Patent application number | Description | Published |
20100050966 | VALVE 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 |
20100242883 | VALVE 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 |
20100294223 | VALVE 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 |
20110073055 | VALVE 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 |
20110073056 | VALVE 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 |
20120152190 | VALVE TIMING CONTROL APPARATUS - A valve timing control apparatus includes a driving-side rotary body, a driven-side rotary body, a fluid pressure chamber partitioned into a retard angle chamber and an advance angle chamber by a partitioning portion provided in at least one of the driving-side rotary body and the driven-side rotary body, a fluid control mechanism for controlling feeding of working fluid from a working fluid pump for feeding the working fluid to the fluid pressure chamber and controlling also discharging of the working fluid from the fluid pressure chamber, a first lock mechanism capable of restraining a relative rotational phase to a first predetermined phase between a most retarded angle phase and a most advanced angle phase, and a second lock mechanism capable of restraining the relative rotational phase to a second predetermined phase different from the first predetermined phase. | 06-21-2012 |
20130112161 | VALVE TIMING CONTROL APPARATUS AND VALVE TIMING CONTROL MECHANISM - A valve timing control apparatus includes a partitioning portion in a driven-side rotary member for partitioning the fluid pressure chamber into an advance angle chamber and a retard angle chamber, a restricting member in the driven-side rotary member and projectable and retractable relative to a driving-side rotary member, a restricting recess in the driving-side rotary member and restricting a relative rotational phase to a predetermined range in association with projection of the restricting member therein, a locking member disposed in the driven-side rotary member and projectable and retractable relative to the driving-side rotary member, a locking recess formed in the driving-side rotary member and locking the relative rotational phase to the predetermined phase in association with projection of the locking member therein, a communication passage formed between the restricting member and the locking member, and an urging passage for feeding fluid for projecting the restricting member into the restricting recess. | 05-09-2013 |
20130192066 | METHOD OF ASSEMBLING VARIABLE VALVE TIMING APPARATUS - A method of assembling a variable valve timing apparatus includes steps of temporarily fixing a driven-side rotation body to a base member in a first rotation restricting state by a process of engaging a first projecting and retracting member with the base member of a driving-side rotation body and the driven-side rotation body followed by a process of rotating either the base member or the driven-side rotation body, providing a supplementary member of the driving-side rotation body to the driven-side rotation body to establish a second rotation restricting state by a process of installing the supplementary member to the base member in a state where the second projecting and retracting member engages with the supplementary member and the driven-side rotation body followed by a process of rotating either the supplementary member or the driven-side rotation body, and fastening the supplementary member and the base member by using a fastening member. | 08-01-2013 |
20130228142 | VARIABLE VALVE TIMING CONTROL APPARATUS - A variable valve timing control apparatus includes a driving side rotation member, a driven side rotation member positioned coaxially with a rotational axis of the driving side rotation member, at least one plate, a plurality of partition portions forming a fluid chamber between the partition portions, a vane portion being fitted to the fluid chamber to relatively rotate the driving side rotation member and the driven side rotation member within a movable range thereof, a restriction mechanism for restricting a relative rotational phase, a fastening member fixing the plate and the partition portion of the driving side rotation member, and a reinforcement member engaged with the partition portion including a contact surface among the partition portions, the contact surface being configured to receive a contact of the vane portion when the relative rotational phase is either at a most retarded angle phase or a most advanced angle phase. | 09-05-2013 |
