EP0223898A1 - Hydraulic lash adjusting device - Google Patents

Hydraulic lash adjusting device Download PDF

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Publication number
EP0223898A1
EP0223898A1 EP86102711A EP86102711A EP0223898A1 EP 0223898 A1 EP0223898 A1 EP 0223898A1 EP 86102711 A EP86102711 A EP 86102711A EP 86102711 A EP86102711 A EP 86102711A EP 0223898 A1 EP0223898 A1 EP 0223898A1
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EP
European Patent Office
Prior art keywords
adjusting piston
valve stem
spherical
valve
projection
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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
EP86102711A
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German (de)
French (fr)
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EP0223898B1 (en
Inventor
Walter Dipl.-Ing. Speil
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Motomak Motorenbau Maschinen und Werkzeugfabrik Konstruktionen GmbH
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Motomak Motorenbau Maschinen und Werkzeugfabrik Konstruktionen GmbH
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    • 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 compensating 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 ball 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 cap of the adjusting piston engages, and 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 shoe is simply inserted between the calotte of the adjusting piston and the end face of the valve stem, where it is held in place during operation by the intermeshing of the spherical projection and the calotte.
  • 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 claim 1 only in that the slide shoe 14 provided here has an outer lateral 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)

Abstract

Bei einer hydraulischen Spielausgleichsvorrichtung, bei der in einer in Verlängerung des Schaftes (4) eines Motorventils verlaufenden Bohrung eines Kipphebels (1) ein hydraulisches Ausgleichselement (2) unterge­bracht ist, dessen längsverschiebbarer Einstellkolben (3) zum Ventilschaft (4) hin in einem Kugelvorsprung (5) endet, zwischen dem und der planen Stirnfläche (6) des Ventilschaftes (4) ein Gleitschuh (7, 14) angeordnet ist, der einerseits eine Kugelkalotte (8) aufweist, in die der Kugel­vorsprung (5) des Einstellkolbens (3) eingreift, und der andererseits sich mit einer Planfläche (9) an der Stirnfläche (6) des Ventilschaftes (4) abstützt, wird eine sichere und unverlierbare Halterung des Gleitschuhes dadurch erreicht, daß am Einstellkolben (3) von einer hinter dem Kugel­vorsprung (5) liegenden Stelle ein Käfigteil (11) ausgeht, das sich in Richtung zum Ventilschaft (4) erstreckt und dort in radial einwärts ge­richteten Haltezonen (13) endet, die die Außenmantelfläche (15) des Gleitschuhes (7, 14) bzw. Vorsprünge (10) dieser Mantelfläche derart hintergreifen, daß der Gleitschuh bei freier Winkelbeweglichkeit gegen­über dem Einstellkolben (3) verliersicher an diesem gehalten ist.

Figure imgaf001
In the case of a hydraulic lash adjuster, in which a hydraulic compensating element (2) is accommodated in a bore of a rocker arm (1) that extends in the extension of the stem (4) of an engine valve, the longitudinally displaceable adjusting piston (3) of which extends to the valve stem (4) in a ball projection ( 5) ends, between which and the flat end face (6) of the valve stem (4) a slide shoe (7, 14) is arranged, which on the one hand has a spherical cap (8) into which the spherical projection (5) of the adjusting piston (3) engages , and which on the other hand is supported with a flat surface (9) on the end face (6) of the valve stem (4), a secure and captive mounting of the sliding block is achieved in that the adjusting piston (3) is located behind the ball projection (5) Place a cage part (11) which extends in the direction of the valve stem (4) and ends there in radially inwardly directed holding zones (13) which define the outer surface (15) of the slide reach behind shoes (7, 14) or projections (10) of this lateral surface in such a way that the sliding shoe is held captively against the adjusting piston (3) with free angular mobility.
Figure imgaf001

