EP0335121B1 - Poussoir de soupape à réglage hydraulique automatique - Google Patents

Poussoir de soupape à réglage hydraulique automatique Download PDF

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Publication number
EP0335121B1
EP0335121B1 EP89103618A EP89103618A EP0335121B1 EP 0335121 B1 EP0335121 B1 EP 0335121B1 EP 89103618 A EP89103618 A EP 89103618A EP 89103618 A EP89103618 A EP 89103618A EP 0335121 B1 EP0335121 B1 EP 0335121B1
Authority
EP
European Patent Office
Prior art keywords
wall
hollow cylindrical
bore
sleeve
cylindrical wall
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
EP89103618A
Other languages
German (de)
English (en)
Other versions
EP0335121A1 (fr
Inventor
Helmut Zorn
Georg Dr.-Ing. E.H. Dipl.-Kfm. Schaeffler
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.)
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Publication date
Application filed by INA Waelzlager Schaeffler OHG filed Critical INA Waelzlager Schaeffler OHG
Publication of EP0335121A1 publication Critical patent/EP0335121A1/fr
Application granted granted Critical
Publication of EP0335121B1 publication Critical patent/EP0335121B1/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

Definitions

  • the invention relates to an automatically hydraulically adjusting valve tappet according to the preamble of claim 1.
  • the invention has for its object to eliminate the disadvantage shown for a generic valve lifter with simple structural and in particular hardly additional costs and to achieve a permanent and independent of the floor deflection of the sleeve against the oil reservoir.
  • the invention solves this problem by the features specified in the characterizing part of claim 1. This ensures that the point at which the connection between the sleeve on the one hand and the cup-shaped housing takes place on the other hand remains unaffected by the floor deflections during operation.
  • it may be sufficient in individual cases to press the axially directed collar into the bore of the hollow cylindrical wall of the cup-shaped housing with a corresponding preload, so that the collar fits snugly in the bore of the hollow cylindrical wall.
  • the radially outward flange starting from the sleeve bear against the bottom of the cup-shaped housing, or to arrange it at a short distance from the floor, in order to ensure that any influence of the floor deflections on the flange and thus switch off to the weld seam, if applicable.
  • the flange can be slightly inclined so that it is only in its radially outermost region in contact with the inner surface of the floor. But it can also be supported on a shoulder of the hollow cylindrical wall so that it has no contact with the inner surface of the bottom. It is also possible to design the sleeve so that its end facing away from the ground is supported on the disk part. This creates a clamp connection that provides a secure hold for the sleeve and the flange connected to it.
  • the invention can also be used with advantage in a known valve tappet in which a cylinder jacket bears against the bore of the hollow cylindrical wall, which is attached to the wall in a liquid-tight manner at its end facing away from the floor and which has a longitudinal channel at least at one circumferential point with the wall limited, which is connected at its end facing away from the bottom with an oil supply bore, and which opens into the oil reservoir at its bottom end.
  • a tappet it is expedient to design and dimension the cylinder jacket so that it supports the cylindrical collar of the radial flange with its bottom end face.
