BRPI0705979A2 - dispositivo de frenagem por descompressão em motores endotérmicos - Google Patents

dispositivo de frenagem por descompressão em motores endotérmicos

Info

Publication number
BRPI0705979A2
BRPI0705979A2 BRPI0705979-5A BRPI0705979A BRPI0705979A2 BR PI0705979 A2 BRPI0705979 A2 BR PI0705979A2 BR PI0705979 A BRPI0705979 A BR PI0705979A BR PI0705979 A2 BRPI0705979 A2 BR PI0705979A2
Authority
BR
Brazil
Prior art keywords
braking device
levers
decompression braking
bushings
endothermic
Prior art date
Application number
BRPI0705979-5A
Other languages
English (en)
Inventor
Pietro Bianchi
Original Assignee
Iveco Spa
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 Iveco Spa filed Critical Iveco Spa
Publication of BRPI0705979A2 publication Critical patent/BRPI0705979A2/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
    • 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
    • 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
    • F01L13/0015—Modifications 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
    • F01L13/0021—Modifications 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
    • F01L13/0026—Modifications 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

DISPOSITIVO DE FRENAGEM POR DESCOMPRESSãO EM MOTORES ENDOTéRMICOS. Dispositivo de frenagem por descompressão em um motor endotérmico (1) do tipo que compreende uma cabeça com, pelo menos, um eixo de alavanca (2), em que uma pluralidade de buchas excêntricas (31) de uma pluralidade correspondente de alavancas (3) são rotacional e excentricamente montadas, cada alavanca (3) sendo fornecida com um tucho (4) para atuar uma ou mais válvulas de escape (5), e um eixo de comando de válvulas (30) que aciona a referida pluralidade de alavancas (3), o dispositivo sendo caracterizado pelo fato de que compreende um membro de acionamento (6, 61) montado externamente ao referido eixo de alavanca (2) e ligado às referidas buchas por meio dos meios de articulação (8, 9, 10), a disposição sendo tal que uma respectiva rotação das referidas buchas (2) de um valor angular pré-determinado (cL) com deslocamento conseqúente do eixo de articulação das referidas alavancas (3) corresponde a cada excursão do referido membro de acionamento (6, 61).
BRPI0705979-5A 2006-11-28 2007-11-28 dispositivo de frenagem por descompressão em motores endotérmicos BRPI0705979A2 (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT002289A ITMI20062289A1 (it) 2006-11-28 2006-11-28 Dispositivo per la frenatura per decompressione in motori endotermici

Publications (1)

Publication Number Publication Date
BRPI0705979A2 true BRPI0705979A2 (pt) 2009-07-21

Family

ID=37774273

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0705979-5A BRPI0705979A2 (pt) 2006-11-28 2007-11-28 dispositivo de frenagem por descompressão em motores endotérmicos

Country Status (10)

Country Link
US (1) US7992540B2 (pt)
EP (1) EP1927735B1 (pt)
CN (1) CN101191429B (pt)
AR (1) AR063908A1 (pt)
AT (1) ATE486199T1 (pt)
BR (1) BRPI0705979A2 (pt)
DE (1) DE602007010071D1 (pt)
ES (1) ES2355277T3 (pt)
IT (1) ITMI20062289A1 (pt)
RU (1) RU2455500C2 (pt)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20062288A1 (it) * 2006-11-28 2008-05-29 Iveco Spa Motore a combustione interna dotato di sistema per la variazione dell'apertura delle valvole e veicolo dotato di tale motore
JP5171427B2 (ja) * 2008-06-23 2013-03-27 ダイハツ工業株式会社 内燃機関におけるカム角度センサの取付け装置
IT1397350B1 (it) 2009-06-11 2013-01-10 Streparava S P A Gruppo di azionamento per un freno motore di un autoveicolo.
EP2386729A1 (en) 2010-05-10 2011-11-16 Fiat Powertrain Technologies S.p.A. Multi-cylinder internal combustion engine with variable actuation of the engine valves
CN103089366B (zh) * 2013-01-18 2015-06-10 奇瑞汽车股份有限公司 一种发动机中的凸轮组件、发动机制动装置以及汽车
US10895174B2 (en) * 2016-12-05 2021-01-19 Eaton Intelligent Power Limited Heavy duty variable valve actuation
IT201600130806A1 (it) 2016-12-23 2018-06-23 Fpt Motorenforschung Ag Metodo per eseguire un riscaldamento di un sistema di post trattamento di un motore a combustione interna ed il motore a combustione interna predisposto per attuare detto metodo
EP4256181A4 (en) 2020-12-03 2024-11-20 Jacobs Vehicle Systems, Inc. ROTARY ACTUATOR SYSTEM FOR CONTROLLING VALVE ACTUATION IN AN INTERNAL COMBUSTION ENGINE