Description

Die Erfindung betrifft eine hydraulische Spielausgleichsvorrichtung, bei der in einer in Verlängerung des Schaftes eines Motorventils verlaufenden Bohrung eines Kipphebels oder ähnlichen Betätigungsorganes ein hydraulisches Ausgleichselement untergebracht ist, dessen längsverschiebbarer Einstellkolben zum Ventilschaft hin in einem Kugel­vorsprung endet, zwischen dem und der planen Stirnfläche des Ventil­schaftes ein Gleitschuh angeordnet ist, der einerseits eine Kugelkalotte aufweist, in die die Kugelkalotte des Einstellkolbens eingreift, und der andererseits sich mit einer Planfläche an der Stirnfläche des Ventilschaftes abstützt.The invention relates to a hydraulic lash adjuster, in which a hydraulic compensating 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 ball 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 cap of the adjusting piston engages, and on the other hand is supported with a flat surface on the end face of the valve stem.

Die Anordnung derartiger Gleitschuhe ist bekannt. Sie dienen dazu, zwischen dem Einstellkolben einerseits und dem Ventilschaft andererseits Berührungsflächen zu schaffen, durch welche der Verschleiß vermindert und die Schmierverhältnisse verbessert werden. Bei einer bekannten Aus­führung ist ein solcher Gleitschuh einfach zwischen die Kalotte des Ein­stellkolbens und die Stirnfläche des Ventilschaftes eingelegt, wo er während des Betriebes durch das Ineinandergreifen von Kugelvorsprung und Kalotte an Ort und Stelle gehalten wird. Bei der Demontage der Kipphebel besteht jedoch die Gefahr, daß der Gleitschuh in den Motor­block fällt, von wo er nur sehr schwierig wieder entfernt werden kann (DE-OS 31 18 466).The arrangement of such sliding shoes is known. They 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. In a known embodiment, such a sliding shoe is simply inserted between the calotte of the adjusting piston and the end face of the valve stem, where it is held in place during operation by the intermeshing of the spherical projection and the calotte. When dismantling the rocker arm, however, there is a risk that the slide shoe falls into the engine block, from where it can be very difficult to remove (DE-OS 31 18 466).

Bei einer anderen Ausführung hat man einen solchen Gleitschuh bereits mit einer Verliersicherung versehen, indem man ihn mit einem umge­bördelten Rand in eine umlaufende Nut des Ventilschaftes eingreifen ließ. Dadurch ist er auch bei der Demontage der Kipphebel sicher am Ventilschaftende befestigt und kann nicht verlorengehen. Nachteilig ist hierbei, daß der Motorenhersteller unterschiedliche Ventile auf Lager halten muß, wenn er neben Ventilsteuerungen mit hydraulischen Spielausgleichsvorrichtungen auch Ventilsteuerungen mit mechanischer Ventilspieleinstellung herstellt (DE-OS 33 40 398).In another version, you already have such a shoe provided with a captive lock by letting it engage with a flanged edge in a circumferential groove of 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 must 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 40 398).

Es wurden auch schon Halterungen für derartige Gleitschuhe ausgeführt, die als eine Art Umkehrung der vorher beschriebenen Ausführung anzu­sehen sind, bei der nämlich der Gleitschuh mit einer Einbördelung hinter eine Durchmesserverringerung des Kugelvorsprungs am Einstellkolben greift. Diese bedingt jedoch, daß der Kugelvorsprung am Einstellkolben deutlich verlängert werden muß, um den axial erforderlichen Raum für diese Durchmesserverringerung zu schaffen. Diese zusätzlich erforder­liche Einbaulänge steht jedoch in vielen Fällen nicht zur Verfügung.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. However, this means that the ball projection on the adjusting piston must be extended significantly in order to create the axially required space for this diameter reduction. In many cases, however, this additional installation length is not available.

Der Erfindung liegt die Aufgabe zugrunde, eine sichere Halterung des Gleitschuhs am hydraulischen Ausgleichselement zu schaffen, ohne daß es einer Verlängerung des Einstellkolbens bedürfte, und ohne daß Ände­rungen am Ventilschaft erforderlich sind.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.

