ES2087613T3 - Un dispositivo para accionar una valvula en un motor de combustion interna. - Google Patents

Un dispositivo para accionar una valvula en un motor de combustion interna.

Info

Publication number
ES2087613T3
ES2087613T3 ES93109506T ES93109506T ES2087613T3 ES 2087613 T3 ES2087613 T3 ES 2087613T3 ES 93109506 T ES93109506 T ES 93109506T ES 93109506 T ES93109506 T ES 93109506T ES 2087613 T3 ES2087613 T3 ES 2087613T3
Authority
ES
Spain
Prior art keywords
valve
cam
internal combustion
combustion engine
closure
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 - Lifetime
Application number
ES93109506T
Other languages
English (en)
Inventor
Renato It Filippi
Francesco Vattaneo
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.)
Centro Ricerche Fiat SCpA
Original Assignee
Centro Ricerche Fiat SCpA
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 Centro Ricerche Fiat SCpA filed Critical Centro Ricerche Fiat SCpA
Application granted granted Critical
Publication of ES2087613T3 publication Critical patent/ES2087613T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/14—Tappets; Push rods
    • F01L1/16—Silencing impact; Reducing wear
    • 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
    • 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
    • F01L13/0031—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 tappet or pushrod length
    • 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
    • F01L2013/0089—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 with means for delaying valve closing

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

LA PARTE (31) DEL PERFIL DE UNA LEVA ASIMETRICA (5) QUE CONTROLA EL CERRAMIENTO DE UNA VALVULA (3) EN UN MOTOR DE COMBUSTION INTERNA SE INCLINA LO SUFICIENTE PARA ASEGURAR QUE, CUANDO LA VELOCIDAD DEL MOTOR EXCEDA UN VALOR LIMITE PREDETERMINADO, LA VALVULA SE CIERRE, SIN CONTACTO ENTRE LA VALVULA Y LA LEVA, DENTRO DE UN PERIODO DE TIEMPO QUE ES SUBSTANCIALMENTE FIJO A MEDIDA QUE VARIA LA VELOCIDAD DEL MOTOR, DE MANERA QUE EL ANGULO DE LA LEVA SE INCREMENTE DESPUES DEL CERRAMIENTO CON UN INCREMENTO EN LA VELOCIDAD DE GIRO DE LA LEVA. UNA VARILLA DE VALVULA (6) PROVISTA CON UNA SUPERFICIE ACTIVA (15), QUE TIENE UNA PARTE PLANA (33) SUBSTANCIALMENTE PERPENDICULAR A LA LINEA DE MOVIMIENTO (D) DE LA VARILLA DE VALVULA (6) Y QUE TIENE UNA PARTE CURVADA (35) CON UN RADIO DE CURVATURA UNIFORME (R3), QUE ESTA CONECTADA A LA PARTE PLANA (33), SE INTERPONE ENTRE LA LEVA Y LA VALVULA, DE MANERA QUE LA SUPERFICIE ACTIVA (15) TENGA UNA ZONA CONVEXA QUE MIRE HACIA LA LEVA (5).
ES93109506T 1992-06-19 1993-06-15 Un dispositivo para accionar una valvula en un motor de combustion interna. Expired - Lifetime ES2087613T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITTO920525A IT1257904B (it) 1992-06-19 1992-06-19 Dispositivo di comando di una valvola di un motore a combustione interna.

Publications (1)

Publication Number Publication Date
ES2087613T3 true ES2087613T3 (es) 1996-07-16

Family

ID=11410547

Family Applications (1)

Application Number Title Priority Date Filing Date
ES93109506T Expired - Lifetime ES2087613T3 (es) 1992-06-19 1993-06-15 Un dispositivo para accionar una valvula en un motor de combustion interna.

Country Status (5)

Country Link
US (1) US5309872A (es)
EP (1) EP0574867B1 (es)
DE (1) DE69302047T2 (es)
ES (1) ES2087613T3 (es)
IT (1) IT1257904B (es)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2275096B (en) * 1993-02-15 1996-05-22 Unisia Jecs Corp Valve control device for internal combustion device
IT1273185B (it) * 1994-05-06 1997-07-07 Fiat Auto Spa Dispositivo di comando di una valvola di un motore a combustione interna con dispositivo di recupero del gioco della punteria
JP3435612B2 (ja) * 1994-06-09 2003-08-11 日産自動車株式会社 内燃機関の弁装置
JPH084505A (ja) * 1994-06-17 1996-01-09 Yamaha Motor Co Ltd エンジンの動弁装置
IT1268193B1 (it) * 1994-12-22 1997-02-21 Fiat Auto Spa Dispositivo di comando di una valvola di un motore a combustione interna
DE19624230C1 (de) * 1996-06-18 1997-07-10 Porsche Ag Ventilsteuerung für Brennkraftmaschinen
DE19641418A1 (de) * 1996-10-08 1998-04-09 Bayerische Motoren Werke Ag Steuernocken für eine ventilgesteuerte Brennkraftmaschine
DE60004412T2 (de) * 1999-02-05 2004-06-24 Unisia Jecs Corp., Atsugi Variable Ventilsteuerungseinrichtung für eine Brennkraftmaschine
NO316653B1 (no) * 2000-09-15 2004-03-22 Nat Oilwell Norway As Anordning ved stempelmaskin og fremgangsmate til bruk ved styring av stemplene
ITTO20020234A1 (it) * 2002-03-15 2003-09-15 Fiat Ricerche Motore pluricilindrico a combustione interna con dispositivo idraulico a controllo elettronico per l'azionamento variabile delle valvole e d
WO2004074644A2 (en) * 2003-02-14 2004-09-02 Jesel, Inc. Valve train and cam lobe
AT413853B (de) * 2004-03-09 2006-06-15 Avl List Gmbh Ventilbetätigungseinrichtung
US7600337B2 (en) * 2005-09-13 2009-10-13 Taser International, Inc. Systems and methods for describing a deployment unit for an electronic weapon
US8256461B1 (en) * 2009-01-30 2012-09-04 Aspen Research, Ltd Distribution valve and cam mechanism
CN102536372A (zh) * 2010-12-15 2012-07-04 朱譞晟 连续可变气门正时的非对称正时设计方法
CN102661223B (zh) * 2012-05-02 2013-10-30 哈尔滨工程大学 一种靴形型线凸轮
GB2519600B (en) * 2013-10-28 2018-09-12 Jaguar Land Rover Ltd Gasoline Engine Knock Control
GB2563064B (en) * 2017-06-02 2022-05-18 Camcon Auto Ltd Valve actuators
CN109736914A (zh) * 2018-12-11 2019-05-10 江苏三能动力总成有限公司 一种发动机凸轮轴系统

