DK0458857T3 - Fremgangsmåde og arrangement til motorbremsning med en firetakts forbrændingsmotor - Google Patents

Fremgangsmåde og arrangement til motorbremsning med en firetakts forbrændingsmotor

Info

Publication number
DK0458857T3
DK0458857T3 DK90903446.4T DK90903446T DK0458857T3 DK 0458857 T3 DK0458857 T3 DK 0458857T3 DK 90903446 T DK90903446 T DK 90903446T DK 0458857 T3 DK0458857 T3 DK 0458857T3
Authority
DK
Denmark
Prior art keywords
stroke
exhaust system
arrangement
pct
internal combustion
Prior art date
Application number
DK90903446.4T
Other languages
English (en)
Inventor
Ulrich Gobert
Ola Danielson
Original Assignee
Volvo Ab
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20375056&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DK0458857(T3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Volvo Ab filed Critical Volvo Ab
Application granted granted Critical
Publication of DK0458857T3 publication Critical patent/DK0458857T3/da

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
    • F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
    • F02D13/04—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation using engine as brake
    • 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
    • F01L13/06—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for braking
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Valve Device For Special Equipments (AREA)
  • Regulating Braking Force (AREA)
  • Hybrid Electric Vehicles (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
DK90903446.4T 1989-02-15 1990-02-15 Fremgangsmåde og arrangement til motorbremsning med en firetakts forbrændingsmotor DK0458857T3 (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8900517A SE466320B (sv) 1989-02-15 1989-02-15 Foerfarande och anordning foer motorbromsning med en fyrtakts foerbraenningsmotor

Publications (1)

Publication Number Publication Date
DK0458857T3 true DK0458857T3 (da) 1994-03-07

Family

ID=20375056

Family Applications (1)

Application Number Title Priority Date Filing Date
DK90903446.4T DK0458857T3 (da) 1989-02-15 1990-02-15 Fremgangsmåde og arrangement til motorbremsning med en firetakts forbrændingsmotor

Country Status (13)

Country Link
US (1) US5146890A (da)
EP (1) EP0458857B1 (da)
JP (1) JP2931090B2 (da)
KR (1) KR0158458B1 (da)
AT (1) ATE93929T1 (da)
AU (1) AU637352B2 (da)
BR (1) BR9007110A (da)
CA (1) CA2047219C (da)
DE (1) DE69003094T2 (da)
DK (1) DK0458857T3 (da)
ES (1) ES2044564T3 (da)
SE (1) SE466320B (da)
WO (1) WO1990009514A1 (da)