Diese Aufgabe wird nach der Erfindung dadurch gelöst, daß am Einstell­kolben von einer hinter dem Kugelvorsprung liegenden Stelle ein Käfig­teil ausgeht, das sich in Richtung zum Ventilschaft erstreckt und dort in radial einwärts gerichteten Haltezonen endet, die die Außenmantelfläche des Gleitschuhes bzw. Vorsprünge dieser Mantelfläche derart hinter­greifen, daß der Gleitschuh bei freier Winkelbeweglichkeit gegenüber dem Einstellkolben verliersicher an diesem gehalten ist.This object is achieved according to the invention in that on the adjusting piston 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.

In den Unteransprüchen sind vorteilhafte Ausgestaltungen der erfindungs­gemäßen Vorrichtung wiedergegeben.Advantageous embodiments of the device according to the invention are given in the subclaims.

In den Zeichnungen sind zwei Ausführungsbeispiele der Erfindung im Längsschnitt dargestellt.In the drawings, two embodiments of the invention are shown in longitudinal section.

In Fig. 1 ist in dem Kipphebel 1 in bekannter Weise ein hydraulisches Ausgleichselement 2 gelagert, dessen Einstellkolben 3 an seinem dem Ventilschaft 4 zugekehrten Ende in einem Kugelvorsprung 5 endet. Zwischen diesem Kugelvorsprung 5 und der planen Stirnfläche 6 des Ventilschaftes 4 ist der Gleitschuh 7 angeordnet in dessen Kugelkalotte 8 der Kugelvorsprung 5 des Einstellkolbens 3 eingreift, und dessen plane Stirnfläche 9 mit der Stirnfläche 6 des Ventilschaftes 4 zusammenwirkt.In Fig. 1, 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. Between this spherical projection 5 and the flat end face 6 of 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.

Die äußere Mantefläche des Gleitschuhes 7 weist an ihrem dem Einstell­kolben 3 zugewandten Ende einen radial vorspringenden Bund 10 auf. Ein Käfigteil 11 ist zu seiner Befestigung am Eintellkolben 3 an seinem oberen Ende in die Umfangsnut 12 eingeformt. An seinem unteren Ende ist das Käfigteil 11 zu den Haltezonen 13 eingezogen, die auf einem Innendurchmesser liegen, der kleiner ist, als der Durchmesser des Bundes 10. Der Abstand der Haltezonen 13 von dem Bund 10 in axialer Richtung ist so gewählt, daß der Gleitschuh 7 innerhalb der im Betrieb auf­tretenden Winkelbewegungen schwenken kann, ohne an den Haltezonen 13 anzustoßen. Auf diese Weise ist eine sichere Halterung des Gleitschuhes 7 gewährleistet, ohne daß dessen freie Einstellbarkeit durch irgendwelche angrenzenden Bauteile behindert wäre.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. At its lower end, 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.

Die in Fig. 2 dargestellte Variante des Anmeldungsgegenstandes unter­scheidet sich von der nach Anspruch 1 lediglich dadurch, daß der hier vorgesehene Gleitschuh 14 eine äußere Mantelfläche 15 aufweist, die als Teil einer Kugeloberfläche ausgebildet ist, deren Mittelpunkt mit dem Mittelpunkt des Kugelvorsprunges 5 zusammenfällt. Die Haltezonen 13 des Käfigteiles 11 enden unterhalb der durch den Mittelpunkt des Kugel­vorsprunges gehenden Querebene 16, wodurch eine sichere Halterung des Gleitschuhes 14 ebenso wie dessen freie Winkelbeweglichkeit gewähr­leistet ist.The variant of the subject of the application shown in FIG. 2 differs from that of claim 1 only in that the slide shoe 14 provided here has an outer lateral 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.

