GB1529793A - Internal combustion engine with hydraulic inlet valve actuation - Google Patents

Internal combustion engine with hydraulic inlet valve actuation

Info

Publication number
GB1529793A
GB1529793A GB38135/74A GB3813574A GB1529793A GB 1529793 A GB1529793 A GB 1529793A GB 38135/74 A GB38135/74 A GB 38135/74A GB 3813574 A GB3813574 A GB 3813574A GB 1529793 A GB1529793 A GB 1529793A
Authority
GB
United Kingdom
Prior art keywords
displacement
piston
inlet valve
cam
tappet
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
Application number
GB38135/74A
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.)
Rover Co Ltd
Original Assignee
Rover Co Ltd
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 Rover Co Ltd filed Critical Rover Co Ltd
Priority to GB38135/74A priority Critical patent/GB1529793A/en
Publication of GB1529793A publication Critical patent/GB1529793A/en
Expired 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
    • F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/10—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic
    • F01L9/11—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic in which the action of a cam is being transmitted to a valve by a liquid column
    • F01L9/12—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic in which the action of a cam is being transmitted to a valve by a liquid column with a liquid chamber between a piston actuated by a cam and a piston acting on a valve stem
    • F01L9/14—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic in which the action of a cam is being transmitted to a valve by a liquid column with a liquid chamber between a piston actuated by a cam and a piston acting on a valve stem the volume of the chamber being variable, e.g. for varying the lift or the timing of a 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
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/08—Shape of cams

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

1529793 Hydraulic valve gear BRITISH LEYLAND UK Ltd 6 Oct 1975 [31 Aug 1974] 38135/74 Heading F1B [Also in Division F2] A tappet 20 operated by a cam 18 is hydraulically coupled to an inlet valve tappet 22 by engine oil in ducts 21, 23 and displacement of the tappet 22 is controlled by a piston 25. The displacement of the piston 25 is limited by a rod 28 positioned by a cam 31 to provide variable displacement. The cam 31 may be angularly positioned in accordance with engine speed or load, e.g. in dependence on the position of a carburetter throttle valve to provide zero piston displacement at wide open throttle and maximum piston displacement at minimum throttle opening.
GB38135/74A 1975-10-06 1975-10-06 Internal combustion engine with hydraulic inlet valve actuation Expired GB1529793A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB38135/74A GB1529793A (en) 1975-10-06 1975-10-06 Internal combustion engine with hydraulic inlet valve actuation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB38135/74A GB1529793A (en) 1975-10-06 1975-10-06 Internal combustion engine with hydraulic inlet valve actuation

Publications (1)

Publication Number Publication Date
GB1529793A true GB1529793A (en) 1978-10-25

Family

ID=10401430

Family Applications (1)

Application Number Title Priority Date Filing Date
GB38135/74A Expired GB1529793A (en) 1975-10-06 1975-10-06 Internal combustion engine with hydraulic inlet valve actuation

Country Status (1)

Country Link
GB (1) GB1529793A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4502425A (en) * 1981-01-20 1985-03-05 Marlene A. Wride Variable lift cam follower
GB2171454A (en) * 1985-02-26 1986-08-28 South Western Ind Res An adjustable valve actuator for an engine
GB2234291A (en) * 1989-07-26 1991-01-30 Fuji Heavy Ind Ltd I.c.engine valve timing control
DE4235620A1 (en) * 1992-10-22 1994-04-28 Hydraulik Ring Gmbh Valve lift adjusting device for IC engines and compressors - has adjusting element controlled by pressure medium, and connected to valve lifter
WO1995033919A1 (en) * 1994-06-02 1995-12-14 Christos Valasopoylos Piston internal combustion engine variable action valve lifter system
BE1008574A3 (en) * 1994-08-10 1996-06-04 Bulens William Hydraulic valve tappet for controlling the opening of a motor vehicle valve
CN102278161A (en) * 2011-07-19 2011-12-14 天津大学 Cushioning hydraulic cylinder for variable valve

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4502425A (en) * 1981-01-20 1985-03-05 Marlene A. Wride Variable lift cam follower
GB2171454A (en) * 1985-02-26 1986-08-28 South Western Ind Res An adjustable valve actuator for an engine
GB2234291A (en) * 1989-07-26 1991-01-30 Fuji Heavy Ind Ltd I.c.engine valve timing control
DE4023398A1 (en) * 1989-07-26 1991-02-07 Fuji Heavy Ind Ltd VALVE ADJUSTMENT CONTROL FOR AN INTERNAL COMBUSTION ENGINE
DE4235620A1 (en) * 1992-10-22 1994-04-28 Hydraulik Ring Gmbh Valve lift adjusting device for IC engines and compressors - has adjusting element controlled by pressure medium, and connected to valve lifter
DE4235620C2 (en) * 1992-10-22 1999-09-23 Hydraulik Ring Gmbh Valve stroke adjustment device for internal combustion engines and compressors
WO1995033919A1 (en) * 1994-06-02 1995-12-14 Christos Valasopoylos Piston internal combustion engine variable action valve lifter system
US5931125A (en) * 1994-06-02 1999-08-03 Valasopoulos; Christos Piston internal combustion engine variable action valve lifter system
BE1008574A3 (en) * 1994-08-10 1996-06-04 Bulens William Hydraulic valve tappet for controlling the opening of a motor vehicle valve
CN102278161A (en) * 2011-07-19 2011-12-14 天津大学 Cushioning hydraulic cylinder for variable valve
CN102278161B (en) * 2011-07-19 2013-07-24 天津大学 Cushioning hydraulic cylinder for variable valve

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee