EP0516962B1 - Poussoir de soupape mécanique pour moteurs à combustion interne - Google Patents

Poussoir de soupape mécanique pour moteurs à combustion interne Download PDF

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Publication number
EP0516962B1
EP0516962B1 EP92106907A EP92106907A EP0516962B1 EP 0516962 B1 EP0516962 B1 EP 0516962B1 EP 92106907 A EP92106907 A EP 92106907A EP 92106907 A EP92106907 A EP 92106907A EP 0516962 B1 EP0516962 B1 EP 0516962B1
Authority
EP
European Patent Office
Prior art keywords
adjusting element
valve tappet
outer peripheral
peripheral surface
hub
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
EP92106907A
Other languages
German (de)
English (en)
Other versions
EP0516962A1 (fr
Inventor
Walter Dipl.-Ing. Speil
Dieter Schmidt
Michael Dipl.-Ing. Zipprath
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.)
INA Waelzlager Schaeffler OHG
Original Assignee
INA Waelzlager Schaeffler OHG
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 INA Waelzlager Schaeffler OHG filed Critical INA Waelzlager Schaeffler OHG
Publication of EP0516962A1 publication Critical patent/EP0516962A1/fr
Application granted granted Critical
Publication of EP0516962B1 publication Critical patent/EP0516962B1/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
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/14—Tappets; Push rods
    • F01L1/143—Tappets; Push rods for use with overhead camshafts
    • 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
    • F01L1/205—Adjusting or compensating clearance by means of shims or the like
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49298—Poppet or I.C. engine valve or valve seat making
    • Y10T29/49304—Valve tappet making

Definitions

  • the invention relates to a mechanical valve tappet which is arranged in a guide bore of a cylinder head of an internal combustion engine, which valve tappet consists of a cup-shaped housing which comprises a hollow cylindrical wall which is closed at one end by a base against which a control cam runs from the outside. While on the inside of the bottom there is an adjusting element with a flat end face, which is in contact with the end of a valve stem of a gas exchange valve with a plane-parallel end face, the adjusting element being designed as a solid component with a cylindrical outer surface and one inside the cup-shaped housing the hollow cylindrical wall is arranged concentric hub, the bore of which corresponds at least approximately to the outer diameter of the outer surface of the adjusting element.
  • a solution is known to the experts from FR-A 12 35 954, in which the setting element is fixed by means of a holder connected to the plunger.
  • the holder is designed here as a flat, cross-sectionally M-shaped component, which rests with its outer legs on an outer jacket of the tappet in question.
  • the wall must disadvantageously have an opening through which the outer legs are brought into contact with the wall of the plunger.
  • this fastening of the adjusting element proves to be relatively complex in terms of production technology, since an additional opening is provided in the wall of the plunger.
  • the opening weakens the rigidity of the plunger forming the generic term cited here, so that its wall may have to be made stronger.
  • Axial movement of the plunger is limited by the holder projecting radially beyond the wall of the plunger.
  • recesses are provided in the cylinder head in the area of the tappet, into which the holder can engage.
  • the clamping force of the holder is no longer sufficient, so that the adjusting element can become detached undesirably.
  • the object of the invention is to provide a valve tappet of the type mentioned, in which the disadvantages shown are eliminated and in particular in which a simple, secure and interchangeable attachment of its adjusting element is created, which should form an installation unit with the valve tappet.
  • This object is achieved by the fact that the position of the adjusting element in the interior of the valve tappet is achieved on the one hand via a separate thin-walled fastening element or a hub, which (s) on the other hand optionally only with respect to an inside of the closed wall or a lateral surface of a different one Bottom of the bottom in the axial direction extending central projection is set.
  • a separate thin-walled fastening element or a hub which (s) on the other hand optionally only with respect to an inside of the closed wall or a lateral surface of a different one Bottom of the bottom in the axial direction extending central projection is set.
  • the measures according to the invention guarantee a secure positional fixation of the adjusting element over the service life of the internal combustion engine, the interchangeability of the adjusting element also being provided.
  • the measures can be implemented on already existing, mechanically acting plungers, so that no subsequent changes, as shown in the prior art, are necessary, especially since the plunger according to the invention, which is present here, is advantageous with regard to the introduction of force by a start-up due to its fully symmetrical design Represents control cam.
  • the valve lifter shown in Figure 1 consists of the hollow cylindrical wall 1, which is closed at its upper end by the bottom 2, against which a control cam runs during operation.
  • the disc 3 bears against the base 2 and is formed in its center to form a hub 4.
  • This hub 4 receives the adjusting element 5, which is held in it under radial prestress.
  • the embodiment according to FIG. 2 differs from that according to FIG. 1 in that the hub 4 is provided at several circumferential locations with radially inwardly directed knobs 6 which bear against the adjusting element 5 with a prestress.
  • the hub 4 is provided at its end with a plurality of longitudinal slots 7 such that resilient tongues 8 result which hold the setting element - not shown in this figure - non-positively.
  • the embodiment according to FIG. 4 is similar to that according to FIG. 2, but differs from it in that the knobs 6 engage in a circumferential groove 9 of the setting element 5 and thus bring about a form-fitting mounting of the setting element 5.
  • the hub which holds the adjusting element under prestress is formed by a separate hollow cylindrical component 11 which, on the other hand, sits with prestress on a cylindrical projection which is made in one piece with the base 2.
  • FIG. 7 shows a variant in which a disk 13, which is connected to the hollow cylindrical wall 1 at a distance from the bottom 2, has an attachment 14 in its center, which engages in a positive manner in a groove 15 in the adjusting element 5.
  • FIGS. 8 and 9 finally show an embodiment in which a resilient component 16 is provided in the bore of the hollow cylindrical wall, which rests at three points 17 on the adjusting element 5 under tension and thus holds it in position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Valve Device For Special Equipments (AREA)