  • the plunger shown consists of the cup-shaped housing 1, which consists of the hollow cylindrical wall 2 and the bottom 3, which is integral therewith.
  • this housing an inner part 4 is arranged, which is formed from the disc part 5 and the cylindrical guide sleeve 6.
  • the disk part 5 lies against the circumferential groove 8 formed in the hollow cylindrical wall and, on the other hand, is covered by the bead 9 formed out of the hollow cylindrical wall.
  • the hydraulic lash adjuster 10 is mounted, which consists of the outer piston 11, which is slidably guided in the guide sleeve 6, and which in turn slides and receives the inner piston 12 with tight play.
  • This has at its end facing the bottom 3 a central oil storage space 13, which is in fluid communication with an annular space 16 by means of the recess 14 in the inner surface 15 of the bottom 3, which is delimited by the inner piston 12 on the one hand and a sleeve 17 on the other, which itself over the cylindrical guide sleeve 6 extends in the direction from the bottom 3 to the vicinity of the disc part 5.
  • the sleeve 17 is dimensioned such that it overlaps the guide sleeve 6 on the outside with its bore and has at least one circumferential point with a longitudinally extending groove-shaped formation 18 which, together with the guide sleeve 6, delimits a longitudinal channel 19 via which oil from the outside annular oil storage space 20 in the annular space 16 and from there can finally get into the central oil storage space 13. From there, the oil is fed into the high-pressure oil chamber 22 in a known manner via the check valve 21.
  • the sleeve 17 is connected to the housing 1 in that at its end facing the bottom 3 it has a slightly inclined flange 23 which extends outwards and extends to the bore of the hollow cylindrical wall 2 and there in a short, passes axially away from the bottom 3 cylindrical collar 24 which fits snugly in the bore of the hollow cylindrical wall 2 and thereby creates a durable connection. If it is deemed necessary, the cylindrical collar 24 can additionally be welded to the bore of the wall 2 at its free end.
  • Figure 2 differs from Figure 1 in that the flange 23 is supported against a shoulder 25 of the hollow cylindrical wall 2 so that it has no contact with the inner surface 15 of the bottom 3. At the same time, the sleeve 17 is supported with its end facing away from the bottom 3 on the disk part 5, so that a firm clamping connection is provided.
  • the ring stamp 31 is in his Position before the material deformation of the wall 2 shown, while the right half shows the ring punch 31 in the position after the bead 30 has been shaped out of the wall 2.
  • retaining lugs for the sleeve 17 can also be formed out of the wall 2 at individual circumferential locations.
  • the ring stamp 31 has projections, the outer edges of which lie on a diameter that is larger than the diameter of the collar 24.
  • a cylinder jacket 26 adjoins the radially outer edge of the disk part 5, which lies against the bore of the hollow cylindrical wall 2 and which in the example shown is produced in one piece with the inner part 4.
  • this cylinder jacket 26, together with the wall 2 delimits a longitudinal channel 27 which is connected to an oil feed bore 28 at its end facing away from the base 3 and which opens into the oil reservoir 20 at its bottom end.
  • the cylindrical collar 24 of the flange 23 is supported on the bottom end face of the cylinder jacket 26 and is therefore sufficiently fastened without additional measures being required for this

