one mechanism limiting the angle of rotation, and a pressure accumulator. A phase angle between the output and driving element is changed by delivering or discharging pressure medium to or from the pressure chambers. The mechanism limiting the angle of rotation has a receiving member and an engaging element to which a force is applied towards the receiving member (07-07-2011
20110162605CAM TORQUE ACTUATED PHASER USING BAND CHECK VALVES BUILT INTO A CAMSHAFT OR CONCENTRIC CAMSHAFTS - A camshaft assembly in which a bearing (07-07-2011
20110162606VALVE TIMING CONTROL APPARATUS - Disclosed is a valve timing control apparatus capable of avoiding inadvertent realization of a locked state by effectively preventing pulsating pressure of fluid generated in association with torque variation of a cam shaft from having any effect on a fluid passageway used for lock releasing. The apparatus includes a first fluid passageway for feeding/discharging fluid to/from an advanced angle chamber, a second fluid passageway for feeding/discharging fluid to/from a retarded angle chamber, a third fluid passageway for feeding/discharging fluid to/from a locking mechanism capable of locking relative rotation between an inner rotor and an outer rotor, a first switching valve for controlling the feeding/discharging of the fluid to/from the first fluid passageway and the second fluid passageway, a second switching valve for controlling the feeding/discharging of the fluid to/from the third fluid passageway, a pump for feeding fluid to the first switching valve and the second switching valve, and a check valve for inhibiting communication of the fluid from the first switching valve to the second switching valve and allowing communication of the fluid from the second switching valve to the first switching valve.07-07-2011
20100319641VARIABLE VALVE TIMING CONTROL APPARATUS - A variable valve timing control apparatus includes a driving rotor, a driven rotor coaxially arranged with the driving rotor, a fluid pressure chamber defined between the driving rotor and the driven rotor, a partition portion arranged at one of the driving rotor and the driven rotor and dividing the fluid pressure chamber into advanced and retarded angle chambers, a first fluid control mechanism controlling supply and discharge of a hydraulic fluid to and from the fluid pressure chamber, a first phase restriction portion restricting and releasing a relative rotational phase between the driving rotor and the driven rotor within and from a first restriction range, a second phase restriction portion restricting and releasing the relative rotational phase within and from a second restriction range, and a second fluid control mechanism controlling the supply and discharge of the hydraulic fluid to and from the first and second phase restriction portions individually.12-23-2010
20120145105CONTROL VALVE - A control valve which has a substantially cylindrical valve box and a substantially cylindrical control piston. The control valve can be arranged in a cylindrical receptacle and the control piston is arranged so as to be axially displaceable inside the valve box.06-14-2012
20110041789DEVICE FOR ADJUSTING THE ROTATIONAL POSITION OF A CAMSHAFT RELATIVE TO A CRANKSHAFT OF AN INTERNAL COMBUSTION ENGINE - A device for adjusting the rotational position of a camshaft relative to a crankshaft of an internal combustion engine having a rotor (02-24-2011
20100282193Single Cam Phaser Camshaft - A camshaft assembly is disclosed which comprises an inner shaft (11-11-2010
20120266834DEVICE FOR VARIABLY ADJUSTING THE CONTROL TIMES OF GAS EXCHANGE VALVES OF AN INTERNAL COMBUSTION ENGINE - A camshaft adjuster (10-25-2012
20120031360ELECTROMAGNETIC CAMSHAFT-ADJUSTER DEVICE - An electromagnetic camshaft-adjuster device having an armature unit (02-09-2012
20110132303DEVICE FOR VARIABLE ADJUSTMENT OF THE TIMING OF GAS EXCHANGE VALVES OF AN INTERNAL COMBUSTION ENGINE - A device for the variable adjustment of the timing of gas exchange valves of an internal combustion engine, which has a hydraulic phase shifting device, a camshaft and a pressurizing distributor. The phase shift device can come into drive linkage with a crankshaft and is rigidly connected to the camshaft. A phase position of the camshaft relative to the crankshaft can be variably adjusted by the phase shift device. The interior of the camshaft has a cavity that communicates with one or more camshaft bearings which are separate from a rotating pressurizing means conveyor. The pressurizing distributor is disposed in a receiving area of the camshaft. The camshaft has an opening in the area of the pressurizing means distributor which with the interior of the camshaft and the rotating pressurizing conveyor. A pressurizing path is designed inside the camshaft which communicates with the opening and the hydraulic phase shift device.06-09-2011
20110079189ZENTRALVENTIL EINES NOCKENWELLENVERSTELLERS EINER BRENNKRAFTMASCHINE - A central valve of a camshaft adjuster of an internal combustion engine, which has a valve housing, a control piston and a fastening flange. The valve housing is at least partially arranged within a receptacle within the camshaft adjuster and has hydraulic connections. The control piston bears at least in regions against an inner circumferential surface of the valve housing and is mounted displaceably on the inner circumferential surface. The fastening flange is fixedly connected to a wall of the receptacle and defines the axial position of the valve housing relative to the camshaft adjuster.04-07-2011
20100175651VALVE TIMING CONTROLLER - When a spool is positioned in a lock range including a stroke end in a first direction, an advance port and a lock port are respectively connected to a supply port and a discharge port. When the spool is positioned in an advance range deviating from the lock range in a second direction, the advance port and the lock port are fluidly connected to the supply port. While a driving source generates a driving force to move the spool in the second direction, a biasing member biases the spool in the first direction. When the spool is positioned at a limit position of the advance range, a biasing force biasing the spool in the first direction is stepwise varied by a specified variation width.07-15-2010
20100175649VALVE OPENING/CLOSING TIMING CONTROL APPARATUS - A valve opening/closing timing control apparatus includes a phase displacing mechanism for displacing relative phase between a drive-side rotational member and a driven-side rotational member rotatable in unison with a cam shaft, a locking mechanism capable of locking the relative phase to an intermediate locking phase suitable for starting and releasing this lock by a work fluid when needed and an urging mechanism configured to provide an urging function for urging the phase displacing mechanism toward an advancing side in a restricted range between an intermediate restricting phase located more on the retarding side than the intermediate locking phase and a most retarding phase.07-15-2010
20100116232VARIABLE VALVE GEAR FOR INTERNAL COMBUSTION ENGINE - In a variable valve gear for an internal combustion engine provided with a camshaft phase change mechanism for variably controlling opening and closing timings of an intake valve, the camshaft phase change mechanism and a variable valve lift mechanism are controlled so that the closing timing of the intake valve is advanced beyond a predetermined range T05-13-2010
20100199938VARIABLE VALVE TIMING APPARATUS - A variable valve timing apparatus includes a stopper piston which has an equalizing passage in an axial direction. Even if the engaging hole is filled with the oil, the equalizing passage enables the oil flows from an engaging hole to a holding hole when the stopper piston enters into the engaging hole. It is possible to form a vane as narrow as possible, and to enlarge a variable angular range. In addition, the stopper piston has both end faces which are substantially identical in surface area. Even if pulsation arises in oil pressure, pressures acting on both end faces of the stopper piston can be substantially cancelled and position of the stopper piston can be stabilized.08-12-2010
20090293825VARIABLE VALVE LIFT APPARATUS - A variable valve lift apparatus may include a camshaft having an input cam, a rocker arm shaft disposed in parallel with the camshaft with a distance therebetween, a shaft carrier with a camshaft and a rocker arm shaft, a rocker arm that is mounted on the rocker arm shaft with a first roller contacting the input cam, a first link connected to the rocker arm, an amplification lever with a middle portion thereof connected to the first link and the shaft carrier, a second link connected to the amplification lever, an output cam mounted on the camshaft, one side of the output cam connected to the second link, and a profile portion formed at an exterior circumference thereof, a variable driveshaft rotating the shaft carrier by a predetermined angle, and a valve moved by the profile portion with rotation of the output cam.12-03-2009
