US20120312396A1 - Proportional valve, in particular for a camshaft adjuster - Google Patents
Proportional valve, in particular for a camshaft adjuster Download PDFInfo
- Publication number
- US20120312396A1 US20120312396A1 US13/580,215 US201113580215A US2012312396A1 US 20120312396 A1 US20120312396 A1 US 20120312396A1 US 201113580215 A US201113580215 A US 201113580215A US 2012312396 A1 US2012312396 A1 US 2012312396A1
- Authority
- US
- United States
- Prior art keywords
- proportional valve
- check valve
- sleeve
- guide sleeve
- piston guide
- 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
Links
- 238000009434 installation Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 description 12
- 239000012530 fluid Substances 0.000 description 8
- 238000002485 combustion reaction Methods 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 230000004913 activation Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 239000010705 motor oil Substances 0.000 description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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
-
- 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
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/047—Camshafts
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7837—Direct response valves [i.e., check valve type]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49405—Valve or choke making
Definitions
- the invention relates to a proportional valve with a piston guide sleeve, a valve piston that can move in the piston guide sleeve, and also a check valve arranged in a pressure medium inlet to the proportional valve.
- the invention also relates to an installation method for such a proportional valve.
- Such a proportional valve is known from DE 10 2005 060 111 A1.
- This proportional valve is designed for a camshaft adjuster for an internal combustion engine and is integrated into a central screw for attaching the camshaft adjuster to a camshaft.
- the proportional valve has a check valve that has a spring disk-shaped construction and is arranged in an annular pressure medium inlet laterally next to the proportional valve on the outer periphery of the central screw.
- Another check valve is known from EP 1 291 563 A2.
- This check valve is designed for and integrated in a proportional valve constructed especially as a cartridge valve.
- this check valve is inserted in the area of a pressure medium inlet into a recess provided on the inner periphery of the piston guide sleeve before installation of the valve piston.
- the installation costs of such a check valve inserted into the piston guide sleeve are considerable.
- the stroke of this check valve constructed as a spring ring is not limited inwardly and the spring ring consequently can collide with the valve piston. Such a collision can lead to failure of the proportional valve.
- the invention is based on the objective of offering a proportional valve, in particular for a camshaft adjuster of an internal combustion engine, wherein the adaptation of the check valve to the proportional valve is improved compared with the prior art.
- the check valve is arranged in an annular gap surrounding the piston guide sleeve in the area of the pressure medium inlet.
- the check valve is integrated into the actual proportional valve so that the check valve does not have to be installed as a separate component during the installation of the proportional valve.
- the check valve is arranged outside of the piston guide sleeve it is guaranteed that the check valve cannot be moved in the radial direction against the valve piston.
- the proportional valve constructed in this way is preferably used for adjusting the camshaft of an internal combustion engine.
- the annular gap is limited by an insert-molded part at least partially surrounding the piston guide sleeve and a receptacle sleeve comprising at least a sub-region of the insert-molded part.
- the receptacle sleeve has, on its axial end, a receptacle gap that forms a partial region of the annular gap and in which the check valve is inserted.
- This construction allows an especially simple and reliable installation of the check valve, in that this check valve is inserted into the end-side receptacle gap without the use of tools and then the piston guide sleeve is inserted into the receptacle sleeve.
- This construction also reduces the processing costs for the components, in particular, the piston guide sleeve.
- the piston guide sleeve is not processed for forming the annular gap.
- the piston guide sleeve provided with the insert-molded part is connected to the receptacle sleeve with a material-fit connection.
- the check valve is inserted in a receptacle gap of the receptacle sleeve forming a partial region of the annular gap and then the piston guide sleeve provided with the insert-molded part is inserted into the receptacle sleeve and connected to this sleeve, for example, with a material-fit connection.
- a non-positive-fit or positive-fit connection could also be provided.
- the material-fit connection could be realized, for example, by ultrasonic welding or bonding.
- a non-positive connection is achieved, for example, by pressing the piston guide sleeve provided with the insert-molded part into the receptacle sleeve, while a positive-fit connection can be realized by a snap connection. All of these constructions have the advantage that they provide an extremely functional proportional valve for a camshaft adjuster.
- the check valve is constructed as a spring sleeve with slots in the axial direction, wherein it can be produced, in turn, advantageously from a metallic material, for example, sheet metal or stainless steel.
- the insert-molded part forms, on its outer lateral surface, a stop acting in the radial direction in the open position of the check valve and the receptacle sleeve forms, on its inner lateral surface, a stop acting in the radial direction in the closing direction of the check valve.
- the check valve contacts the inner lateral surface of the receptacle sleeve with no force or in a slightly pretensioned state. If pressure medium fluid, in particular, hydraulic fluid, flows from the outside in the radial direction into the adjustment space of the proportional valve, then the check valve is pressed by the pressure of the pressure medium fluid against the outer lateral surface of the insert-molded part and opens the inlet.
- FIG. 1 a perspective overall view of the entire proportional valve for the camshaft adjuster
- FIG. 2 a longitudinal section view through the proportional valve with the check valve in a closed position
- FIG. 3 a longitudinal section view through the proportional valve with the check valve in an open position
- FIG. 4 a cross sectional view through the proportional valve with the check valve in a closed position.
- the proportional valve 1 according to the invention is provided for a camshaft adjuster of an internal combustion engine.
- the camshaft driven by the camshaft adjuster is used in an internal combustion engine to open the gas exchange valves used for pushing out combusted gases and for taking in fresh gases against the force of valve springs installed on each gas exchange valve.
- Fixed control times for the gas exchange valves represent a compromise for the design with respect to the achievable medium pressure maximum or torque maximum and their positions in the usable rotational speed band, as well as the achievable output for the rated rotational speed.
- An optimal adaptation of the control times of the gas exchange valves can be achieved by a camshaft adjuster according to the respective operating state.
- the proportional valve 1 has, according to FIG. 1 , an electromagnetic control part 2 whose activation piston 6 interacts with a valve piston 3 ( FIGS. 2 , 3 , 4 ) in the proportional valve 1 .
- the activation piston 6 of the control part 2 moves the valve piston 3 in a piston guide sleeve 4 of the proportional valve 1 between two end positions and therefore causes a regulated adjustment of the control times on the camshaft adjuster.
- the proportional valve 1 also comprises the piston guide sleeve 4 (for a detailed representation, see FIGS. 2 to 4 ) that is provided in the area of a pressure medium inlet 10 and a working connection 11 b with an insert-molded part 5 made from, in particular, plastic.
- the valve piston 3 can be moved by the control part 2 by the activation piston 6 ( FIGS. 2 and 3 ) against the force of a valve spring 7 .
- the piston guide sleeve 4 provided with the insert-molded part 5 is inserted in a receptacle sleeve 8 and fixed to this sleeve by a snap connection 9 in an exact position on its end facing away from the control part 2 ( FIG. 2 , 3 ).
- the proportional valve 1 has four hydraulic fluid connections, namely a pressure medium inlet 10 connected to a pump, two working connections 11 a, 11 b and a return connection 11 c that is connected to a tank and leads through the interior of the hollow cylindrical valve piston 3 .
- the hydraulic fluid in particular, the motor oil of the internal combustion engine
- the proportional valve 1 is fed to the proportional valve 1 and fed through corresponding passages in the receptacle sleeve 8 , the insert-molded part 5 , and according to the position of the valve piston 3 via an annular space 12 defined by the control pistons 12 a and 12 b as part of the valve piston 3 to the working connections 11 a, 11 b.
- a connection to the return connection 11 c can be established via a connection opening 16 in the valve piston 3 .
- Ring filters 17 are provided on the pressure medium inlet 10 and also the working connections 11 a, 11 b. These are used to prevent the penetration of dirt into the proportional valve 1 .
- a defined adjustment of the camshaft relative to a drive wheel activated, for example, by a toothed belt or chain is achieved.
- This is achieved, for example, by one or more adjustment pistons of the camshaft adjuster 1 , wherein the piston or pistons is/are connected to the camshaft and rotated relative to the drive wheel by hydraulic fluid introduced through opposing adjustment piston spaces connecting to the working connections 11 a, 11 b.
- a check valve 13 is inserted into the hydraulic fluid inlet 10 , wherein this check valve contacts the receptacle sleeve 8 in a closed position ( FIG. 2 ) and contacts the insert-molded part 5 in an open position ( FIG. 3 ).
- the piston guide sleeve 4 , the insert-molded part 5 , and the receptacle sleeve 8 form an annular gap 14 ( FIG. 4 ) in which the check valve 13 is arranged.