Families Citing this family (91)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1255447B (it) * 1991-11-08 1995-10-31 Iveco Fiat Motore provvisto di un dispositivo di frenatura continua, particolarmente per un veicolo industriale.
SE470363B (sv) * 1992-06-17 1994-01-31 Volvo Ab Förfarande och anordning för motorbromsning med en flercylindrig förbränningsmotor
SE501193C2 (sv) * 1993-04-27 1994-12-05 Volvo Ab Avgasventilmekanism i en förbränningsmotor
US5406918A (en) * 1993-08-04 1995-04-18 Hino Jidosha Kogyo Kabushiki Kaisha Internal combustion engine
SE502614C2 (sv) * 1994-03-29 1995-11-20 Volvo Ab Anordning för reglering av motorbromseffekten hos en förbränningsmotor
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
US5479890A (en) * 1994-10-07 1996-01-02 Diesel Engine Retarders, Inc. Compression release engine brakes with electronically controlled, multi-coil hydraulic valves
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
US5511460A (en) * 1995-01-25 1996-04-30 Diesel Engine Retarders, Inc. Stroke limiter for hydraulic actuator pistons in compression release engine brakes
US5619965A (en) 1995-03-24 1997-04-15 Diesel Engine Retarders, Inc. Camless engines with compression release braking
JP4129489B2 (ja) * 1995-08-08 2008-08-06 ジェイコブス ビークル システムズ、インコーポレイテッド カムと電子液圧エンジンバルブとの組み合わせ制御を有する内燃機関
US5746175A (en) * 1995-08-08 1998-05-05 Diesel Engine Retarders, Inc. Four-cycle internal combustion engines with two-cycle compression release braking
US5829397A (en) 1995-08-08 1998-11-03 Diesel Engine Retarders, Inc. System and method for controlling the amount of lost motion between an engine valve and a valve actuation means
US5537976A (en) * 1995-08-08 1996-07-23 Diesel Engine Retarders, Inc. Four-cycle internal combustion engines with two-cycle compression release braking
US6125828A (en) * 1995-08-08 2000-10-03 Diesel Engine Retarders, Inc. Internal combustion engine with combined cam and electro-hydraulic engine valve control
IT1280907B1 (it) * 1995-08-11 1998-02-11 Iveco Fiat Motore endotermico per un veicolo e relativo metodo di controllo
US5626116A (en) * 1995-11-28 1997-05-06 Cummins Engine Company, Inc. Dedicated rocker lever and cam assembly for a compression braking system
GB2341639B (en) * 1995-11-28 2000-06-07 Cummins Engine Co Inc An engine retarder cycle for operation of an engine brake
US5586531A (en) * 1995-11-28 1996-12-24 Cummins Engine Company, Inc. Engine retarder cycle
US5724939A (en) * 1996-09-05 1998-03-10 Caterpillar Inc. Exhaust pulse boosted engine compression braking method
DE19637999A1 (de) * 1996-09-18 1998-03-19 Daimler Benz Ag Verfahren zum Betreiben einer Motorbremse und Vorrichtung zur Durchführung des Verfahrens
SE507506C2 (sv) * 1996-10-03 1998-06-15 Volvo Lastvagnar Ab Turbocompoundmotor med kompressionsbroms
US5787858A (en) * 1996-10-07 1998-08-04 Meneely; Vincent Allan Engine brake with controlled valve closing
AU694703B2 (en) * 1996-10-11 1998-07-23 Mitsubishi Fuso Truck And Bus Corporation Engine-brake assisting system
US5809964A (en) * 1997-02-03 1998-09-22 Diesel Engine Retarders, Inc. Method and apparatus to accomplish exhaust air recirculation during engine braking and/or exhaust gas recirculation during positive power operation of an internal combustion engine
DE19728350A1 (de) * 1997-07-03 1998-12-03 Daimler Benz Ag Verfahren und Vorrichtung zur Erhöhung der Motorbremsleistung von Brennkraftmaschinen
US5996550A (en) * 1997-07-14 1999-12-07 Diesel Engine Retarders, Inc. Applied lost motion for optimization of fixed timed engine brake system
DE19733322A1 (de) 1997-08-01 1999-02-04 Mwp Mahle J Wizemann Pleuco Gm Ventilsteuerung einer als Antrieb oder Bremse schaltbaren Brennkraftmaschine
US6321701B1 (en) 1997-11-04 2001-11-27 Diesel Engine Retarders, Inc. Lost motion valve actuation system
US6647954B2 (en) * 1997-11-17 2003-11-18 Diesel Engine Retarders, Inc. Method and system of improving engine braking by variable valve actuation
BR9815102A (pt) * 1997-11-21 2000-12-12 Diesel Engine Retarders Inc Motor de combustão interna.
