EP0197246A2 - Dispositif de compensation du jeu dans la commande de soupapes - Google Patents

Dispositif de compensation du jeu dans la commande de soupapes Download PDF

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Publication number
EP0197246A2
EP0197246A2 EP86100893A EP86100893A EP0197246A2 EP 0197246 A2 EP0197246 A2 EP 0197246A2 EP 86100893 A EP86100893 A EP 86100893A EP 86100893 A EP86100893 A EP 86100893A EP 0197246 A2 EP0197246 A2 EP 0197246A2
Authority
EP
European Patent Office
Prior art keywords
valve
membrane
cylindrical
lash adjuster
component
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.)
Granted
Application number
EP86100893A
Other languages
German (de)
English (en)
Other versions
EP0197246A3 (en
EP0197246B1 (fr
Inventor
Hartmut Dr. Treiber
Hans Deuring
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.)
Goetze GmbH
Original Assignee
Goetze 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 Goetze GmbH filed Critical Goetze GmbH
Priority to AT86100893T priority Critical patent/ATE51934T1/de
Publication of EP0197246A2 publication Critical patent/EP0197246A2/fr
Publication of EP0197246A3 publication Critical patent/EP0197246A3/de
Application granted granted Critical
Publication of EP0197246B1 publication Critical patent/EP0197246B1/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
    • F01L1/245—Hydraulic tappets
    • F01L1/25—Hydraulic tappets between cam and valve stem
    • 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
    • F01L2309/00—Self-contained lash adjusters

Definitions

  • the invention relates to a valve lash adjuster, in particular for valves of internal combustion engines, with a valve cup preferably arranged on the side of the camshaft, a valve lash compensation element provided within the valve cup and interacting with the valve tappet, and an elastic membrane sealing the area filled with an incompressible medium within the valve cup.
  • DE-OS 25 17 370 discloses a hydraulic lash adjuster, in particular for controlling the engine valves of internal combustion engines.
  • An approximately U-shaped valve cup made of cast material interacts with the camshaft and cooperates radially on the inside with an axially displaceable piston which delimits a pressure chamber enclosed within the valve cup.
  • a number of individual components forming the actual valve lash compensation element are arranged within the pressure chamber.
  • the pressure chamber which is completely filled with a hydraulic medium, is sealed by means of an essentially tubular membrane which extends axially between the valve cup and the piston.
  • valve clearance compensation element consists of several components, which must also be assembled individually. Such systems are too expensive for cup tappets (closed systems) that are in development or not usable at all. Since various design approaches are specified for the new systems, the membranes mentioned in the prior art cannot be used as sealing elements. In addition, cast components are relatively heavy and do not necessarily increase the overall weight of the unit, which not least has a negative effect on pricing.
  • the object on which the invention is based is to find a way of sealing cup tappets of this type with closed systems, which makes it possible to compensate for temperature increases and changes in volume of the medium and / or wear.
  • the seal can transmit the torque exerted by the valve cup to the valve.
  • a weight-optimized valve lash adjuster is to be created for reasons of competition.
  • valve cup is formed from a cylindrical and a disc-shaped component, both of which are positively connected to one another, the membrane extending essentially radially between the cylindrical component of the valve cup and the valve clearance compensation element.
  • the two components of the valve cup consist of sheet metal.
  • the cylindrical component in the region on the camshaft side with a circumferential, radially inwardly directed collar and the circular component in the region of its outer peripheral surface with a circumferential bead which extends in the direction of the membrane .
  • the disc-shaped component can be pressed axially into the cylindrical component as a result of a covering in the manner of a snap connection.
  • the membrane is provided in the area of the bead of the round-shaped component with a sealing bead, preferably under axial pretension.
  • the membrane can be connected to the cylindrical component of the valve cup by vulcanization, or it can be fixed in a position-oriented manner within the cylindrical component, for example by means of further stiffening elements by radial and optionally also axial clamping.
  • the version to be selected should be made dependent on the application.
  • the inner circumferential region of the membrane receiving the valve clearance compensation element in a metallically reinforced manner.
  • the metal part can here preferably be essentially cylindrical and be connected to the membrane by vulcanization.
  • the vulcanized metal part preferably faces the oil end facing the space has a radially inward approach, which in the installed state serves as an axial stop for the valve lash adjuster.
  • the inner peripheral surface of the membrane facing the valve clearance compensation element is provided with a corrugated profile running in the axial direction. The valve clearance compensation element can thus be pressed axially into the membrane up to the attachment of the metal part, further radial approaches for lateral guidance of the valve clearance compensation element being eliminated.
  • the sealing takes place via the rubber deformation between the valve clearance compensation element and the membrane area surrounding it.
  • the same type of seal is chosen in the form-fitting connection area between the cylindrical and the round-shaped component of the valve cup, i.e. the forces to the guide shirt (cylinder) also acting eccentrically on the floor (round plate) are absorbed 'essentially by the metallic snap connection.
  • the hydraulic fluid is sealed by deforming the preferably vulcanized circumferential rubber bead through the circumferential bead of the round blank.
  • the proposed solution enables the system to be filled with hydraulic oil under oil without air bubbles, without using a vacuum.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Hydraulic Control Valves For Brake Systems (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Magnetically Actuated Valves (AREA)
EP86100893A 1985-04-12 1986-01-23 Dispositif de compensation du jeu dans la commande de soupapes Expired - Lifetime EP0197246B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86100893T ATE51934T1 (de) 1985-04-12 1986-01-23 Ventilspielausgleichseinrichtung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3513162 1985-04-12
DE19853513162 DE3513162A1 (de) 1985-04-12 1985-04-12 Ventilspielausgleichseinrichtung

