GB1529793A - Internal combustion engine with hydraulic inlet valve actuation - Google Patents
Internal combustion engine with hydraulic inlet valve actuationInfo
- 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
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.
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)
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 |
-
1975
- 1975-10-06 GB GB38135/74A patent/GB1529793A/en not_active Expired
Cited By (11)
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 |