EP1568849B1 - Culbuteur pour système de distribution - Google Patents

Culbuteur pour système de distribution Download PDF

Info

Publication number
EP1568849B1
EP1568849B1 EP04100729A EP04100729A EP1568849B1 EP 1568849 B1 EP1568849 B1 EP 1568849B1 EP 04100729 A EP04100729 A EP 04100729A EP 04100729 A EP04100729 A EP 04100729A EP 1568849 B1 EP1568849 B1 EP 1568849B1
Authority
EP
European Patent Office
Prior art keywords
piston
rocker arm
arm assembly
pressure surface
area
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
EP04100729A
Other languages
German (de)
English (en)
Other versions
EP1568849A1 (fr
Inventor
Axel Berndorfer
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.)
Delphi Technologies Inc
Original Assignee
Delphi Technologies Inc
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 Delphi Technologies Inc filed Critical Delphi Technologies Inc
Priority to DE602004003788T priority Critical patent/DE602004003788T2/de
Priority to EP04100729A priority patent/EP1568849B1/fr
Priority to AT04100729T priority patent/ATE348947T1/de
Publication of EP1568849A1 publication Critical patent/EP1568849A1/fr
Application granted granted Critical
Publication of EP1568849B1 publication Critical patent/EP1568849B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F01L1/20—Adjusting or compensating clearance
    • F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
    • F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
    • 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

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)

Claims (8)

  1. Assemblage de culbuteur pour activer de manière variable une soupape à gaz dans un moteur à combustion interne, ledit assemblage de culbuteur (10) ayant au moins deux configurations pour faire varier sa capacité de levée de soupapes, ledit assemblage de culbuteur comprenant
    un élément de verrouillage (48) mobile entre une première position pour donner une première configuration d'assemblage de culbuteur et une deuxième position pour donner une deuxième configuration d'assemblage de culbuteur ;
    un moyen d'actionnement de verrouillage (30) comprenant un piston (34) agencé en va et vient dans un alésage de piston (36) et couplé audit élément de verrouillage (48) pour déplacer ledit élément de verrouillage de ladite première position à ladite deuxième position, dans lequel ledit piston (34) a une tête de piston avec une surface de pression (42) définissant avec une paroi de côté latéral (38) et une paroi d'extrémité (40) dudit alésage de piston (36) une chambre hydraulique (44), ladite chambre hydraulique (44) comprenant une entrée (46) pour un fluide hydraulique sous pression de manière à déplacer ledit piston (34) sous l'action de la pression hydraulique ; et
    dans lequel ladite tête de piston comprend un axe en saillie (54) s'étendant vers ladite paroi d'extrémité (40) de manière à former une surface de pression étagée ;
    ce par quoi lesdites chambre hydraulique (44) et surface de pression (42) de piston sont conçues de telle manière que, dans une première position dudit piston (34), seule une première aire de ladite surface de pression (42) est exposée au fluide hydraulique sous pression et, à partir d'une deuxième position dudit piston (34), une deuxième aire de ladite surface de pression (42), plus grande que ladite première aire, est exposée au fluide hydraulique sous pression ;
    caractérisée en ce que
    ladite entrée (46) pour le fluide hydraulique sous pression est agencée dans ladite paroi d'extrémité (40) dudit alésage de piston (38) ; et
    ledit axe en saillie (54) obstrue ladite entrée (46) lorsque ledit piston (34) est dans ladite première position
  2. Assemblage de culbuteur selon la revendication 1, caractérisé en ce que ladite première aire représente une portion mineure de ladite surface de pression (42) et ladite deuxième aire représente une portion prédominante de ladite surface de pression (42)
  3. Assemblage de culbuteur selon la revendication 1 ou 2, caractérisé en ce que ladite deuxième aire correspond à l'aire totale de ladite surface de pression (42), ladite première aire comprise.
  4. Assemblage de culbuteur selon l'une quelconque des revendications précédentes, caractérisé par un culbuteur principal (12) ayant un corps (14) comprenant un raccord (18) pour engager un pivot (19) à une première extrémité et ayant un moyen d'interface (20) pour engager une tige de soupape (21) à une deuxième extrémité dudit corps (14).
  5. Assemblage de culbuteur selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit moyen d'actionnement de verrouillage (30) est prévu dans ledit corps (14) de culbuteur principal.
  6. Assemblage de culbuteur selon la revendication 4 et 5, caractérisé en ce que
    un canal d'admission (49) connecte ledit raccord (18) à ladite entrée (46) dans ladite paroi d'extrémité (40) de ladite chambre hydraulique (44) ; et
    ledit pivot (19) est un dispositif hydraulique de rattrapage de jeu ayant une partie de nez engageant ledit raccord (18) et prévu avec un alésage pour ledit fluide hydraulique
  7. Assemblage de culbuteur selon l'une quelconque des revendications précédentes, caractérisé par un moyen de ressort (50) pour précontraindre ledit élément de verrouillage (48) dans une direction opposée à la direction dans laquelle ledit piston (34) est déplacé du fait de l'action du fluide hydraulique sur ladite surface de pression (42) du piston.
  8. Assemblage de culbuteur selon l'une quelconque des revendications précédentes, caractérisé par deux culbuteurs latéraux, un de chaque côté dudit culbuteur principal (12), dans laquelle ledit élément de verrouillage (48), dans sa deuxième position, engage les surfaces de verrouillage en coopération desdits culbuteurs latéraux
EP04100729A 2004-02-25 2004-02-25 Culbuteur pour système de distribution Expired - Lifetime EP1568849B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE602004003788T DE602004003788T2 (de) 2004-02-25 2004-02-25 Kipphebelvorrichtung für einen Ventiltrieb
EP04100729A EP1568849B1 (fr) 2004-02-25 2004-02-25 Culbuteur pour système de distribution
AT04100729T ATE348947T1 (de) 2004-02-25 2004-02-25 Kipphebelvorrichtung für einen ventiltrieb