20130233262 | VARIABLE VALVE TIMING CONTROL APPARATUS - A variable valve timing control apparatus includes a driving side rotating member, a driven side rotating member, a fluid pressure chamber, an advanced angle chamber, a retarded angle chamber, an intermediate lock mechanism including a locking member and a locking hole engaged with the locking member when the locking member comes to protrude, the intermediate lock mechanism being configured to switch between a locked state and an unlocked state, a relative rotational phase of the driven side rotating member relative to the driving side rotating member being restrained at an intermediate phase in the locked state, a valve allowing a fluid to be discharged when electricity is supplied thereto and allowing the fluid to be supplied when supply of electricity is interrupted, and a control portion, wherein the supply of the electricity to the valve is interrupted after a pressure of the fluid starts to decrease. | 09-12-2013 |
20130312680 | VALVE TIMING CONTROL APPARATUS - A variable valve timing control apparatus includes a driving side rotation member synchronously rotating with a crankshaft of an internal combustion engine, a driven side rotation member including a rotation peripheral surface, an intermediate lock mechanism for locking a rotational phase of the driven side rotation member at an intermediate phase between a most retarded angle phase and a most advanced angle phase, and a fixed member fixed to the internal combustion engine and including a fixed peripheral surface facing the rotation peripheral surface of the driven side rotation member. Plural seal rings each formed in an annular shape are positioned between the rotation peripheral surface of the driven side rotation member and the fixed peripheral surface of the fixed member, the seal rings positioned spaced apart from each other by a predetermined distance. The seal ring sandwiched between two of a communication portion for advanced angle, a communication portion for retarded angle, and a communication portion for lock in a direction of the rotational axis among the plural seal rings includes a communication passage which establishes constant communication between both sides thereof in association with the direction of the rotational axis when temperature of the pressurized fluid is within a temperature range which allows a control of the rotational phase of the driven side rotation member. | 11-28-2013 |
20140033999 | VALVE TIMING CONTROL DEVICE - Provided is a valve timing control device, including a drive side rotating member, a driven side rotating member, and a locking mechanism, in which the locking mechanism includes a regulating body, and n stepped portions with which the regulating body engages, the relative rotation phase is regulated in steps from a most retarded phase or most advanced phase until reaching the lock phase, and the positional relationship between the stepped portions and regulating body is set so that, among relative rotations of from a first relative rotation of from the most retarded phase or most advanced phase to a first relative rotation phase regulated by a first stepped portion to a last relative rotation to a last relative rotation, a first predetermined relative rotation other than the last relative rotation is the smallest. | 02-06-2014 |
20140041606 | VALVE TIMING CONTROL DEVICE - Provided is a valve timing control device, including: a drive side rotating member, a driven side rotating member, fluid pressure chambers, partition portions, advanced angle control oil passages, retarded angle control oil passages, an intermediate lock mechanism, and a retarded angle lock mechanism, in which the intermediate lock mechanism is configured to include a single intermediate lock member, a biasing mechanism which biases the intermediate lock member, and an intermediate fitting depression portion, and the retarded angle lock mechanism is configured to include a single retarded angle lock member, a biasing mechanism which biases the retarded angle lock member, and a retarded angle fitting depression portion. | 02-13-2014 |
20140060469 | VALVE OPENING-CLOSING TIMING CONTROL APPARATUS - A valve opening-closing timing control apparatus includes an intermediate phase retaining mechanism retaining the relative rotational phase of a driven-side rotational member relative to the driving-side rotational member at an intermediate phase that is a phase between most retarded angle phase and most advanced angle phase. The driving-side rotational member synchronously rotates with a crankshaft of an internal combustion engine. The driven-side rotational member integrally rotates with a camshaft of the internal combustion engine and makes relative rotations relative to the driving-side rotational member. The valve opening-closing timing control apparatus further includes a state variable acquisition portion acquiring a state variable relating to the internal combustion engine and a phase controller displacing the relative rotational phase to the intermediate phase on condition that the relative rotational phase is at a retarded angle phase at a time at which the internal combustion engine stops and the state variable satisfies a predetermined condition. | 03-06-2014 |