Um die angestrebte Funktion zu erfüllen, ist es nicht unbedingt erforder­lich, daß sich der Bund 10 oder die Kugelfläche 15 über den gesamten Umfang des Gleitschuhes erstrecken. Es genügt vielmehr, wenn z. B. drei um jeweils 120° versetzte Vorsprünge vorgesehen sind. Dasselbe gilt sinngemäß für die Haltezonen 13 des Käfigteiles 11.In order to fulfill the intended function, it is not absolutely necessary for the collar 10 or the spherical surface 15 to extend over the entire circumference of the sliding block. Rather, it is sufficient if, for. B. three projections offset by 120 ° are provided. The same applies analogously to the holding zones 13 of the cage part 11.

Claims (4)

1. Hydraulische Ventilspielausgleichsvorrichtung, bei der in einer in Ver­längerung des Schaftes (4) eines Motorventils verlaufenden Bohrung eines Kipphebels (1) oder ähnlichen Betätigungsorganes ein hydraulisches Aus­gleichselement (2) untergebracht ist, dessen längsverschiebbarer Einstellkolben (3) zum Ventilschaft (4) hin in einem Kugelvorsprung (5) endet, zwischen demund der planen Stirnfläche (6) des Ventilschaftes (4) ein Gleitschuh (7, 14) angeordnet ist, der einerseits eine Kugelkalotte (8) aufweist, in die der Kugelvorsprung (5) des Einstellkolbens (3) eingreift, und der andererseits sich mit einer Planfläche (9) an der Stirnfläche (6) des Ventilschaftes (4) abstützt, dadurch gekennzeichnet, daß am Einstell­kolben (3) von einer hinter dem Kugelvorsprung (5) liegenden Stelle ein Käfigteil (11) ausgeht, das sich in Richtung zum Ventilschaft (4) er­streckt und dort in radial einwärts gerichteten Haltezonen (13) endet, die die Außenmantelfläche (15) des Gleitschuhes (7, 14) bzw. Vorsprünge (10) dieser Mantelfläche derart hintergreifen, daß der Gleitschuh bei freier Winkelbeweglichkeit gegenüber dem Einstellkolben (3) verliersicher an diesem gehalten ist.1.Hydraulic valve lash adjuster, in which a hydraulic compensating element (2) is housed in a bore of a rocker arm (1) or similar actuating element extending in the extension of the stem (4) of an engine valve, the longitudinally displaceable adjusting piston (3) of which towards the valve stem (4) a spherical projection (5) ends, between which and the flat end face (6) of the valve stem (4) a slide shoe (7, 14) is arranged, which on the one hand has a spherical cap (8) into which the spherical projection (5) of the adjusting piston (3 ) engages, and which on the other hand is supported with a flat surface (9) on the end face (6) of the valve stem (4), characterized in that a cage part (11) is located on the adjusting piston (3) from a point behind the spherical projection (5). starts, which extends in the direction of the valve stem (4) and ends there in radially inwardly directed holding zones (13) which cover the outer surface (15) of the sliding block (7, 14) or preload Reach behind the ridges (10) of this lateral surface in such a way that the sliding shoe is held captively against the adjusting piston (3) with free angular mobility. 2. Ventilspielausgleichsvorrichtung nach Anspruch 1, dadurch gekennz­zeichnet, daß die äußere Mantefläche (15) des Gleitschuhes (14) als Teil einer Kugeloberfläche ausgebildet ist, deren Mittelpunkt vorzugsweise mit dem Mittelpunkt des Kugelkalotte (8) zusammenfällt, und daß am Einstellkolben (3) an einer hinter dem Kugelvorsprung (5) liegenden Stelle ein Käfigteil (11) befestigt ist, das sich in Richtung zum Ventilschaft (4) bis hinter eine durch den Kalottenmittelpunkt gehende Querebene (16) erstreckt und dort Haltezonen (13) aufweist, die auf einem Durchmesser liegen, der kleiner ist, als der Durchmesser der kugelförmigen Mantel­fläche (15) des Gleitschuhs (14).2. Valve clearance compensation device according to claim 1, characterized in that the outer surface (15) of the slide shoe (14) is formed as part of a spherical surface, the center of which preferably coincides with the center of the spherical cap (8), and that the adjusting piston (3) A cage part (11) is fastened to a point lying behind the ball projection (5), which extends in the direction of the valve stem (4) as far as behind a transverse plane (16) passing through the center of the spherical cap and there has holding zones (13) which have a diameter lie, which is smaller than the diameter of the spherical outer surface (15) of the sliding block (14). 3. Ventilspielausgleichsvorrichtung nach Anspruch 1 oder 2, dadurch ge­kennzeichnet, daß das Käfigteil (11) als im wesentlichen zylindrisches Bauteil ausgebildet ist, das am einen Ende zu seiner Befestigung am Ein­stellkolben (3) in eine Umfangsnut (12) dieses Kolbens (3) eingreift und am anderen Ende auf einen verringerten Durchmesser eingezogen ist.3. valve lash adjuster according to claim 1 or 2, characterized in that the cage part (11) is designed as a substantially cylindrical component which engages at one end for its attachment to the adjusting piston (3) in a circumferential groove (12) of this piston (3) and is drawn to a reduced diameter at the other end. 4. Ventilspielausgleichsvorrichtung nach Anspruch 3, dadurch ge­kennzeichnet, daß das Käfigteil (11) ausgehend von dem Ende, an dem es auf einen verringerten Durchmesser eingezogen ist, über einen Teil seiner Länge mit mehreren über den Umfang verteilten Längsschlitzen versehen ist, wodurch sich einzelne Haltezungen ergeben.4. valve lash adjuster according to claim 3, characterized in that the cage part (11) starting from the end at which it is drawn to a reduced diameter, is provided over part of its length with several circumferential longitudinal slots, whereby individual retaining tongues surrender.
EP86102711A 1985-11-21 1986-03-01 Hydraulic lash adjusting device Expired EP0223898B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3541198 1985-11-21
DE19853541198 DE3541198A1 (en) 1985-11-21 1985-11-21 HYDRAULIC GAME COMPENSATION DEVICE

