DE3677784D1 - Abschaltbare ventilsteuervorrichtung. - Google Patents

Abschaltbare ventilsteuervorrichtung.

Info

Publication number
DE3677784D1
DE3677784D1 DE8888111487T DE3677784T DE3677784D1 DE 3677784 D1 DE3677784 D1 DE 3677784D1 DE 8888111487 T DE8888111487 T DE 8888111487T DE 3677784 T DE3677784 T DE 3677784T DE 3677784 D1 DE3677784 D1 DE 3677784D1
Authority
DE
Germany
Prior art keywords
exhaust valve
exhaust
stroke
opening
engine
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 - Fee Related
Application number
DE8888111487T
Other languages
English (en)
Inventor
Zdenek Sidonius Meistrick
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.)
Jacobs Vehicle Systems Inc
Original Assignee
Jacobs Manufacturing Co
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 Jacobs Manufacturing Co filed Critical Jacobs Manufacturing Co
Application granted granted Critical
Publication of DE3677784D1 publication Critical patent/DE3677784D1/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • 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
    • F01L13/065Compression release engine retarders of the "Jacobs Manufacturing" type
    • 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
    • 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
    • F02D13/0273Multiple actuations of a valve within an engine cycle
    • 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
    • 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
    • F01L1/02Valve drive
    • F01L1/04Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/08Shape of cams

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Valve Device For Special Equipments (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Fluid-Driven Valves (AREA)
DE8888111487T 1985-08-09 1986-05-26 Abschaltbare ventilsteuervorrichtung. Expired - Fee Related DE3677784D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/763,962 US4592319A (en) 1985-08-09 1985-08-09 Engine retarding method and apparatus

Publications (1)

Publication Number Publication Date
DE3677784D1 true DE3677784D1 (de) 1991-04-04

Family

ID=25069312

Family Applications (3)

Application Number Title Priority Date Filing Date
DE90110325T Expired - Fee Related DE3689126T2 (de) 1985-08-09 1986-05-26 Vorrichtung für die Ausschaltung eines Ventils einer Brennkraftmaschine.
DE8888111487T Expired - Fee Related DE3677784D1 (de) 1985-08-09 1986-05-26 Abschaltbare ventilsteuervorrichtung.
DE8686107117T Expired DE3664945D1 (en) 1985-08-09 1986-05-26 Engine retarding method and apparatus

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE90110325T Expired - Fee Related DE3689126T2 (de) 1985-08-09 1986-05-26 Vorrichtung für die Ausschaltung eines Ventils einer Brennkraftmaschine.

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE8686107117T Expired DE3664945D1 (en) 1985-08-09 1986-05-26 Engine retarding method and apparatus

Country Status (17)

Country Link
US (1) US4592319A (de)
EP (1) EP0211170B1 (de)
JP (1) JPS6238813A (de)
CN (1) CN86103699A (de)
AT (1) ATE45408T1 (de)
AU (1) AU578204B2 (de)
BR (1) BR8602544A (de)
CA (1) CA1271675A (de)
DE (3) DE3689126T2 (de)
DK (1) DK242686A (de)
ES (3) ES8707327A1 (de)
IE (1) IE922012L (de)
IN (2) IN165794B (de)
MX (1) MX162178A (de)
NO (1) NO862153L (de)
NZ (1) NZ216294A (de)
ZA (1) ZA863774B (de)