WO1999030011A1 (en) 1997-12-11 1999-06-17 Diesel Engine Retarders, Inc. Variable lost motion valve actuator and method
US6293237B1 (en) 1997-12-11 2001-09-25 Diesel Engine Retarders, Inc. Variable lost motion valve actuator and method
US8820276B2 (en) 1997-12-11 2014-09-02 Jacobs Vehicle Systems, Inc. Variable lost motion valve actuator and method
US6000374A (en) * 1997-12-23 1999-12-14 Diesel Engine Retarders, Inc. Multi-cycle, engine braking with positive power valve actuation control system and process for using the same
US6718940B2 (en) 1998-04-03 2004-04-13 Diesel Engine Retarders, Inc. Hydraulic lash adjuster with compression release brake
FR2780446B1 (fr) * 1998-06-29 2000-12-29 Inst Francais Du Petrole Procede de controle de l'admission d'un moteur turbo-compresse et moteur associe
DE19833147C2 (de) * 1998-07-23 2000-05-31 Daimler Chrysler Ag Verfahren zur Einstellung der Motorbremsleistung einer aufgeladenen Brennkraftmaschine
US6234143B1 (en) 1999-07-19 2001-05-22 Mack Trucks, Inc. Engine exhaust brake having a single valve actuation
EP1222374B1 (en) 1999-09-10 2010-01-27 Diesel Engine Retarders, Inc. Lost motion rocker arm system with integrated compression brake
US6394050B1 (en) 1999-09-15 2002-05-28 Diesel Engine Retarders, Inc. Actuator piston assembly for a rocker arm system
WO2001020150A1 (en) 1999-09-17 2001-03-22 Diesel Engine Retarders, Inc. Captive volume accumulator for a lost motion system
US6394067B1 (en) 1999-09-17 2002-05-28 Diesel Engine Retardersk, Inc. Apparatus and method to supply oil, and activate rocker brake for multi-cylinder retarding
US6216667B1 (en) 1999-11-12 2001-04-17 Frank J. Pekar Method and device for a supercharged engine brake
EP1242735B1 (en) 1999-12-20 2010-10-13 Jacobs Vehicle Systems, Inc. Method and apparatus for hydraulic clip and reset of engine brake systems utilizing lost motion
US6386160B1 (en) 1999-12-22 2002-05-14 Jenara Enterprises, Ltd. Valve control apparatus with reset
US6321717B1 (en) * 2000-02-15 2001-11-27 Caterpillar Inc. Double-lift exhaust pulse boosted engine compression braking method
US6868824B2 (en) * 2000-03-31 2005-03-22 Diesel Engine Retarders, Inc. System and method of gas recirculation in an internal combustion engine
US6584954B2 (en) 2000-03-31 2003-07-01 Robb Janak Use of external exhaust gas recirculation (“EGR”) to improve compression release braking and method for EGR valve and system cleaning
DE10020884A1 (de) 2000-04-28 2001-10-31 Mahle Ventiltrieb Gmbh Steuereinrichtung für ein Ein- oder Auslaßventil eines Verbrennungsmotors
WO2002018761A1 (en) 2000-08-29 2002-03-07 Jenara Enterprises Ltd. Apparatus and method to oprate an engine exhaust brake together with an exhaust gas recirculation system
US6446598B1 (en) 2000-12-11 2002-09-10 Caterpillar Inc. Compression brake actuation system and method
US6609495B1 (en) 2000-12-19 2003-08-26 Caterpillar Inc Electronic control of engine braking cycle
WO2002101212A2 (en) 2001-06-13 2002-12-19 Diesel Engine Retarders, Inc. Latched reset mechanism for engine brake
US6622694B2 (en) * 2001-07-30 2003-09-23 Caterpillar Inc Reduced noise engine compression release braking
US6418720B1 (en) 2001-08-31 2002-07-16 Caterpillar Inc. Method and a device for engine braking a four stroke internal combustion engine
US6805093B2 (en) 2002-04-30 2004-10-19 Mack Trucks, Inc. Method and apparatus for combining exhaust gas recirculation and engine exhaust braking using single valve actuation
SE522146C2 (sv) * 2002-05-07 2004-01-20 Volvo Lastvagnar Ab Metod för regenerering av ett partikelfilter vid motorbromsning samt fordon i vilket en sådan metod utnyttjas
DE10250771B4 (de) * 2002-10-30 2014-09-11 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Motorbremseinrichtung und Verfahren zu deren Steuerung
SE525932C2 (sv) 2003-11-27 2005-05-31 Volvo Lastvagnar Ab Förfarande vid bromsning med en förbränningsmotor med variabelt turboaggregat