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04100729A EP1568849B1 (fr) 2004-02-25 2004-02-25 Culbuteur pour système de distribution

Publications (2)

Publication Number Publication Date
EP1568849A1 EP1568849A1 (fr) 2005-08-31
EP1568849B1 true EP1568849B1 (fr) 2006-12-20

Family

ID=34746063

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04100729A Expired - Lifetime EP1568849B1 (fr) 2004-02-25 2004-02-25 Culbuteur pour système de distribution

Country Status (3)

Country Link
EP (1) EP1568849B1 (fr)
AT (1) ATE348947T1 (fr)
DE (1) DE602004003788T2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012203702A1 (de) * 2012-03-08 2013-09-12 Man Diesel & Turbo Se Ventiltrieb für eine Brennkraftmaschine und Brennkraftmaschine
CN108167044B (zh) * 2017-12-28 2020-09-29 潍柴动力股份有限公司 一种气门摇臂总成、可变配气机构及发动机

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6397815A (ja) * 1986-10-13 1988-04-28 Honda Motor Co Ltd 内燃機関の動弁装置
DE3800347A1 (de) * 1987-01-08 1988-09-29 Honda Motor Co Ltd Ventilbetaetigungsvorrichtung in einer brennkraftmaschine
CA1323533C (fr) * 1987-12-28 1993-10-26 Toshihiro Oikawa Systeme de soupapes pour moteurs a combustion interne
DE4317638C1 (de) * 1993-05-27 1994-08-18 Audi Ag Ventilbetätigungsvorrichtung für eine Mehrzylinder-Brennkraftmaschine
US6668779B2 (en) * 2002-05-08 2003-12-30 Delphi Technologies, Inc. Two-step finger follower rocker arm assembly
DE10220904B4 (de) * 2002-05-10 2005-04-07 Meta Motoren- Und Energie-Technik Gmbh Vorrichtung zum Verstellen des Hubs eines von einer Nockenwelle betätigten Ventils

Also Published As

Publication number Publication date
EP1568849A1 (fr) 2005-08-31
DE602004003788D1 (de) 2007-02-01
DE602004003788T2 (de) 2007-10-11
ATE348947T1 (de) 2007-01-15

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