Patent application number | Description | Published |
20080236529 | Control Valve for a Device for Changing the Control Times of an Internal Combustion Engine - A control valve ( | 10-02-2008 |
20080245324 | Control Valve - A control valve ( | 10-09-2008 |
20080245983 | Hydraulic Directional Valve - An electromagnetic actuating unit ( | 10-09-2008 |
20080264200 | Feeder for a Camshaft Adjuster - A feeder for a camshaft adjuster is provided, including a central screw, a camshaft, and at least one flow resistance element. The camshaft is provided with a bore for accommodating the central screw. A channel is located between the camshaft and the central screw, in which the flow resistance element is provided in order to affect a flow of a fluid in the channel. | 10-30-2008 |
20080271689 | Control 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 |
20090134349 | Control Valve for a Camshaft Adjuster - A control valve for a hydraulic adjuster for the camshaft of an internal combustion engine is provided, wherein an actuator acts on a pressure part ( | 05-28-2009 |
20090159829 | CONTROL VALVE FOR A CAMSHAFT ADJUSTER - A control valve ( | 06-25-2009 |
20090200502 | ELECTROMAGNETIC ACTUATOR FOR A HYDRAULIC DIRECTIONAL CONTROL VALVE - An electromagnetic actuator for a hydraulic directional control valve is provided. The electromagnetic actuator is used for adjusting a hydraulic directional control valve, for example, for the variable adjustment of the control times of an internal combustion engine. The electromagnetic actuator includes a housing ( | 08-13-2009 |
20090230337 | HYDRAULIC CONTROL VALVE - A hydraulic control valve ( | 09-17-2009 |
20100025606 | ELECTROMAGNETIC ACTUATION UNIT - The invention relates to an electromagnetic actuation unit ( | 02-04-2010 |
20100163128 | HYDRAULIC DIRECTIONAL VALVE - A hydraulic directional valve having an electromagnetic actuating unit and a valve section, an essentially cylindrical, blind hole-like receptacle being formed on one component of the actuating unit, a flange section of a valve housing of the valve section engaging in the receptacle, the flange section being provided with an angular groove which extends in a circumferential direction, and an essentially hollow cylindrical wall of the receptacle in the region of the annular groove engaging in said annular groove in such a way that it bears on the groove base of the annular groove, along the entire circumference of said annular groove. The torsional rigidity between the flange section and the wall is increased. In this context, particular emphasis is placed on processing reliability and economic viability of the connecting process. | 07-01-2010 |
20100288384 | HYDRAULIC CONTROL VALVE HAVING INTEGRATED CHECK VALVE - A hydraulic control valve for controlling pressurizing medium flows, which has a hydraulically unlockable cheek valve that includes a closing element by which a valve opening can be closed. The closing element is equipped with at least one through-hole such that a locking part that is spring-loaded via at least one flexible tongue is formed for locking the valve opening. | 11-18-2010 |
20100327209 | HYDRAULIC MEDIUM INSERT FOR A CONTROL VALVE IN A HYDRAULIC ACTUATOR - A hydraulic medium insert for a control valve in a hydraulic actuator which has a tubular guide sleeve for guiding a control piston, which is disposed in a receptacle, which has passage openings for the hydraulic medium, which are disposed in the guide sleeve and separated by webs. A plastic part is disposed on the exterior side of the guide sleeve and has sealing webs, which are supported on the inside on the webs of the guide sleeve, which separate the passage openings, and press against the inside of the receptacle to form a seal on the outside. | 12-30-2010 |
20110000447 | CONTROL VALVE - A control valve, particularly for a device for altering the actuation periods of an internal combustion engine, which has a valve housing that is configured with a substantially hollow cylindrical structure, a control piston disposed inside the valve housing and is axially displaceable therein, and a closing element. The control piston has at least one section with a hollow structure that ends in an opening of the control piston and the closing element is disposed in the opening. | 01-06-2011 |
