US20110192366A1 - Phase adjustment device - Google Patents

Phase adjustment device Download PDF

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Publication number
US20110192366A1
US20110192366A1 US13/066,159 US201113066159A US2011192366A1 US 20110192366 A1 US20110192366 A1 US 20110192366A1 US 201113066159 A US201113066159 A US 201113066159A US 2011192366 A1 US2011192366 A1 US 2011192366A1
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US
United States
Prior art keywords
unit
adjustment device
control actuator
phase
valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US13/066,159
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English (en)
Inventor
Thomas Gramkow
Gaby Frankowiak
Michael Wagenplast
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
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Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of US20110192366A1 publication Critical patent/US20110192366A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
    • F01L2001/34423—Details relating to the hydraulic feeding circuit
    • F01L2001/34426—Oil control valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
    • F01L2001/34423—Details relating to the hydraulic feeding circuit
    • F01L2001/34426—Oil control valves
    • F01L2001/34433—Location oil control valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
    • F01L2001/3445—Details relating to the hydraulic means for changing the angular relationship
    • F01L2001/34483—Phaser return springs

Definitions

  • the invention relates to a phase adjustment device, in particular a valve drive train phase adjustment device for adjusting the valve opening timing of an internal combustion engine with respect to the engine drive shaft.
  • a valve train phase adjustment device with a phase adjusting unit comprising a housing part, a drive means and an output means which is phase-adjustable with respect to the drive means and with a control actuator connecting unit which is provided for disposing a base unit of a control actuator unit at least partially in the housing part, wherein the phase adjusting unit comprises a valve unit which is designed to be controlled by means of the control actuator unit and which comprises a valve housing in the form of a mounting screw by means of which the output means of the phase adjusting unit is non-rotatably connected to a drive shaft, is known from DE 198 17 319 A1.
  • 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
  • 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.
  • valve spool which is particularly advantageous in terms of space requirements.
  • the space required between the phase adjusting unit and the control actuator unit can be reduced, so that the phase adjustment device is of a particularly compact design.
  • the contoured recess is preferably designed as a TORX.
  • control actuator unit should in this context in particular be understood to describe an actuator unit for the control of the phase adjusting unit.
  • actuator unit refers to a unit by means of which a control variable, for example an adjustment distance, can be controlled in dependence on a control signal of a control unit.
  • base unit should in particular be understood to describe a unit comprising parts of the control actuator unit which can be arranged to be stationary, in particular a unit with a control actuator housing and/or with a control actuator stator.
  • the stationary base unit is preferably provided to drive a movable part of the control actuator unit, such as a control actuator armature or an actuating pin.
  • the housing part is non-rotatably connected to the drive means and/or to the output means. In this way, the housing part can simply be attached to the phase adjusting unit.
  • the housing part has a recess which is provided for the accommodation of a base unit of the control actuator unit.
  • the base unit can simply be disposed within the housing part.
  • the valve unit advantageously comprises a valve spool controlled by means of the adjustment actuator unit.
  • the phase adjustment device has a cover unit which is designed to close the phase adjusting unit and which has at least one opening provided for the accommodation of the valve operating unit.
  • a location for the phase adjusting unit, in particular for the valve operating unit of the phase adjusting device, can be provided by particularly simple means.
  • valve unit comprises a central valve which at least partially connects the output means to a drive shaft.
  • additional fastening means such as a mounting screw, can be omitted, resulting in a mounting of the drive shaft which allows a compact design of the phase adjustment device.
  • the phase adjustment device further may comprise a control actuator housing which is at least partially accommodated in the housing part in an assembled state. In this way, an axial space requirement of the phase adjustment device can be reduced.
  • the control actuator housing is advantageously arranged to be stationary and assigned to the base unit of the control actuator unit.
  • the phase adjustment device may furthermore comprise an electromagnetic control actuator which is at least partially accommodated in the housing part in an assembled state providing for a compact structure.
  • the phase adjustment device further may comprise a control actuator housing which is at least partially accommodated in the housing part in an assembled state.
