EP0212162B1 - Poussoir de soupape à réglage hydraulique automatique - Google Patents

Poussoir de soupape à réglage hydraulique automatique Download PDF

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Publication number
EP0212162B1
EP0212162B1 EP86108970A EP86108970A EP0212162B1 EP 0212162 B1 EP0212162 B1 EP 0212162B1 EP 86108970 A EP86108970 A EP 86108970A EP 86108970 A EP86108970 A EP 86108970A EP 0212162 B1 EP0212162 B1 EP 0212162B1
Authority
EP
European Patent Office
Prior art keywords
guide sleeve
inner piston
oil
bore
piston
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
EP86108970A
Other languages
German (de)
English (en)
Other versions
EP0212162A1 (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 EP0212162A1 publication Critical patent/EP0212162A1/fr
Application granted granted Critical
Publication of EP0212162B1 publication Critical patent/EP0212162B1/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, which is arranged in a guide bore of a cylinder head of an internal combustion engine, and against whose end face a control cam runs and which, on the other hand, rests with a second end face against the end of a valve stem
  • the valve tappet consisting of a cup-shaped housing exists, which comprises a hollow cylindrical wall, which is closed at one end by a bottom, against which the control cam runs from the outside, and which has a cylindrical guide sleeve concentric to the hollow cylindrical wall, which extends from the bottom to the center of a Disc part extends, which merges with its outer circumference into the hollow cylindrical wall of the housing, the disc part and the guide sleeve being connected to one another in a liquid-tight manner, as a result of which between the hollow cylindrical wall and the cylindrical F an annular oil reservoir is limited, which is supplied with oil through a bore leading to the outside, the actual hydraulic lash adjuster being guided in the guide sleeve, which is
  • valve lifters are e.g. known from EP-A 0 030 781.
  • oil is transferred from the outer annular oil storage space into the annular space - and from there into the central oil storage space arranged in the inner piston - at a location that is arranged at a short distance from the bottom of the tappet.
  • the outer annular oil reservoir is only partially filled with oil, or at least contains a - albeit small - portion of air. If the oil present in the central oil reservoir is needed to fill up the high-pressure chamber when the engine is started, the air located in the outer annular oil reservoir at the upper end will be sucked into the central oil reservoir.
  • the invention has for its object to ensure by simple constructional measures that air settling at the upper end of the outer annular oil reservoir cannot be sucked into the central oil reservoir.
  • the invention solves this problem in that the inlet opening is located in the vicinity of the end of the guide sleeve facing away from the floor and opens into a longitudinal groove extending over a relatively small part of the circumference of the guide sleeve, which is arranged in the bore of the guide sleeve, towards the floor extends there and passes over the annular space into the oil transfer opening.
  • the plunger shown in Fig. 1 consists of the cup-shaped housing 1, which consists of the hollow cylindrical wall 2 and the bottom 3 integral therewith.
  • this housing an inner part 4 is arranged, which is formed from the disc part 5 and the cylindrical guide sleeve 6.
  • these two parts are firmly connected to one another by crimping.
  • additional welding, soldering or the like is possible at this point.
  • 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 cylindrical guide sleeve 6 engages on the end face in a groove in the inner surface 10 of the base 3.
  • the guide sleeve 6 has an enlarged inner diameter 11 um to give space to a plate washer 12, with which the hydraulic play compensation element 13 is secured against slipping out of the bore of the guide sleeve 6.
  • the annular cavity which is delimited by the hollow cylindrical wall 2, the disk part 5, the cylindrical guide sleeve 6 and the inner surface 10 of the base 3, forms an annular oil reservoir 14 which supplies oil from the outside through the bore 15 arranged in the circumferential groove 8 can be.
  • the hydraulic lash adjuster 13 consists of the outer piston 16, which is slidably guided in the guide sleeve 6, and which in turn slides and receives the inner piston 17 with tight play.
  • the latter has a central oil reservoir 18, which is in fluid communication with the annular space 20 between the inner piston 17 and the guide sleeve 6 by means of the recess 19 in the inner surface 10 of the base 3.
  • an inlet opening 26 is provided in the vicinity of the end of the guide sleeve 6 facing away from the bottom 3, which opens into a longitudinal groove 27, which is arranged in the bore wall of the guide sleeve 6 and itself extends towards the bottom 3.
  • the oil from the outer annular storage space 14 thus passes through the inlet opening 26 into the longitudinal groove 27, from there into the annular space 20 and via the recess 19 into the central oil storage space 18. Air that may settle in the outer oil storage space 14 at the upper end cannot therefore get into the central oil reservoir 18.
  • the plunger design shown in FIG. 2 differs from that of FIG. 1 essentially by the different design of the outer cup-shaped housing 1.
  • the guide sleeve 28 is formed here in one piece with the base 3 and the outer oil storage space 14 is on its side facing away from the base 3 Ended by a separate disc part 29, which is caulked at its outer edge to the bore of the hollow cylindrical wall 2, and which is sealed against the end of the guide sleeve 28 by an O-ring 30 inserted therein.
  • the oil is transferred from the annular oil storage space 14 into the central oil storage space 18 through an inlet opening 31 provided in the guide sleeve 28 at its end facing away from the floor, which opens into the longitudinal groove 32 provided in the bore of the guide sleeve 28.
  • the oil passes into the annular space 33 between the inner piston 17 and the guide sleeve 28, and from there through a recess 34 provided at the front end of the inner piston 17 finally into the central oil storage space 18.