Claims (7)

  1. Poussoir de soupape mécanique agencé dans un alésage de guidage d'une tête de cylindre d'un moteur à combustion interne, lequel poussoir de soupape comprend un boîtier en forme de cuvette comprenant une paroi cylindrique creuse (1) qui est fermée à l'une de ses extrémités par un fond (2) dont la surface extérieure est contactée par une came de commande alors qu'un élément de réglage (5) s'appuie par une première face frontale plane contre la face interne du fond en étant en contact par une seconde face frontale parallèle à la première face frontale avec l'extrémité de la tige d'une soupape de remplacement des gaz, l'élément de réglage (5) étant réalisé sous la forme d'un composant massif ayant une surface périphérique extérieure cylindrique, et il étant agencé à l'intérieur du boîtier en forme de cuvette, un moyeu qui est concentrique à la paroi cylindrique creuse (1) et dont l'alésage correspond, au moins approximativement, au diamètre extérieur de la surface périphérique extérieure de l'élément de réglage (5), caractérisé en ce qu'une fixation de position de l'élément de réglage (5) à l'intérieur du poussoir de soupape est assurée par un élément séparé de fixation à parois minces, c'est-à-dire par un moyeu (3, 4; 11; 16) qui est immobilisé au choix exclusivement par rapport à une surface intérieure de la paroi (1) fermée ou exclusivement par rapport à une surface périphérique extérieure d'une saillie cylindrique (12) qui s'étend en direction axiale à partir d'une face inférieure du fond (2).
  2. Poussoir de soupape selon la revendication 1, caractérisé en ce que l'élément de fixation (3, 4) à l''intérieur du boîtier est formé par un disque (3, 13) à symétrie de révolution qui s'étend en direction radiale et est supporté au moins indirectement sur une face inférieure du fond (2) en s'étendant jusqu'à la paroi (1), ledit disque (3, 13) s'étendant, du côté radialement intérieur, en direction axiale pour former le moyeu (4) (Figures 1 à 4, 7).
  3. Poussoir de soupape selon la revendication 2, caractérisé en ce que, en quelques endroits périphériques du moyeu (4) sont formés des bossages (6) qui font saillie vers l'intérieur et qui peuvent également être configurés sous la forme d'un épaulement périphérique (14), et en ce que les bossages (6) ou l'épaulement (14) s'appuient sous une précontrainte élastique contre la surface périphérique extérieure de l'élément de réglage (5) (Figures 2, 4, 7).
  4. Poussoir de soupape selon la revendication 3, caractérisé en ce que, dans la surface périphérique extérieure de l'élément de réglage (5) sont prévus des évidements (9, 15) dans lesquels s'engagent par concordance de forme, les bossages (6) du moyeu (4) ou l'épaulement (14) (Figures 4, 7).
  5. Poussoir de soupape selon la revendication 2, caractérisé en ce que, sur une partie de sa longueur, le moyeu (4) est divisé par des fentes longitudinales (7) en des languettes élastiques (8) qui s'appuient sous précontrainte contre la surface périphérique extérieure de l'élément de réglage (5) (Figure 3).
  6. Poussoir de soupape selon la revendication 1, caractérisé en ce que la saillie (12) qui s'étend en direction axiale à partir de la face inférieure du fond (2) a une configuration cylindrique massive, et l'élément de fixation est configuré sous la forme d'un composant annulaire (11) qui entoure sous précontrainte, en même temps, la surface périphérique extérieure de l'élément de réglage (5) et la saillie (12) (Figure 6).
  7. Poussoir de soupape selon la revendication 1, caractérisé en ce que plusieurs ressorts à lames incurvés (16) réalisés en une seule pièce sont répartis sur la périphérie du côté intérieur de la paroi cylindrique creuse (1) pour former l'élément de fixation dont le centre de rotation s'étend le long de l'axe longitudinal du poussoir, lesdits ressorts à lames (16) s'appuyant par leurs extrémités contre la face intérieure de la paroi cylindrique creuse (1) alors que leurs zones intermédiaires sont incurvées vers le centre du poussoir de manière à s'appuyer sous précontrainte élastique contre la surface périphérique extérieure de l'élément de réglage (5) (Figures 8, 9).
EP92106907A 1991-06-07 1992-04-23 Poussoir de soupape mécanique pour moteurs à combustion interne Expired - Lifetime EP0516962B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4118776 1991-06-07
DE4118776A DE4118776A1 (de) 1991-06-07 1991-06-07 Mechanischer ventilstoessel fuer eine brennkraftmaschine