  • a control actuator housing which is at least partially accommodated in the housing part in an assembled state.
  • the control actuator stator is assigned to the base unit of the control actuator unit.
  • the phase adjustment device further advantageously comprises an electromagnetic control actuator which is at least partially accommodated in the housing part in an assembled state. This results in a particularly compact structure.
  • the housing part is at least partially provided for an additional phase adjusting unit.
  • the additional phase adjusting unit can also be protected in an advantageous manner.
  • the phase adjustment device advantageously comprises at least one mechanical phase adjusting means which is at least partially accommodated in the housing part.
  • a particularly fault-resistant phase adjusting unit can be provided using the phase adjusting means.
  • mechanical phase adjusting means describes an adjusting means wherein an adjusting force is provided without resort to a hydraulic, electric and/or magnetic actuator.
  • the phase adjusting means advantageously comprises a spring means. In this way, a particularly simple mechanical phase adjusting means can be implemented.
  • the mechanical phase adjusting means is preferably designed to accommodate at least a part of the base unit. In this way, an available space can be used advantageously, so that the axial space requirement in particular can be kept small.
  • the phase adjusting unit may include a coupling means which is provided for coupling the base unit of the control actuator unit rotatably to the phase adjusting unit.
  • the base unit of the control actuator unit can be arranged stationarily by particularly simple means, resulting in a particularly simple attachment of the control actuator unit to a control unit.
  • FIG. 1 is a cross-sectional view of a phase adjustment device according to the invention
  • FIG. 2 is a diagrammatic representation of the phase adjustment device
  • FIG. 3 is a cross-section al view of a valve unit of the phase adjustment device:
  • FIG. 4 is a perspective view of the valve unit.
  • FIG. 1 shows a phase adjustment device according to the invention which is designed as a motor vehicle phase adjustment device for an internal combustion engine of a motor vehicle.
  • the phase adjustment device comprises drive means 12 and output means 13 which are phase-adjustable with respect to each other.
  • the phase adjustment device comprises a hydraulic phase adjusting unit 10 .
  • the output means 13 can be non-rotatably connected to a drive shaft 22 .
  • the drive shaft 22 is designed as a camshaft.
  • the drive means 12 is coupled to a crankshaft of the internal combustion engine which is not shown in detail by means of a gear 33 .
  • the phase adjusting unit 10 comprises a vane-type adjuster 34 .
  • the phase adjusting unit 10 further comprises a valve unit 18 by means of which the phase adjusting unit 10 is controlled.
  • the vane-type adjuster 34 has pressure chambers 35 of which a part is designed for an adjustment in a first adjustment direction and a part is designed for an adjustment in a second adjustment direction.
  • Each of the pressure chambers 35 is bounded by the drive means 12 in one sub-region and by the output means 13 in the other. In the axial direction, the pressure chambers 35 are bounded by a cover unit 19 .
  • the pressure chambers 35 of the vane-type adjuster 34 can be connected to an operating fluid source not shown in detail via the valve unit 18 .
  • the phase position is adjusted by the selective application of an operating fluid pressure to the pressure chambers 35 .
  • the valve unit 18 comprises a central valve 21 .
  • the valve unit 18 is non-rotatably coupled to the output unit 13 .
  • a valve housing 36 of the valve unit 18 is in the form of a mounting screw by means of which the output means 13 of the phase adjusting unit 10 is non-rotatably connected to the drive shaft 22 .
  • one end of the valve housing 36 is designed as a contoured recess 23 into which a complementary tightening tool can be inserted.
  • the contoured recess 23 is represented by a TORX.
  • a valve spool 24 for the control of the valve unit 18 is partially accommodated within the contoured recess 23 .
  • the valve spool 24 is axially movable and, in dependence on a switching position, connects operating fluid channels to one another by means of which the pressure chambers 35 are connected to the operating fluid source or to one another.
  • the cover unit 19 is disc-shaped and has a central opening 20 .
  • the central valve 21 of the valve unit 18 is partially accommodated in the opening 20 .
  • the central valve 21 and the opening 20 have identical diameters.
  • a bearing unit is formed whereby the valve unit 18 is supported in the cover unit 19 .
  • the bearing unit is represented by a plain bearing arrangement.
  • the phase adjustment device comprises a control actuator unit 16 .
  • the control actuator unit 16 is disposed on a side of the valve unit 18 which is remote from the drive shaft 22 .
  • the valve spool 24 can be displaced in a first axial direction.
  • the valve unit 18 comprises a spring means 38 which provides a spring force which opposes an actuator force of the control actuator unit 16 .
  • the control actuator unit 16 comprises a stationary base unit 15 .
  • the base unit 15 comprises a control actuator housing 25 and parts of an electromagnetic control actuator 26 . Parts of the control actuator 26 are disposed in the control actuator housing 25 .
  • the control actuator housing 25 can be arranged to be stationary by means of a connecting structure 39 .
  • the connecting structure 39 is provided for connecting the control actuator housing 25 to the internal combustion engine.
  • the control actuator 26 comprises a control actuator stator 27 which is permanently connected to the control actuator housing 25 .
  • the control actuator stator 27 comprises an electric coil for the generation of an electric field.
  • the control actuator 26 further comprises a control actuator armature 28 which is disposed within the control actuator stator 27 .
  • the control actuator armature 28 comprises a permanent magnet.
  • the control actuator armature 28 is provided for axial displacement only.
  • a bearing unit by means of which the control actuator armature 28 supported in an axially displaceable manner inhibits a rotary movement of the control actuator armature 28 .
  • the control actuator armature 28 and the valve spool 24 which is non-rotatably connected to the output means 13 of the phase adjusting unit 10 are rotatably coupled to each other by means of an actuating pin 40 and a coupling means 32 .
  • the coupling means 32 transmits the actuator force of the control actuator 26 to the valve spool 24 of the valve unit 18 .
  • the coupling means 32 is represented by a ball arranged between two surfaces.
  • the first surface is joined to the valve spool 24 . It is designed as a flat surface.
  • the second surface is joined to the actuating pin 40 connected to the control actuator unit 16 .
  • the second surface has a recess in which the ball is accommodated. The depth of the recess is less than the diameter of the ball.
  • a contact surface between the ball and the adjoining surfaces is minimal, whereby a coupling is implemented for an axial movement combined with a simultaneous uncoupling for a rotary movement.
  • the control actuator unit 16 is connected to the phase adjusting unit 10 by means of a control actuator connecting unit 14 .
  • the phase adjusting unit 10 comprises a housing 41 which is non-rotatably connected to the drive means 12 of the phase adjusting unit 10 .
  • the housing 41 is formed by means of a housing part 11 and the cover unit 19 .
  • the cover unit 19 is non-rotatably connected to the drive means 12 .
  • Via the cover unit 19 the housing part 11 is non-rotatably connected to the drive means 12 .
  • the housing part 11 is substantially cylindrical and bounds the housing 41 in the radial direction.
  • the cover unit 19 completes the housing 41 towards the phase adjusting unit 10 .
  • the housing 41 Towards the control actuator unit 16 , the housing 41 is open.
  • the housing 41 protects the valve unit 18 in particular.
  • the housing part 11 has a central recess 17 which can accommodate a part of the base unit 15 or in which the part of the base unit 15 is located in the assembled state.
  • the housing 11 or the housing 41 and the base unit 15 of the control actuator unit 16 are arranged to overlap axially. In the radial direction, the housing 11 and the base unit 15 are arranged at a distance from each other.
  • control actuator housing 25 of the base unit 15 is partially accommodated in the recess 17 of the housing part 11 .
  • the actuating pin 40 of the control actuator unit 16 also projects into the recess 17 of the housing part 11 .
  • the major part of the coupling means 32 is located within the recess 17 .
  • the control actuator stator 27 of the base unit 15 is likewise partially accommodated in the recess 17 .
  • the control actuator armature 28 is accommodated within the recess 17 .
  • a cross-sectional surface which is oriented perpendicular to an actuating direction of the control actuator unit 16 includes the control actuator housing 25 and the control actuator armature 28 of the base unit 15 , the coupling means 32 and the housing part 11 .
  • the phase adjustment device further comprises an additional phase adjusting unit 29 within the housing part 11 .
  • the additional phase adjusting unit 29 comprises a mechanical phase adjusting means 30 which can generate a relative torque between the drive means 12 and the output means 13 in order to adjust the phase position between the drive means 12 and the output means 13 .
  • a phase adjustment by the phase adjusting unit 10 is supported in one adjustment direction.
  • the phase adjusting means 30 comprises a spring means 31 .
  • the spring means 31 is designed as a spiral spring.
  • the spring means 31 is housed in a radial space between the housing part 11 and the base unit 15 .
  • the base unit 15 , the housing part 11 and the spring means 31 are nested into one another.
  • the spring means 31 of the additional phase adjusting unit 29 is loaded.
  • the spring means 31 produces an adjusting force for an adjustment of the phase position in the second adjustment direction, which is opposed to the first adjustment direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Magnetically Actuated Valves (AREA)
  • Valve Device For Special Equipments (AREA)
US13/066,159 2008-10-11 2011-04-07 Phase adjustment device Abandoned US20110192366A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102008051386.5 2008-10-11
DE102008051386A DE102008051386A1 (de) 2008-10-11 2008-10-11 Phasenverstellvorrichtung
PCT/EP2009/006570 WO2010040440A1 (de) 2008-10-11 2009-09-10 Phasenverstellvorrichtung