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US1812787A (en) 1929-06-05 1931-06-30 Ora M Doolittle Braking attachment for vehicle motors
US2880711A (en) 1958-02-05 1959-04-07 Henry A Roan Variable valve timing mechanism for engines
DE1964020U (de) * 1967-04-15 1967-07-13 Fichtel & Sachs Ag Dekompressionsvorrichtung fuer ventilgesteuerte brennkraftmaschinen, insbesondere einspritz-brennkraftmaschinen.
US4664233A (en) * 1984-09-27 1987-05-12 Honda Giken Kogyo Kabushiki Kaisha Antilock brake device for vehicles
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IT1255447B (it) 1991-11-08 1995-10-31 Iveco Fiat Motore provvisto di un dispositivo di frenatura continua, particolarmente per un veicolo industriale.
US5611308A (en) * 1996-02-06 1997-03-18 Caterpillar Inc. Apparatus for interconnecting an actuator and an exhaust valve opening member
KR100255289B1 (ko) * 1996-07-12 2000-05-01 도오다 고오이찌로 자동차내연기관의감압브레이크장치
AU694703B2 (en) * 1996-10-11 1998-07-23 Mitsubishi Fuso Truck And Bus Corporation Engine-brake assisting system
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JPH10288018A (ja) * 1997-04-17 1998-10-27 Unisia Jecs Corp エンジンブレーキ装置
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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
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US6386160B1 (en) * 1999-12-22 2002-05-14 Jenara Enterprises, Ltd. Valve control apparatus with reset
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US6622669B1 (en) * 2000-10-18 2003-09-23 Ford Global Technologies, Llc Hydraulic circuit having accumulator for unlocking variable compression ratio connecting rod locking mechanisms-II
US6497203B1 (en) * 2000-10-18 2002-12-24 Ford Global Technologies, Inc. Hydraulic circuit for unlocking variable compression ratio connecting rod locking mechanisms
US6354265B1 (en) * 2000-10-20 2002-03-12 Eaton Corporation Electro-mechanical latching rocker arm engine brake
JP3828774B2 (ja) * 2001-10-01 2006-10-04 日野自動車株式会社 デコンプレッション装置
US6701885B2 (en) * 2002-05-13 2004-03-09 General Motors Corporation Engine connecting rod mechanism for cylinder pressure control
JP3986371B2 (ja) * 2002-06-07 2007-10-03 株式会社日立製作所 内燃機関のバルブタイミング制御装置
US7051852B2 (en) * 2002-07-26 2006-05-30 Kevin Maret Suspension restraint devices
JP4008303B2 (ja) * 2002-08-05 2007-11-14 日野自動車株式会社 デコンプレッションブレーキ
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SE525678C2 (sv) * 2003-08-25 2005-04-05 Volvo Lastvagnar Ab Anordning vid förbränningsmotor
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JP4169716B2 (ja) 2004-03-24 2008-10-22 株式会社日立製作所 可変動弁装置のアクチュエータ
KR101282840B1 (ko) * 2004-05-06 2013-07-05 자콥스 비히클 시스템즈, 인코포레이티드. 엔진 밸브 작동 장치 및 방법

Also Published As

Publication number Publication date
ES2355277T3 (es) 2011-03-24
ATE486199T1 (de) 2010-11-15
US7992540B2 (en) 2011-08-09
EP1927735A1 (en) 2008-06-04
DE602007010071D1 (de) 2010-12-09
RU2007144118A (ru) 2009-06-10
CN101191429A (zh) 2008-06-04
CN101191429B (zh) 2012-09-05
ITMI20062289A1 (it) 2008-05-29
EP1927735B1 (en) 2010-10-27
US20080121477A1 (en) 2008-05-29
RU2455500C2 (ru) 2012-07-10
AR063908A1 (es) 2009-02-25

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Legal Events

Date Code Title Description
B03A Publication of a patent application or of a certificate of addition of invention [chapter 3.1 patent gazette]
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]
B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]