Families Citing this family (74)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4664070A (en) * 1985-12-18 1987-05-12 The Jacobs Manufacturing Company Hydro-mechanical overhead for internal combustion engine
US4706624A (en) * 1986-06-10 1987-11-17 The Jacobs Manufacturing Company Compression release retarder with valve motion modifier
USRE33052E (en) * 1986-06-10 1989-09-12 The Jacobs Manufacturing Company Compression release retarder with valve motion modifier
US4706625A (en) * 1986-08-15 1987-11-17 The Jacobs Manufacturing Company Engine retarder with reset auto-lash mechanism
US4741307A (en) * 1987-02-17 1988-05-03 Pacific Diesel Brave Co. Apparatus and method for compression release retarding of an engine
US4793307A (en) * 1987-06-11 1988-12-27 The Jacobs Manufacturing Company Rocker arm decoupler for two-cycle engine retarder
US4901684A (en) * 1988-11-10 1990-02-20 Marlene Alfreda Wride Variable lift cam follower
DE3900739A1 (de) * 1989-01-12 1990-07-19 Man Nutzfahrzeuge Ag Verfahren zur steigerung der motorbremsleistung bei viertakt-hubkolben-brennkraftmaschinen
DE3922884A1 (de) * 1989-07-12 1991-01-24 Man Nutzfahrzeuge Ag Motorbremse fuer luftverdichtende brennkraftmaschinen
DE4007287A1 (de) * 1990-03-08 1991-09-12 Man Nutzfahrzeuge Ag Motorbremse fuer luftverdichtende brennkraftmaschine
US5048480A (en) * 1990-03-15 1991-09-17 Jacobs Brake Technology Corporation Variable timing process and mechanism for a compression release engine retarder
US5012778A (en) * 1990-09-21 1991-05-07 Jacobs Brake Technology Corporation Externally driven compression release retarder
US5205152A (en) * 1991-02-19 1993-04-27 Caterpillar Inc. Engine operation and testing using fully flexible valve and injection events
US5117790A (en) * 1991-02-19 1992-06-02 Caterpillar Inc. Engine operation using fully flexible valve and injection events
US5121723A (en) * 1991-03-29 1992-06-16 Cummins Electronics Company, Inc. Engine brake control apparatus and method
US5165375A (en) * 1992-01-03 1992-11-24 Jacobs Brake Technology Corporation Master piston for a compression release engine retarder
US5161501A (en) * 1992-01-03 1992-11-10 Jacobs Brake Technology Corporation Self-clippping slave piston
US5255650A (en) * 1992-06-01 1993-10-26 Caterpillar Inc. Engine braking utilizing unit valve actuation
US5347968A (en) * 1993-05-24 1994-09-20 Caterpillar Inc. Integral air compression system
US5357926A (en) * 1993-08-26 1994-10-25 Jacobs Brake Technology Corporation Compression release engine brake with selectively reduced engine exhaust noise
US5386809A (en) * 1993-10-26 1995-02-07 Cummins Engine Company, Inc. Pressure relief valve for compression engine braking system
US5647318A (en) * 1994-07-29 1997-07-15 Caterpillar Inc. Engine compression braking apparatus and method
US5540201A (en) * 1994-07-29 1996-07-30 Caterpillar Inc. Engine compression braking apparatus and method
US5526784A (en) * 1994-08-04 1996-06-18 Caterpillar Inc. Simultaneous exhaust valve opening braking system
US5462025A (en) * 1994-09-28 1995-10-31 Diesel Engine Retarders, Inc. Hydraulic circuits for compression release engine brakes
US5718199A (en) * 1994-10-07 1998-02-17 Diesel Engine Retarders, Inc. Electronic controls for compression release engine brakes
US5537975A (en) * 1994-10-07 1996-07-23 Diesel Engine Retarders, Inc. Electronically controlled compression release engine brakes
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
US8215292B2 (en) 1996-07-17 2012-07-10 Bryant Clyde C Internal combustion engine and working cycle
US5724939A (en) 1996-09-05 1998-03-10 Caterpillar Inc. Exhaust pulse boosted engine compression braking method
AU694703B2 (en) * 1996-10-11 1998-07-23 Mitsubishi Fuso Truck And Bus Corporation Engine-brake assisting system
WO1999019614A1 (en) * 1997-10-15 1999-04-22 Diesel Engine Retarders, Inc. Slave piston assembly with valve motion modifier
EP1036267A1 (de) 1997-11-04 2000-09-20 Diesel Engine Retarders, Inc. Ventiltrieb mit totgang
US6314926B1 (en) 1999-05-24 2001-11-13 Jenera Enterprises Ltd Valve control apparatus
US6234143B1 (en) 1999-07-19 2001-05-22 Mack Trucks, Inc. Engine exhaust brake having a single valve actuation
US6293248B1 (en) 1999-09-22 2001-09-25 Mack Trucks, Inc. Two-cycle compression braking on a four stroke engine using hydraulic lash adjustment
US6553962B1 (en) * 2000-08-02 2003-04-29 Ford Global Technologies, Inc. Exhaust valve deactivation and intake valve phasing to enable deceleration fuel shut off and engine braking