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1357151A (fr) * 1963-03-07 1964-04-03 Le Moteur Moderne S A R L Poussoir d'admission de moteurs à retombée hydraufique
US3272189A (en) * 1965-05-03 1966-09-13 Eaton Yale & Towne Camshaft for internal combustion engine valve gear
FR2359967A1 (fr) * 1976-07-29 1978-02-24 Chrysler France Procede et dispositif de commande de soupape pour moteur a combustion interne
FR2448032A1 (fr) * 1979-02-05 1980-08-29 Semt Procede pour ameliorer le rendement d'un moteur a combustion interne notamment suralimente
JPS5943911A (ja) * 1982-09-03 1984-03-12 Toyota Motor Corp 内燃機関用カム
EP0243339B1 (de) * 1986-04-21 1992-06-03 Robert Bosch Ag Nockenwelle
JPS63192908A (ja) * 1987-02-05 1988-08-10 Mazda Motor Corp エンジンの動弁装置
US4942854A (en) * 1988-03-03 1990-07-24 Honda Giken Kogyo Kabushiki Kaisha Valve operating device for use in internal combustion engine
DE3913530A1 (de) * 1988-05-10 1989-11-23 Volkswagen Ag Einrichtung zur ventilbetaetigung
IT1240107B (it) * 1990-02-16 1993-11-27 Ferrari Spa Sistema di distribuzione variabile, in particolare per un motore endotermico.
US5136887A (en) * 1990-05-29 1992-08-11 Clemson University Variable valve actuating apparatus
GB9018558D0 (en) * 1990-08-23 1990-10-10 Ricardo Group Plc Valve gear for internal combustion engines

Also Published As

Publication number Publication date
DE69302047D1 (de) 1996-05-09
DE69302047T2 (de) 1996-08-29
EP0574867B1 (en) 1996-04-03
US5309872A (en) 1994-05-10
IT1257904B (it) 1996-02-16
ITTO920525A1 (it) 1993-12-19
ITTO920525A0 (it) 1992-06-19
EP0574867A1 (en) 1993-12-22

Similar Documents

Publication Publication Date Title
ES2087613T3 (es) Un dispositivo para accionar una valvula en un motor de combustion interna.
EP0335924B1 (en) Poppet valve assembly with apertures
US4763802A (en) Bottle pump
ES545075A0 (es) Instalacion para la limitacion de la presion dinamica de un freno-motor de escape
US3554180A (en) Valve stem seal
US4502428A (en) Lash adjuster with follower body retainer
US3861557A (en) Vent cap
US5501121A (en) Camshaft arrangement having a cam mounted for limited angular motion
US5623898A (en) Variable duration hydraulic valve lifters
ES2010998B3 (es) Dispositivo de seguridad que forma parte de un mecanismo para bloquear el capo de un vehiculo de motor impidiendo su abertura.
KR100216443B1 (ko) 자동차의 엔진밸브의 회전장치
JPS59134164A (ja) 圧力キヤツプ
JPH047372Y2 (es)
JPS60233305A (ja) カムを使つた回転弁型原動機
KR200231875Y1 (ko) 자동차용 흡배기 밸브의 태핏 장착구조
JPH0443373Y2 (es)
FR2395910A1 (fr) Perfectionnements aux bouchons de reservoir de combustible
JPH045812Y2 (es)
KR100508169B1 (ko) 필러 캡의 테더
SU708098A1 (ru) Предохранительное устройство
JPH02100923U (es)
KR200171625Y1 (ko) 블로우 바이 가스 환원 장치용 pcv밸브
GB1422334A (es)
GB1528632A (en) Control apparatus adapted to be interposed between an intake passage of an internal combustion engine and a vacuum actuator
KR19980041896U (ko) 자동차용 밸브 스프링 시트

Legal Events

Date Code Title Description
FG2A Definitive protection

Ref document number: 0574867

Country of ref document: ES