20140060470 | VALVE OPEN/CLOSE TIMING CONTROL SYSTEM - Provided is a valve open/close timing control system where a valve open/close timing control device includes a drive-side rotating member, a driven-side rotating member, a relative rotational phase control mechanism, and a first locking member, in which the internal combustion engine is configured to be started by a drive force generated by a traveling motor or by a drive force generated by a starter motor, and the valve open/close timing control system also includes a control unit which is configured, for starting the internal combustion engine while changing the relative rotational phase at the time of starting the internal combustion engine, to drive the starter motor or the traveling motor at the time of starting the internal combustion engine at the first locking phase, and to drive the traveling motor at the time of starting the internal combustion engine at the second locking phase. | 03-06-2014 |
20140069360 | VALVE OPEN/CLOSE TIMING CONTROL DEVICE - Provided is a valve open/close timing control device including, a drive-side rotating body, a driven-side rotating body, a fluid pressure chamber, a partition portion, a fluid control valve part, a first locking mechanism which is capable of restraining a relative rotational phase of the driven-side rotating body relative to the drive-side rotating body at a first predetermined phase between a most retarded angle phase and a most advanced angle phase, and a second locking mechanism which is capable of restraining the relative rotational phase at a second predetermined phase on a more retarded angle side than the first predetermined phase, in which the relative rotational phase is changed to the first predetermined phase when a shift lever position is changed to a parking range. | 03-13-2014 |
20140076254 | VALVE OPENING-CLOSING TIMING CONTROL APPARATUS - A valve opening-closing timing control apparatus includes a partition portion partitioning a fluid pressure chamber into an advanced angle chamber and a retarded angle chamber, a phase control portion controlling a rotational phase of a driven-side rotational member relative to a driving-side rotational member, a lock mechanism including a lock member and a lock recess for locking the rotational phase at a predetermined phase, a lock control portion switching the lock mechanism between a locked state and an unlocked state by supplying and discharging a pressurized fluid to and from the lock recess, a phase controlling supply passage supplying the pressurized fluid to the advanced angle chamber and the retarded angle chamber, a lock controlling supply passage supplying the pressurized fluid to the lock recess, and a one-way valve blocking the pressurized fluid supplied to the lock controlling supply passage from flowing into the phase controlling supply passage. | 03-20-2014 |
20140130755 | VALVE TIMING CONTROL DEVICE AND VALVE TIMING CONTROL MECHANISM - A valve timing control device is switchable between a first state in which a fluid is supplied to a communication flow path to lift a restriction by a restriction member and release a lock by a lock member, a second state in which the fluid is supplied to a retarded angle chamber to release the lock by the lock member and set the restriction by the restriction member, and a third state in which the restriction member is restricted and the lock member is locked without supplying the fluid to the communication flow path and supplying the fluid to the retarded angle chamber, and is configured such that the minimum cross-sectional area of an advanced passage for supplying the fluid to an advanced chamber is greater than the minimum cross-sectional area of a retarded passage for supplying the fluid to the retarded angle chamber. | 05-15-2014 |
20140150744 | VALVE TIMING ADJUSTING SYSTEM - A valve timing adjusting system includes a displacement mechanism unit that displaces a camshaft rotational phase relative to a crankshaft, a locking mechanism unit that locks the rotational phase, and a control unit that controls operations of a hydraulic control valve. The control unit includes a property obtainment unit that obtains property information regarding hydraulic properties, and a lock release process completes locking release by supplying oil pressure to the locking mechanism unit for moving the rotational phase from an intermediate locked phase toward one of a retard/advance position, and then supplying oil pressure to the locking mechanism unit for moving the rotational phase toward the other of the retard/advance position; the rotational phase stands by at a predetermined position of the one of the retard/advance position past the intermediate locked phase during the lock release process, until a standby time has elapsed. | 06-05-2014 |