US6446598B1 (en) * 2000-12-11 2002-09-10 Caterpillar Inc. Compression brake actuation system and method
US6594996B2 (en) * 2001-05-22 2003-07-22 Diesel Engine Retarders, Inc Method and system for engine braking in an internal combustion engine with exhaust pressure regulation and turbocharger control
US6584885B2 (en) * 2001-06-12 2003-07-01 Visteon Global Technologies, Inc. Variable lift actuator
US20030037765A1 (en) * 2001-08-24 2003-02-27 Shafer Scott F. Linear control valve for controlling a fuel injector and engine compression release brake actuator and engine using same
AT5399U1 (de) * 2001-09-25 2002-06-25 Avl List Gmbh Variabler ventiltrieb
KR20040094419A (ko) * 2002-01-30 2004-11-09 디이젤 엔진 리타더스, 인코포레이티드 감압된 커먼 레일 및 전용 엔진 밸브를 사용하는 방법 및엔진 밸브 작동 시스템
AU2003208220A1 (en) * 2002-03-04 2003-09-16 Jenara Enterprises Ltd. Apparatus and method for retarding an engine with an exhaust brake and a compression release brake
EP1492946B1 (de) * 2002-04-08 2011-11-02 Jacobs Vehicle Systems, Inc. Kompaktes totgangsystem für variable ventilbetätigung
US6769405B2 (en) 2002-07-31 2004-08-03 Caterpillar Inc Engine with high efficiency hydraulic system having variable timing valve actuation
US6854442B2 (en) * 2002-12-02 2005-02-15 Caterpillar Inc Rotary valve for controlling a fuel injector and engine compression release brake actuator and engine using same
DE60319140T2 (de) * 2002-12-23 2009-03-19 Jacobs Vehicle Systems Inc., Bloomfield Motorbremsverfahren und -einrichtung
EP1803913B1 (de) * 2002-12-23 2010-08-11 Jacobs Vehicle Systems, Inc. Motorbremsverfahren und Einrichtung
US6779506B1 (en) * 2003-09-23 2004-08-24 International Engine Intellectual Property Company, Llc Engine brake control pressure strategy
KR101194145B1 (ko) * 2004-03-15 2012-10-23 자콥스 비히클 시스템즈, 인코포레이티드. 엔진 밸브 작동 장치
US7046133B2 (en) * 2004-06-16 2006-05-16 Butch Weast Brake light circuit for engine retarder
DE102004030452A1 (de) * 2004-06-24 2006-01-12 Robert Bosch Gmbh Verfahren und Vorrichtung zum Betreiben einer Brennkraftmaschine
BRPI0620594A2 (pt) * 2005-12-28 2011-11-16 Jacobs Vehicle Systems Inc método e sistema para freio de sangria de ciclo parcial
DE102006005336A1 (de) * 2006-02-07 2007-08-09 Daimlerchrysler Ag Brennkraftmaschine
US7789065B2 (en) * 2008-07-09 2010-09-07 Zhou Yang Engine braking apparatus with mechanical linkage and lash adjustment
US20100037854A1 (en) * 2008-08-18 2010-02-18 Zhou Yang Apparatus and method for engine braking
US9790824B2 (en) 2010-07-27 2017-10-17 Jacobs Vehicle Systems, Inc. Lost motion valve actuation systems with locking elements including wedge locking elements
CN103109049A (zh) 2010-07-27 2013-05-15 雅各布斯车辆***公司 组合发动机制动和正功率发动机空动阀致动***
JP5724296B2 (ja) * 2010-10-28 2015-05-27 いすゞ自動車株式会社 エンジンシステム
US8931273B2 (en) * 2012-05-17 2015-01-13 Ford Global Technologies, Llc Stored compressed air management for improved engine performance
CN204961000U (zh) 2012-09-24 2016-01-13 雅各布斯车辆***公司 带有自动复位的集成失动式摇臂制动器***
KR20160034313A (ko) * 2013-07-03 2016-03-29 보르그워너 인코퍼레이티드 배기 밸브의 전진을 통한 엔진 제동
SE539214C2 (sv) * 2013-12-05 2017-05-16 Scania Cv Ab Förbränningsmotor, fordon som innefattar en sådan förbränningsmotor och förfarande för att styra en sådan förbränningsmotor
DE102013022037A1 (de) 2013-12-20 2015-06-25 Daimler Ag Verfahren zum Betreiben einer Hubkolben-Verbrennungskraftmaschine
CN106285966B (zh) * 2015-05-12 2019-03-15 上海尤顺汽车部件有限公司 用于车辆缓速的发动机制动方法
CN107636267B (zh) 2015-05-18 2020-07-28 伊顿(意大利)有限公司 具有用作蓄压器的卸油阀的摇臂
DE102015016526A1 (de) 2015-12-19 2017-06-22 Daimler Ag Verfahren zum Betreiben einer Hubkolben-Verbrennungskraftmaschine
DE102016015457A1 (de) 2016-12-22 2018-06-28 Daimler Ag Verfahren zum Betreiben einer Hubkolben-Verbrennungskraftmaschine
DE102017120150A1 (de) 2017-09-01 2019-03-07 Man Truck & Bus Ag Verfahren zum Bremsen einer Brennkraftmaschine
EP3814613A4 (de) 2018-06-29 2022-03-23 Jacobs Vehicle Systems, Inc. Motorventilbetätigungssysteme mit totgangventiltriebskomponenten, mit zusammenklappbaren ventilbrücken mit verriegelungsstiften
BR112022000126A2 (pt) * 2019-08-05 2022-02-22 Jacobs Vehicle Systems Inc Potência positiva combinada e operação de desativação do cilindro com evento de válvula secundária
US20230392559A1 (en) * 2022-06-02 2023-12-07 GM Global Technology Operations LLC Engine exhaust braking system for equalizing pressures across exhaust valves during intake strokes