20110185994VALVE TIMING ADJUSTER - A valve timing adjuster adjusts timing of opening and closing an intake valve or an exhaust valve by changing a phase between a drive shaft and a driven shaft. The valve timing adjuster includes a housing, a vane rotor, an urging member, a regulating member, and a control unit. The control unit controls rotation of an electric motor that rotates the drive shaft. When an internal combustion engine stops in a state, where the regulating member is positioned out of a bore, the control unit restarts the engine by controlling the electric motor in the following manner. Firstly, the motor is controlled to rotate at a first rotational speed, which is a relatively high speed and subsequently, the motor is quickly changed to rotate at a second rotational speed, which is a relatively low speed.08-04-2011
20100024754VALVE CONTROL APPARATUS FOR ENGINE - [OBJECT] After having determined a phase angle, the phase angle is maintained as the determined one without consuming electric power. [ACHIEVING MEANS] An intermediate member 02-04-2010
20100175650VALVE OPENING/CLOSING TIMING CONTROL APPARATUS - A valve opening/closing timing control apparatus includes a phase displacing mechanism for displacing relative phase between a drive-side rotational member and a driven-side rotational member rotatable in unison with a cam shaft, a first pump driven by an internal combustion engine, a second pump driven by a drive source different from the internal combustion engine, a locking mechanism capable of locking the relative phase to an initial phase suitable for starting the internal combustion engine, and an urging mechanism 07-15-2010
20090188455MECHANICALLY VARIABLE CAM TIMING DEVICE - The mechanical variable cam timing device has a camshaft connector, a sprocket, a sprocket ring and a connector ring, all of which have teeth with slanted side walls that mate to form a circumferential ring. The sprocket ring and the connector ring move axially so as to shift the spacing between the teeth and provide for a phase shift.07-30-2009
20110107992VARIABLE VALVE DEVICE FOR INTERNAL COMBUSTION ENGINE - A variable valve device for an internal combustion engine includes a first cam phase variable mechanism capable of varying the phases of both first and second intake cams by using operating oil pressure, and a second cam phase variable mechanism having a split change function and capable of varying the phase of the second intake cam relative to that of the first intake cam by using the operating oil pressure. When the engine is operating in a low-speed, low-load region (A) in which the engine rotating speed is lower than a predetermined rotating speed (N05-12-2011
20090173298VALVE TIMING ADJUSTING APPARATUS - A valve timing adjusting apparatus includes a first rotor, a second rotor, and a bias mechanism. The bias mechanism is provided to one of the first and second rotors. The bias mechanism includes a resilient member and a projection portion that is rotatable together with the one of the first and second rotors. The projection portion is rotatable relative to the other one of the rotors and contacts a contact part of the other one. Restoring force of the resilient member is applied to the other one of the first and second rotors through the projection portion. The contact part includes an inclination portion that is configured to increase and decrease restoring force of the resilient member.07-09-2009
20090151680OIL GALLERY FOR VARIABLE VALVE TIMING APPARATUS OF A CYLINDER HEAD - An oil gallery for a variable valve timing apparatus of a cylinder head includes an advance oil supply passage that fluidly connects an oil control valve hole and a variable valve timing journal, a retard oil supply passage that fluidly connects the oil control valve hole and the variable valve timing journal, and an oil chamber in at least one of the oil supply passages. The oil chamber may have a slanted ceiling that may slant upward toward an outlet opening of the oil chamber. The uppermost point of the ceiling may be positioned at the oil outlet. The lowermost point of the outlet opening may be above the bottom surface of the oil chamber.06-18-2009
20100186698CONCENTRIC CAM WITH PHASER - An assembly for an engine comprising at least one phaser and a camshaft assembly. The camshaft assembly has an outer camshaft piece and an inner camshaft piece. The outer camshaft piece includes an outside cam integrally attached to the housing of the phaser through a middle portion. The outer camshaft piece also defines a hollow extending a length. The inner camshaft piece includes an inner cam adjacent to the outer cam. A tube portion extends from a first side of the inner cam and is received by the hollow of the outer camshaft piece, connecting the inner cam to the rotor of the phaser. A shaft portion extends to an end portion from the other side of the outer cam. A passage, connected to an inlet line is present within the inner camshaft piece, directing fluid to the control valve of the phaser.07-29-2010
20110030631Harmonic Drive Camshaft Phaser with Bias Spring - An eVCP camshaft phaser comprising a harmonic gear drive unit having a circular spline and a dynamic spline linked by a common flexspline, and a single wave generator disposed within the flexspline. The circular spline is connectable to either of a crankshaft-connectable sprocket or an engine camshaft, the dynamic spline being connectable to the other thereof. The wave generator is driven selectively by an eMotor to cause the dynamic spline to rotate past the circular spline, thereby changing the phase relationship between the crankshaft and the camshaft. A coaxial coil spring is connected to the sprocket and to the phaser hub and is positioned and tensioned to bias the phaser and camshaft to a stop position wherein the engine can run or be restarted after the eMotor is de-energized. Preferably, the spring comprises a spring cassette for easy assembly into the eVCP.02-10-2011
20120145103ENGINE ASSEMBLY INCLUDING CAMSHAFT WITH INDEPENDENT CAM PHASING - An engine assembly may define first and second combustion chamber and may include a camshaft having a first lobe region engaged with the first valve arrangement and a second lobe region engaged with the second valve arrangement and rotatable relative to the first lobe region. The cam phaser may be coupled to the camshaft and may include a first member and a second member rotatable relative to the first member. The first lobe region may be fixed for rotation with the first member and the second lobe region may be fixed for rotation with the second member to vary valve timing for the second combustion chamber independently from the valve timing of the first combustion chamber.06-14-2012
20090314235Hydraulic Control System for Engine Cam Phasing - A hydraulic control system to provide an oil or pressurized fluid supply to a variable cam phasing system in an engine is provided. The hydraulic control system includes a valve housing attachable to a front cover assembly of the engine; a first valve installed in the housing; and an inlet passage defined by the front cover assembly hydraulically communicating with the first valve in the housing to carry pressurized fluid from a fluid source to the first valve. A first and a second outlet passage defined by the housing hydraulically communicates with the first valve to allow the pressurized fluid to flow to the cam phasing system, thereby variably moving a camshaft assembly operatively connected to the cam phasing system.12-24-2009
20080257291Variable valve mechanism - A variable valve mechanism includes a low-speed cam, a high-speed cam, a low-speed rocker arm driven by the low-speed cam, a high-speed rocker arm driven by the high-speed cam, and a switching mechanism. A cam profile of the high-speed cam is set such that it does not exceed a cam profile of the low-speed cam. During low-speed operation, the switching mechanism links the low-speed and the high-speed rocker arms such that the low-speed cam causes the high-speed rocker arm to rock together with the low-speed rocker arm and to open and close a valve. During high-speed operation, the switching mechanism de-links the low-speed rocker arm and the high-speed rocker arm such that the low-speed cam causes the low-speed rocker arm to rock idly and the high-speed cam causes the high-speed rocker arm to rock independently and to open and close the valve. The cam profile of the low-speed cam is set such that the valve closes later than it does with the cam profile of the high-speed cam.10-23-2008
20120304946CLAMPING DISK AND CAM ADJUSTING UNIT - A clamping disk (12-06-2012
20120304945VARIABLY OPERATED VALVE APPARATUS OF INTERNAL COMBUSTION ENGINE AND START CONTROL APPARATUS OF INTERNAL COMBUSTION ENGINE - In a variably operated valve apparatus of an internal combustion engine and a start control apparatus of the same engine, the internal combustion engine being equipped with a crank position control mechanism by means of which a stop position of a piston is controllable at a time of an engine stop and the variably operated valve apparatus being capable of variably controlling at least a closure timing of an intake valve, the closure timing of the intake valve is placed at a first position which is more advance angle side than the stop position of the piston of one of engine cylinders in a compression stroke and which is stop controlled by means of the crank position control mechanism and one of the remaining cylinders which is in a suction stroke has its the intake valve open, at the time of the engine stop.12-06-2012
20120304947DEVICE FOR VARIABLE ADJUSTMENT OF THE CONTROL TIMES OF GAS EXCHANGE VALVES OF AN INTERNAL COMBUSTION ENGINE12-06-2012
20110315104VARIABLE VALVE TIMING DEVICE FOR INTERNAL COMBUSTION ENGINE AND MANUFACTURING METHOD THEREFOR - A variable valve timing device for an internal combustion engine includes: a variable valve timing mechanism that changes a valve timing; and a phase limiting mechanism that locks a rotational phase between a housing rotor and a vane rotor at an intermediate phase. The phase limiting mechanism engages a first limiting pin with a first engaging groove and engages a second limiting pin with a second engaging groove to lock the housing rotor to the vane rotor. A retard-side side surface of an engaging hole is configured so as to be able to adjust a clearance between the second limiting pin and the retard-side side surface when the first limiting pin is engaged with a first advance end portion.12-29-2011
20120042841VALVE TIMING CONTROL APPARATUS - A valve timing control apparatus includes a housing that is rotatable with a crankshaft; a vane rotor that is rotatable with a camshaft; and a phase controller to compulsorily change a rotation phase of the vane rotor alternately between an advance side and a retard side with respect to the housing if an engine shifts to a high rotation state after the engine continuously has a low rotation state for a predetermined period or more. The engine in the low rotation state has a rotation speed lower than a predetermined rotation speed. The engine in the high rotation state has a rotation speed equal to or higher than the predetermined rotation speed.02-23-2012
20120055429VARIABLE VALVE TIMING CONTROL APPARATUS - A variable valve timing control apparatus includes an abnormality determining portion and a valve controller. The abnormality determining portion determines whether there is an abnormality in a system of a VCT phase control in which an oil pressure control valve is controlled in a manner that an actual VCT phase coincides with a target phase. The valve controller controls the oil pressure control valve to drive a lock pin in a locking direction so as to lock the VCT phase when the abnormality determining portion determines that there is an abnormality in the system of the VCT phase control.03-08-2012
20100083924DEVICE FOR CAMSHAFT ADJUSTMENT IN AN INTERNAL COMBUSTION ENGINE - A device for camshaft adjustment in an internal combustion engine which has an inner rotor rotationally fixed to a camshaft. The inner rotor is rotationally adjustable relative to an outer rotor that is driveably connected to a crankshaft. At least one hydraulic chamber limited by side walls is introduced into the outer rotor and is divided into two partial chambers by an element extending radially outward from the inner rotor. To lock the relative movement between the inner and outer rotor, two locking pins penetrating the inner rotor axially engage in two recesses of one of the side walls designed as a locking cover. To adjust the play of the locking pins in the recesses, at least one of the recesses has a stop surface for the locking pin, the position of which changes as viewed circumferentially with the radial distance from the axis of the inner rotor.04-08-2010
20110094466ENGINE ASSEMBLY INCLUDING CAM PHASER WITH DUAL LOCK POSITION - A cam phaser assembly may include a stator assembly, a rotor assembly, and a lock assembly. The stator assembly may be rotationally driven by an engine crankshaft. The rotor assembly may be engaged with the stator assembly and fixed for rotation with an engine camshaft. The rotor assembly may include a radially extending vane located within a recess of the stator assembly to define advance and retard chambers receiving pressurized fluid to rotationally displace the rotor assembly. The lock assembly may be engaged with the stator assembly and the rotor assembly during first and second operating conditions. The lock assembly may include a lock pin mechanically securing the rotor assembly in a rotationally advanced position relative to the stator assembly during the first operating condition and mechanically securing the rotor assembly in a rotationally retarded position relative to the stator assembly during the second operating condition.04-28-2011
20120152195HYDRAULIC VALVE FOR AN OSCILLATING MOTOR ADJUSTER - The invention relates to a hydraulic valve for an oscillating motor adjuster that utilizes camshaft alternating torques by means of non-return valves for more rapid adjustment. The non-return valve that is not used for the respective rotation is additionally closed by means of the piston of the hydraulic valve.06-21-2012
20090199797ELECTROMOTIVE CAMSHAFT ADJUSTER - An electromotive camshaft adjuster for adjusting the angle of rotation of the camshaft (08-13-2009
20100095920VARIABLE VALVE TIMING APPARATUS - A variable valve timing apparatus has a case, a rotor, and a magneto-rheological fluid. The magneto-rheological fluid gives variable braking force to the rotor. The rotor is connected with a phase adjusting mechanism. The phase adjusting mechanism adjusts a phase of an internal combustion engine according to braking force. A sealing device is disposed between the case and the rotor. In one embodiment, the sealing device has a magnet and a plurality of flux guide members. In other embodiment, a diaphragm which acts as a damper mechanism for absorbing an internal pressure change is disposed on a fluid chamber in which the magneto-rheological fluid is kept.04-22-2010
20110088645VALVE TIMING ADJUSTER - A valve timing adjuster for an internal combustion engine adjusts valve timing. The valve timing adjuster includes a housing, a vane rotor, a regulation device, a fluid route, and an opening/closing control device. The regulation device regulates a rotational phase of the vane rotor relative to the housing to a regulation position located between a full advance position and a full retard position. The fluid route is communicated with a specific chamber that is at least one of an advance chamber and a retard chamber. The fluid route extends via a radially inner part to be communicated with atmosphere. The radially inner part is located radially between the specific chamber and a rotation center. The opening/closing control device opens and closes the fluid route.04-21-2011
20090133652VALVE TIMING CONTROL APPARATUS - A valve timing control apparatus for controlling valve timing includes a first rotor, a second rotor, and a controller. The second rotor and the first rotor defines therebetween an advance chamber and a retard chamber. The controller includes a supply passage, at least one drain passage, a spool valve, at least one connection passage, and at least one check valve. The at least one connection passage connects the supply passage to the at least one drain passage when a spool of the spool valve is moved to one of the advance and retard positions. The at least one check valve is respectively provided in the at least one connection passage. The check valve allows working fluid to flow in a direction from the at least one drain passage toward the supply passage and limits working fluid from flowing in an opposite direction.05-28-2009
20090133651VALVE TIMING CONTROL APPARATUS - An advancing check valve is placed in an advancing connection passage of a spool to enable a flow of hydraulic fluid in a first direction from a retarding port side toward an advancing port side upon placement of the spool in an advancing position and to limit a flow of hydraulic fluid in a second direction from the advancing port side toward the retarding port side upon placement of the spool in the advancing position. A retarding check valve is placed in a retarding connection passage of the spool to enable a flow of hydraulic fluid in the second direction upon placement of the spool in a retarding position and to limit a flow of hydraulic fluid in the first direction upon placement of the spool in the retarding position.05-28-2009
20090133649ENGINE - An engine can include a first catalyst disposed in a first exhaust passage, a second catalyst disposed in a second exhaust passage to be located upstream of the first catalyst, a variable valve operating mechanism configured to make lifting amounts of a first and second exhaust valves variable between approximate zero and maximum, and a lifting amount control unit for controlling the lifting amounts of the first and second exhaust valves with the variable valve operating mechanism such that an exhaust gas amount passing through the second exhaust passage is larger than that passing through the first exhaust passage.05-28-2009
20120125276FOUR STROKE INTERNAL COMBUSTION ENGINE HAVING VARIABLE VALVE TIMING AND METHOD - A four stroke internal combustion includes at least one cylinder and at least one intake valve associated with the cylinder. The intake valve is configured to open and close over a predetermined range of crankshaft rotation in accordance with a Miller thermodynamic cycle. An electronic controller receives at least one input signal indicative of an amount of air and/or an amount of air/fuel mixture in cylinder. The electronic controller is configured to provide a timing phase signal that operates to adjust a timing of operation of the intake valve based on the input signal(s) such that a torque output of the engine is maintained substantially constant over a predetermined range of engine speed by shifting the predetermined range of crankshaft rotation.05-24-2012