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EP0223898A1 true EP0223898A1 (en) 1987-06-03
EP0223898B1 EP0223898B1 (en) 1989-11-08

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JP (1) JPH0668241B2 (en)
DE (2) DE3541198A1 (en)

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EP0279275A1 (en) * 1987-02-12 1988-08-24 Cummins Engine Company, Inc. Ceramic ball and socket joint
EP0301267A1 (en) * 1987-07-30 1989-02-01 INA Wälzlager Schaeffler KG Ball joint placed between a rocker arm and a valve shaft in an internal-combustion engine
EP0244558B1 (en) * 1986-04-26 1989-11-08 MOTOMAK Motorenbau, Maschinen- und Werkzeugfabrik, Konstruktionen GmbH Hydraulic valve lash adjusting device for an internal-combustion engine
DE19505406A1 (en) * 1995-02-17 1996-08-22 Schaeffler Waelzlager Kg Hydraulic tappet adjustment e.g. for IC engine
DE10007087C2 (en) * 1999-03-01 2002-10-24 Cummins Engine Co Inc Ram bearing assembly for a lever and for a rocker arm and method of manufacturing the same
EP2462322A1 (en) * 2009-08-04 2012-06-13 International Engine Intellectual Property Company, LLC Bridge and pivot foot arrangement for operating engine cylinder valves
FR2976617A1 (en) * 2011-06-15 2012-12-21 Valeo Sys Controle Moteur Sas Actuating unit for controlling disconnection of inlet valve from spark-ignition engine, has valve provided with ends, and actuator for controlling transition of transmission element from connected position to disconnected position