Family Cites Families (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH114028A (de) * 1926-06-16 1926-06-16 Motorwagenfabrik Berna A G Verfahren zur Bremsung von Kraftfahrzeugen mit Viertakt-Explosionsmotor durch Betrieb desselben als doppeltwirkender Kompressor.
GB307753A (de) * 1928-03-12 1930-06-11 Motorwagenfabrik Berna A.G.
CH150705A (de) * 1930-06-05 1931-11-15 Motorwagenfabrik Berna A G Bremssteuereinrichtung für insbesondere nach dem Dieselverfahren arbeitende Viertaktfahrzeugmotoren.
US2178152A (en) * 1938-03-14 1939-10-31 Clinton L Walker Brake cycle for internal combustion engines
GB737353A (en) * 1952-09-24 1955-09-21 Saurer Ag Adolph Improvements in the braking of motor vehicles with four-stroke reciprocating internal combustion engines
US2785668A (en) * 1953-11-11 1957-03-19 Fur Unternehmungen Der Eisen U Convertible internal combustion engine and compressor
US3220392A (en) * 1962-06-04 1965-11-30 Clessie L Cummins Vehicle engine braking and fuel control system
US3367312A (en) * 1966-01-28 1968-02-06 White Motor Corp Engine braking system
US3405699A (en) * 1966-06-17 1968-10-15 Jacobs Mfg Co Engine braking system with trip valve controlled piston
US3547087A (en) * 1968-08-09 1970-12-15 White Motor Corp Engine valve control for braking operation
US3786792A (en) * 1971-05-28 1974-01-22 Mack Trucks Variable valve timing system
US3809033A (en) * 1972-07-11 1974-05-07 Jacobs Mfg Co Rocker arm engine brake system
US4009695A (en) * 1972-11-14 1977-03-01 Ule Louis A Programmed valve system for internal combustion engine
US3859970A (en) * 1973-01-22 1975-01-14 Allis Chalmers Engine retarder brake
US4000756A (en) * 1974-03-25 1977-01-04 Ule Louis A High speed engine valve actuator
US4054156A (en) * 1975-02-24 1977-10-18 The Weatherhead Company Exhaust brake valve
DE2658927A1 (de) * 1976-12-24 1978-07-06 Maschf Augsburg Nuernberg Ag Bremseinrichtung fuer viertakt-hubkolbenbrennkraftmaschinen
US4150640A (en) * 1977-12-20 1979-04-24 Cummins Engine Company, Inc. Fluidic exhaust valve opening system for an engine compression brake
US4398510A (en) * 1978-11-06 1983-08-16 The Jacobs Manufacturing Company Timing mechanism for engine brake
US4271796A (en) * 1979-06-11 1981-06-09 The Jacobs Manufacturing Company Pressure relief system for engine brake
US4473047A (en) * 1980-02-25 1984-09-25 The Jacobs Mfg. Company Compression release engine brake
CA1133342A (en) * 1980-03-28 1982-10-12 Laszlo Tamas Engine cylinder cutout system and control therefor
FR2500063A1 (fr) * 1981-02-18 1982-08-20 Aerospatiale Moteur thermique a quatre temps susceptible de surpuissance temporaire
US4399787A (en) * 1981-12-24 1983-08-23 The Jacobs Manufacturing Company Engine retarder hydraulic reset mechanism
CA1247483A (en) * 1982-12-09 1988-12-28 Raymond N. Quenneville Compression release engine retarder for multi- cylinder internal combustion engines
US4485780A (en) * 1983-05-05 1984-12-04 The Jacobs Mfg. Company Compression release engine retarder
US4572114A (en) * 1984-06-01 1986-02-25 The Jacobs Manufacturing Company Process and apparatus for compression release engine retarding producing two compression release events per cylinder per engine cycle