20100288217Valve drive train arrangement - In a valve drive train arrangement for an internal combustion engine having a camshaft with a cam element axially displaceable supported on the camshaft and having a stop for limiting the axial movement of the cam element, the stop has at least one stop element extending radially from the camshaft for engagement with the cam element.11-18-2010
20100288216VALVE TIMING CONTROL APPARATUS - A driven-side rotator is rotatable synchronously with a camshaft and is supported between a gear member and a sprocket member of the driving-side rotator in an axial direction. A stopper portion of the driven-side rotator is adapted to contact the driving-side rotator in a rotational direction to limit a change in a relative phase between the crankshaft and the camshaft. The stopper portion radially outwardly projects from a small diameter portion provided at one end part of the driven-side rotator. A large diameter portion is provided at the other end part of the driven-side rotator and has a radial size that is measured from a rotational axis to a radially outer peripheral surface of the large diameter portion and is equal to or larger than that of the stopper portion.11-18-2010
20120132165METHOD FOR OPERATING A CAMSHAFT PHASER - A method for operating a camshaft phaser in an internal combustion engine is provided. The camshaft phaser is used to control the phase relationship between a crankshaft and a camshaft of the internal combustion engine. The method includes determining that the internal combustion engine will be placed in an automatic stop mode. The camshaft phaser is then controlled to establish a predetermined phase relationship between the crankshaft and the camshaft. The internal combustion engine is then placed in automatic stop mode and the predetermined phase relationship is maintained by substantially blocking oil flow between the camshaft phaser and the internal combustion engine.05-31-2012
20120132164METHOD FOR OPERATING AN OIL CONTROL VALVE - A method for operating an oil control valve in an internal combustion engine is provided. The oil control valve controls a camshaft phaser disposed at an output side of the control valve and includes a spool disposed in a spool housing. The camshaft phaser controls the phase relationship between a crankshaft of the internal combustion engine and a camshaft of the internal combustion engine. The method includes positioning the spool within the spool housing to substantially block oil flow between the camshaft phaser and the internal combustion engine when the engine is temporarily not running.05-31-2012
20110180029Valve drive for activation of gas exchange valves of internal combustion engines - A variable valve drive for internal combustion engines is used for activation of gas exchange valves, in which the gas exchange valves engage different cam profiles of a camshaft driven by the crankshaft of the internal combustion engine. The camshaft has at least one displaceable cam segment that carries multiple different cam profiles having the same base circle section. Each one of the cam profiles is switched to be active for the related gas exchange valve, in accordance with the axial position of the cam segment relative to at least one related gas exchange valve. The axial positioning of the cam segment takes place by a setting shaft that can be rotated and is disposed parallel and next to the camshaft. The setting shaft has a guide track in which a tappet is guided, which acts on a transfer element that determines the axial position of the cam segment.07-28-2011
20120210963CAMSHAFT ADJUSTING ASSEMBLY - A camshaft adjustment assembly (08-23-2012
20120210962FASTENING ASSEMBLY OF A CAMSHAFT ADJUSTER - A fastening assembly for fastening a camshaft adjuster to a camshaft, having an input part that can be brought into driving engagement with a crankshaft, an output part that is non-rotationally connected to the camshaft, the output part being mounted rotationally adjustably with respect to the input part, and a control mechanism, by which a rotational angle position between the input and output parts can be adjusted. The output part is provided with a central axial opening penetrated by an end section of the camshaft. The end section has a thread-bearing thread section, which is screwed together with a tension nut acting on the output part such that the output part and the camshaft are axially loaded for the non-rotational connection thereof. To this end, the tension nut is elastically loaded in the axial direction or relieved in the axial direction.08-23-2012
20100050967CAMSHAFT AND PHASER ASSEMBLY - An assembly is provided comprising an SCP camshaft (03-04-2010
20100050966VALVE TIMING CONTROL DEVICE - A valve timing control device includes a driving side rotational member, a driven side rotational member, a fluid pressure chamber, a parting portion dividing the fluid pressure chamber into an advanced angle chamber and a retarded angle chamber, a restriction member, a restriction recessed portion for restricting a displacement of a relative rotational phase within a range between a most advanced angle phase or a most retarded angle phase and a predetermined phase when the restriction member is inserted into the restriction recessed portion, and a restriction cancellation passage, wherein a communication between the accommodation portion and one of the advanced angle chamber and the retarded angle chamber via the cancellation passage is interrupted at least when the restriction member contacts one of end portions of the restriction recessed portion, and the restriction member is restricted so as not to move over the other one of the end portions.03-04-2010
20100269772VARIABLE VALVE TIMING CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE - A variable valve timing control apparatus adjusts the rotation phase (VCT phase) of an engine camshaft by selectively supplying oil to an advancement chamber and a retardation chamber, and includes a lock pin which is controlled for being moveable to a first position, in which the rotation phase is adjustable, and a second position, in which the camshaft is locked at a specific rotation phase. When the lock pin is displaced from the first position, oil becomes enabled to pass between the advancement chamber and retardation chamber, to thereby enabling the rotation phase to be changed to the specific rotation phase by supplying oil to an appropriate one of the advancement chamber and a retardation chamber, for initiating locking.10-28-2010
20120247411SYSTEM AND METHOD FOR CAM PHASER CONTROL IN AN ENGINE - A control system for an engine includes a position determination module and a position control module. The position determination module determines a first cam phaser position for starting the engine prior to engine shut down, and determines a second cam phaser position for starting the engine while the engine is shut down. The position control module adjusts a cam phaser to the first cam phaser position at engine shut down. The position control module adjusts the cam phaser from the first cam phaser position to the second cam phaser at engine start up when a difference between the first cam phaser position and the second cam phaser position is greater than a predetermined difference. A method for controlling an engine is also provided.10-04-2012
20120312262CAMSHAFT ADJUSTING DEVICE - A camshaft adjusting device (12-13-2012
20120186548VALVE TRAIN WITH VARIABLE CAM PHASER - A valve train for an internal combustion engine includes a camshaft and a variable cam phaser connected to the camshaft for driving the camshaft. The variable cam phaser includes an input shaft rotationally coupled to a crankshaft drive member; and an output shaft rotationally coupled to the camshaft and coaxial with the input shaft. Electrically operated adjusting means drivingly connect the input and output shafts enabling the input and output shafts to be selectively, angularly adjusted while maintaining driving engagement therebetween. The input and output shafts are coupled to the drive member and camshaft via respective, rotationally stiff, flexible couplings.07-26-2012
20100192885ELECTROMAGNETIC ACTUATING DEVICE - An electromagnetic actuating device comprising a plurality of electromagnetic actuation units (08-05-2010
20090020086VALVE TIMING ADJUSTER - A supply control apparatus controls advancing supply, which is supply of working fluid to advancing chambers, and retarding supply, which is supply of the working fluid to retarding chambers. The supply control apparatus alternately and repeatedly executes the advancing supply and the retarding supply in such a manner that a rotational torque, which drives a camshaft, changes at a phase of cycle that is opposite from a phase of cycle of a variable torque, which changes with time and is applied to the camshaft, at time of limiting a phase of the camshaft relative to a crankshaft within a target phase range.01-22-2009
20090020085VALVE TIMING ADJUSTER - A control apparatus controls supply of working fluid to advancing chambers and retarding chambers. The control apparatus alternately and repeatedly implements an advancing supply period, during which the working fluid is supplied to the advancing chambers, and a retarding supply period, during which the working fluid is supplied to the retarding chambers, at time of limiting a phase of a camshaft relative to a crankshaft within a target phase range.01-22-2009
20120227696Apparatus for sensing cam phaser position - A first target wheel has an opening and rotates about an axis of rotation to move the opening along a generally circular path. A second target wheel adjacent the first target wheel has a second projection projecting into the opening of the first target wheel with the second projection being movable along the generally circular path. A single sensor is positioned adjacent the generally circular path and senses movement of the opening and the second projection past the sensor. An electronic controller may be used to process signals from the sensor to determine the relative angular difference between the first target wheel and the second target wheel.09-13-2012
20120298061SINTERED STATOR-COVER UNIT AND CAMSHAFT ADJUSTER - A stator-cover unit (11-29-2012
20100326386ENGINE VALVE CONTROLLER - [Problems] To keep a determined phase angle without consuming power once the phase angle is determined.12-30-2010
20120137999VARIABLE VALVE DRIVING APPARATUS - A variable valve driving apparatus includes a driving shaft including a first camshaft and a second camshaft coaxially disposed to the first camshaft, a driving cam including an opening cam disposed to the first camshaft and a closing cam disposed to the second camshaft, a phase control portion controlling relative phases between the first camshaft and the second camshaft and a valve opening portion opened by the opening cam and the closing cam.06-07-2012
20120325168SWITCHABLE LEVER FOR A VALVE DRIVE OF AN INTERNAL COMBUSTION ENGINE - The invention concerns a switchable lever (12-27-2012
20120325169CONTROL VALVE OF A DEVICE FOR CHANGING THE RELATIVE ANGULAR POSITION OF A CAMSHAFT WITH RESPECT TO A CRANKSHAFT OF AN INTERNAL COMBUSTION ENGINE - A control valve (12-27-2012
20120318224INTERNAL COMBUSTION ENGINE - An internal combustion engine may include at least one camshaft mounted via at least one bearing with at least one phase adjuster. The at least one bearing may be a rolling bearing. An oil feed ring may surround the camshaft adjacent to the rolling bearing, wherein the oil feed ring may have at least one external annular channel and at least one first radial bore aligned with a second radial bore in the camshaft. An outer diameter of the oil feed ring may be smaller than an outer diameter of the rolling bearing. An oil supply of the at least one phase adjuster may be introduced via an oil gallery defined in a cylinder head through the annular channel through the second radial bore into the camshaft.12-20-2012
20120318223ELECTRIC CAM PHASER CONTROL SYSTEMS AND METHODS - A system for an engine includes a motor driver module, a target phase angle module, and a correlation control module. The motor driver module controls an electric motor of a camshaft phaser based on a target angle defined by a crankshaft position and a camshaft position. The target phase angle module selectively sets the target angle to a first phase angle before a deceleration fuel cutoff (DFCO) event and selectively transitions the target angle to a predetermined phase angle during the DFCO event. The correlation control module selectively compares a value of the crankshaft position with a predetermined crankshaft position range during the DFCO event.12-20-2012
20110048350VARIABLE FORCE SOLENOID WITH INTEGRATED POSITION SENSOR - A phaser for an engine having at least one camshaft comprising a housing, a rotor, a control valve, an actuator, and a pulse wheel. The rotor connects to a camshaft coaxially located within the housing. The housing and the rotor define at least one vane separating a chamber in the housing. The vane is capable of rotation to shift the relative angular position of the housing and the rotor. The control valve is received by the rotor and directs fluid to the chambers of the phaser. The actuator positions the control valve and has at least one integrated position sensor, such that electrical connections for the actuator and the integrated position sensor are made through one connection, decreasing leakage of fluid from the phaser. A pulse wheel is mounted on the phaser for rotation therewith and in alignment with the integrated position sensor of the actuator.03-03-2011
20110226204FILTER ELEMENT AND CONTROL VALVE FOR A CAMSHAFT ADJUSTMENT SYSTEM - A filter element for a control valve of a camshaft adjuster. The filter element has an annular filter fabric for extracting particles, and a gripping frame for fastening the annular filter fabric. The gripping frame is designed here for the planar bracing of the annular filter fabric on the control valve. Furthermore, a control valve is disclosed for a camshaft adjuster with a corresponding filter element.09-22-2011
20110226203ENGINE INCLUDING SYSTEM AND METHOD FOR REDUCING OIL PULL-OVER IN COMBUSTION CHAMBER - An engine assembly may include an engine structure, a piston, a first valve and a first valve actuation assembly. The engine structure may define a combustion chamber and a first port in communication with the combustion chamber. The piston may be located within the combustion chamber and be reciprocally displaceable between a top dead center position and bottom dead center position. The first valve may selectively open and close the first port. The first valve actuation assembly may be engaged with the first valve and be operable in first and second modes. The first valve actuation assembly may be operated in the first mode when fuel is provided to the combustion chamber and operated in the second mode when fuel is cutoff from the combustion chamber. The first mode and second modes may provide different opening durations of the first valve in order to reduce vacuum in the combustion chamber.09-22-2011
20100192888High strength aluminum alloy casting and method of production of same - A high strength aluminum alloy casting obtained by casting an aluminum alloy comprised of 7.5 to 11.5 wt % of Si, 3.8 to 4.8 wt % of Cu, 0.45 to 0.65 wt % of Mg, 0.4 to 0.7 wt % of Fe, 0.35 to 0.45 wt % of Mn, and the balance of Al and not more than 0.2 wt % of unavoidable impurities, wherein this aluminum alloy has 0.1 to 0.3 wt % of Ag added to it or contains 0.1 to 1.0 wt % of at least one element selected from the group of second additive elements comprised of Rb, K, Ba, Sr, Zr, Nb, Ta, V, and Pd and rare earth elements, and a method of production of a high strength aluminum alloy casting comprising the steps of filling a melt of an aluminum alloy in a mold to obtain a casting, taking out the aluminum alloy casting from the mold, solubilizing the high strength aluminum alloy casting by heating in a temperature range of 495 to 505° C. for 2 to 6 hours, quenching the high strength aluminum alloy casting after the solubilization, and age hardening the high strength aluminum alloy casting by heating in a temperature range of 160 to 220° C. for 2 to 6 hours after quenching.08-05-2010
20100224153VARIABLE VALVE TIMING SYSTEM AND METHOD FOR CONTROLLING THE SAME - A variable valve timing system changes a valve phase by reducing an operation amount of an actuator at a speed reduction ratio that varies depending on a phase region. When the valve phase is outside a region in which the ratio of the amount of change in the phase with respect to the operation amount of the actuator is low, namely a high speed reduction ratio, the actuator may be operated due to, for example, a reaction force applied to a camshaft, and an undesirable valve phase change may result. Accordingly, when an engine stop command is possibly issued, the target phase value is restricted to a region more delayed than a phase restriction value set in consideration of the amount by which the valve timing can be changed from when an engine stop command is issued until when the engine is stopped.09-09-2010
20120279467Assembled Camshaft, Main Camshaft Body and Method for Producing an Assembled Camshaft - A camshaft that is assembled or is to be assembled carries at least one cam element that is to be disposed on a main camshaft body to be rotationally fixed and axially movable, and at least one cam element to be disposed on the main camshaft body so as to be rotationally fixed and axially immovable. The main camshaft body has first axial sub-sections having a multi-tooth profile, so that due to a positive connection between shaft and hub the cam element to be disposed in the sub-section so as to be axially movable is seated so as to be rotationally fixed. The main camshaft body also has second axial sub-sections having an extended diameter so that by a non-positive connection between shaft and hub it is ensured that the cam element to be disposed in the sub-section is seated so as to be rotationally fixed and secured against movement.11-08-2012
20120279466CAMSHAFT ADJUSTER WITH DEVICE FOR EMERGENCY OPERATION - An adjustment device for adjusting the relative angular position of a camshaft with respect to a crankshaft within a specified angle range, the adjustment device having a device for emergency operation of the adjustment device. The device for emergency operation includes a freewheel device which can be activated in an emergency mode of the adjustment device and, in an activated state, is able to allow an adjustment movement of the camshaft with respect to the crankshaft from the current position in a first direction towards an emergency running position and to block an adjustment movement in a second direction opposite thereto.11-08-2012
20120285408VALVE TRAIN FOR INTERNAL COMBUSTION ENGINES FOR ACTUATING GAS EXCHANGE VALVES - A valve train device for switching lift of gas exchange valves of an internal combustion engine includes a camshaft including a carrier shaft and a cam assembly disposed non-rotatably and axially displaceably on the carrier shaft via a guide. The cam assembly includes a bearing region, at least one cam group having at least two cams and a first and a second axial contour. A bearing bush is mounted non-rotatably and axially displaceably in a camshaft bearing and radially supports the camshaft in the camshaft bearing. The cam assembly is mounted rotatably and axially displaceably in the bearing bush in the bearing region. The bearing bush includes a first axial reverse opposing contour that corresponds to, and is switchable into operative contact with, the first axial contour and a second axial reverse opposing contour that corresponds to, and is switchable into operative contact with, the second axial contour.11-15-2012
20120285407VARIABLE VALVE TIMING CONTROL APPARATUS OF INTERNAL COMBUSTION ENGINE - A variable valve timing control apparatus of an internal combustion engine, has a housing having a plurality of shoes and a vane member having a plurality of vanes dividing each working fluid chamber formed between adjacent two shoes into advance and retard oil chambers. The vane member rotates to an advanced angle side and to a retarded angle side relative to the housing by selectively supplying or exhausting hydraulic pressure in or from the advance oil chamber and the retard oil chamber. A most-advanced angle position and a most-retarded angle position are limited by the fact that one vane touches one shoe from a circumferential direction. Radius of curvature of one of both corners of a base part of the one shoe, which is a corner located at a side where the one vane does not touch, is set to be greater than those of corners of the other shoes.11-15-2012
20130008399PRESSURE ACCUMULATOR ARRANGEMENT FOR A CAMSHAFT ADJUSTING SYSTEM - A pressure accumulator arrangement in a camshaft for a camshaft adjusting system of an internal combustion engine, having at least one pressure accumulator and at least one control valve, characterized in that the pressure accumulator and control valve are connected to form a structural unit.01-10-2013
20130019829CAMSHAFT ADJUSTER - A camshaft adjuster (01-24-2013
20130019830CONTROL VALVE HAVING A CURVED SPRING BAND SERVING AS A NON-RETURN VALVE - A control valve, in particular a proportional valve for controlling a device for adjusting the rotation angle position of a camshaft with respect to a crankshaft of an internal combustion engine, including a hollow-cylindrical valve housing (01-24-2013
20080236530ADJUSTMENT DEVICE FOR ADJUSTING THE RELATIVE ROTATIONAL ANGLE POSITION OF A CAMSHAFT IN RELATION TO A CRANKSHAFT OF AN INTERNAL COMBUSTION ENGINE - An adjustment device (10-02-2008
20080236529Control Valve for a Device for Changing the Control Times of an Internal Combustion Engine - A control valve (10-02-2008
20080236528CAMSHAFT ADJUSTER AND METHOD FOR SETTING A LIMITING POSITION FOR A CAMSHAFT ADJUSTER - A camshaft adjuster (10-02-2008
20080230027Vct Control Module with Intelligence - A variable cam timing control module for an internal combustion engine having at least one cam position sensor, at least one solenoid to actuate a cam phasing device, a driven outer cam sprocket position sensor and a microcontroller. The microcontroller may receive a set point angle signal from the engine's Electronic Control Unit, which it compares with input signals from the driven outer cam sprocket position sensor and the at least one cam position sensor to determine the proper cam phase angle. The microcontroller then sends a signal to the at least one solenoid to adjust the corresponding cam phasing device so that the cam phase angle matches the commanded set point.09-25-2008
20080230024Controlling two cam phasers with one cam position sensor - A camshaft (cam) phaser control system for an engine includes a first camshaft having a first target wheel. A second camshaft has a second target wheel. A cam position sensor detects said first and second target wheels and generates camshaft position data based on said first and second target wheels.09-25-2008
20110253087VALVE TIMING CONTROL APPARATUS - A valve timing control apparatus includes a locking mechanism having a locking member disposed in an accommodating portion formed in one of a drive-side rotor and a driven-side rotor and projectable into and retractable from the other rotor than the one rotor having the accommodating portion and a locking groove defined in the other rotor for receiving and retaining the locking member projecting therein, the locking mechanism for restraining a relative rotational phase when the locking member is retained within the locking groove. The apparatus further includes a restricting mechanism having a restricting member disposed within the accommodating portion and projectable into and retractable from the other rotor to be movable relative to and together with the locking member in a projecting/retracting direction of the locking member and a restricting groove defined in the form of an elongate slot in the other rotor for receiving the restricting member projecting therein, the restricting mechanism restricting the relative rotational phase within a predetermined range when the restricting member projects into the restricting groove.10-20-2011
20080223323Valve timing control device for internal combustion engine - A valve timing control device includes a drive pulley driven by a crankshaft of an engine, and a driven camshaft. The camshaft has a cam that serves to open and close an intake port. An engine valve is spring-loaded by a valve spring, whereas the cam opens or closes the engine valve against the bias of the spring. Torque is transmittable between the drive pulley and the camshaft, and a rotation angle adjusting mechanism is provided therebetween. The rotation angle adjusting mechanism has a movable operating member being movable in a substantially radial direction.09-18-2008
20080223322Camshaft adjuster - In a camshaft adjusting device comprising a locking unit provided for locking an adjustment function component in at least one position relative to a camshaft drive component wherein at least two locking structures are provided which each have at least one locking surface for mutual engagement, each locking structure surface is formed by an at least substantially planar area which is inclined with respect to the direction of movement, the locking unit providing for a play-free engagement between the camshaft drive component and the adjustment function component.09-18-2008
20130167787VALVE TIMING CONTROL APPARATUS - Even when sliding occurs between a radially extending face of a spring member and at least one of a driving-side rotary member and a driven-side rotary member, wear of the at least one of the driving-side rotary member and the driven-side rotary member is prevented. Along the axial direction of the camshaft, a torsion spring is provided between the driven-side rotary member and a housing side face portion for urging the relative rotational phase to the angle advancing direction or the angle retarding direction, and a spring washer is disposed between the driven-side rotary member and the torsion spring.07-04-2013
20130139772FLUID BRAKE DEVICE AND VALVE TIMING CONTROLLER - A fluid brake device includes a case defining a fluid chamber filled with magnetorheological fluid, a brake rotor having a magnetic part received in the fluid chamber, a coil that generates magnetic flux by being supplied with electricity, and a controller that controls electricity supplied to the coil. Magnetic particles are suspended in the magnetorheological fluid, and the magnetic flux passes through the magnetic part. The controller continues supplying the electricity to the coil while the brake rotor has a half rotation from a stop state where the brake rotor is stopped at a startup time at which the brake rotor starts rotating.06-06-2013
20080216783VARIABLE VALVE TIMING MECHANISM-EQUIPPED ENGINE - A variable valve timing mechanism-equipped engine is provided which allows a mount installing section and a hydraulic control valve of a variable valve timing mechanism to be positioned in a chain case without limitation of positioning of accessories such as a water pump, air conditioning compressor, power steering oil pump and alternator, and which simplifies an operating oil passage for the hydraulic control valve. In the variable valve timing mechanism-equipped engine, a mount installing section is positioned below an actuator cover section and is offset toward one side with respect to a cylinder axis, and intake- and exhaust-side hydraulic control valves are disposed sideward of the mount installing section with axes inclined toward a direction perpendicular to the crankshaft axis, the intake- and the exhaust-side hydraulic control valves overlapping one another.09-11-2008