20110005482 | DEVICE 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, a control valve and counter-working pressure chambers. Phase adjustment between the output and drive element is initiated by applying pressure to one of the pressure chambers while discharging the other pressure chamber. The rotation angle limiting device, which can be transferred from a locked state into an unlocked state due to pressure, prevents phasing when locked and allows phasing when unlocked. The control valve has a valve housing and a control piston. An inflow connection, an outflow connection, a first and a second working connection and a third working connection are embodied on the valve housing. The working connections are offset in relation to other and do not overlap on the valve housing. | 01-13-2011 |
20110084018 | RING FILTER - A ring filter with a frame and a filter fabric. The frame has two axially spaced apart ring-shaped frame elements which are connected to one another by transverse struts. Between the frame elements and the transverse struts the filter fabric is arranged, and frame has two open ends which are located opposite each other in the circumferential direction. | 04-14-2011 |
20110121214 | ELECTROMAGNETIC ACTUATING UNIT - An electromagnetic actuating unit for a hydraulic valve with a housing and a closure element. The housing at least partially delimits the electromagnetic actuating unit in relation to the surroundings. The closure element is arranged within an introductory opening of the housing. A sealing-means receptacle is formed on a boundary surface between the housing and the closure element. Furthermore, at least one first channel leads into the sealing-means receptacle and is open towards the surroundings of the actuating unit. A sealing element, which is arranged in the sealing-means receptacle, is placed into the sealing-means receptacle via the first channel. | 05-26-2011 |
20110121218 | ELECTROMAGNETIC ACTUATING UNIT OF A HYDRAULIC DIRECTIONAL VALVE - An electromagnetic actuating unit of a hydraulic directional valve, which has an armature and a first and a second magnet yoke. The first and the second magnet yokes at least partially bind an armature space, the armature is arranged in the armature space so as to be axially displaceable, and the first and the second magnet yokes face each other in the axial direction of the armature. | 05-26-2011 |
20110174253 | DEVICE 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 |
20110204269 | ACTIVATION ELEMENT OF AN ELECTROMAGNETIC ACTUATING UNIT OF A HYDRAULIC VALVE - An activation element of an electromagnetic actuating unit of a hydraulic valve which has an armature that is essentially cylindrical and which is arranged in a slidable fashion in the actuating unit. Also, a method for manufacturing an activation element of an electromagnetic actuating unit of a hydraulic valve. The activation element has at least one substantially cylindrical armature, one plunger rod and one magnet cone. The plunger rod and the magnet cone are embodied in one piece with the armature. | 08-25-2011 |
20110220826 | ELECTROMAGNETIC ACTUATING UNIT FOR A HYDRAULIC DIRECTIONAL CONTROL VALVE AND METHOD FOR THE ASSEMBLY THEREOF - An electromagnetic actuating unit for a hydraulic directional control valve and to a method for the assembly thereof. The actuating unit has a coil for generating a magnetic field, a yoke unit with a yoke and a yoke plate, and a pole core unit with a pole core and a housing for conducting a magnetic flux, and an armature unit which is arranged in the magnetic field of the coil and has an armature and a pressure pin as an actuator. The armature unit can be displaced in the direction of the longitudinal axis thereof in a first bearing point in the yoke unit and in a second bearing point in the pole core unit. At least one of the hearing points can be displaced in the radial direction during assembly of the actuating unit and can be fixed after a coaxial orientation of both bearing points. | 09-15-2011 |
20110226204 | FILTER 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 |
20110232781 | HYDRAULIC DIRECTIONAL VALVE - A hydraulic directional valve which has a valve housing and a filter element. At least one groove encircles the valve housing and the filter element is arranged in the groove and has at least one frame element and a filter fabric which is firmly connected to the frame element. The groove has a groove base and two side walls which extend substantially in the radial direction and circumferential direction. | 09-29-2011 |
