EP0889205B1 - Culbuteur pour commande de soupape de moteur à combustion interne - Google Patents

Culbuteur pour commande de soupape de moteur à combustion interne Download PDF

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Publication number
EP0889205B1
EP0889205B1 EP98111276A EP98111276A EP0889205B1 EP 0889205 B1 EP0889205 B1 EP 0889205B1 EP 98111276 A EP98111276 A EP 98111276A EP 98111276 A EP98111276 A EP 98111276A EP 0889205 B1 EP0889205 B1 EP 0889205B1
Authority
EP
European Patent Office
Prior art keywords
shaft
axis
rocker
hub
rocker arm
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
EP98111276A
Other languages
German (de)
English (en)
Other versions
EP0889205A1 (fr
Inventor
Paul Dipl.-Ing. Breidenbach
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.)
Adam Opel GmbH
Original Assignee
Adam Opel GmbH
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 Adam Opel GmbH filed Critical Adam Opel GmbH
Publication of EP0889205A1 publication Critical patent/EP0889205A1/fr
Application granted granted Critical
Publication of EP0889205B1 publication Critical patent/EP0889205B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/0043—Arrangements of mechanical drive elements
    • F02F7/0046—Shape of casings adapted to facilitate fitting or dismantling of engine parts
    • 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
    • F01L1/047—Camshafts
    • F01L1/053—Camshafts overhead 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
    • F01L1/185—Overhead end-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
    • F01L2810/00—Arrangements solving specific problems in relation with valve gears
    • F01L2810/02—Lubrication
    • 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
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder

Definitions

  • the invention relates to an arrangement of rocker arms or Rocker arms for valve control of internal combustion engines according to the preamble of claim 1.
  • rocker arms shows, for example DE 35 03 313.
  • rocker arms can outside of the cylinder head with the continuous Axle pre-assembled and then together with this Bearing blocks are attached to the cylinder head.
  • the cylinder head is a has continuous bearing bore for the axis in which the axis from one end of the cylinder head is inserted, the rocker arms gradually for thread each cylinder onto the axle.
  • rocker arm or rocker arm in the cylinder head of internal combustion engines to be stored individually. So is z. B. according to DE 42 34 868 a rocker arm on it Bearing side only with a ball socket on an inside Cylinder head housing held ball pin. An active connection between several rocker arms within a cylinder head is in such a design hardly feasible.
  • Such individual bearings can be the assembly effort reduce the valve timing. But then you are not advantageously applicable if several rocker arms or Rocker arms are provided for the purpose of valve shutdown pressurized oil is applied via a common axis should be.
  • the invention has for its object an arrangement of rocker arms or rocker arms for valve control to create in the cylinder head of internal combustion engines that a single installation or removal of each rocker arm or Rocker arm without affecting the other rocker arm
  • the rocker arm permits and thus a rational assembly enables and with which all rocker arms or Rocker arms are held on a common axis and can be supplied with oil through them.
  • the common axis is a row of rocker arms or rocker arms in the cylinder head of the internal combustion engine stored so that they are in the bearing bore is rotatable, but in a predetermined position opposite a twisting movement can be determined. It is the functional axis aligned so that its cylindrical Side in the direction of force application the hub body of the rocker arm or rocker arm aligned is.
  • cylindrical bearing surface of the hub body to the cylindrical surface of the axis is adapted, can between the cylindrical surfaces of the axle and the hub body form a load-bearing oil film in the usual way. alternative this can also be limited to the cylindrical bearing surfaces, a rolling bearing may be provided, such as this z. B. without flattening of the axis also with DE 35 03 313 is proposed.
  • the hub bodies of rocker arms or rocker arms are on theirs the side facing away from the operating force with a hub opening through which a sector of is cut out of the hub circumference by less than 180 °.
  • a Hub opening created by this recess impaired the bearing behavior of the hub body not because due to the forces from the valve train work in one direction.
  • a cylinder head 1 of an internal combustion engine forms together with a piston, not shown, a combustion chamber 2, which is followed by an intake duct 3 and an exhaust duct 4.
  • the intake duct 3 is through an inlet valve 5, and the outlet channel 4 can be closed by an outlet channel 6.
  • the invention is based on the example below of the inlet valve 5 and its valve actuation parts shown.
  • the inlet valve 5 is in its by the valve spring 7 Closed position held as shown.
  • a rocker arm 8 lies with its end 9, in which there is a hydraulic Valve clearance compensation element 10 is located on the upper end of the shaft 11 of the inlet valve 5.
  • the Rocker arm 8 has a hub body 12, which is is supported on an axle 13 mounted in the cylinder head 1. Between the hub body 12 and the end 9 of the rocker arm 8, a roller 14 is rotatably arranged on the rocker arm 8, on which a cam 15 on the cylinder head 1 mounted camshaft 16 acts and so the inlet valve 5 can open.
  • the axis 13 has a running along its central axis Bore 17 on, of the channels 18 to be connected radially Oil channels 19 in the body of the rocker arm 8 for supplying the valve clearance compensation elements 10 to lead.
  • the axis 13 is parallel to the central axis with a Provide flattening 20.
  • the flattening 20 is in the Cross section of the axis 13 through an angle of approximately 120 ° limited.
  • the hub body 12 of the rocker arm 8 has a hub opening 21, which has a sector of approximately 120 ° of the hub circumference spares.
  • the axis 13 is in its bearing bore in the cylinder head 1 set so that its remaining cylindrical surface part with the remaining cylindrical surface of the hub body 12 is in contact.
  • the so overlapping cylindrical surfaces transmit the operating forces between the rocker arm 8 and the axle 13. Between a load-bearing lubricating film can form on them. Between that originating from the bore 17 of the axis 13 Channel 18 and the oil channel 19 in the rocker arm 8 is there is a uniform oil pressure, one Leakage between the cylindrical surfaces remains low and is irrelevant to motor operation.
  • the axis 13 in its bearing bore be rotated by about 90 ° so that they face each other the rocker arm 8 assumes a position as shown in FIG. 2 is shown.
  • the measure between the two outer boundaries 22 of the hub opening 21 is small Amount greater than the dimension between the flattening 20 and the opposite outer circumference on the axis 13. The hub opening 21 can thus be from the functional position twisted axis 13 placed over or be removed.
  • the invention is not restricted to the exemplary embodiment, but in the same way for the arrangement of a Rocker arm applicable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Claims (5)

