EP0223898B1 - Dispositif hydrauliquede compensation de jeu - Google Patents

Dispositif hydrauliquede compensation de jeu Download PDF

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Publication number
EP0223898B1
EP0223898B1 EP86102711A EP86102711A EP0223898B1 EP 0223898 B1 EP0223898 B1 EP 0223898B1 EP 86102711 A EP86102711 A EP 86102711A EP 86102711 A EP86102711 A EP 86102711A EP 0223898 B1 EP0223898 B1 EP 0223898B1
Authority
EP
European Patent Office
Prior art keywords
spherical
adjusting piston
sliding shoe
valve
valve stem
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
Application number
EP86102711A
Other languages
German (de)
English (en)
Other versions
EP0223898A1 (fr
Inventor
Walter Dipl.-Ing. Speil
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.)
Motomak Motorenbau Maschinen und Werkzeugfabrik Konstruktionen GmbH
Original Assignee
Motomak Motorenbau Maschinen und Werkzeugfabrik Konstruktionen 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 Motomak Motorenbau Maschinen und Werkzeugfabrik Konstruktionen GmbH filed Critical Motomak Motorenbau Maschinen und Werkzeugfabrik Konstruktionen GmbH
Publication of EP0223898A1 publication Critical patent/EP0223898A1/fr
Application granted granted Critical
Publication of EP0223898B1 publication Critical patent/EP0223898B1/fr
Expired 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
    • F01L1/46—Component parts, details, or accessories, not provided for in preceding subgroups
    • 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
    • F01L1/2411—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically by means of a hydraulic adjusting device located between the valve stem and rocker arm
    • 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
    • F01L2001/187—Clips, e.g. for retaining rocker arm on pivot

Definitions

  • the invention relates to a hydraulic lash adjuster, in which a hydraulic compensation element is housed in a bore of a rocker arm or similar actuating element extending in the extension of the shaft of an engine valve, the longitudinally displaceable adjusting piston of which ends in a spherical projection towards the valve stem, between which and the flat end face of the valve stem Sliding shoe is arranged, which on the one hand has a spherical cap in which the spherical projection of the adjusting piston engages, and which on the other hand is supported with a flat surface on the end face of the valve stem.
  • sliding shoes serve to create contact surfaces between the adjusting piston on the one hand and the valve stem on the other hand, by means of which wear is reduced and the lubrication conditions are improved.
  • a sliding block is simply inserted between the spherical projection of the adjusting piston and the end face of the valve stem, where it is held in place during operation by the meshing of the spherical projection and the spherical cap.
  • such a slide shoe has already been provided with a captive lock by allowing it to engage with a flanged edge in a circumferential groove in the valve stem. As a result, it is securely attached to the end of the valve stem when the rocker arms are removed and cannot be lost.
  • the disadvantage here is that the engine manufacturer has to keep different valves in stock if he also produces valve controls with mechanical valve clearance adjustment in addition to valve controls with hydraulic lash adjusters (DE-OS 33 04 398).
  • Brackets for such sliding shoes have also already been made, which are to be regarded as a kind of reversal of the previously described embodiment, in which the sliding shoe engages behind a reduction in diameter of the spherical projection on the adjusting piston with a flange.
  • the invention has for its object to provide a secure mounting of the slide shoe on the hydraulic compensating element, without the need for an extension of the adjusting piston, and without changes to the valve stem being required.
  • a cage part extends from a point lying behind the ball projection, which extends in the direction of the valve stem and ends there in radially inwardly directed holding zones which cover the outer lateral surface of the slide shoe or projections of this lateral surface in such a way reach behind that the sliding shoe is held captive against the adjusting piston with free angular mobility.
  • a hydraulic compensating element 2 is mounted in the rocker arm 1 in a known manner, the adjusting piston 3 of which ends in a ball projection 5 at its end facing the valve stem 4.
  • the sliding block 7 is arranged, in whose spherical cap 8 the spherical projection 5 of the adjusting piston 3 engages, and the flat end face 9 of which cooperates with the end face 6 of the valve stem 4.
  • the outer surface of the sliding shoe 7 has a radially projecting collar 10 at its end facing the adjusting piston 3.
  • a cage part 11 is molded into its circumferential groove 12 at its upper end for attachment to the adjusting piston 3.
  • the cage part 11 is drawn in to the holding zones 13, which lie on an inner diameter which is smaller than the diameter of the collar 10.
  • the distance of the holding zones 13 from the collar 10 in the axial direction is chosen so that the slide shoe 7 can pivot within the angular movements occurring during operation without hitting the holding zones 13. In this way, a secure mounting of the slide shoe 7 is ensured without its free adjustability being hindered by any adjacent components.
  • the variant of the subject of the application shown in FIG. 2 differs from that of FIG. 1 only in that the slide shoe 14 provided here has an outer circumferential surface 15 which is formed as part of a spherical surface, the center of which coincides with the center of the spherical projection 5.
  • the holding zones 13 of the cage part 11 end below the transverse plane 16 passing through the center of the spherical projection, as a result of which secure holding of the sliding block 14 and its free angular mobility is ensured.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Claims (4)