20110232788 | ELECTROMAGNETIC ACTUATING UNIT - A hydraulic directional control valve which has a valve housing and a control piston that is arranged therein in a displaceable manner. The valve housing has at least one outflow connection, at least one inflow connection and a working connection. The control piston has a main body and at least one control section. The control section controls a pressure medium flow from the inflow connection to the working connection and/or a pressure medium flow from the working connection to the outflow connection, and the control section is made separately from the main body and is fastened thereon. | 09-29-2011 |
20110285484 | PROPORTIONAL MAGNET FOR A HYDRAULIC DIRECTIONAL CONTROL VALVE AND METHOD FOR THE PRODUCTION THEREOF - A proportional magnet for a hydraulic directional control valve and a method for the production thereof. The proportional magnet has a coil unit, a bearing unit and a pole disk. The coil unit has a cylindrical coil, a cylindrical magnet casing surrounding the coil, an annular yoke disc arranged at a face of the magnet casing and a housing. The bearing unit has a yoke with a first bearing point, a pole core with a second bearing point, and an armature unit with a magnet armature and a pressure pin. The bearing points and armature unit are aligned coaxially by a centering sleeve. When mounting the proportional magnet, the bearing unit is inserted into a cylindrical opening of the coil unit and the pole disc is put on the coil unit after the bearing unit is inserted for axially fixating the bearing unit and closing the magnetic circuit. | 11-24-2011 |
20110309281 | CONTROL VALVES FOR CONTROLLING PRESSURE MEDIUM FLOWS - A control valve for controlling pressure medium flows, which has a cylindrical valve housing with a housing cavity The housing cavity is open at one side and has an axial outflow port, a radial first working port, a radial second working port, a radial third working port and two radial pressure ports which each open into the housing cavity. A first pressure port is arranged axially between the first working port and the second working port, and a second pressure port is arranged axially between the second working port and the third working port. Also, the control valve has a cylindrical control piston, which is axially movable within the housing cavity and has a piston cavity open at one side in the direction of the outflow port. | 12-22-2011 |
20120073535 | CONTROL VALVE FOR CONTROLLING PRESSURE-MEDIUM FLOWS COMPRISING AN INTEGRATED CHECK VALVE - A control valve for controlling pressure medium flows, including: a valve housing having a hollow construction and having at least one feed connection, at least two working connections, and at least one discharge connection; a control piston held displaceably inside the valve housing, through which, dependent on position, the feed connection can be connected via at least one pressure medium line to the one or to the other working connection, while the respectively other working connection is connected via at least one second pressure medium line to the discharge connection. The control piston has a piston cavity and the first pressure medium line includes a feed opening allocated to the feed connection and a discharge opening allocated to the working connections, with each of these openings opening into the piston cavity. At least one check valve that can be hydraulically opened and that releases the first pressure medium line in the feed direction is provided, having a closing part that has a sealing surface, by which part a valve opening can be closed. The control valve has an elastically deformable closing part, such that the sealing surface thereof is movable, through elastic deformation of the closing part, into a closed position in which it lies against the valve opening in sealing fashion and an open position in which the valve opening is completely open, one of the openings of the control piston acting as valve opening. Alternatively, the closing part is mounted resiliently via at least one spring tongue. | 03-29-2012 |
20120091384 | FLAT GASKET - A flat gasket arranged between a component that is fixed to the cylinder head and a housing that accommodates a camshaft adjuster. The flat gasket has a flat gasket body encompassing a surface to be sealed. On the gasket body, a convexity is formed, which encompasses the surface to be sealed and protrudes from the surface of the gasket body. | 04-19-2012 |