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/006570 Continuation-In-Part WO2010040440A1 (de) 2008-10-11 2009-09-10 Phasenverstellvorrichtung

Publications (1)

Publication Number Publication Date
US20110192366A1 true US20110192366A1 (en) 2011-08-11

Family

ID=41395986

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/066,159 Abandoned US20110192366A1 (en) 2008-10-11 2011-04-07 Phase adjustment device

Country Status (6)

Country Link
US (1) US20110192366A1 (ja)
EP (1) EP2331796A1 (ja)
JP (1) JP5396625B2 (ja)
CN (1) CN102177318B (ja)
DE (1) DE102008051386A1 (ja)
WO (1) WO2010040440A1 (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104364476A (zh) * 2012-05-25 2015-02-18 舍弗勒技术有限两合公司 凸轮轴调节器的控制阀
US20150292367A1 (en) * 2012-11-29 2015-10-15 Schaeffler Technologies AG & Co. KG Camshaft adjusting device
US9587526B2 (en) * 2014-07-25 2017-03-07 Delphi Technologies, Inc. Camshaft phaser

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015200974A1 (de) * 2015-01-22 2016-01-21 Schaeffler Technologies AG & Co. KG Steuerventil mit tiefgezogenem Zentralgehäuse

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4895113A (en) * 1988-03-30 1990-01-23 Daimler-Benz Ag Device for relative angular adjustment between two drivingly connected shafts
US5119691A (en) * 1989-10-10 1992-06-09 General Motors Corporation Hydraulic phasers and valve means therefor
US5309873A (en) * 1991-11-28 1994-05-10 Atsugi Unisia Corporation Valve timing control system for internal combustion engine
US20030226532A1 (en) * 2002-04-19 2003-12-11 Nippon Soken, Inc. Valve timing adjusting device
US20040083998A1 (en) * 2002-11-04 2004-05-06 Borgwarner Inc. VCT phaser having an electromagnetic lock system for shift and lock operation
US20040226526A1 (en) * 2003-05-12 2004-11-18 Hydraulik-Ring Gmbh Camshaft adjuster for internal combustion engines of motor vehicles
US20060201462A1 (en) * 2002-10-17 2006-09-14 Ina-Schaeffler Kg Electrically driven camshaft adjuster
US20100126450A1 (en) * 2007-05-02 2010-05-27 Schaeffler Kg Camshaft adjuster for an internal combustion engine with improved design of the pressure chambers