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  • 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 à autoréglage hydraulique agencé dans un alésage de guidage d'une tête de cylindre d'un moteur à combustion interne, avec une came de commande contactant une face frontale dudit poussoir qui s'appuie avec une deuxième face frontale contre l'extrémité d'une tige de soupape, le poussoir de soupape comprenant un boîtier en forme de cuvette (1) qui comporte une paroi cylindrique creuse (2) fermée à une extremité par un fond (3) contre lequel s'appuie à l'extérieur la came de commande et dans lequel un manchon de guidage (6) concentrique à la paroi cylindrique creuse (2) est agencé et débouche, à son extrémité orientée à l'opposé du fond (3), au centre d'une partie en forme de disque (5) qui se raccorde à sa périphérie extérieure à la paroi cylindrique creuse (2) du boîtier (1), l'autre extrémité du manchon de guidage (6) étant situé à distance du fond (3) tandis que l'élément hydraulique de compensation de jeu (10) proprement dit est guidé en déplacement longitudinal dans le manchon de guidage (6) et comporte un piston intérieur (12), et, recouvrant celui-ci, un piston extérieur (11), les deux étant guidés en déplacement longitudinal l'un dans l'autre et délimitant conjointement une chambre d'huile à haute pression (22), reliée par un alésage ferme par un clapet anti-retour (21) dans le piston intérieur (12) au réservoir central d'huile (13) qui est agence dans le piston intérieur (12) et délimité d'un côté par la paroi du piston intérieur (12) et de l'autre côté par la surface interne (15) du fond (3) du boîtier (1) contre laquelle le piston intérieur (12) s'appuie frontalement tandis que le piston extérieur (11) est monté en déplacement longitudinal dans le manchon cylindrique de guidage (6) et s'appuie par son extrémité fermée contre l'extrémité de la tige de soupape, un réservoir annulaire d'huile (20) étant délimité par la paroi cylindrique creuse (2), le manchon de guidage (6), l'élément hydraulique de compensation de jeu (10), le fond (3) et la partie en forme de disque (5) et alimenté en huile par un alésage menant à l'extérieur, avec un manchon (17) recouvrant le manchon de guidage (6) en s'étendant dans la direction allant du fond (3) jusqu'au voisinage de la partie en forme de disque (5), un conduit (19) étant formé entre le manchon (17) et le manchon de guidage (6) et permettant le transfert d'huile à partir du réservoir annulaire d'huile (20) dans un espace annulaire (16) qui est délimité d'un côté par le manchon (17) et de l'autre côté par le piston intérieur (12), caractérisé en ce qu'à son extrémité faisant face au fond (3), le manchon (17) comprend une bride (23) dirigée radialement vers l'extérieur qui s'étend jusqu'à l'alésage de la paroi cylindrique creuse (2), et, à son bord radialement extérieur, se prolonge par un court collet cylindrique (24) orienté axialement à l'opposé du fond (3), lequel collet s'appuie contre l'alésage de la paroi cylindrique creuse (2) et, dans la région de son extrémité libre, est relié à la paroi (2).
2. Poussoir de soupape selon la revendication 1, caractérisé en ce qu'à son extrémité libre, le collet cylindrique (24) est relié à l'alésage de la paroi cylindrique creuse (2) en au moins quelques endroits périphériques par soudage ou par brasage.
3. Poussoir de-soupape selon la revendication 1, caractérisé en ce qu'à son extrémité libre, le collet cylindrique (24) est fixé dans l'alésage de la paroi cylindrique creuse (2) en au moins quelques endroits périphériques par des déformations locales de la paroi (2) par fluage à froid (matage) dans la région d'un épaulement (29) de la paroi (2).
4. Poussoir de soupape selon une des revendications précédentes, caractérisé en ce que la bride (23) est légèrement inclinée de façon qu'elle ne fait contact avec la surface interne (15) du fond (3) que par sa partie radialement la plus extérieure.
5. Poussoir de soupape selon une des revendications précédentes, caractérisé en ce que la bride (23) est supportée sur un épaulement (25) de la paroi cylindrique creuse (2) de manière à n'avoir aucun contact avec la surface interne (15) du fond (3).
6. Poussoir de soupape selon une des revendications précédentes, caractérisé en ce que le manchon (17) est supporté par son extrémité orientée à l'opposé du fond (3) sur la partie en forme de disque (5).
7. Poussoir de soupape selon une des revendications précédentes dans lequel une gaine cylindrique (26) s'appuie contre l'alésage de la paroi cylindrique creuse (2), laquelle gaine est fixée de manière étanche aux liquides par son extrémité orientée à l'opposé du fond (3) à la paroi (2) et qui, en au moins un endroit de sa périphérie, délimite avec la paroi (2), un conduit longitudinal (27) qui, à son extrémité orientée à l'opposé du fond communique avec un alésage d'alimentation en huile (28) et à son extrémité située du côté du fond, débouche dans le réservoir d'huile (20), caractérisé en ce que la gaine cylindrique (26) supporte par sa surface frontale située du côté du fond, le collet cylindrique (24).
EP89103618A 1988-03-26 1989-03-02 Poussoir de soupape à réglage hydraulique automatique Expired - Lifetime EP0335121B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3810436 1988-03-26
DE3810436A DE3810436A1 (de) 1988-03-26 1988-03-26 Sich selbsttaetig hydraulisch einstellender ventilstoessel