- the receptacle sleeve 8 To reliably position the check valve 13 (reed valve) constructed as a spring sleeve with axial slots in the annular gap 14 , the receptacle sleeve 8 has a tab 15 that interacts with the insert-molded part 5 . This tab 15 has the effect that the check valve 13 cannot rotate within the annular gap 14 . This prevents incorrect functioning. Furthermore, through the construction according to the invention it is guaranteed that the check valve 13 cannot come into contact with the valve piston 3 in the open position.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
Description
- The invention relates to a proportional valve with a piston guide sleeve, a valve piston that can move in the piston guide sleeve, and also a check valve arranged in a pressure medium inlet to the proportional valve. The invention also relates to an installation method for such a proportional valve.
- Such a proportional valve is known from DE 10 2005 060 111 A1. This proportional valve is designed for a camshaft adjuster for an internal combustion engine and is integrated into a central screw for attaching the camshaft adjuster to a camshaft. Here, the proportional valve has a check valve that has a spring disk-shaped construction and is arranged in an annular pressure medium inlet laterally next to the proportional valve on the outer periphery of the central screw. During installation, care must be taken that this check valve arranged separate to the proportional valve is installed and there is also the risk of damage at least when screwing the central screw holding the proportional valve into the camshaft.
- Another check valve is known from
EP 1 291 563 A2. This check valve is designed for and integrated in a proportional valve constructed especially as a cartridge valve. Here, this check valve is inserted in the area of a pressure medium inlet into a recess provided on the inner periphery of the piston guide sleeve before installation of the valve piston. Here, the installation costs of such a check valve inserted into the piston guide sleeve are considerable. In addition, the stroke of this check valve constructed as a spring ring is not limited inwardly and the spring ring consequently can collide with the valve piston. Such a collision can lead to failure of the proportional valve. - The invention is based on the objective of offering a proportional valve, in particular for a camshaft adjuster of an internal combustion engine, wherein the adaptation of the check valve to the proportional valve is improved compared with the prior art.
- This objective is met in that the check valve is arranged in an annular gap surrounding the piston guide sleeve in the area of the pressure medium inlet. Through this construction, on one hand, the check valve is integrated into the actual proportional valve so that the check valve does not have to be installed as a separate component during the installation of the proportional valve. On the other hand, because the check valve is arranged outside of the piston guide sleeve it is guaranteed that the check valve cannot be moved in the radial direction against the valve piston. Incidentally, the proportional valve constructed in this way is preferably used for adjusting the camshaft of an internal combustion engine.
- In continuation of the invention, the annular gap is limited by an insert-molded part at least partially surrounding the piston guide sleeve and a receptacle sleeve comprising at least a sub-region of the insert-molded part. Several advantages are achieved with this construction. No additional installation expense is required for the installation of the camshaft adjuster, wherein the risks of installation errors due to an incorrectly installed, an additional check valve or even no check valve at all are minimized. Furthermore, no additionally processed installation space on the cylinder head of the internal combustion engine is necessary for a separate check valve and a hydraulically short distance to the actual camshaft adjuster and thus a stiffer hydraulic support is achieved.
- In continuation of the invention, the receptacle sleeve has, on its axial end, a receptacle gap that forms a partial region of the annular gap and in which the check valve is inserted. This construction allows an especially simple and reliable installation of the check valve, in that this check valve is inserted into the end-side receptacle gap without the use of tools and then the piston guide sleeve is inserted into the receptacle sleeve. This construction also reduces the processing costs for the components, in particular, the piston guide sleeve. In contrast to the prior art, in the construction according to the invention the piston guide sleeve is not processed for forming the annular gap.
- In another construction of the invention, the piston guide sleeve provided with the insert-molded part is connected to the receptacle sleeve with a material-fit connection. Here, according to an installation method according to the invention, the check valve is inserted in a receptacle gap of the receptacle sleeve forming a partial region of the annular gap and then the piston guide sleeve provided with the insert-molded part is inserted into the receptacle sleeve and connected to this sleeve, for example, with a material-fit connection. Alternatively, a non-positive-fit or positive-fit connection could also be provided. The material-fit connection could be realized, for example, by ultrasonic welding or bonding. A non-positive connection is achieved, for example, by pressing the piston guide sleeve provided with the insert-molded part into the receptacle sleeve, while a positive-fit connection can be realized by a snap connection. All of these constructions have the advantage that they provide an extremely functional proportional valve for a camshaft adjuster.
- In continuation of the invention, the check valve is constructed as a spring sleeve with slots in the axial direction, wherein it can be produced, in turn, advantageously from a metallic material, for example, sheet metal or stainless steel.
