DE50211849D1 - VALVE TRANSMISSION FOR AN INTERNAL COMBUSTION ENGINE - Google Patents

VALVE TRANSMISSION FOR AN INTERNAL COMBUSTION ENGINE

Info

Publication number
DE50211849D1
DE50211849D1 DE50211849T DE50211849T DE50211849D1 DE 50211849 D1 DE50211849 D1 DE 50211849D1 DE 50211849 T DE50211849 T DE 50211849T DE 50211849 T DE50211849 T DE 50211849T DE 50211849 D1 DE50211849 D1 DE 50211849D1
Authority
DE
Germany
Prior art keywords
inlet
outlet
valve
valves
lift
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.)
Expired - Lifetime
Application number
DE50211849T
Other languages
German (de)
Inventor
Armin Josenhans
Dietmar Schwarzenthal
Leo Spiegel
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.)
Dr Ing HCF Porsche AG
Original Assignee
Dr Ing HCF Porsche AG
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
Priority claimed from DE10212327A external-priority patent/DE10212327A1/en
Application filed by Dr Ing HCF Porsche AG filed Critical Dr Ing HCF Porsche AG
Application granted granted Critical
Publication of DE50211849D1 publication Critical patent/DE50211849D1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • F01L13/0036—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
    • 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
    • F01L1/053—Camshafts overhead type
    • F01L1/0532—Camshafts overhead type the cams being directly in contact with the driven valve
    • 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
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/14—Tappets; Push rods
    • F01L1/143—Tappets; Push rods for use with overhead 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
    • F01L1/26—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per cylinder
    • F01L1/267—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per cylinder with means for varying the timing or the lift of the 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
    • 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
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • 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
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0005—Deactivating 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
    • F01L2307/00—Preventing the rotation of tappets

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

The invention relates to a valve mechanism for an internal combustion engine, comprising at least two inlet and/or outlet valves (EV1, EV2, AV1, AV2) per cylinder which can be activated by the inlet and/or outlet camshaft (8); in addition to lift transmission elements (4) which are arranged between the camshafts (6,7) of the inlet and/or outlet camshaft, and means for altering the valve lift of the inlet and/or outlet valves. At least two inlet valves and/or two outlet valves per cylinder cooperate with at least two partial cams (24, 25, 26) having two different lift curves, and the lift transmission elements (4) of the gas exchange valves are provided with at least two lift elements (22, 23) which respectively cooperate with the partial cams (24, 25, 26) and with the hydraulic supply lines for switching purposes. According to the invention, the supply lines (34, 44) for switching a first inlet or outlet valve (EV1, AV2) are separate from the supply lines (40, 48) for switching a second inlet or outlet valve (EV2, AV2), whereby a first inlet or outlet valve (EV1, AV1) can be switched independently from the second inlet or outlet valve (EV2, AV2). As a result two-step valve switching can be achieved in a simple manner.
DE50211849T 2001-09-11 2002-08-22 VALVE TRANSMISSION FOR AN INTERNAL COMBUSTION ENGINE Expired - Lifetime DE50211849D1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10144712 2001-09-11
DE10212327A DE10212327A1 (en) 2001-09-11 2002-03-20 Induction and exhaust valve mechanism has switching supply lines for first valve separate from those for second valve
PCT/EP2002/009379 WO2003023197A1 (en) 2001-09-11 2002-08-22 Valve mechanism for an internal combustion engine

Publications (1)

Publication Number Publication Date
DE50211849D1 true DE50211849D1 (en) 2008-04-17

Family

ID=26010112

Family Applications (1)

Application Number Title Priority Date Filing Date
DE50211849T Expired - Lifetime DE50211849D1 (en) 2001-09-11 2002-08-22 VALVE TRANSMISSION FOR AN INTERNAL COMBUSTION ENGINE

Country Status (5)

Country Link
EP (1) EP1427918B1 (en)
JP (1) JP2005502808A (en)
AT (1) ATE388306T1 (en)
DE (1) DE50211849D1 (en)
WO (1) WO2003023197A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4297189B2 (en) * 2005-09-27 2009-07-15 トヨタ自動車株式会社 Variable valve operating apparatus and valve opening adjustment method
WO2014165384A1 (en) * 2013-04-02 2014-10-09 Eaton Corporation Oil control valve system for valve actuation switching
KR101684559B1 (en) 2015-12-11 2016-12-08 현대자동차 주식회사 Engine provided with continuous varible vavle timing apparatus and continuous varible vavle duration apparatus
GB2552500B (en) 2016-07-26 2019-11-06 Jaguar Land Rover Ltd Controlling intake valves in an internal combustion engine

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1308977C (en) 1986-08-27 1992-10-20 Tsuneo Konno Valve operating device for internal combustion engine
US5431133A (en) * 1994-05-31 1995-07-11 General Motors Corporation Low mass two-step valve lifter
DE19528505A1 (en) 1995-08-03 1997-02-06 Schaeffler Waelzlager Kg Device for selectively actuating at least one gas exchange valve
DE19601587A1 (en) 1996-01-18 1997-07-24 Schaeffler Waelzlager Kg Tappet for a valve train of an internal combustion engine
DE19602013C2 (en) * 1996-01-20 2003-10-30 Ina Schaeffler Kg Cylinder head of an internal combustion engine with a valve train that can be switched to different valve strokes
DE19606054C2 (en) 1996-02-19 1998-07-30 Porsche Ag Valve train of an internal combustion engine
DE19630192C2 (en) 1996-07-26 1998-05-28 Porsche Ag Cylinder head arrangement of an internal combustion engine
DE19834843A1 (en) 1998-08-01 2000-02-03 Porsche Ag Device for changing the relative rotational position of a shaft to the drive wheel

Also Published As

Publication number Publication date
ATE388306T1 (en) 2008-03-15
WO2003023197A1 (en) 2003-03-20
EP1427918A1 (en) 2004-06-16
JP2005502808A (en) 2005-01-27
EP1427918B1 (en) 2008-03-05

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Legal Events

Date Code Title Description
8327 Change in the person/name/address of the patent owner

Owner name: DR. ING. H.C. F. PORSCHE AKTIENGESELLSCHAFT, 7, DE

8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: DR. ING. H.C. F. PORSCHE AKTIENGESELLSCHAFT, 7, DE