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3930157A1 (de) * 1989-09-09 1991-03-21 Bosch Gmbh Robert Einrichtung zur verstellung der drehwinkelzuordnung einer nockenwelle zu ihrem antriebselement
DE19817319C2 (de) * 1998-04-18 2001-12-06 Daimler Chrysler Ag Nockenwellenversteller für Brennkraftmaschinen
US6722329B2 (en) * 2002-05-21 2004-04-20 Delphi Technologies, Inc. Locking pin mechanism for a camshaft phaser
EP1596040B1 (de) * 2004-05-14 2010-10-13 Schaeffler KG Nockenwellenversteller
DE102005048732A1 (de) * 2005-10-12 2007-04-19 Schaeffler Kg Hydraulisches Wegeventil
DE102006031517A1 (de) * 2006-07-07 2008-01-10 Schaeffler Kg Schalteinrichtung für eine druckölbetätigte Nockenwellenstellvorrichtung, sowie Montageverfahren zum Einbau derselben in eine Brennkraftmaschine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4895113A (en) * 1988-03-30 1990-01-23 Daimler-Benz Ag Device for relative angular adjustment between two drivingly connected shafts
US5119691A (en) * 1989-10-10 1992-06-09 General Motors Corporation Hydraulic phasers and valve means therefor
US5309873A (en) * 1991-11-28 1994-05-10 Atsugi Unisia Corporation Valve timing control system for internal combustion engine
US20030226532A1 (en) * 2002-04-19 2003-12-11 Nippon Soken, Inc. Valve timing adjusting device
US20060201462A1 (en) * 2002-10-17 2006-09-14 Ina-Schaeffler Kg Electrically driven camshaft adjuster
US20040083998A1 (en) * 2002-11-04 2004-05-06 Borgwarner Inc. VCT phaser having an electromagnetic lock system for shift and lock operation
US20040226526A1 (en) * 2003-05-12 2004-11-18 Hydraulik-Ring Gmbh Camshaft adjuster for internal combustion engines of motor vehicles
US20100126450A1 (en) * 2007-05-02 2010-05-27 Schaeffler Kg Camshaft adjuster for an internal combustion engine with improved design of the pressure chambers

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104364476A (zh) * 2012-05-25 2015-02-18 舍弗勒技术有限两合公司 凸轮轴调节器的控制阀
US20150129066A1 (en) * 2012-05-25 2015-05-14 Schaeffler Technologies Gmbh & Co. Kg Control valve for a camshaft adjuster
US9879793B2 (en) * 2012-05-25 2018-01-30 Schaeffler Technologies AG & Co. KG Control valve for a camshaft adjuster
US20150292367A1 (en) * 2012-11-29 2015-10-15 Schaeffler Technologies AG & Co. KG Camshaft adjusting device
US9598984B2 (en) * 2012-11-29 2017-03-21 Schaeffler Technologies AG & Co. KG Camshaft adjusting device
US9587526B2 (en) * 2014-07-25 2017-03-07 Delphi Technologies, Inc. Camshaft phaser

Also Published As

Publication number Publication date
CN102177318A (zh) 2011-09-07
JP2012505334A (ja) 2012-03-01
JP5396625B2 (ja) 2014-01-22
EP2331796A1 (de) 2011-06-15
WO2010040440A1 (de) 2010-04-15
CN102177318B (zh) 2013-09-11
DE102008051386A1 (de) 2010-04-15

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