DE112005000030D2 (de) * 2004-07-17 2006-10-05 Mahle Ventiltrieb Gmbh Steuereinrichtung für ein Ventil, insbesondere ein Gaswechselventil eines Verbrennungsmotors
WO2006023375A2 (en) * 2004-08-17 2006-03-02 Jacobs Vehicle Systems, Inc. Combined exhaust restriction and variable valve actuation
DE102007060822A1 (de) 2007-12-18 2009-06-25 Daimler Ag Verfahren zum Steuern einer Motorbremseinrichtung einer Brennkraftmaschine und Brennkraftmaschine für ein Kraftfahrzeug
AT506338A1 (de) * 2008-02-04 2009-08-15 Man Nutzfahrzeuge Oesterreich Verfahren zur regenerierung eines im abgasstrang eines fahrzeug-dieselmotors angeordneten partikelfilters
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
CN102003240B (zh) * 2009-08-31 2013-01-16 上海尤顺汽车部件有限公司 一种发动机制动装置的改进结构
WO2010078280A2 (en) * 2009-01-05 2010-07-08 Shanghai Universoon Autoparts Co., Ltd Engine braking devices and methods
BRPI0922516B1 (pt) * 2009-01-05 2020-10-06 Shanguai Universoon Autoparts Co.,Ltd Aparelho para alterar um motor de combustão interna de uma operação normal do motor para uma operação de frenagem a motor e método para converter um motor de combustão interna de uma operação normal do motor em uma operação de frenagem a motor
US7984705B2 (en) 2009-01-05 2011-07-26 Zhou Yang Engine braking apparatus with two-level pressure control valves
US7712449B1 (en) * 2009-05-06 2010-05-11 Jacobs Vehicle Systems, Inc. Lost motion variable valve actuation system for engine braking and early exhaust opening
CN102261283B (zh) 2010-05-27 2013-10-09 上海尤顺汽车部件有限公司 一种固链式发动机制动装置
CN107829791B (zh) * 2010-07-27 2021-01-05 雅各布斯车辆系统公司 组合发动机制动和正功率发动机空动阀致动系统
WO2013005070A1 (en) 2011-07-06 2013-01-10 Renault Trucks Valve actuation mechanism and automotive vehicle comprising such a valve actuation
CN103688028B (zh) 2011-07-22 2016-10-19 沃尔沃卡车集团 阀致动机构和包括这种阀致动机构的机动车辆
EP2734713B1 (en) 2011-07-22 2015-07-01 Volvo Lastvagnar AB Valve actuation mechanism and automotive vehicle comprising such a valve actuation mechanism
US9163534B2 (en) 2011-07-22 2015-10-20 Volvo Trucks AB Valve actuation mechanism and automotive vehicle comprising such a valve actuation mechanism
EP2900946B1 (en) 2012-09-25 2017-02-15 Volvo Lastvagnar Ab Valve actuation mechanism and automotive vehicle equipped with such a valve actuation mechanism
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
DE102015016526A1 (de) * 2015-12-19 2017-06-22 Daimler Ag Verfahren zum Betreiben einer Hubkolben-Verbrennungskraftmaschine
SE540139C2 (en) * 2016-07-11 2018-04-10 Scania Cv Ab Method of changing gear ratio in a gearbox of a vehicle
CN109804151B (zh) 2016-10-06 2022-03-29 沃尔沃卡车集团 内燃发动机和用于控制发动机的制动扭矩的方法
DE102016015457A1 (de) * 2016-12-22 2018-06-28 Daimler Ag Verfahren zum Betreiben einer Hubkolben-Verbrennungskraftmaschine
WO2018166597A1 (en) 2017-03-16 2018-09-20 Volvo Truck Corporation A system for improved engine braking
DE102017004819A1 (de) * 2017-05-18 2018-11-22 Man Truck & Bus Ag Betriebsverfahren für ein Fahrerassistenzsystem und Kraftfahrzeug
KR20200063453A (ko) * 2018-11-28 2020-06-05 현대자동차주식회사 자동차의 배기브레이크 자동 제어 시스템 및 방법
CN114729603A (zh) 2019-11-20 2022-07-08 沃尔沃卡车集团 用于控制内燃发动机的发动机制动的方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202998C (da) *
DE227925C (da) *
CH118905A (de) * 1926-02-11 1927-02-16 Franz Brozincevic & Cie Zum Bremsen benutzbarer Viertaktmotor für Fahrzeuge.
CH310325A (de) * 1952-11-28 1955-10-15 Saurer Ag Adolph Motorbremse an 4-Takt-Brennkraftmaschinen.
DE3003566A1 (de) * 1980-02-01 1981-08-06 Klöckner-Humboldt-Deutz AG, 5000 Köln Bremsvorrichtung fuer eine ventilgesteuerte brennkraftmaschine
DE3428627A1 (de) * 1984-08-03 1986-02-13 Daimler-Benz Ag, 7000 Stuttgart Viertakt-brennkraftmaschine
DE3506894A1 (de) * 1985-02-27 1986-08-28 Klöckner-Humboldt-Deutz AG, 5000 Köln Motorbremsvorrichtung fuer brennkraftmaschinen
AT404288B (de) * 1986-10-30 1998-10-27 Avl Verbrennungskraft Messtech Motorbremse bei einer brennkraftmaschine für kraftfahrzeuge
DE3900739A1 (de) * 1989-01-12 1990-07-19 Man Nutzfahrzeuge Ag Verfahren zur steigerung der motorbremsleistung bei viertakt-hubkolben-brennkraftmaschinen

Also Published As

Publication number Publication date
ES2044564T3 (es) 1994-01-01
CA2047219C (en) 1999-11-30
SE8900517D0 (sv) 1989-02-15
EP0458857B1 (en) 1993-09-01
BR9007110A (pt) 1991-11-12
US5146890A (en) 1992-09-15
AU637352B2 (en) 1993-05-27
JP2931090B2 (ja) 1999-08-09
WO1990009514A1 (en) 1990-08-23
KR920701618A (ko) 1992-08-12
JPH04503987A (ja) 1992-07-16
KR0158458B1 (ko) 1998-12-15
ATE93929T1 (de) 1993-09-15
SE8900517L (sv) 1990-08-16
SE466320B (sv) 1992-01-27
AU5105490A (en) 1990-09-05
DE69003094T2 (de) 1994-04-07
DE69003094D1 (de) 1993-10-07
EP0458857A1 (en) 1991-12-04
CA2047219A1 (en) 1990-08-16

Similar Documents

Publication Publication Date Title
DK0458857T3 (da) Fremgangsmåde og arrangement til motorbremsning med en firetakts forbrændingsmotor
EP1136678A3 (en) Control system for controlling variable valve type internal combustion engine
ES2116123T3 (es) Procedimiento para el frenado por motor con un motor de combustion interna de cuatro tiempos.
DE3070346D1 (en) Engine braking apparatus
SE9302159D0 (sv) Ventilmekanism i en foerbraenningsmotor
SE9301416L (sv) Avgasventilmekanism i en förbränningsmotor
KR950702669A (ko) 다실린더 내연기관의 엔진감속 방법 및 장치(method and device for motor-braking by means of a multi-cylinder internal combustion engine)
DE59003764D1 (de) Motorbremse für luftverdichtende Brennkraftmaschinen.
DE59100515D1 (de) Motorbremse für luftverdichtende Brennkraftmaschinen.
DK1127217T3 (da) Fremgangsmåde til drift af en dieselforbrændingskraftmaskine
ES2013785B3 (es) Metodo y dispositivo para controlar el ciclo de trabajo de un motor de combustion interna
TW332239B (en) A two-stroke internal combustion engine and a method of controlling the same
NO874678D0 (no) Fire-takts forbrenningsmotor med overladning og fremgangsmaate for drift av denne.
SE9501160L (sv) Ventilmekanism i en förbränningsmotor
SE9801544L (sv) Anordning för avgasåterföring vid förbränningsmotor samt en motor innefattande en sådan anordning
SE8903220L (sv) Anordning foer att minska gasvaexlingsfoerluster hos en foerbraenningsmotor
GB2304819A (en) A restricted induction reciprocating piston type internal combustion engine
DE69004874D1 (de) Zweiaktmotor mit Drehschiebern und Betrieb dieses Motors.
EP1522690A3 (en) Improved internal combustion engine and working cycle
JPS6325330A (ja) 内燃機関の排気ブレ−キ装置
TW270163B (en) Pressure reducer for internal combustion engine
ES8405886A1 (es) Motor diesel de pistones proporcionante de un funcionamiento como mando de suministro de aire
GB1089602A (en) Means for reducing starting torque in 4-cycle engines
ES8204797A1 (es) Un aparato de frenado por motor, del tipo de descompensacion de gas, para uso con motores de combustion interna.
JPH0351890B2 (da)