Publications (2)

Publication Number Publication Date
EP0516962A1 EP0516962A1 (fr) 1992-12-09
EP0516962B1 true EP0516962B1 (fr) 1995-08-02

Family

ID=6433430

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92106907A Expired - Lifetime EP0516962B1 (fr) 1991-06-07 1992-04-23 Poussoir de soupape mécanique pour moteurs à combustion interne

Country Status (5)

Country Link
US (1) US5267538A (fr)
EP (1) EP0516962B1 (fr)
JP (1) JPH05179906A (fr)
BR (1) BR9202155A (fr)
DE (2) DE4118776A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5226389A (en) * 1992-11-04 1993-07-13 Eaton Corporation Direct acting tappet
DE4406409A1 (de) * 1994-02-28 1995-08-31 Schaeffler Waelzlager Kg Mechanischer Ventilstößel
DE9414085U1 (de) * 1994-08-31 1994-11-17 INA Wälzlager Schaeffler KG, 91074 Herzogenaurach Mechanischer Tassenstößel mit einem Einstellelement
DE19527449A1 (de) * 1995-07-27 1997-01-30 Schaeffler Waelzlager Kg Mechanischer Tassenstößel für einen Ventiltrieb einer Brennkraftmaschine
MY141693A (en) * 1999-06-07 2010-06-15 Mitsubishi Motors Corp Internal combustion engine
DE10106983A1 (de) 2001-02-15 2002-08-29 Ina Schaeffler Kg Stößel
DE10360467B4 (de) * 2003-12-22 2011-11-10 Trw Deutschland Gmbh Mechanischer Ventilstößel
DE102004056458A1 (de) * 2004-11-23 2006-06-14 Schaeffler Kg Tassenstößel

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8902780U1 (de) * 1989-03-08 1989-04-20 INA Wälzlager Schaeffler KG, 8522 Herzogenaurach Sich selbsttätig hydraulisch einstellender Ventilstößel

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1235954A (fr) * 1959-02-07 1960-07-15 Simca Perfectionnements apportés au réglage du jeu des soupapes dans les moteurs à combustion interne
FR89780E (fr) * 1966-03-22 1967-08-18 Simca Automobiles Sa Perfectionnements apportés au réglage du jeu des soupapes dans les moteurs à combustion interne
DE2114478A1 (de) * 1970-03-24 1971-10-14 Piatti, Sanzio Pio Vincenzo, Mai land (Italien) Ventilmechanismus für Verbrennungs motoren
US3989016A (en) * 1975-07-25 1976-11-02 General Motors Corporation Mechanical valve lifter
DE2946682C2 (de) * 1979-11-20 1982-09-09 Bayerische Motoren Werke AG, 8000 München Vorrichtung zum Einstellen des Ventilspiels von Brennkraftmaschinen
JPS60216012A (ja) * 1984-04-11 1985-10-29 Yamaha Motor Co Ltd 内燃機関の動弁装置
DE3519015C2 (de) * 1985-05-25 1996-04-11 Schaeffler Waelzlager Kg Ventilstößel für Verbrennungskraftmaschinen
DE3809702A1 (de) * 1988-03-23 1989-10-05 Schaeffler Waelzlager Kg Bauteil im ventilsteuertrieb einer brennkraftmaschine
IT1230012B (it) * 1989-04-20 1991-09-20 Eaton Automotive Spa Punteria idraulica con condotto di aspirazione dell'olio, dal serbatoio esterno al serbatoio interno senza inclusioni di bolle d'aria, realizzato mediante lavorazione meccanica.
DE3919777C1 (fr) * 1989-06-16 1990-06-21 Daimler-Benz Aktiengesellschaft, 7000 Stuttgart, De
DE3920729A1 (de) * 1989-06-24 1991-01-10 Gmb Giesserei & Maschinenbau B Tassenstoesselkoerper fuer ventilstoessel
DE4014578A1 (de) * 1990-05-07 1991-11-14 Daimler Benz Ag Tassenstoessel fuer eine brennkraftmaschine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8902780U1 (de) * 1989-03-08 1989-04-20 INA Wälzlager Schaeffler KG, 8522 Herzogenaurach Sich selbsttätig hydraulisch einstellender Ventilstößel

Also Published As

Publication number Publication date
DE59203083D1 (de) 1995-09-07
DE4118776A1 (de) 1992-12-10
JPH05179906A (ja) 1993-07-20
EP0516962A1 (fr) 1992-12-09
US5267538A (en) 1993-12-07
BR9202155A (pt) 1993-01-26

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