Also Published As

Publication number Publication date
DK242686D0 (da) 1986-05-23
DE3664945D1 (en) 1989-09-14
DE3689126T2 (de) 1994-03-03
MX162178A (es) 1991-04-05
IN168930B (de) 1991-07-13
JPH0366492B2 (de) 1991-10-17
CA1271675A (en) 1990-07-17
BR8602544A (pt) 1987-03-17
DK242686A (da) 1987-02-10
DE3689126D1 (de) 1993-11-04
US4592319A (en) 1986-06-03
ES557456A0 (es) 1987-12-16
ES557457A0 (es) 1987-10-16
IE922012L (en) 1992-07-01
IN165794B (de) 1990-01-13
ATE45408T1 (de) 1989-08-15
ES555523A0 (es) 1987-07-01
AU578204B2 (en) 1988-10-13
NO862153L (no) 1987-02-10
EP0211170A1 (de) 1987-02-25
CN86103699A (zh) 1987-02-04
ES8801421A1 (es) 1987-12-16
EP0211170B1 (de) 1989-08-09
NZ216294A (en) 1987-08-31
ES8800394A1 (es) 1987-10-16
AU5796886A (en) 1987-02-12
ZA863774B (en) 1987-01-28
ES8707327A1 (es) 1987-07-01
JPS6238813A (ja) 1987-02-19

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8339 Ceased/non-payment of the annual fee