GB2017861A - Means for selectively transmitting drive - Google Patents

Means for selectively transmitting drive

Info

Publication number
GB2017861A
GB2017861A GB7911599A GB7911599A GB2017861A GB 2017861 A GB2017861 A GB 2017861A GB 7911599 A GB7911599 A GB 7911599A GB 7911599 A GB7911599 A GB 7911599A GB 2017861 A GB2017861 A GB 2017861A
Authority
GB
United Kingdom
Prior art keywords
seat
control element
liquid
pressure
push rod
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
Application number
GB7911599A
Other versions
GB2017861B (en
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB7911599A priority Critical patent/GB2017861B/en
Publication of GB2017861A publication Critical patent/GB2017861A/en
Application granted granted Critical
Publication of GB2017861B publication Critical patent/GB2017861B/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
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/20—Adjusting or compensating clearance
    • F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
    • F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
    • F01L1/245—Hydraulic tappets
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)

Abstract

Drive is transmitted from a cam (1) to a push rod (2) via a body of liquid trapped between two pistons (5, 6). A control element (7) is normally urged against a seat (11) by pressure in the body of liquid but can be lifted off its seat by the application of pressure to liquid in a control chamber (15) via a solenoid operated valve which can establish selective communication between a pressure source e.g. pump and a sump. When the control element moves clear of its seat, liquid trapped between the pistons acts on a seat-engaging face of the control element and displaces the control element instead of driving the push rod. <IMAGE>
GB7911599A 1978-04-04 1979-04-03 Means for selectively transmitting drive Expired GB2017861B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7911599A GB2017861B (en) 1978-04-04 1979-04-03 Means for selectively transmitting drive

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1310378 1978-04-04
GB7911599A GB2017861B (en) 1978-04-04 1979-04-03 Means for selectively transmitting drive

Publications (2)

Publication Number Publication Date
GB2017861A true GB2017861A (en) 1979-10-10
GB2017861B GB2017861B (en) 1982-07-14

Family

ID=26249551

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7911599A Expired GB2017861B (en) 1978-04-04 1979-04-03 Means for selectively transmitting drive

Country Status (1)

Country Link
GB (1) GB2017861B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2484531A1 (en) * 1980-06-11 1981-12-18 Renault IC hydraulic engine valve gear - has two pistons for each valve with control valve operated by seating between them
FR2671377A1 (en) * 1991-01-08 1992-07-10 Renault VALVE CONTROL DEVICE WITH SHUTDOWN FUNCTION FOR INTERNAL COMBUSTION ENGINE.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2484531A1 (en) * 1980-06-11 1981-12-18 Renault IC hydraulic engine valve gear - has two pistons for each valve with control valve operated by seating between them
FR2671377A1 (en) * 1991-01-08 1992-07-10 Renault VALVE CONTROL DEVICE WITH SHUTDOWN FUNCTION FOR INTERNAL COMBUSTION ENGINE.
EP0498682A1 (en) * 1991-01-08 1992-08-12 Regie Nationale Des Usines Renault S.A. Deactivating valve operating device for an internal combustion engine

Also Published As

Publication number Publication date
GB2017861B (en) 1982-07-14

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee