EP2326804A1 - Camshaft adjuster - Google Patents
Camshaft adjusterInfo
- Publication number
- EP2326804A1 EP2326804A1 EP09780889A EP09780889A EP2326804A1 EP 2326804 A1 EP2326804 A1 EP 2326804A1 EP 09780889 A EP09780889 A EP 09780889A EP 09780889 A EP09780889 A EP 09780889A EP 2326804 A1 EP2326804 A1 EP 2326804A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- camshaft
- camshaft adjuster
- bearing
- adjuster
- hydraulic
- 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.)
- Granted
Links
- 238000005096 rolling process Methods 0.000 claims description 9
- 239000003921 oil Substances 0.000 description 16
- 239000010720 hydraulic oil Substances 0.000 description 10
- 238000002485 combustion reaction Methods 0.000 description 5
- RDYMFSUJUZBWLH-UHFFFAOYSA-N endosulfan Chemical compound C12COS(=O)OCC2C2(Cl)C(Cl)=C(Cl)C1(Cl)C2(Cl)Cl RDYMFSUJUZBWLH-UHFFFAOYSA-N 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 2
- 239000010705 motor oil Substances 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
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
- F01L1/02—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
-
- 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
- F01L2001/0476—Camshaft bearings
-
- 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
Definitions
- the invention relates to a camshaft adjuster of an internal combustion engine, in particular a hydraulic camshaft adjuster.
- a cylinder head for a valve-controlled internal combustion engine in which storage chairs are provided for the intake and exhaust camshaft.
- a bearing bush is provided in the bearing block in order to compensate for the assembly recesses required in the bearing block and to allow the hydraulic oil supply of the camshaft adjuster in the bearing point.
- the bushing has two axially juxtaposed openings for the Two-channel oil supply of the camshaft adjuster and a lubricant port for lubrication of the bearing point.
- DE 10 2004 053 572 B4 describes a hydraulic camshaft adjuster with a two-channel oil guide in the camshaft.
- two oil guide channels are formed, via which in each case an oil pressure chamber (depending on the desired adjustment direction) is supplied with hydraulic oil.
- the oil guide channels extend through the camshaft and via external lines to an oil pump and an oil control valve.
- DE 198 17 319 A1 describes a hydraulic camshaft adjuster in which a central spool is provided in order to supply the working chambers of the vane-type adjuster with hydraulic oil.
- the central control spool replaces the external valve and is integrated as a 4/2-way valve in the central mounting screw for the camshaft, which in the camshaft only a radial oil guide channel is required and the axial length of the camshaft adjuster is reduced.
- the object of the invention is to optimize a camshaft bearing point on the side of a hydraulic camshaft adjuster with regard to the occurring friction losses.
- the object is achieved by a camshaft adjuster with the features of claim 1.
- a rolling bearing is arranged in a hydraulic camshaft adjuster in a bearing for a camshaft.
- the rolling bearing is preferably a ball bearing.
- the bearing of the invention the camshaft applicable to a wellgelzellenversteller with central pressure medium supply via a spool.
- the space available for the arrangement of a rolling bearing can be used.
- the invention can also be applied to camshaft adjusters with axial oil guide channels.
- the delivery of the hydraulic oil into the adjuster takes place on the side facing away from the camshaft. Also in this case, no oil guide channel in the camshaft is necessary, which reduces the axial space and still allows a rolling bearing of the camshaft.
- Fig. 1 shows a preferred embodiment of a camshaft adjuster according to the invention in a longitudinal sectional view.
- Fig. 1 shows a camshaft adjuster 01.
- the camshaft adjuster is designed as diegelzellenversteller in a known manner and in the cylinder head an internal combustion engine arranged. It comprises an outer rotor 02, which is rotatably connected to a sprocket 03.
- the sprocket 03 is connected via a chain with a crankshaft and is driven during operation of the internal combustion engine of this (not shown).
- the camshaft adjuster 01 further comprises an inner rotor 04, which is rotatably connected to a camshaft 06.
- the attachment of the inner rotor 04 on the camshaft 06 is realized via a central screw 07.
- interlocking wings 08 are provided which form two pressure chambers 09 for the adjustment in the direction of "early” or “late” in ring sectors.
- For adjustment is pumped depending on the desired adjustment in one of the pressure chambers 09 hydraulic oil, whereby a rotation between the inner rotor 04 and outer rotor 02, and thus an adjustment of the phase position of the camshaft 06 relative to the sprocket 03 and thus against the crankshaft.
- a lock element (not shown) locks the phaser when the engine is stopped. During operation, this lock is hydraulically unlocked.
- a control slide 11 is arranged in the central screw 07 coaxially with its longitudinal axis.
- the spool 11 is axially displaceable by an actuator 12.
- the actuator 12 is preferably a solenoid, which moves an armature 13.