- In another construction, the insert-molded part forms, on its outer lateral surface, a stop acting in the radial direction in the open position of the check valve and the receptacle sleeve forms, on its inner lateral surface, a stop acting in the radial direction in the closing direction of the check valve. In the deactivated state, the check valve contacts the inner lateral surface of the receptacle sleeve with no force or in a slightly pretensioned state. If pressure medium fluid, in particular, hydraulic fluid, flows from the outside in the radial direction into the adjustment space of the proportional valve, then the check valve is pressed by the pressure of the pressure medium fluid against the outer lateral surface of the insert-molded part and opens the inlet. If there are pressure fluctuations against the flow, then the check valve closes against the radial pressure medium inlet of the receptacle sleeve. This construction offers the advantage that a reliable function is guaranteed. In each case it must be guaranteed that a collision of the check valve with the valve piston is excluded.
- Additional advantageous constructions of the invention can be taken from the description of the drawings in which an embodiment of the invention shown in the figures is described in more detail.
- Shown are:
-
FIG. 1 a perspective overall view of the entire proportional valve for the camshaft adjuster, -
FIG. 2 a longitudinal section view through the proportional valve with the check valve in a closed position, -
FIG. 3 a longitudinal section view through the proportional valve with the check valve in an open position, and -
FIG. 4 a cross sectional view through the proportional valve with the check valve in a closed position. - The
proportional valve 1 according to the invention is provided for a camshaft adjuster of an internal combustion engine. Here, the camshaft driven by the camshaft adjuster is used in an internal combustion engine to open the gas exchange valves used for pushing out combusted gases and for taking in fresh gases against the force of valve springs installed on each gas exchange valve. Fixed control times for the gas exchange valves represent a compromise for the design with respect to the achievable medium pressure maximum or torque maximum and their positions in the usable rotational speed band, as well as the achievable output for the rated rotational speed. An optimal adaptation of the control times of the gas exchange valves can be achieved by a camshaft adjuster according to the respective operating state. - The
proportional valve 1 has, according toFIG. 1 , an electromagnetic control part 2 whose activation piston 6 interacts with a valve piston 3 (FIGS. 2 , 3, 4) in theproportional valve 1. The activation piston 6 of the control part 2 moves the valve piston 3 in a piston guide sleeve 4 of theproportional valve 1 between two end positions and therefore causes a regulated adjustment of the control times on the camshaft adjuster. In addition to the control part 2, theproportional valve 1 also comprises the piston guide sleeve 4 (for a detailed representation, seeFIGS. 2 to 4 ) that is provided in the area of apressure medium inlet 10 and a workingconnection 11 b with an insert-moldedpart 5 made from, in particular, plastic. In the piston guide sleeve 4, the valve piston 3 can be moved by the control part 2 by the activation piston 6 (FIGS. 2 and 3 ) against the force of avalve spring 7. - The piston guide sleeve 4 provided with the insert-molded
part 5 is inserted in areceptacle sleeve 8 and fixed to this sleeve by a snap connection 9 in an exact position on its end facing away from the control part 2 (FIG. 2 , 3). Theproportional valve 1 has four hydraulic fluid connections, namely apressure medium inlet 10 connected to a pump, twoworking connections - Through the
pressure medium inlet 10, the hydraulic fluid, in particular, the motor oil of the internal combustion engine, is fed to theproportional valve 1 and fed through corresponding passages in thereceptacle sleeve 8, the insert-moldedpart 5, and according to the position of the valve piston 3 via anannular space 12 defined by thecontrol pistons 12 a and 12 b as part of the valve piston 3 to theworking connections - From the
working connection 11 a, a connection to the return connection 11 c can be established via a connection opening 16 in the valve piston 3.Ring filters 17 are provided on thepressure medium inlet 10 and also theworking connections proportional valve 1. - Through this
proportional valve 1 constructed according to the invention, a defined adjustment of the camshaft relative to a drive wheel activated, for example, by a toothed belt or chain is achieved. This is achieved, for example, by one or more adjustment pistons of thecamshaft adjuster 1, wherein the piston or pistons is/are connected to the camshaft and rotated relative to the drive wheel by hydraulic fluid introduced through opposing adjustment piston spaces connecting to theworking connections - To prevent a return flow of the motor oil in the
annular space 12 back into thehydraulic fluid inlet 10, which could happen due to the changing torque acting on the camshaft and thus on the adjustment pistons of the camshaft adjuster, acheck valve 13 is inserted into thehydraulic fluid inlet 10, wherein this check valve contacts thereceptacle sleeve 8 in a closed position (FIG. 2 ) and contacts the insert-moldedpart 5 in an open position (FIG. 3 ). Here, the piston guide sleeve 4, the insert-moldedpart 5, and thereceptacle sleeve 8 form an annular gap 14 (FIG. 4 ) in which thecheck valve 13 is arranged. To reliably position the check valve 13 (reed valve) constructed as a spring sleeve with axial slots in the annular gap 14, thereceptacle sleeve 8 has atab 15 that interacts with the insert-moldedpart 5. Thistab 15 has the effect that thecheck valve 13 cannot rotate within the annular gap 14. This prevents incorrect functioning. Furthermore, through the construction according to the invention it is guaranteed that thecheck valve 13 cannot come into contact with the valve piston 3 in the open position. -
- 1 Proportional valve
- 2 Control part
- 3 Valve piston
- 4 Piston guide sleeve
- 5 Insert-molded part
- 6 Actuation piston
- 7 Valve spring
- 8 Receptacle sleeve
- 9 Snap connection
- 10 Pressure medium inlet
- 11 a, 11 b Working connection
- 11 c Return connection
- 12 Annular space
- 12 a, 12 b Control piston
- 13 Check valve
- 14 Annular gap
- 15 Tab
- 16 Connection opening
- 17 Ring filter
Claims (11)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201010009401 DE102010009401A1 (en) | 2010-02-26 | 2010-02-26 | Proportional valve, in particular for a camshaft adjuster |
DE102010009401.3 | 2010-02-26 | ||
PCT/EP2011/050977 WO2011104058A1 (en) | 2010-02-26 | 2011-01-25 | Proportional valve, in particular for a camshaft adjuster |
Publications (1)
Publication Number | Publication Date |
---|---|
US20120312396A1 true US20120312396A1 (en) | 2012-12-13 |
Family
ID=43842702
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/580,215 Abandoned US20120312396A1 (en) | 2010-02-26 | 2011-01-25 | Proportional valve, in particular for a camshaft adjuster |
Country Status (7)
Country | Link |
---|---|
US (1) | US20120312396A1 (en) |
EP (1) | EP2539554B1 (en) |
KR (1) | KR20130008013A (en) |
CN (1) | CN102770627B (en) |
BR (1) | BR112012021449A2 (en) |
DE (1) | DE102010009401A1 (en) |
WO (1) | WO2011104058A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140048355A1 (en) * | 2012-08-14 | 2014-02-20 | Zf Friedrichshafen Ag | Device for providing the oil supply of a secondary circuit of a transmission of a hybrid driveline of a motor vehicle, comprising an auxiliary electrically driven oil pump |
US20190112793A1 (en) * | 2017-10-18 | 2019-04-18 | Chuan Wei Metal Co., Ltd. | Structural improvement of piston set for use in hydrant |
US10458559B2 (en) | 2016-10-06 | 2019-10-29 | Borgwarner, Inc. | Double flapper valve for a variable cam timing system |
US11111827B2 (en) | 2016-10-06 | 2021-09-07 | Borgwarner, Inc. | Double flapper valve for a variable cam timing system |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014216175A1 (en) | 2014-08-14 | 2016-02-18 | Schaeffler Technologies AG & Co. KG | Check valve for a control valve of a camshaft adjuster |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6029703A (en) * | 1998-12-18 | 2000-02-29 | Borg-Warner Automotive, Inc. | Pressure solenoid control valve with flux shunt |