  1. Agencement de culbuteurs ou de linguets pour la commande de soupapes de moteurs à combustion interne, comportant un axe continu monté dans la culasse du moteur à combustion interne pour supporter une rangée de culbuteurs ou de linguets, ainsi que des corps de moyeux sur les culbuteurs et les linguets, par lesquels lesdits culbuteurs et linguets sont montés pivotants sur l'axe, caractérisé en ce que l'axe (13) présente une section transversale globalement circulaire avec un plat (20), les corps de moyeux (12) sont pourvus d'une ouverture de moyeu (21) du côté éloigné à la force d'appui en fonctionnement, l'angle inscrit de palier restant du corps de moyeu (12) et l'angle inscrit de cercle restant de la section de l'axe (13) sont supérieurs à 180° et l'axe (13) pouvant tourner et être immobilisé dans ses supports.
  2. Agencement selon la revendication 1, caractérisé en ce que l'axe (13) est muni d'un ou de plusieurs perçages (17) parallèles à l'axe et de canaux (18) pour l'alimentation en huile, qui s'étendent à partir de ceux-ci radialement en direction des corps de moyeux (12).
  3. Agencement selon la revendication 2, caractérisé en ce que le culbuteur ou le linguet (8) porte un élément (10) hydraulique de rattrapage du jeu de soupape, à l'une de ses extrémités (9).
  4. Agencement selon une des revendications 1 à 3, caractérisé en ce que le culbuteur ou le linguet (8) est muni d'un galet (14) en tant que suiveur de came.
  5. Agencement selon une des revendications 1 à 4, caractérisé en ce que le culbuteur ou le linguet (8) est réalisé en deux parties et est équipé d'un dispositif actionné hydrauliquement pour désactiver la soupape.
EP98111276A 1997-07-04 1998-06-18 Culbuteur pour commande de soupape de moteur à combustion interne Expired - Lifetime EP0889205B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19728533A DE19728533A1 (de) 1997-07-04 1997-07-04 Anordnung von Kipphebeln oder Schlepphebeln für die Ventilsteuerung von Brennkraftmaschinen
DE19728533 1997-07-04

Publications (2)

Publication Number Publication Date
EP0889205A1 EP0889205A1 (fr) 1999-01-07
EP0889205B1 true EP0889205B1 (fr) 2002-05-15

Family

ID=7834601

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98111276A Expired - Lifetime EP0889205B1 (fr) 1997-07-04 1998-06-18 Culbuteur pour commande de soupape de moteur à combustion interne

Country Status (3)

Country Link
EP (1) EP0889205B1 (fr)
AT (1) ATE217684T1 (fr)
DE (2) DE19728533A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPP996099A0 (en) 1999-04-23 1999-05-20 Silverbrook Research Pty Ltd A method and apparatus(sprint01)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1229334B (de) * 1960-12-07 1966-11-24 Ford Werke Ag Kipphebelanordnung fuer die Ventilsteuerung von Brennkraftmaschinen
JPS58172409A (ja) * 1982-04-02 1983-10-11 Nissan Motor Co Ltd 内燃機関の動弁装置
FR2542372B1 (fr) * 1983-03-08 1987-01-23 Mitsubishi Motors Corp Culbuteur et son procede de fabrication
US4497307A (en) * 1984-02-03 1985-02-05 General Motors Corporation Integral rocker arm hydraulic lifter and bearing assembly
DE4234868C2 (de) 1992-10-16 1999-10-28 Schaeffler Waelzlager Ohg Verfahren zur Herstellung eines Schlepp- oder Kipphebels
DE19535498A1 (de) * 1995-09-25 1997-03-27 Audi Ag Achse zur Lagerung schwenkbarer Bauteile

Also Published As

Publication number Publication date
DE19728533A1 (de) 1999-01-07
EP0889205A1 (fr) 1999-01-07
DE59804116D1 (de) 2002-06-20
ATE217684T1 (de) 2002-06-15

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