- the spool 11 forms with its annular channels 14 and radial bores 16 in the central screw 07 a multi-way valve, with which the flow of hydraulic oil to the one or the other pressure chamber 09 controlled and thus an adjustment is realized. With an axial displacement of the spool 11 so the oil pressure between the pressure chambers 09 is switched. The pressure chamber 09, which is not acted upon by oil pressure, is connected to the return line.
- channels 17 are provided which allow the hydraulic oil flow from a radial channel 18 of the camshaft 06 via an axial passage 19 to the pressure chambers 09 via the spool 11.
- a rolling bearing 22 is preferably arranged according to the invention adjacent to the radial channel 18 in the camshaft bearing point 23 of the cylinder head.
- the hydraulic oil supply can take place via an axial passage in the camshaft 06.
- the hydraulic oil supply can take place via an axial passage in the camshaft 06.
- the adjuster bearing according to the invention of the camshaft in a rolling bearing can also be applied to other camshaft adjuster, if the axial space is available.
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)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008039038.0A DE102008039038B4 (en) | 2008-08-21 | 2008-08-21 | Camshaft adjuster |
PCT/EP2009/059371 WO2010020507A1 (en) | 2008-08-21 | 2009-07-21 | Camshaft adjuster |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2326804A1 true EP2326804A1 (en) | 2011-06-01 |
EP2326804B1 EP2326804B1 (en) | 2012-05-16 |
Family
ID=41055314
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09780889A Active EP2326804B1 (en) | 2008-08-21 | 2009-07-21 | Camshaft adjuster |
Country Status (6)
Country | Link |
---|---|
US (1) | US8967104B2 (en) |
EP (1) | EP2326804B1 (en) |
KR (1) | KR101573102B1 (en) |
CN (1) | CN102132015B (en) |
DE (1) | DE102008039038B4 (en) |
WO (1) | WO2010020507A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9689284B2 (en) | 2013-04-24 | 2017-06-27 | Schaeffler Technologies AG & Co. KG | Camshaft adjusting device |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010005603B4 (en) * | 2010-01-25 | 2021-05-20 | Schaeffler Technologies AG & Co. KG | Camshaft adjustment arrangement with a camshaft bearing designed as a roller bearing |
DE102010012479A1 (en) * | 2010-03-24 | 2011-09-29 | Schaeffler Technologies Gmbh & Co. Kg | Control valve of a device for changing the relative angular position of a camshaft relative to a crankshaft of an internal combustion engine |
DE102011081484A1 (en) * | 2011-08-24 | 2013-02-28 | Mahle International Gmbh | bearing block |
DE102012201573A1 (en) * | 2012-02-02 | 2013-08-08 | Schaeffler Technologies AG & Co. KG | Phaser |
DE102012210016A1 (en) * | 2012-06-14 | 2013-12-19 | Schaeffler Technologies AG & Co. KG | Phaser arrangement |
GB2504100A (en) * | 2012-07-17 | 2014-01-22 | Mechadyne Internat Ltd | A concentric camshaft supported by roller bearings |
DE102012214963A1 (en) | 2012-08-23 | 2014-02-27 | Schaeffler Technologies AG & Co. KG | Radial camshaft pressure medium transmission |
DE102012214960A1 (en) * | 2012-08-23 | 2014-02-27 | Schaeffler Technologies AG & Co. KG | Rolling bearings with radial pressure medium transmission |
DE102012221876B4 (en) * | 2012-11-29 | 2021-01-07 | Schaeffler Technologies AG & Co. KG | Camshaft adjustment device |
DE102013016907A1 (en) | 2013-06-28 | 2014-12-31 | Daimler Ag | Camshaft adjuster for an internal combustion engine |
DE102013212935B4 (en) | 2013-07-03 | 2024-02-08 | Schaeffler Technologies AG & Co. KG | Actuator camshaft adjuster system for a dry belt drive |
DE102013216184B4 (en) * | 2013-08-14 | 2020-11-26 | Schaeffler Technologies AG & Co. KG | Camshaft adjuster |
KR101518897B1 (en) | 2013-09-06 | 2015-05-11 | 현대자동차 주식회사 | Engine having continuous varialbe valve timing device |
DE102013020770A1 (en) | 2013-12-11 | 2015-06-11 | Daimler Ag | Cylinder head device for an internal combustion engine |
DE102018101972A1 (en) * | 2017-03-21 | 2018-09-27 | ECO Holding 1 GmbH | Camshaft adjuster for a camshaft device and camshaft device |
DE102017209671A1 (en) * | 2017-06-08 | 2018-12-13 | Aktiebolaget Skf | Rolling bearing assembly, in particular for a camshaft |