20130092114METHOD AND DEVICE FOR OPERATING AN INTERNAL COMBUSTION ENGINE IN THE EVENT OF A FAULT IN A CRANKSHAFT SENSOR - A method for operating an internal combustion engine in the event of a fault in a crankshaft sensor is provided, the internal combustion engine having at least two camshafts and a speed and/or a position of the internal combustion engine being derived from a signal taken from the camshaft. In order to improve the exhaust gas performance of the internal combustion engine even in a crankshaft emergency operating mode, only a first camshaft is used to determine the speed and/or the position of the internal combustion engine, while the second camshaft. is adjusted in its angle of rotation in order to set a variable valve operating mechanism on the intake and exhaust valves of the internal combustion engine that are driven by the second camshaft.04-18-2013
20130112162CAMSHAFT ADJUSTER - A camshaft adjuster (05-09-2013
20130112163VALVE INSERT, AND VALVE HAVING A VALVE INSERT OF THIS TYPE - A valve insert (05-09-2013
20130125847VARIABLE CAM CONTROL IN AN ENGINE - A method for controlling variable camshaft timing is provided. In one example, an engine method comprises adjusting a variable cam actuator responsive to cam position feedback from even and uneven readings of a cam sensor. In this way, increased cam position feedback may be provided to improve cam positioning control.05-23-2013
20130133598AUXILIARY DEVICE MOUNTING STRUCTURE FOR AN INTERNAL COMBUSTION ENGINE - In an auxiliary device mounting structure for mounting an auxiliary device (05-30-2013
20130133599VALVE TIMING CONTROLLER - A first housing has a first concave portion that opposes to a vane rotor, and the first concave portion has an inside diameter larger than an inside diameter of a first through hole of the first housing. A boss part of the vane rotor has a first convex portion projected into the first concave portion. A reed valve is arranged between an end surface of the first convex portion and a bottom surface of the first concave portion, and has an outside diameter larger than the inside diameter of the first through hole.05-30-2013
20080210182Electric Camshaft Adjuster - The invention relates to an electric camshaft adjuster for adjusting and securing the phase angle of a camshaft of an internal combustion engine with respect to its crankshaft, having a three shaft gearing which is embodied as a harmonic drive (09-04-2008
20080202460VARIABLE VALVE TIMING MECHANISM - In a variable valve timing mechanism, a valve-lifting cam member is fitted, slidably in tile circumferential direction, onto a camshaft that is driven to rotate in synchronization with a crankshaft of a four-stroke cycle internal combustion engine. An eccentric collar is set between a driving collar fixed on the camshaft and the valve-lifting cam member. A driving projection is formed in the driving collar and engages with one of sandwiching portions of the eccentric collar. A driven protrusion is formed in the valve-lifting cam member and engages with another one of the sandwiching portions of the eccentric collar. A linkage mechanism includes the eccentric collar, the drive, and the driven protrusions. The variable valve timing mechanism adjusts the timing of opening and closing of the valve while the rotational phase of the valve-lifting cam member is cyclically varied relative to the camshaft by the eccentricity of the eccentric collar.08-28-2008
20130146006Continuous Variable Valve Duration Apparatus - A continuous variable valve duration apparatus may vary an opening duration of a valve. The continuous variable valve duration apparatus may include a camshaft in which a camshaft slot is formed, a cam portion of which a cam and a cam slot are formed thereto and of which a rotation center is identical to a rotation center of the camshaft and the cam portion of which a phase angle to the cam shaft is variable, and a duration control portion which varies the phase angle between the camshaft slot and the cam slot.06-13-2013
20130146007VALVE TRAIN OF A COMBUSTION PISTON ENGINE - A valve train of a combustion piston engine having an actuating device which comprises a phase shift gearbox with two inputs and an output for phase adjustment of a camshaft. The first input is connected with a crankshaft, the second input is connected with a controllable braking device and the output is rotationally fixed with the camshaft. The brake is an electromagnetically controlled friction brake which comprises an electromagnet and magnetic coil. A brake rotor is connected with the second input and can be biased, by the magnetic field of the electromagnet, against a friction surface. A permanent magnet is positioned axially adjacent the brake rotor such that, by its magnetic field, the brake rotor can be pressed against a fixed friction surface for the adjustment of a basic brake torque with the respective basic pressing force.06-13-2013
20080196681MOUNTING OF AN SCP CAMSHAFT ON AN ENGINE - A method disclosed for mounting a camshaft and a phaser on an engine, the camshaft being an SCP camshaft formed of concentric inner and outer rotary members each fast in rotation with a respective one of two groups of cams and the phaser enabling the phase of at least one of the rotary members of the camshaft to be varied dynamically relative to the phase of the engine crankshaft and the other rotary member. The method comprises first securing the phaser 08-21-2008
20100294223VALVE TIMING CONTROL DEVICE - A valve timing control device includes: a driving side rotational member; a driven side rotational member; a fluid pressure chamber; a partition portion; a lock member; a lock groove; and a lock release, wherein the lock release passage is in communication with the lock groove, and the rotational member formed with the accommodation portion is provided with an atmosphere open passage which is in communication with the lock groove when the relative rotational phase is at a specific phase.11-25-2010
20120272931COMBUSTION ENGINE WITH VARIABLE VALVE ACTUATION - A valve actuating cam has a periphery that can be varied in shape to control the opening and closing of one or more valves associated with a cylinder of an internal combustion engine. One portion of a valve assembly can be moved outwardly to change the valve lift. A band can surround the movable cam portion and cam body portion, and can form at least a major portion of the exterior surface of the cam that engages a cam follower such as a valve operating rocker arm. The timing of the opening and closing of one or more valves can be adjusted by adjusting the peripheral shape of the cam. The shape can be adjusted to start a ramp portion of the cam peripheral surface earlier to cause a valve to open earlier and to end a ramp portion later to cause the valve to close later with a first load on the engine and to open and close earlier when the engine is under a second load that is less than the first load. Wedges and wedging surfaces under the band and movable with the movable portion of the cam can be used to adjust the timing.11-01-2012
20100313837VALVE CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE - A valve control apparatus is provided for an internal combustion engine. The apparatus includes a variable phase angle mechanism configured to continuously change a valve opening phase angle of a valve, a variable valve mechanism configured to continuously change at least one of a valve opening duration and a valve lift of the valve, and a controller configured to control the variable phase angle mechanism and the variable valve mechanism. The variable phase angle mechanism is configured to set the valve opening phase angle at a retarded phase angle in a startup operation as compared with a normal phase angle in a normal operation. After an engine stop command is generated, the controller controls the variable valve mechanism such that an integrated valve opening value is increased to be larger than an idle state integrated valve opening value in an idle state.12-16-2010
20100313836PHASE VARIABLE DEVICE IN CAR ENGINE - The invention provides a phase variable device for use with a car engine, capable of preventing the phase angle of the camshaft from varying relative to the first circular rotational body even if the camshaft is subjected to the reaction of a valve spring, and capable of reducing the impulsive generated in the phase variable device and delivered to the engine. MEANS FOR ACHIEVING THE OBJECT12-16-2010
20110232595VALVE TIMING CONTROL APPARATUS - A valve timing control apparatus includes a driving-side rotating member, a driven-side rotating member, a fluid pressure chamber defined by the driving-side rotating member and the driven-side rotating member and divided into a retarded angle chamber and an advanced angle chamber by a parting portion, an angle detecting portion detecting a relative angle of the driven-side rotating member relative to the driving-side rotating member, a fluid control mechanism controlling a supply and a discharge of an operation fluid to and from the fluid pressure chamber, an acceleration operation quantity detecting mechanism detecting an acceleration operation quantity, and a control portion setting either a normal drive mode or an acceleration drive mode as a control mode relative to the fluid control mechanism based on the acceleration operation quantity, and controlling the fluid control mechanism so that the relative angle corresponds to a target angle determined based on the set control mode.09-29-2011