20140202409 | SOLENOID VALVE AND VALVE OPENING-CLOSING TIMING CONTROL DEVICE - A valve opening-closing timing control device includes a solenoid valve having a solenoid mechanism provided with a spool having an oil path groove formed in an outer face thereof, and a sleeve for housing the spool to reciprocate and slide. A wall surface of the sleeve has a first port communicating with a first hydraulic oil supply section, a second port communicating with a second hydraulic oil supply section, and a third port communicating with the side of a hydraulic oil supply source. The spool is driven and set to a first position for supplying hydraulic oil from the hydraulic oil supply source to the first port, a second position for supplying the hydraulic oil from the hydraulic oil supply source to the second port, and a third position outside an area between the first and second positions to prevent supply of hydraulic oil from the first and second ports. | 07-24-2014 |
20140216377 | VALVE TIMING ADJUSTMENT SYSTEM - Provided is a valve timing adjustment system having improved control for achieving a target rotational phase. The valve timing adjustment system includes: a displacement mechanism unit that displaces a rotational phase of a camshaft relative to a crankshaft of an internal combustion engine; a locking mechanism unit that locks the rotational phase at an intermediate locked phase positioned within a displacement range of the rotational phase; a hydraulic pathway that hydraulically drives the displacement mechanism unit and the locking mechanism unit; and a control unit including a control system that controls operations of the hydraulic control valve. The control unit changes a temporal responsiveness of the control system based on a displacement force that displaces the rotational phase. | 08-07-2014 |
20140251245 | VALVE TIMING CONTROL APPARATUS - A valve timing control apparatus includes a driving-side rotation member, a driven-side rotation member, a first lock mechanism selectively achieving a first lock state in which a relative rotation phase of the driven-side rotation member relative to the driving-side rotation member is locked at an intermediate lock phase and a first lock release state, and a second lock mechanism selectively achieving a second lock state in which the relative rotation phase is locked at one of a most advanced angle phase and a most retarded angle phase and a second lock release state, the driven-side rotation member being rotatable relative to the driving-side rotation member by a first clearance angle in the first lock state, the driven-side rotation member being rotatable relative to the driving-side rotation member by a second clearance angle in the second lock state, the second clearance angle being smaller than the first clearance angle. | 09-11-2014 |
20140251248 | VALVE TIMING CONTROL APPARATUS - A valve timing control apparatus includes a driving-side rotation member, a driven-side rotation member, and a lock mechanism including a recess portion, a lock member engageable and disengageable relative to the recess portion, and a biasing member. The recess portion includes a lock groove portion with which the lock member is configured to engage to lock a relative rotation phase at a lock phase, and a restriction groove portion. The lock groove portion includes a lock bottom surface and the restriction groove portion includes a restriction bottom surface. A second depth from an opening position of the recess portion to the restriction bottom surface is smaller than a first depth from the opening position to the lock bottom surface. The second depth from the opening position to the restriction bottom surface is smaller than a third depth from the restriction bottom surface to the lock bottom surface. | 09-11-2014 |
20140283769 | INTERNAL COMBUSTION ENGINE - An internal combustion engine includes a variable valve timing control apparatus including a driving-side rotating member rotating about a rotary axis by rotational force transmitted from a crankshaft, a driven-side rotating member including at least one fluid pressure chambers partitioned and formed with at least one advanced angle chambers and at least one retarded angle chambers and integrally rotating with a camshaft for opening and closing a valve, and a lock mechanism configured with a lock member provided at one of the driving-side rotating member and the driven-side rotary member to be engageable and disengageable with a recessed portion formed at the other of the driving-side rotating member and the driven-side rotary member, and an engine control unit for stopping the internal combustion engine to position a portion where the lock mechanism is formed below a virtual line passing through the rotary axis when the internal combustion engine is stopped. | 09-25-2014 |
20150033907 | VARIABLE VALVE TIMING CONTROL APPARATUS - A variable valve timing control apparatus includes a driving-side rotation member rotating in synchronization with a crankshaft of an internal combustion engine, a driven-side rotation member integrally rotating with a camshaft of the internal combustion engine, an intermediate lock mechanism being selectively switchable between a locked state and an unlocked state, a plurality of hydraulic chambers, at least one of the plurality of hydraulic chambers being positioned at a lower side than an axis of the camshaft, a plurality of partition portions, each of the plurality of partition portions dividing each of the hydraulic chambers into an advanced angle chamber and a retarded angle chamber, an electromagnetic valve including a supply and discharge port that is positioned at an upper side than the axis of the camshaft and switching supply and discharge of fluid relative to the hydraulic chambers, and a pump supplying fluid to the electromagnetic valve. | 02-05-2015 |