US20040244852A1 (en) * | 2003-05-03 | 2004-12-09 | Hydraulik-Ring Gmbh | Bushing for a Hydraulic Valve |
US20050252561A1 (en) * | 2004-05-14 | 2005-11-17 | Andreas Strauss | Control valve for a device for changing the control times of an internal combust ion engine |
US20080245427A1 (en) * | 2007-04-05 | 2008-10-09 | Mac Valves, Inc. | Balanced solenoid valve |
US20090230337A1 (en) * | 2006-07-08 | 2009-09-17 | Schaeffler Kg | Hydraulic control valve |
US7600531B2 (en) * | 2005-03-18 | 2009-10-13 | Hydraulik-Ring Gmbh | Valve with check valve |
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---|---|---|---|---|
FR2396226A1 (en) * | 1977-06-27 | 1979-01-26 | Deere & Co | Control valve for pump - contains fluid channel sealed by open ring, to reduce size |
DE10143433B4 (en) | 2001-09-05 | 2013-09-26 | Hilite Germany Gmbh | proportional valve |
GB0303571D0 (en) * | 2003-02-17 | 2003-03-19 | Delphi Tech Inc | Oil flow control valve for a cam phaser |
DE102005041393A1 (en) * | 2005-09-01 | 2007-03-08 | Schaeffler Kg | Control valve for a device for changing the timing of an internal combustion engine |
DE102005047641A1 (en) * | 2005-10-05 | 2007-04-12 | Schaeffler Kg | Control valve for a camshaft adjuster |
DE102005060111A1 (en) * | 2005-12-16 | 2007-07-05 | Schaeffler Kg | Camshaft adjuster feed line |
DE102006022402A1 (en) * | 2006-05-13 | 2007-12-06 | Schaeffler Kg | Control valve for a camshaft adjuster |
GB0618648D0 (en) * | 2006-09-22 | 2006-11-01 | Delphi Tech Inc | Oil control valve |
-
2010
- 2010-02-26 DE DE201010009401 patent/DE102010009401A1/en not_active Withdrawn
-
2011
- 2011-01-25 KR KR20127022117A patent/KR20130008013A/en not_active Application Discontinuation
- 2011-01-25 US US13/580,215 patent/US20120312396A1/en not_active Abandoned
- 2011-01-25 BR BR112012021449A patent/BR112012021449A2/en not_active IP Right Cessation
- 2011-01-25 CN CN201180011295.7A patent/CN102770627B/en not_active Expired - Fee Related
- 2011-01-25 EP EP11701505.7A patent/EP2539554B1/en not_active Not-in-force
- 2011-01-25 WO PCT/EP2011/050977 patent/WO2011104058A1/en active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6029703A (en) * | 1998-12-18 | 2000-02-29 | Borg-Warner Automotive, Inc. | Pressure solenoid control valve with flux shunt |
US20040244852A1 (en) * | 2003-05-03 | 2004-12-09 | Hydraulik-Ring Gmbh | Bushing for a Hydraulic Valve |
US20050252561A1 (en) * | 2004-05-14 | 2005-11-17 | Andreas Strauss | Control valve for a device for changing the control times of an internal combust ion engine |
US7600531B2 (en) * | 2005-03-18 | 2009-10-13 | Hydraulik-Ring Gmbh | Valve with check valve |
US20090230337A1 (en) * | 2006-07-08 | 2009-09-17 | Schaeffler Kg | Hydraulic control valve |
US20080245427A1 (en) * | 2007-04-05 | 2008-10-09 | Mac Valves, Inc. | Balanced solenoid valve |
Cited By (6)
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US20140048355A1 (en) * | 2012-08-14 | 2014-02-20 | Zf Friedrichshafen Ag | Device for providing the oil supply of a secondary circuit of a transmission of a hybrid driveline of a motor vehicle, comprising an auxiliary electrically driven oil pump |
US9353850B2 (en) * | 2012-08-14 | 2016-05-31 | Zf Friedrichshafen Ag | Device for providing the oil supply of a secondary circuit of a transmission of a hybrid driveline of a motor vehicle, comprising an auxiliary electrically driven oil pump |
US10458559B2 (en) | 2016-10-06 | 2019-10-29 | Borgwarner, Inc. | Double flapper valve for a variable cam timing system |
US11111827B2 (en) | 2016-10-06 | 2021-09-07 | Borgwarner, Inc. | Double flapper valve for a variable cam timing system |
US20190112793A1 (en) * | 2017-10-18 | 2019-04-18 | Chuan Wei Metal Co., Ltd. | Structural improvement of piston set for use in hydrant |
US10633837B2 (en) * | 2017-10-18 | 2020-04-28 | Chuan Wei Metal Co., Ltd. | Structural improvement of piston set for use in hydrant |
Also Published As
Publication number | Publication date |
---|---|
DE102010009401A1 (en) | 2011-09-01 |
CN102770627B (en) | 2015-05-06 |
EP2539554B1 (en) | 2017-09-06 |
CN102770627A (en) | 2012-11-07 |
KR20130008013A (en) | 2013-01-21 |
WO2011104058A1 (en) | 2011-09-01 |
BR112012021449A2 (en) | 2016-05-31 |
EP2539554A1 (en) | 2013-01-02 |
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