20120111296 | CENTRAL VALVE OF A CAMSHAFT ADJUSTER OF AN INTERNAL COMBUSTION ENGINE - A central valve of a camshaft adjuster of an internal combustion engine, which has a valve housing, a control piston, and a mounting flange. The valve housing is arranged, at least in part, inside a receptacle inside the camshaft adjuster. The valve housing has at least one inflow connection, one outflow connection, and one working connection. The control piston is arranged axially slidable inside the valve housing. The pressure fluid, which flows to and from the camshaft adjuster, can be controlled by the suitable positioning of the control piston inside the valve housing. Also, the mounting flange is fixedly connected to a wall section of the receptacle, thus determining the axial position of the valve housing relative to the camshaft adjuster. | 05-10-2012 |
20120210962 | FASTENING 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 |
20120312262 | CAMSHAFT ADJUSTING DEVICE - A camshaft adjusting device ( | 12-13-2012 |
20120312396 | PROPORTIONAL VALVE, IN PARTICULAR FOR A CAMSHAFT ADJUSTER - A proportional valve ( | 12-13-2012 |
20120319018 | ELECTROMAGNETIC HYDRAULIC VALVE - An electromagnetic hydraulic valve, having a solenoid ( | 12-20-2012 |
20130019830 | CONTROL 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 |
20130199467 | CAMSHAFT ADJUSTER - A central valve ( | 08-08-2013 |
20130199634 | CONTROL VALVE FOR HYDRAULIC MEDIA - A control device for hydraulic media with a control valve, in particular, a proportional valve that has a sleeve housing provided with radial openings, wherein at least one pressurized flow feed line, at least one control line, and at least one return line are connected to the openings, and the opening for the pressurized flow feed line is connected to a ring-shaped groove, with a control slide that has control edges and is supported in the sleeve housing so that it can move in the axial direction and is actuated by an electromagnetically constructed control unit, advantageously for controlling a phase adjustment device for the variable adjustment of the control times of gas exchange valves of a reciprocating piston internal combustion engine. A non-return valve is installed in the pressurized flow feed line or in the ring-shaped groove that is arranged in the sleeve housing. | 08-08-2013 |
20130200289 | CONTROL VALVE FOR A CAM SHAFT ADJUSTER - A control valve for a cam shaft adjuster, including a valve housing and a control piston, which is designed as an injection-molded product and is axially displaceably mounted within the valve housing and which has a substantially tubular main body, wherein the control piston, on an end face, has an actuating surface for a control component. To this end, the control piston includes, at an end thereof, an axially extending molded-on component which includes a gate point on one of the lateral faces thereof. Such a design of a control valve allows the control piston to be securely guided within the valve housing at low manufacturing cost of the control piston. | 08-08-2013 |
20130213330 | CENTRAL VALVE FOR A CAMSHAFT ADJUSTER - A central valve ( | 08-22-2013 |
20130228143 | FILTER ARRANGEMENT OF A CONTROL VALVE FOR A CAMSHAFT ADJUSTER - A filter arrangement ( | 09-05-2013 |
20140048027 | HOUSING BELL WITH INTEGRATED PRESSURE ACCUMULATOR HAVING A FLANGED COVER - A pressure accumulator for a camshaft phaser of an internal combustion engine, including a housing that accommodates a piston and forms a cavity fillable with a hydraulic fluid. The cavity is configured as a hole and is closed by a cover on at least one side so as to be fluid-tight, whereby the cover is fastened to the housing by a flanged connection. A method for the production of a pressure accumulator for a camshaft phaser, including a pressure accumulator that forms a cavity, whereby a piston is placed into the cavity, and subsequently, a cover is put in place over the cavity—sealing it off towards the outside—in such a way that a material portion of the housing or of the cover creates such a positive connection between the cover and the housing that the cover is affixed in its position relative to the housing. | 02-20-2014 |
20140131602 | SOLENOID VALVE PLATE - An electromagnetic hydraulic valve or solenoid having an electric plug, housing, magnetic coil, armature and armature pin, valve body and associated valve seat and valve plate and associated valve seat, the valve plate axially retained, but, freely floating laterally within the housing, such that the valve plate and valve plate seat is movable to align with the valve body and valve body seat. | 05-15-2014 |
20140216376 | COIL AND SOLENOID VALVE | 08-07-2014 |