20130152890CAMSHAFT ADJUSTER ARRANGEMENT AND CAMSHAFT ADJUSTER - A camshaft adjuster arrangement (06-20-2013
20130180486VARIABLE CAMSHAFT TIMING MECHANISM WITH A DEFAULT MODE - A variable cam timing phaser with a control valve for directing fluid from a fluid input to and from the advance chamber and the retard chamber of the phaser through an advance line, a retard line, a common line, an advance default line, a retard default line, and at least one exhaust line. The control valve being movable between a default mode and an oil pressure actuated mode. In the default mode, the control valve blocks exhaust lines, retaining fluid within the chambers. The oil pressure actuated mode includes at least an advance mode, a retard mode, and a holding position.07-18-2013
20130180485CONTROLLER FOR INTERNAL-COMBUSTION ENGINE - A controller for an internal-combustion engine 07-18-2013
20110303171VALVE TIMING CONTROLLER - A valve timing controller has a case which defines a fluid chamber therein. A magnetic viscosity fluid is enclosed in the fluid chamber. The magnetic viscosity fluid including magnetic particles and its viscosity varies according to a magnetic field applied thereto. A coil and a control circuit applies magnetic field to the magnetic viscosity fluid to variably control a viscosity thereof. A brake rotor is rotatably accommodated in the fluid chamber and receives a brake torque from the magnetic viscosity fluid according to the viscosity thereof. A phase adjusting mechanism is connected to the brake rotor for adjusting a relative rotational phase between the crankshaft and the camshaft according to the brake torque. When it is estimated that the engine will be started, the coil is energized to generated heat in the magnetic viscosity fluid.12-15-2011
20110303170Valve Timing Adjusting Device - A sealing structure seals a clearance between a housing and a brake rotor. The housing defines a fluid chamber for sealing a magnetic viscous fluid inside. The brake rotor penetrates through the housing and generates brake torque by contacting the magnetic viscous fluid. The housing has a magnetic sleeve section and a magnetic screw section provided to the brake rotor. The magnetic sleeve section is continuous in a rotational direction of the brake rotor and generates a magnetic flux. The magnetic screw section is an external screw having a screw thread, which extends away from a fluid chamber side toward a phase adjusting mechanism side when traced in a rotational direction of the brake rotor. The magnetic flux is guided to the magnetic screw section through a sealing gap between the magnetic screw section and an inner peripheral section of the magnetic sleeve section.12-15-2011
20110308488Continuous Variable Valve Timing Apparatus - A continuously variable valve timing apparatus may include an end plate connected to a camshaft, a drive sprocket rotating the end plate, a first friction plate disposed to be coaxial to the end plate, a second friction plate disposed to be coaxial to the end plate, a first brake selectively braking the first friction plate, a second brake selectively braking the second friction plate, and a control gear portion which changes relative phase between the end plate and the drive sprocket according to braking of the first friction plate or the second friction plate.12-22-2011
20120017859VARIABLE VALVE TIMING APPARATUS FOR INTERNAL COMBUSTION ENGINE - A variable valve timing apparatus includes; a variable valve timing mechanism; an intermediate locking mechanism that locks the valve timing at an intermediate timing; and a hydraulic pressure supply device that hydraulically actuates these mechanisms. The hydraulic pressure supply device uses a single oil control valve to control a state where lubricating oil is supplied to or drained from each of an advance chamber, a retard chamber and an intermediate chamber of an intermediate locking mechanism. The oil control valve has first to fourth modes. The oil control valve advances the valve timing and actuates the intermediate locking mechanism in a projecting direction in the third mode, and, under a situation that the amount of lubricating oil supplied to the variable valve timing mechanism is smaller than that in the third mode, advances the valve timing and actuates the intermediate locking mechanism in a release direction in the fourth mode.01-26-2012
20130192551VALVE TIMING CONTROLLER AND ASSEMBLING METHOD OF THE SAME - A valve timing controller includes a reed valve interposed between an end surface of a vane rotor and an end surface of a driven shaft. The reed valve has a fixed part, a first reed part and a second reed part. Each of the first reed part and the second reed part has each lower limit pressure for allowing working oil to flow from a first supply passage to a second supply passage. The lower limit pressure of the first reed part is different from the lower limit pressure of the second reed part.08-01-2013
20130192552PHASE VARYING APPARATUS FOR AUTOMOBILE ENGINE TECHNICAL - The inventive phase varying apparatus (08-01-2013
20130199474NON-RETURN VALVE OF A CAMSHAFT ADJUSTER - A camshaft adjuster with a drive element, a driven element, and a pressure chamber formed between the drive element and the driven element for generating a relative rotation between the driven element and the drive element, and a volume accumulator that is arranged in the camshaft adjuster and supplies hydraulic medium via a channel from the volume accumulator to the pressure chamber if there is an under-pressure in the pressure chamber. The camshaft adjuster has a non-return valve with a closing part for closing an opening of the channel, the non-return valve allows a flow of hydraulic medium through the channel from the volume accumulator to the pressure chamber, and there is an elastically expandable component that projects into the channel and can be guided by the channel and is connected to the closing part and is provided for applying tension for pulling the closing part into the channel.08-08-2013
20130199473NON-RETURN VALVE FOR CAMSHAFT ADJUSTERS WITH OIL RESERVOIRS - A camshaft adjuster (08-08-2013
20130199475FILLING OF A VOLUME ACCUMULATOR IN A CAMSHAFT ADJUSTER - A directional valve (08-08-2013
20130199476NON-RETURN VALVE OF A CAMSHAFT ADJUSTER08-08-2013
20130199477CAMSHAFT ADJUSTER HAVING A NON-RETURN VALVE - A camshaft adjustor (08-08-2013
20130199479ROTOR FOR A CAMSHAFT PHASER, AND CAMSHAFT PHASER - A rotor for a camshaft phaser includes a hub part having an oil supply passage, at least one vane radially disposed on the hub part, as well as oil channels extending through the hub part and fluidically connected to the oil supply passage. The manufacture of the rotor is considerably simplified because the rotor is made up of a main body and at least one cover element arranged on an end face of the main body. The oil channels are axially closed by the cover element.08-08-2013
20130199478VALVE TIMING CONTROLLER - A valve timing controller includes a lock mechanism that locks a rotation phase at a main lock phase when an internal combustion engine is started with an ambient temperature more than or equal to a preset temperature. The main lock phase represents a rotation phase set for closing an intake valve at a later timing later than a timing when a piston reaches a bottom dead center of a cylinder in the internal combustion engine. The lock mechanism locks the rotation phase at a sub lock phase representing a rotation phase advanced rather than the main lock phase in the internal combustion engine when the internal combustion engine is started with an ambient temperature lower than the present temperature.08-08-2013
20120085304CAM SHAFT ADJUSTER AND METHOD FOR ADJUSTING THE ANGLE-OF-ROTATION POSITION OF A CAM SHAFT RELATIVE TO A CRANKSHAFT - A cam shaft adjuster for adjusting the angle-of-rotation positions of a cam shaft relative to a crankshaft. The cam shaft adjuster has at least two operating chambers to which pressure oil can be supplied to change the angle-of-rotation position. At least one of the operating chambers can be deactivated depending on an operating parameter by blocking the pressure oil supply.04-12-2012
20130206089VARIABLE CAM PHASER FOR AUTOMOBILE ENGINE AND CONTROLLER THEREFOR - This invention provides an improved variable cam phaser for an automobile engine equipped with a controller capable of enabling execution of a given phase angle varying command in a shortened response time. The variable cam phaser has two control rotors which are arranged coaxial with a camshaft and rotatable relative to each other under the influence of two electromagnetic actuators and driven by the crankshaft of the engine. The variable cam phaser also has a relative phase angle varying mechanism for varying the relative phase angle of the camshaft relative to the crankshaft. When the two electromagnetic actuators are simultaneously energized, the two control rotors are held mutually unrotatable. However, when the braking torque of one actuator is reduced, the control rotor associated with that actuator is rotated relative to the other control rotor to immediately start the execution of the command.08-15-2013

Patent applications in class Camshaft or cam characteristics

Patent applications in all subclasses Camshaft or cam characteristics