Publications (3)

Publication Number Publication Date
EP0197246A2 true EP0197246A2 (fr) 1986-10-15
EP0197246A3 EP0197246A3 (en) 1987-05-06
EP0197246B1 EP0197246B1 (fr) 1990-04-11

Family

ID=6267850

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86100893A Expired - Lifetime EP0197246B1 (fr) 1985-04-12 1986-01-23 Dispositif de compensation du jeu dans la commande de soupapes

Country Status (5)

Country Link
EP (1) EP0197246B1 (fr)
JP (1) JPS61237808A (fr)
AT (1) ATE51934T1 (fr)
DE (1) DE3513162A1 (fr)
ES (1) ES296687Y (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0232482A1 (fr) * 1986-02-13 1987-08-19 Goetze Ag Dispositif de rattrapage de jeu
EP0272423A1 (fr) * 1986-11-22 1988-06-29 INA Wälzlager Schaeffler KG Poussoir de soupape à réglage hydraulique automatique
EP0473887A2 (fr) * 1990-08-24 1992-03-11 Firma Carl Freudenberg Compensateur hydraulique du jeu de soupapes pour moteurs à combustion interne

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB562101A (en) * 1942-12-14 1944-06-19 Arthur Burton Buckley Improvements in or relating to adjustable distance-pieces, tappets, valve-lifters and like adjustable devices
US3495577A (en) * 1968-02-07 1970-02-17 Clifford H Collins Self-contained hydraulic tappet
US3521608A (en) * 1968-10-16 1970-07-28 Gen Motors Corp Self-contained hydraulic valve lifter
GB2093940A (en) * 1981-03-02 1982-09-08 Stanadyne Inc Hydraulic lash adjuster
DE3421420A1 (de) * 1983-08-16 1985-03-07 IRM-Antriebstechnik GmbH, 7057 Winnenden Oel-zulauf mit ruecklaufsperre fuer tassenstoessel mit hydraulischem ventilspielausgleich
EP0156260A2 (fr) * 1984-03-27 1985-10-02 RIV-SKF OFFICINE DI VILLAR PEROSA S.p.A Poussoir hydraulique pour commander une soupape d'un moteur à combustion interne

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1914693B2 (de) * 1969-03-22 1978-02-16 Motomak Motorenbau Maschinen- U. Werkzeugfabrik, Konstruktionen Gmbh, 8070 Ingolstadt Ventilstoessel fuer brennkraftmaschinen mit obenliegender nockenwelle

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB562101A (en) * 1942-12-14 1944-06-19 Arthur Burton Buckley Improvements in or relating to adjustable distance-pieces, tappets, valve-lifters and like adjustable devices
US3495577A (en) * 1968-02-07 1970-02-17 Clifford H Collins Self-contained hydraulic tappet
US3521608A (en) * 1968-10-16 1970-07-28 Gen Motors Corp Self-contained hydraulic valve lifter
GB2093940A (en) * 1981-03-02 1982-09-08 Stanadyne Inc Hydraulic lash adjuster
DE3421420A1 (de) * 1983-08-16 1985-03-07 IRM-Antriebstechnik GmbH, 7057 Winnenden Oel-zulauf mit ruecklaufsperre fuer tassenstoessel mit hydraulischem ventilspielausgleich
EP0156260A2 (fr) * 1984-03-27 1985-10-02 RIV-SKF OFFICINE DI VILLAR PEROSA S.p.A Poussoir hydraulique pour commander une soupape d'un moteur à combustion interne

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0232482A1 (fr) * 1986-02-13 1987-08-19 Goetze Ag Dispositif de rattrapage de jeu
US4825824A (en) * 1986-02-13 1989-05-02 Goetze Ag Valve clearance adjusting device
EP0272423A1 (fr) * 1986-11-22 1988-06-29 INA Wälzlager Schaeffler KG Poussoir de soupape à réglage hydraulique automatique
US4787347A (en) * 1986-11-22 1988-11-29 Ina Walzlager Schaeffler Kg Self-adjusting hydraulic valve tappet
EP0473887A2 (fr) * 1990-08-24 1992-03-11 Firma Carl Freudenberg Compensateur hydraulique du jeu de soupapes pour moteurs à combustion interne
EP0473887A3 (en) * 1990-08-24 1992-07-01 Firma Carl Freudenberg Hydraulic valve lash adjuster for internal combustion engines

Also Published As

Publication number Publication date
EP0197246A3 (en) 1987-05-06
ES296687U (es) 1987-12-01
DE3513162C2 (fr) 1989-05-11
ES296687Y (es) 1988-05-16
JPS61237808A (ja) 1986-10-23
EP0197246B1 (fr) 1990-04-11
DE3513162A1 (de) 1986-10-16
ATE51934T1 (de) 1990-04-15

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