Publications (2)

Publication Number Publication Date
EP0335121A1 EP0335121A1 (fr) 1989-10-04
EP0335121B1 true EP0335121B1 (fr) 1991-11-27

Family

ID=6350852

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89103618A Expired - Lifetime EP0335121B1 (fr) 1988-03-26 1989-03-02 Poussoir de soupape à réglage hydraulique automatique

Country Status (5)

Country Link
US (1) US4876997A (fr)
EP (1) EP0335121B1 (fr)
JP (1) JPH01280606A (fr)
DE (2) DE3810436A1 (fr)
ES (1) ES2028390T3 (fr)

Families Citing this family (21)

* 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
DE4124184A1 (de) * 1991-07-20 1993-01-21 Schaeffler Waelzlager Kg Hydraulischer tassenstoessel
DE4209440A1 (de) * 1992-03-24 1993-09-30 Schaeffler Waelzlager Kg Tassenstößel mit hydraulischem Ventilspielausgleich
EP0591533A4 (fr) * 1992-04-27 1994-10-19 Nittan Valva Dispositif de reglage de poussoir hydraulique a effet direct.
US5280771A (en) * 1992-09-23 1994-01-25 Eaton Corporation Direct acting hydraulic tappet
DE4325610A1 (de) * 1993-07-30 1995-02-02 Schaeffler Waelzlager Kg Tassenförmiger Ventilstößel
DE4332110A1 (de) * 1993-09-22 1995-03-23 Schaeffler Waelzlager Kg Stößel mit hydraulischem Ventilspielausgleich
DE9408473U1 (de) * 1994-05-21 1994-07-21 INA Wälzlager Schaeffler KG, 91074 Herzogenaurach Tassenförmiger Stößel
DE19724563A1 (de) * 1997-06-11 1998-12-17 Schaeffler Waelzlager Ohg Tassenförmiger Ventilstößel
DE19728100B4 (de) * 1997-07-02 2005-11-10 Ina-Schaeffler Kg Schaltbarer Stößel für einen Ventiltrieb einer Brennkraftmaschine
RU2143564C1 (ru) * 1998-10-02 1999-12-27 Вахрамов Николай Александрович Гидравлическое устройство для компенсации зазоров в клапанном механизме двигателя внутреннего сгорания
RU2143565C1 (ru) * 1998-11-30 1999-12-27 Вахрамов Николай Александрович Гидравлическое устройство для компенсации зазоров в клапанном механизме двигателя внутреннего сгорания
RU2143566C1 (ru) * 1998-12-07 1999-12-27 Вахрамов Николай Александрович Гидравлическое устройство для компенсации зазоров в клапанном механизме двигателя внутреннего сгорания
RU2153587C1 (ru) * 1999-04-06 2000-07-27 Вахрамов Николай Александрович Гидравлическое устройство для компенсации зазоров в клапанном механизме двигателя внутреннего сгорания
US7028654B2 (en) 2002-10-18 2006-04-18 The Maclean-Fogg Company Metering socket
US7273026B2 (en) 2002-10-18 2007-09-25 Maclean-Fogg Company Roller follower body
US6871622B2 (en) 2002-10-18 2005-03-29 Maclean-Fogg Company Leakdown plunger
US7128034B2 (en) 2002-10-18 2006-10-31 Maclean-Fogg Company Valve lifter body
US7191745B2 (en) 2002-10-18 2007-03-20 Maclean-Fogg Company Valve operating assembly
DE102006045017A1 (de) * 2006-09-23 2008-03-27 Schaeffler Kg Hydraulisches Abstützelement
DE102012104968A1 (de) * 2012-06-08 2013-12-12 Block Transformatoren-Elektronik Gmbh Verspannvorrichtung zum Verspannen eines Kerns eines induktiven Geräts

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4590898A (en) * 1979-12-05 1986-05-27 Eaton Corporation Hydraulic tappet for direct-acting valve gear
DE3006644A1 (de) * 1980-02-22 1981-09-03 Motomak Motorenbau, Maschinen- u. Werkzeugfabrik, Konstruktionen GmbH, 8070 Ingolstadt Ventilstoessel fuer brennkraftmaschinen mit obenliegender nockenwelle
US4373477A (en) * 1980-12-29 1983-02-15 Eaton Corporation Lash adjuster with plunger retainer
DE3437478A1 (de) * 1984-10-12 1986-04-17 INA Wälzlager Schaeffler KG, 8522 Herzogenaurach Sich selbsttaetig hydraulisch einstellender ventilstoessel
DE3500425A1 (de) * 1985-01-09 1986-07-10 Motomak Motorenbau, Maschinen- u. Werkzeugfabrik, Konstruktionen GmbH, 8070 Ingolstadt Hydraulischer tassenstoessel fuer verbrennungsmotoren
DE3528432A1 (de) * 1985-08-08 1987-02-19 Motomak Sich selbsttaetig hydraulisch einstellender ventilstoessel
DE3542192A1 (de) * 1985-11-29 1987-06-04 Schaeffler Waelzlager Kg Sich selbsttaetig hydraulisch einstellender ventilstoessel
DE3623638C2 (de) * 1986-07-12 1994-02-24 Schaeffler Waelzlager Kg Sich selbsttätig hydraulisch einstellender Ventilstößel
DE3628619A1 (de) * 1986-08-22 1988-03-03 Schaeffler Waelzlager Kg Sich selbsttaetig hydraulisch einstellender ventilstoessel

Also Published As

Publication number Publication date
DE3810436A1 (de) 1989-10-12
US4876997A (en) 1989-10-31
EP0335121A1 (fr) 1989-10-04
DE58900484D1 (de) 1992-01-09
JPH01280606A (ja) 1989-11-10
ES2028390T3 (es) 1992-07-01

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