EP2877715A1 - Adjustable camshaft - Google Patents
Adjustable camshaftInfo
- Publication number
- EP2877715A1 EP2877715A1 EP13739693.3A EP13739693A EP2877715A1 EP 2877715 A1 EP2877715 A1 EP 2877715A1 EP 13739693 A EP13739693 A EP 13739693A EP 2877715 A1 EP2877715 A1 EP 2877715A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cam
- outer shaft
- oil
- camshaft
- adjustable
- 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
- 238000007789 sealing Methods 0.000 claims abstract description 37
- 238000002485 combustion reaction Methods 0.000 claims abstract description 7
- 238000009434 installation Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 229920001971 elastomer Polymers 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 229920006324 polyoxymethylene Polymers 0.000 claims description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 229910000510 noble metal Inorganic materials 0.000 claims 1
- 239000002184 metal Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 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 2
- 238000005461 lubrication Methods 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000243 solution 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
- 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
- F01L2001/0475—Hollow 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
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/047—Camshafts
- F01L2001/0476—Camshaft bearings
-
- 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
- Y10T74/00—Machine element or mechanism
- Y10T74/21—Elements
- Y10T74/2101—Cams
- Y10T74/2102—Adjustable
Definitions
- the sealing element may be formed integrally with the cam, for example, formed from an inwardly formed projection or portion of the cam bore, or the sealing element is formed by a metal ring which is inserted inside the cam bore, for example formed by a brass ring.
- the camshaft according to the invention may be disposed between the inner shaft and the outer shaft at least one sealing ring, wherein the arrangement of a first sealing ring is provided by the arrangement of the cam adjustment side of the camshaft bearing, which is formed with at least one ⁇ lzu Siliconbohrung.
- the sealing ring can be designed so that oil in the gap between the inner shaft and the outer shaft can not pass the sealing ring in the axial direction.
- a particularly advantageous arrangement of the sealing ring results when this side facing away from the arrangement of the cam adjusting device side of the cam journal bearing is provided, which is formed with at least one ⁇ lzu Siliconbohrung.
- distributed over the length of the cam can be generated a plurality of fluidly separate supply segments for supplying oil from the gap between the inner shaft and the outer shaft, wherein the Nockenverstell responded facing segment at the same time mitver care of the cam.
- the camshaft 1 has an outer shaft 10 on which two first cams 11 are arranged in the section shown, wherein the first cams 11 are rotationally connected to the outer shaft 10, for example by being pressed onto the outer shaft or welded to the outer shaft.
- an inner shaft 12 extends, and it is a second cam 13 is shown, which is rotationally connected to the inner shaft 12 via a pin 21.
- the second cam 13 has a cam bore 24 through which the outer shaft 10 extends, so that the second cam 13 is rotatably supported on the outer shaft 10. Twists the inner shaft 12 relative to the outer shaft 10 by the Nockenverstell Rhein 17 is activated, so shifts the phase position of the second cam 13 relative to the phase position of the first cam 11.
- two oil supply bores 20 which are opposite one another and are shown in section are shown, and a plurality of oil supply bores 20 distributed over the circumference can be provided, which fluidly communicate with one another through an annular gap 25.
- the oil introduced into the gap 14 can flow in the direction of the cam adjusting device 17, so that the oil passes through the region of the second cam 13 without appreciable pressure loss and at the same time supplies it with oil for lubrication.
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 |
---|---|---|---|
DE102012106856.9A DE102012106856B4 (en) | 2012-07-27 | 2012-07-27 | Adjustable camshaft |
PCT/EP2013/065299 WO2014016215A1 (en) | 2012-07-27 | 2013-07-19 | Adjustable camshaft |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2877715A1 true EP2877715A1 (en) | 2015-06-03 |
EP2877715B1 EP2877715B1 (en) | 2016-11-30 |
Family
ID=48832912
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13739693.3A Active EP2877715B1 (en) | 2012-07-27 | 2013-07-19 | Adjustable camshaft |
Country Status (4)
Country | Link |
---|---|
US (1) | US9617876B2 (en) |
EP (1) | EP2877715B1 (en) |
DE (1) | DE102012106856B4 (en) |
WO (1) | WO2014016215A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013007741A1 (en) * | 2013-05-07 | 2014-11-13 | Thyssenkrupp Presta Teccenter Ag | camshaft |
DE102015113356A1 (en) | 2015-08-13 | 2017-02-16 | Thyssenkrupp Ag | Adjustable camshaft with a phase plate |
DE102015117920B4 (en) * | 2015-10-21 | 2023-01-19 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Camshaft arrangement in an internal combustion engine |
DE102020207134A1 (en) | 2020-06-08 | 2021-12-09 | Mahle International Gmbh | Adjustable camshaft |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2151834A (en) * | 1936-04-18 | 1939-03-28 | Bugatti Ettore | Distribution control mechanism |
DE3800913A1 (en) * | 1988-01-14 | 1989-08-03 | Emitec Emissionstechnologie | MULTI-LAYER DRIVE SHAFT |
DE4201473C2 (en) * | 1991-02-01 | 1994-06-30 | Volkswagen Ag | Control device for charge exchange valves of an internal combustion engine with at least one deactivatable cam on a camshaft |
DE19802484C2 (en) * | 1998-01-23 | 2000-06-08 | Daimler Chrysler Ag | Method and device for producing assembled camshafts |
DE10020119A1 (en) * | 2000-04-22 | 2001-10-25 | Schaeffler Waelzlager Ohg | Device for independent hydraulic adjustment of camshaft phase and axial positions has phase adjuster in form of rotation piston adjuster that also forms adjustment piston for camshaft |
US6691656B1 (en) | 2002-11-27 | 2004-02-17 | Delphi Technologies, Inc. | Cam phaser hydraulic seal assembly |
DE202005021715U1 (en) | 2005-02-03 | 2009-07-02 | Mahle International Gmbh | Camshaft with mutually rotatable cam for motor vehicles in particular |
DE102005062207A1 (en) | 2005-12-24 | 2007-06-28 | Mahle International Gmbh | Camshaft especially for motor vehicle engines has coaxial inner and outer camshafts with inner shaft being secured on inner surface of outer shaft |
EP2171222B1 (en) | 2007-07-02 | 2017-11-29 | BorgWarner Inc. | Concentric cam with check valves in the spool for a phaser |
EP2048385A1 (en) | 2007-10-11 | 2009-04-15 | Carl Freudenberg KG | Bearing assembly |
JP4747159B2 (en) | 2007-12-11 | 2011-08-17 | 本田技研工業株式会社 | Valve operating apparatus provided with phase control means |
DE102009049217A1 (en) | 2009-10-13 | 2011-04-28 | Mahle International Gmbh | Internal combustion engine with at least one camshaft |
DE102009047009A1 (en) | 2009-11-23 | 2011-05-26 | Robert Bosch Gmbh | Seal assembly and valve with seal assembly |
JP2011117414A (en) | 2009-12-07 | 2011-06-16 | Mitsubishi Motors Corp | Variable valve gear of internal combustion engine |
JP5527524B2 (en) | 2010-02-12 | 2014-06-18 | 三菱自動車工業株式会社 | Engine with variable valve system |
DE102010019130B4 (en) * | 2010-04-30 | 2021-02-04 | Mahle International Gmbh | Cylinder head |
DE102012203145A1 (en) * | 2012-02-29 | 2013-08-29 | Mahle International Gmbh | Adjustable camshaft |
-
2012
- 2012-07-27 DE DE102012106856.9A patent/DE102012106856B4/en active Active
-
2013
- 2013-07-19 US US14/417,737 patent/US9617876B2/en not_active Expired - Fee Related
- 2013-07-19 WO PCT/EP2013/065299 patent/WO2014016215A1/en active Application Filing
- 2013-07-19 EP EP13739693.3A patent/EP2877715B1/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2014016215A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102012106856B4 (en) | 2019-05-29 |
EP2877715B1 (en) | 2016-11-30 |
US9617876B2 (en) | 2017-04-11 |
DE102012106856A1 (en) | 2014-01-30 |
US20150152750A1 (en) | 2015-06-04 |
WO2014016215A1 (en) | 2014-01-30 |
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