20150034033 | VARIABLE VALVE TIMING CONTROL DEVICE - A variable valve timing control device includes a driving side rotation member configured to synchronously rotating with a crankshaft, a driven side rotation member positioned coaxially to the driving side rotation member and integrally rotating with a camshaft, an intermediate lock mechanism selectively switching a locked state and an unlocked state, a first electromagnetic valve arranged at a position coaxial to the driving side rotation member and for controlling an supply and draining of an operation fluid relative to the fluid pressure chamber, a second electromagnetic valve positioned being offset from the position coaxial to the driving side rotation member and for controlling a supply and draining of the operation fluid flowing from the camshaft to the intermediate lock mechanism separately from the first electromagnetic valve, and a pump supplying the operation fluid to the first electromagnetic valve and the second electromagnetic valve. | 02-05-2015 |
20150053158 | VARIABLE VALVE TIMING CONTROL APPARATUS - A variable valve timing control apparatus includes a driving-side rotation member, a driven-side rotation member, an intermediate lock mechanism including first and second lock members, first and second recess portions, and a guide groove, a sensor, and a control portion. The control portion performs a control so that the relative rotation phase is changed until a first stop state is established in a state where the relative rotation phase is in an unlocked state and one of the first and second lock members is positioned relative to one of the first and second recess portions at which the guide groove is formed at a side opposite from a side where the guide groove is formed. The control portion reverses a change direction of the relative rotation phase after the first stop state is established so that the relative rotation phase is changed until a second stop state is established. | 02-26-2015 |
20150059669 | VARIABLE VALVE TIMING CONTROL DEVICE - A variable valve timing control device includes a driving side rotation member, a driven side rotation member, a control valve controlling a supply and draining of an operation fluid to and from a fluid pressure chamber to change a relative rotational phase of the driven side rotation member relative to the driving side rotation member, an intermediate member positioned inwardly of the driven side rotation member between the driven side rotation member and a camshaft, the intermediate member including the control valve inwardly thereof; and a torsion spring retained by the driving side rotation member and the intermediate member to bias the driving side rotation member and the driven side rotation member either in a first rotation direction or a second rotation direction. | 03-05-2015 |
20150059670 | VARIABLE VALVE TIMING CONTROL DEVICE - A variable valve timing control device includes a driving side rotation member, a driven side rotation member, a fluid pressure chamber, a first flow path and a second flow path allowing a flow of an operation fluid into and out of the fluid pressure chamber, an intermediate member being provided between an inner circumferential surface of the driven side rotation member and an outer circumferential surface of a camshaft, and a contact portion where the intermediate member and the driven side rotation member come in contact with each other at a position between the first flow path and the second flow path when mounting the intermediate member to the camshaft. | 03-05-2015 |
20150075459 | VARIABLE VALVE TIMING CONTROL UNIT - A variable valve timing control unit includes an intake-side variable valve timing control apparatus, an exhaust-side variable valve timing control apparatus, an intake-side phase control valve selectively performing supply and discharge of fluid relative to an advanced angle fluid passage and a retarded angle fluid passage of the intake-side variable valve timing control apparatus, an exhaust-side phase control valve selectively performing supply and discharge of the fluid relative to the advanced angle fluid passage and the retarded angle fluid passage of the exhaust-side variable valve timing control apparatus, and a single lock control valve controlling supply and discharge of the fluid relative to unlock fluid passages of the respective intake-side variable valve timing control apparatus and the exhaust-side variable valve timing control apparatus. | 03-19-2015 |