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DE3638202A1 (en) * 1986-11-08 1988-05-19 Schaeffler Waelzlager Kg HYDRAULIC GAME COMPENSATION ELEMENT
DE3706006A1 (en) * 1987-02-25 1988-09-08 Schaeffler Waelzlager Kg HYDRAULIC GAME COMPENSATION ELEMENT FOR VALVE CONTROLS ON COMBUSTION ENGINES
US4815424A (en) * 1988-03-11 1989-03-28 Eaton Corporation Hydraulic lash adjuster
JPH02126005U (en) * 1989-03-28 1990-10-17
DE4446552A1 (en) * 1994-12-24 1996-06-27 Schaeffler Waelzlager Kg Hydraulic play compensator for IC engine
DE19502497A1 (en) * 1995-01-27 1996-08-01 Schaeffler Waelzlager Kg Hydraulic compensator for vehicle valve in IC engine
US5632237A (en) * 1995-08-07 1997-05-27 Hy-Lift Division Of Spx Corporation Hydraulic lash compensating element assembly
DE19537641A1 (en) * 1995-10-10 1997-04-17 Bayerische Motoren Werke Ag Point bearing tappet for IC-engine valve
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 (en) * 1997-07-31 1999-02-04 Schaeffler Waelzlager Ohg Hydraulic valve play compensation system for internal combustion motor
DE19750806B4 (en) * 1997-11-17 2015-03-26 Schaeffler Technologies AG & Co. KG Hydraulic lash adjuster
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
US6199526B1 (en) * 1999-06-28 2001-03-13 Michael G. Knickerbocker Retainer for rocker arm coupling in an internal combustion engine
US6397805B1 (en) 1999-06-28 2002-06-04 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
DE102011002592A1 (en) 2011-01-12 2012-07-12 Schaeffler Technologies Gmbh & Co. Kg angle joint
DE102012200755A1 (en) 2012-01-19 2013-07-25 Schaeffler Technologies AG & Co. KG Hydraulic lash adjuster for valve train of internal combustion engine, has housing portion and piston that are supported against each other through return spring arranged in pressure chamber between supporting head region and piston
GB2542600A (en) * 2015-09-25 2017-03-29 Eaton Srl Hydraulic lash adjuster

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EP0244558B1 (en) * 1986-04-26 1989-11-08 MOTOMAK Motorenbau, Maschinen- und Werkzeugfabrik, Konstruktionen GmbH Hydraulic valve lash adjusting device for an internal-combustion engine
EP0279275A1 (en) * 1987-02-12 1988-08-24 Cummins Engine Company, Inc. Ceramic ball and socket joint
EP0301267A1 (en) * 1987-07-30 1989-02-01 INA Wälzlager Schaeffler KG Ball joint placed between a rocker arm and a valve shaft in an internal-combustion engine
AU598673B2 (en) * 1987-07-30 1990-06-28 Ina Walzlager Schaeffler Kg A ball-and-socket joint
DE19505406A1 (en) * 1995-02-17 1996-08-22 Schaeffler Waelzlager Kg Hydraulic tappet adjustment e.g. for IC engine
DE10007087C2 (en) * 1999-03-01 2002-10-24 Cummins Engine Co Inc Ram bearing assembly for a lever and for a rocker arm and method of manufacturing the same
EP2462322A1 (en) * 2009-08-04 2012-06-13 International Engine Intellectual Property Company, LLC Bridge and pivot foot arrangement for operating engine cylinder valves
EP2462322A4 (en) * 2009-08-04 2013-06-05 Int Engine Intellectual Prop Bridge and pivot foot arrangement for operating engine cylinder valves
FR2976617A1 (en) * 2011-06-15 2012-12-21 Valeo Sys Controle Moteur Sas Actuating unit for controlling disconnection of inlet valve from spark-ignition engine, has valve provided with ends, and actuator for controlling transition of transmission element from connected position to disconnected position

Also Published As

Publication number Publication date
DE3666857D1 (en) 1989-12-14
EP0223898B1 (en) 1989-11-08
DE3541198A1 (en) 1987-05-27
US4708103A (en) 1987-11-24
JPH0668241B2 (en) 1994-08-31
JPS62126211A (en) 1987-06-08

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