1. Dispositif hydraulique de compensation de jeu dans lequel un élément hydraulique de compensation de jeu (2) est logé dans un alésage d'un culbuteur (1) ou d'un autre organe analogue de manoeuvre, l'alésage étant situé dans le prolongement de la tige (4) d'une soupape de moteur, le piston d'ajustage (3) de l'élément de compensation de jeu (2) à déplacement longitudinal se terminant à son extrémité vers la tige de soupape (4) en une saillie sphérique (5), entre laquelle et la face frontale plane (6) de la tige de soupape (4) est agencé un patin coulissant (7, 14), qui d'un côté comprend une calotte sphérique (8) dans laquelle s'engage la saillie sphérique (5) du piston d'ajustage (3) et qui de l'autre côté, s'appuie par une surface plane (9) sur la face frontale (6) de la tige de soupape (4), caractérisé en ce que sur le piston d'ajustage (3), à partir d'un endroit situé derrière la saillie sphérique (5), un élément-cage (11) s'étend vers la tige de soupape (4) et s'y termine en zones de retenue (13) dirigées radialement vers l'intérieur, qui sont engagées derrière la face périphérique extérieure (15) du patin coulissant (7, 14) ou derrière des saillies (10) de cette face périphérique, de telle façon que, alors qu'un mouvement angulaire libre du patin coulissant par rapport au piston d'ajustage (3) est possible, le patin est retenu sur le piston de manière à ne pas pouvoir s'échapper.
2. Dispositif hydraulique de compensation de jeu suivant la revendication 1, caractérisé en ce que la face périphérique extérieure (15) du patin coulissant (14) est conformée en partie d'une surface sphérique dont le centre coïncide de préférence avec le centre de la calotte sphérique (8) et en ce que sur le piston d'ajustage (3), à un endroit situé derrière la saillie sphérique (5), est fixé un élément-cage (11) qui s'étend vers la tige de soupape (4) jusque derrière un plan transversal (16) passant par le centre de la calotte (8) et s'y termine en formant des zones de retenue (13) ayant un diamètre plus petit que le diamètre de la face sphérique extérieure (15) du patin coulissant (14).
3. Dispositif hydraulique de compensation de jeu suivant la revendication 1 ou 2, caractérisé en ce que l'élément-cage (11) est conformé en élément essentiellement cylindrique de construction, qui pour sa fixation au piston d'ajustage (3) s'engage à l'une de ses extrémités dans une rainure (12) de ce piston (3) et qui à l'autre extrémité est tiré vers l'intérieur à un diamètre réduit.
4. Dispositif hydraulique de compensation de jeu suivant la revendication 3, caractérisé en ce que l'élément-cage (11), à partir de son extrémité qui est tirée vers l'intérieur à un diamètre réduit, est pourvu sur une partie de sa longueur de plusieurs fentes longitudinales réparties sur sa périphérie, formant des languettes de retenue individuelles.
EP86102711A 1985-11-21 1986-03-01 Dispositif hydrauliquede compensation de jeu Expired EP0223898B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853541198 DE3541198A1 (de) 1985-11-21 1985-11-21 Hydraulische spielausgleichsvorrichtung
DE3541198 1985-11-21

Publications (2)

Publication Number Publication Date
EP0223898A1 EP0223898A1 (fr) 1987-06-03
EP0223898B1 true EP0223898B1 (fr) 1989-11-08

Family

ID=6286493

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86102711A Expired EP0223898B1 (fr) 1985-11-21 1986-03-01 Dispositif hydrauliquede compensation de jeu

Country Status (4)

