GB1279977A - Internal combustion engine valve actuator mechanism - Google Patents

Internal combustion engine valve actuator mechanism

Info

Publication number
GB1279977A
GB1279977A GB5956868A GB5956868A GB1279977A GB 1279977 A GB1279977 A GB 1279977A GB 5956868 A GB5956868 A GB 5956868A GB 5956868 A GB5956868 A GB 5956868A GB 1279977 A GB1279977 A GB 1279977A
Authority
GB
Grant status
Application
Patent type
Prior art keywords
valve
engine
exhaust
rocker
cam
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
GB5956868A
Inventor
Philip George Pratt
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.)
Vauxhall Motors Ltd
Original Assignee
Vauxhall Motors 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

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/12Transmitting gear between valve drive and valve
    • F01L1/18Rocking arms or levers
    • F01L1/181Centre pivot rocking arms
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0015Modifications 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
    • F01L13/0021Modifications 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 by modification of rocker arm ratio
    • F01L13/0026Modifications 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 by modification of rocker arm ratio by means of an eccentric
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/06Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for braking
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D13/00Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
    • F02D13/02Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
    • F02D13/04Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation using engine as brake
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D15/00Varying compression ratio
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D2700/00Mechanical control of speed or power of a single cylinder piston engine
    • F02D2700/03Controlling by changing the compression ratio
    • F02D2700/035Controlling by changing the compression ratio without modifying the volume of the compression space, e.g. by changing the valve timing

Abstract

1279977 Valve gear VAUXHALL MOTORS Ltd 11 Dec 1969 [14 Dec 1968] 59568/68 Heading F1B An I.C. engine valve actuating mechanism for enabling the engine to act as a compressor during engine braking, has an exhaust valve cam (not shown) which is provided, in addition to the normal cam lobe, with additional cam surface arranged circumferentially to each side of the lobe, and the exhaust valve rocker 4 is mounted on an eccentric 5 carried by an angularly adjustable rocker-shaft 1. The rocker-shaft and attached eccentric shown are in position for normal engine operation. However, by angularly adjusting the shaft to the "brake" position as by a linkage or gear mechanism, the clearance between the end 7 of the rocker and the exhaust valve 3 is reduced so that the additional surfaces of the exhaust valve cam become effective to open the exhaust valve just before the end of the compression stroke, keep it open during the subsequent power and exhaust strokes and close it during the induction stroke. Angular adjustment of the rocker-shaft to provide the engine braking may be synchronized with mechanism to interrupt the engine fuel-supply or render the ignition system inoperative, or both.
GB5956868A 1968-12-14 1968-12-14 Internal combustion engine valve actuator mechanism Expired GB1279977A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5956868A GB1279977A (en) 1968-12-14 1968-12-14 Internal combustion engine valve actuator mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5956868A GB1279977A (en) 1968-12-14 1968-12-14 Internal combustion engine valve actuator mechanism

Publications (1)

Publication Number Publication Date
GB1279977A true true GB1279977A (en) 1972-06-28

Family

ID=10484013

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5956868A Expired GB1279977A (en) 1968-12-14 1968-12-14 Internal combustion engine valve actuator mechanism

Country Status (1)

Country Link
GB (1) GB1279977A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2457385A1 (en) * 1979-03-19 1980-12-19 Jacobs Mfg Co engine brake system and brake METHOD
EP0267244A1 (en) * 1986-05-21 1988-05-18 Bennett Automotive Technology Pty. Ltd. Engines for use with gaseous fuels
EP0543210A1 (en) * 1991-11-08 1993-05-26 IVECO FIAT S.p.A. Engine comprising a continuous braking device, particularly for an industrial vehicle
US5586531A (en) * 1995-11-28 1996-12-24 Cummins Engine Company, Inc. Engine retarder cycle
US5626116A (en) * 1995-11-28 1997-05-06 Cummins Engine Company, Inc. Dedicated rocker lever and cam assembly for a compression braking system
WO1998045579A1 (en) * 1997-04-09 1998-10-15 Deutz Aktiengesellschaft Multicylinder internal combustion engine with two inlet valves and two outlet valves
CN101922326A (en) * 2009-06-11 2010-12-22 斯特雷帕拉瓦有限公司 A driving assembly for a motor vehicle engine brake
WO2011141833A3 (en) * 2010-05-10 2012-01-05 Fiat Powertrain Technologies S.P.A. Multi-cylinder internal combustion engine with variable actuation of the engine valves
EP2662542A4 (en) * 2011-01-05 2016-06-22 Shanghai Universoon Autoparts Auxiliary valve actuating mechanism of engine

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2457385A1 (en) * 1979-03-19 1980-12-19 Jacobs Mfg Co engine brake system and brake METHOD
EP0267244A4 (en) * 1986-05-21 1989-06-21 Bennett Automotive Technology Engines for use with gaseous fuels.
EP0267244A1 (en) * 1986-05-21 1988-05-18 Bennett Automotive Technology Pty. Ltd. Engines for use with gaseous fuels
EP0543210A1 (en) * 1991-11-08 1993-05-26 IVECO FIAT S.p.A. Engine comprising a continuous braking device, particularly for an industrial vehicle
US5335636A (en) * 1991-11-08 1994-08-09 Iveco Fiat S.P.A. Engine comprising a continuous braking device, particularly for an industrial vehicle
US5626116A (en) * 1995-11-28 1997-05-06 Cummins Engine Company, Inc. Dedicated rocker lever and cam assembly for a compression braking system
US5586531A (en) * 1995-11-28 1996-12-24 Cummins Engine Company, Inc. Engine retarder cycle
US6205966B1 (en) 1997-04-09 2001-03-27 Deutz Ag Multicylinder internal combustion engine with two inlet valves and two outlet valves
WO1998045579A1 (en) * 1997-04-09 1998-10-15 Deutz Aktiengesellschaft Multicylinder internal combustion engine with two inlet valves and two outlet valves
CN101922326A (en) * 2009-06-11 2010-12-22 斯特雷帕拉瓦有限公司 A driving assembly for a motor vehicle engine brake
WO2011141833A3 (en) * 2010-05-10 2012-01-05 Fiat Powertrain Technologies S.P.A. Multi-cylinder internal combustion engine with variable actuation of the engine valves
EP2662542A4 (en) * 2011-01-05 2016-06-22 Shanghai Universoon Autoparts Auxiliary valve actuating mechanism of engine
US9416692B2 (en) 2011-01-05 2016-08-16 Shanghai Universoon Autoparts Co., Ltd. Auxiliary valve actuating mechanism of engine
US9732643B2 (en) 2011-01-05 2017-08-15 Shanghai Universoon Autoparts Co., Ltd. Engine valve actuation mechanism for producing a variable engine valve event

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees