BR0212849A - Mecanismo de válvula de exaustão em motores de combustão interna - Google Patents

Mecanismo de válvula de exaustão em motores de combustão interna

Info

Publication number
BR0212849A
BR0212849A BR0212849-7A BR0212849A BR0212849A BR 0212849 A BR0212849 A BR 0212849A BR 0212849 A BR0212849 A BR 0212849A BR 0212849 A BR0212849 A BR 0212849A
Authority
BR
Brazil
Prior art keywords
rocker arm
cylinder chamber
internal combustion
valve mechanism
piston
Prior art date
Application number
BR0212849-7A
Other languages
English (en)
Inventor
Per Persson
Original Assignee
Volvo Lastvagnar 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
Application filed by Volvo Lastvagnar Ab filed Critical Volvo Lastvagnar Ab
Publication of BR0212849A publication Critical patent/BR0212849A/pt

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
    • 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
    • F01L13/065—Compression release engine retarders of the "Jacobs Manufacturing" type
    • 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
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/18—Rocking arms or levers
    • F01L1/181—Centre pivot rocking arms
    • 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
    • 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
    • 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
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L2305/00—Valve arrangements comprising rollers
    • 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
    • F01L2760/00—Control of valve gear to facilitate reversing, starting, braking of four stroke engines
    • F01L2760/003—Control of valve gear to facilitate reversing, starting, braking of four stroke engines for switching to compressor action in order to brake
    • F01L2760/004—Control of valve gear to facilitate reversing, starting, braking of four stroke engines for switching to compressor action in order to brake whereby braking is exclusively produced by compression in the cylinders

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)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

"MECANISMO DE VáLVULA DE EXAUSTãO EM MOTORES DE COMBUSTãO INTERNA". Mecanismo de válvula em um motor de combustão interna, compreendendo um mecanismo de válvula de espaçamento e resgate, em forma de um pistom em uma câmara de cilindro em uma extremidade (7) de um braço oscilante de exaustão (2) e um circuito hidráulico com um dispositivo de válvula para suprimento ou retirada por drenagem de fluido de pressão ao e a partir da câmara de cilindro. Uma segunda câmara de cilindro (41) com um pistom (42) atuando em uma direção oposta fica disposto no braço oscilante e se comunica com a primeira câmara de cilindro mencionada em primeiro lugar. Um braço oscilante de frenagem (46) fica engastado no mesmo eixo de braço oscilante (3) do braço oscilante e possui uma extremidade externa (53), a qual atua de encontro ao pistom na segunda câmara de cilindro. O braço oscilante de frenagem possui seu próprio elemento excêntrico (50), com lóbulos excêntricos de frenagem em uma lateral do elemento excêntrico do braço oscilante de exaustão. Quando o fluido de pressão, quando passando do modo de acionamento ao modo de frenagem, é suprido às câmaras de cilindro, o espaçamento de válvula é primeiro ajustada em zero. Sob a influência dos lóbulos excêntricos de frenagem, o pistom na segunda câmara de cilindro bombeia óleo para a primeira câmara de cilindro, de forma que o pistom na mesma é pressionado para baixo e abre a válvula de exaustão (14).
BR0212849-7A 2001-10-11 2002-10-10 Mecanismo de válvula de exaustão em motores de combustão interna BR0212849A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0103388A SE523849C2 (sv) 2001-10-11 2001-10-11 Avgasventilmekanism i förbränningsmotor
PCT/SE2002/001849 WO2003031778A1 (en) 2001-10-11 2002-10-10 Exhaust valve mechanism in internal combustion engines

Publications (1)

Publication Number Publication Date
BR0212849A true BR0212849A (pt) 2004-10-13

Family

ID=20285616

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0212849-7A BR0212849A (pt) 2001-10-11 2002-10-10 Mecanismo de válvula de exaustão em motores de combustão interna

Country Status (8)

Country Link
US (1) US6983725B2 (pt)
EP (1) EP1442200B1 (pt)
JP (1) JP4292078B2 (pt)
AT (1) ATE370315T1 (pt)
BR (1) BR0212849A (pt)
DE (1) DE60221878T2 (pt)
SE (1) SE523849C2 (pt)
WO (1) WO2003031778A1 (pt)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004081352A1 (en) * 2003-03-06 2004-09-23 Jenara Enterprises Ltd. Modal variable valve actuation system for internal combustion engine and method for operating the same
SE525678C2 (sv) 2003-08-25 2005-04-05 Volvo Lastvagnar Ab Anordning vid förbränningsmotor
SE526636C2 (sv) * 2004-02-23 2005-10-18 Volvo Lastvagnar Ab Avgasventilmekanism för en förbränningsmotor
WO2005107418A2 (en) 2004-05-06 2005-11-17 Jacobs Vehicle Systems, Inc. Primary and offset actuator rocker arms for engine valve actuation
EP1792056B1 (en) * 2004-09-09 2011-08-17 Volvo Lastvagnar AB Apparatus for an internal combustion engine
US20080271692A1 (en) * 2004-12-13 2008-11-06 Weaver Robert R Rocker arm for valve actuation
BRPI0519864B1 (pt) * 2005-02-11 2018-07-24 Volvo Lastvagnar Ab Dispositivo para motor de combustão interna
EP1920143B1 (en) 2005-08-18 2010-10-13 Renault Trucks Control method for the intake and exhaust valves of an engine and internal combustion engine comprising such valves
BRPI0620594A2 (pt) * 2005-12-28 2011-11-16 Jacobs Vehicle Systems Inc método e sistema para freio de sangria de ciclo parcial
US20070163243A1 (en) * 2006-01-17 2007-07-19 Arvin Technologies, Inc. Exhaust system with cam-operated valve assembly and associated method
AU2007227441B2 (en) * 2006-03-16 2011-09-01 Master Lock Company Llc Padlock
DE102006015893A1 (de) * 2006-04-05 2007-10-11 Daimlerchrysler Ag Gaswechselventilbetätigungsvorrichtung
US7284533B1 (en) * 2006-05-08 2007-10-23 Jacobs Vehicle Systems, Inc Method of operating an engine brake
DE102006037396A1 (de) * 2006-08-10 2008-02-14 Daimler Ag Brennkraftmaschine
EP2079912A4 (en) * 2006-10-27 2011-01-26 Jacobs Vehicle Systems Inc ENGINE BRAKE APPARATUS
WO2008073122A1 (en) * 2006-12-12 2008-06-19 Mack Trucks, Inc. Valve opening arrangement and method
EP2092166B1 (en) 2006-12-12 2012-08-01 Mack Trucks, Inc. Valve opening arrangement and method
EP2171224B1 (en) * 2007-06-26 2012-12-12 Volvo Lastvagnar AB Exhaust valve mechanism for an internal combustion engine
RU2457348C2 (ru) 2007-10-22 2012-07-27 Вольво Ластвагнар Аб Контроль моторного тормоза
DE102008061412A1 (de) * 2008-07-11 2010-01-14 Man Nutzfahrzeuge Ag Hydraulischer Ventil- und EVB-Spielausgleich
US8800531B2 (en) * 2010-03-12 2014-08-12 Caterpillar Inc. Compression brake system for an engine
US20110239967A1 (en) * 2010-03-30 2011-10-06 Gnutti Ltd. Valve bridge
AT510528B1 (de) * 2010-09-23 2012-09-15 Avl List Gmbh Viertakt-brennkraftmaschine mit einer motorbremse
BR112013029941B1 (pt) 2011-05-26 2021-06-01 Jacobs Vehicle Systems, Inc. Sistema e método para acionar as primeira e segunda válvulas de motor
CN103388505B (zh) * 2012-05-09 2016-03-02 上海尤顺汽车部件有限公司 一种双摇臂固链式制动装置
CN103388504B (zh) * 2012-05-09 2016-03-02 上海尤顺汽车部件有限公司 一种固链式专用摇臂制动装置
BR112015006532A2 (pt) * 2012-09-25 2017-09-26 Renault Trucks mecanismo de acionamento de válvula e veículo automotivo equipado com um tal mecanismo de acionamento de válvula
KR101683446B1 (ko) * 2013-12-05 2016-12-07 자콥스 비히클 시스템즈, 인코포레이티드. 엔진 밸브 가동을 위한 절첩 및 연장 메커니즘을 포함하는 장치 및 시스템
WO2018177499A1 (en) * 2017-03-27 2018-10-04 Volvo Truck Corporation Rocker arm for an internal combustion engine
JP7368593B2 (ja) * 2019-08-05 2023-10-24 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 正の力および気筒休止の動作と副バルブ事象との組み合わせ
EP4663928A1 (en) 2024-06-11 2025-12-17 Volvo Truck Corporation Method for controlling an engine compression braking mode of an engine arrangement

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR880701317A (ko) * 1986-05-21 1988-07-26 원본미기재 기체 연료를 사용하는 기관
US4793307A (en) 1987-06-11 1988-12-27 The Jacobs Manufacturing Company Rocker arm decoupler for two-cycle engine retarder
JP3764595B2 (ja) * 1998-12-24 2006-04-12 株式会社日立製作所 エンジン補助ブレーキ装置
JP2002541382A (ja) 1999-04-14 2002-12-03 ディーゼル エンジン リターダーズ，インコーポレイテッド 正動力中に、バルブ・リフト及びバルブ・タイミングを修正するための排気及び吸気ロッカアーム組立体

Also Published As

Publication number Publication date
DE60221878T2 (de) 2008-05-15
SE523849C2 (sv) 2004-05-25
WO2003031778A1 (en) 2003-04-17
EP1442200B1 (en) 2007-08-15
EP1442200A1 (en) 2004-08-04
US20040237932A1 (en) 2004-12-02
JP2005504910A (ja) 2005-02-17
ATE370315T1 (de) 2007-09-15
US6983725B2 (en) 2006-01-10
SE0103388L (sv) 2003-04-12
JP4292078B2 (ja) 2009-07-08
SE0103388D0 (sv) 2001-10-11
DE60221878D1 (de) 2007-09-27

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Legal Events

Date Code Title Description
B11A Dismissal acc. art.33 of ipl - examination not requested within 36 months of filing
B11Y Definitive dismissal - extension of time limit for request of examination expired [chapter 11.1.1 patent gazette]