Country Link
US (1) US4708103A (fr)
EP (1) EP0223898B1 (fr)
JP (1) JPH0668241B2 (fr)
DE (2) DE3541198A1 (fr)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3614258A1 (de) * 1986-04-26 1987-10-29 Motomak Hydraulische ventilspielausgleichsvorrichtung fuer verbrennungsmotoren
DE3638202A1 (de) * 1986-11-08 1988-05-19 Schaeffler Waelzlager Kg Hydraulisches spielausgleichselement
US4806040A (en) * 1987-02-12 1989-02-21 Cummins Engine Company, Inc. Ceramic ball and socket joint
DE3706006A1 (de) * 1987-02-25 1988-09-08 Schaeffler Waelzlager Kg Hydraulisches spielausgleichselement fuer ventilsteuerungen an verbrennungsmotoren
DE3725245A1 (de) * 1987-07-30 1989-02-09 Schaeffler Waelzlager Kg Kugelgelenk, welches zwischen einen kipphebel und einen ventilschaft eines verbrennungsmotors eingeschaltet ist
US4815424A (en) * 1988-03-11 1989-03-28 Eaton Corporation Hydraulic lash adjuster
JPH02126005U (fr) * 1989-03-28 1990-10-17
DE4446552A1 (de) * 1994-12-24 1996-06-27 Schaeffler Waelzlager Kg Hydraulische Spielausgleichsvorrichtung
DE19502497A1 (de) * 1995-01-27 1996-08-01 Schaeffler Waelzlager Kg Hydraulische Spielausgleichsvorrichtung
DE19505406A1 (de) * 1995-02-17 1996-08-22 Schaeffler Waelzlager Kg Hydraulische Spielausgleichsvorrichtung
US5632237A (en) * 1995-08-07 1997-05-27 Hy-Lift Division Of Spx Corporation Hydraulic lash compensating element assembly
DE19537641A1 (de) * 1995-10-10 1997-04-17 Bayerische Motoren Werke Ag Punktgelagerter Schwing- oder Kipphebel
US5680838A (en) * 1996-10-21 1997-10-28 General Motors Corporation Swivel foot lash adjuster
US5706771A (en) 1996-12-23 1998-01-13 General Motors Corporation Hydraulic element assembly
DE19733027A1 (de) * 1997-07-31 1999-02-04 Schaeffler Waelzlager Ohg Hydraulische Ventilspielausgleichsvorrichtung
DE19750806B4 (de) * 1997-11-17 2015-03-26 Schaeffler Technologies AG & Co. KG Hydraulische Spielausgleichsvorrichtung
US6138624A (en) * 1999-03-01 2000-10-31 Cummins Engine Company, Inc. Tappet socket assembly for rocker lever assembly and method of assembling the same
US6148780A (en) * 1999-03-31 2000-11-21 Delphi Technologies, Inc. Hydraulic element assembly
US6273042B1 (en) * 1999-06-14 2001-08-14 Amsted Industries Incorporated Rocker assemblies for control of engine valves and method of assembling such rocker assemblies
US6397805B1 (en) 1999-06-28 2002-06-04 Michael G. Knickerbocker Retainer for rocker arm coupling in an internal combustion engine
US6199526B1 (en) * 1999-06-28 2001-03-13 Michael G. Knickerbocker Retainer for rocker arm coupling in an internal combustion engine
US6557507B2 (en) 2001-03-30 2003-05-06 Caterpillar Inc. Rocker arm assembly
US8006661B2 (en) * 2009-08-04 2011-08-30 International Engine Intellectual Property Company, Llc Bridge and pivot foot arrangement for operating engine cylinder valves
DE102011002592A1 (de) 2011-01-12 2012-07-12 Schaeffler Technologies Gmbh & Co. Kg Winkelgelenk
FR2976617B1 (fr) * 2011-06-15 2015-06-19 Valeo Sys Controle Moteur Sas Controle d'un moteur a combustion interne
DE102012200755A1 (de) 2012-01-19 2013-07-25 Schaeffler Technologies AG & Co. KG Hydraulische Spielausgleichsvorrichtung
GB2542600A (en) * 2015-09-25 2017-03-29 Eaton Srl Hydraulic lash adjuster

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1865998A (en) * 1929-10-23 1932-07-05 Jr Adrian O Abbott Valve operating assembly
US2051313A (en) * 1933-08-14 1936-08-18 Boyle Motor Products Company Valve attachment
DE1179763B (de) * 1960-09-14 1964-10-15 Ford Werke Ag Ventiltrieb fuer ueber Stoessel, Stoesselstangen und Kipphebel gesteuerte Ventile von Brenn-kraftmaschinen
US3137282A (en) * 1962-08-23 1964-06-16 Voorhies Carl Metering valve with pin
GB1369597A (en) * 1970-10-17 1974-10-09 Snell A J Valve gear
DE2843918C2 (de) * 1978-10-09 1980-12-18 Ford-Werke Ag, 5000 Koeln Hydraulischer Stößel für einen Ventiltrieb einer Brennkraftmaschine
DE2920075A1 (de) * 1979-05-18 1980-11-20 Kloeckner Humboldt Deutz Ag Ventilgesteuerte brennkraftmaschine
DE3118466A1 (de) * 1981-05-09 1982-11-25 Motomak Motorenbau, Maschinen- u. Werkzeugfabrik, Konstruktionen GmbH, 8070 Ingolstadt Kipp- oder schwinghebel einer brennkraftmaschine
DE3203791A1 (de) * 1982-02-04 1983-08-11 Volkswagenwerk Ag, 3180 Wolfsburg Ventiltrieb, insbesondere fuer eine kraftfahrzeug-brennkraftmaschine
JPS58122710U (ja) * 1982-02-16 1983-08-20 宇部興産株式会社 排気弁駆動用タペツト
DE3304398A1 (de) * 1983-02-09 1984-08-09 Motomak Motorenbau, Maschinen- u. Werkzeugfabrik, Konstruktionen GmbH, 8070 Ingolstadt Innenelement fuer ein hydraulisches ventilspielausgleichselement fuer verbrennungsmotoren

Also Published As

Publication number Publication date
DE3541198A1 (de) 1987-05-27
DE3666857D1 (en) 1989-12-14
US4708103A (en) 1987-11-24
JPH0668241B2 (ja) 1994-08-31
JPS62126211A (ja) 1987-06-08
EP0223898A1 (fr) 1987-06-03

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