DE102017122425A1 (en) * | 2017-09-27 | 2019-03-28 | ECO Holding 1 GmbH | Kit with a camshaft adjuster |
DE102020121608A1 (en) | 2020-08-18 | 2022-02-24 | Schaeffler Technologies AG & Co. KG | Camshaft phasing unit and method of operating the camshaft phasing unit |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3063306A (en) * | 1960-03-16 | 1962-11-13 | Westinghouse Air Brake Co | Adjustable cam device |
JPS58162708A (en) * | 1982-03-24 | 1983-09-27 | Toyota Motor Corp | Valve timing control device for internal-combustion engine |
IT1152959B (en) * | 1982-05-17 | 1987-01-14 | Alfa Romeo Spa | DEVICE FOR AUTOMATIC VARIATION OF THE TIMING OF A CAMSHAFT |
US5088456A (en) * | 1990-01-30 | 1992-02-18 | Atsugi-Unisia Corporation | Valve timing control system to adjust phase relationship between maximum, intermediate, and minimum advance position |
US5934234A (en) * | 1996-10-24 | 1999-08-10 | Honda Giken Kogyo Kabushiki Kaisha | Assembly structure of a shaft having a fixed sprocket |
DE19752381A1 (en) | 1997-11-26 | 1999-05-27 | Volkswagen Ag | Motor cylinder head |
JP4070857B2 (en) * | 1997-12-17 | 2008-04-02 | トヨタ自動車株式会社 | Valve characteristic control device for internal combustion engine |
DE19817319C2 (en) | 1998-04-18 | 2001-12-06 | Daimler Chrysler Ag | Camshaft adjuster for internal combustion engines |
DE10002512A1 (en) | 2000-01-21 | 2001-07-26 | Porsche Ag | Cylinder head for a valve-controlled internal combustion engine |
DE10038354C2 (en) * | 2000-08-05 | 2003-03-20 | Atlas Fahrzeugtechnik Gmbh | Control device for adjusting the angle of rotation of a camshaft |
DE10108055C1 (en) * | 2001-02-20 | 2002-08-08 | Siemens Ag | Method for controlling an internal combustion engine |
DE10134320A1 (en) * | 2001-07-14 | 2003-01-23 | Ina Schaeffler Kg | Device for changing the control times of gas shuttle valves in internal combustion engines comprises a driven unit axially, radially and peripherally locked on a sleeve and screwed in a deformation-free manner on a camshaft |
JP2005155541A (en) | 2003-11-27 | 2005-06-16 | Mitsubishi Electric Corp | Valve timing adjusting device and its assembling device |
JP2006170117A (en) * | 2004-12-17 | 2006-06-29 | Yamaha Motor Co Ltd | Valve timing control device, engine device and vehicle having this control device |
DE102006036851A1 (en) * | 2005-08-05 | 2007-06-28 | Neumayer Tekfor Holding Gmbh | Cam shaft for internal combustion engine, has base bodies separately manufactured and axially engaged on shaft through sliding, and fixation formed by using ball bearing and provided on bodies |
DE112006002732A5 (en) * | 2005-08-05 | 2008-07-24 | Neumayer Tekfor Holding Gmbh | Shaft with functional bodies, such as camshaft for internal combustion engines, method for producing such waves, and thus equipped internal combustion engines |
DE102005059841A1 (en) | 2005-12-15 | 2007-07-05 | Schaeffler Kg | Phaser |
DE102005060111A1 (en) * | 2005-12-16 | 2007-07-05 | Schaeffler Kg | Camshaft adjuster feed line |
-
2008
- 2008-08-21 DE DE102008039038.0A patent/DE102008039038B4/en not_active Revoked
-
2009
- 2009-07-21 WO PCT/EP2009/059371 patent/WO2010020507A1/en active Application Filing
- 2009-07-21 US US13/059,696 patent/US8967104B2/en active Active
- 2009-07-21 CN CN2009801326072A patent/CN102132015B/en active Active
- 2009-07-21 EP EP09780889A patent/EP2326804B1/en active Active
- 2009-07-21 KR KR1020117003742A patent/KR101573102B1/en active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO2010020507A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9689284B2 (en) | 2013-04-24 | 2017-06-27 | Schaeffler Technologies AG & Co. KG | Camshaft adjusting device |
Also Published As
Publication number | Publication date |
---|---|
DE102008039038B4 (en) | 2021-01-28 |
US20110139101A1 (en) | 2011-06-16 |
WO2010020507A1 (en) | 2010-02-25 |
CN102132015B (en) | 2013-10-30 |
DE102008039038A1 (en) | 2010-02-25 |
CN102132015A (en) | 2011-07-20 |
KR101573102B1 (en) | 2015-11-30 |
KR20110059594A (en) | 2011-06-02 |
EP2326804B1 (en) | 2012-05-16 |
US8967104B2 (en) | 2015-03-03 |
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