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

Claims (3)

1. - Poussoir de soupape à réglage hydraulique automatique agencé dans un alésage de guidage d'une tête de cylindre d'un moteur à combustion interne, lequel poussoir de soupape comporte une face frontale attaquée par une came de commande et s'appuie de l'autre côté par une deuxième face frontale, contre l'extrémité d'une tige de soupape, le poussoir de soupape comprenant un boîtier en forme de cloche (1), qui comporte une paroi cylindrique creuse (2) fermée à l'une de ses extrémités par un fond (3) qui est attaqué extérieurement par la came de commande, lequel boîtier comporte une douille de guidage cylindrique (6, 28) qui est concentrique à la paroi cylindrique creuse et s'étend à partir du fond (3) jusqu'au centre d'une pièce en forme de disque (5, 29) qui se raccorde, par sa périphérie extérieure, à la paroi cylindrique creuse (2) du boîtier (1), ladite pièce en forme de disque (5, 29) et la douille de guidage (6, 28) étant reliées entre elles de manière étanche aux liquides de telle sorte que la paroi cylindrique creuse (2) et la douille de guidage cylindrique (6, 28) délimitent entre elles un réservoir annulaire d'huile (14) qui est alimenté en huile par un alésage (15) débouchant à l'extérieur, tandis que l'élément de compensation de jeu (13) proprement dit est guidé en déplacement longitudinal dans la douille de guidage et comporte un piston intérieur (17) et un piston extérieur (16) recouvrant ce dernier, les deux pistons étant guidés en déplacement longitudinal l'un dans l'autre et délimitant conjointement une chambre à pression d'huile (23) reliée par un alésage (21) ménagé dans le piston intérieur (17) et fermé par un clapet antiretour (22) à un réservoir central d'huile (18) qui est agencé dans le piston intérieur (17) et est délimité d'un côté par la paroi du piston intérieur (17) et de l'autre côté par la surface interne (10) du fond (3) du boîtier (1) contre laquelle le piston intérieur (17) s'appuie frontalement, tandis que le piston extérieur (16) est monté en déplacement longitudinal dans la douille de guidage cylindrique (6, 28) et s'appuie par son extrémité fermée, contre l'extrémité de la tige de soupape, et un orifice de transfert d'huile (19, 34) entre le réservoir central d'huile (18) et un espace annulaire (33, 20) formé entre le piston intérieur (17) et la douille de guidage (6, 28) est prévu à l'extrémité du piston intérieur (17) qui fait face au fond (3) tandis que la douille de guidage (6, 28) comporte en un endroit distant du fond (3) un orifice d'entrée (26, 31) qui est relié à l'espace annulaire (33, 20) lequel poussoir est caractérisé en ce que l'orifice d'entrée (26, 31) est situé à proximité de l'extrémité de la douille de guidage (6, 28) opposée au fond (3) et débouche dans une gorge longitudinale (27, 32) qui s'étend dans une zone partielle relativement petite de la périphérie de la douille de guidage (6, 28), ladite gorge étant agencée dans l'alésage de la douille de guidage (6, 28) et s'étendant en direction du fond (3) pour se raccorder au niveau du fond, par l'intermédiaire de l'espace annulaire (33, 20), à l'orifice de transfert d'huile (19, 34).
2.- Poussoir de soupape selon la revendication 1 caractérisé en ce que l'orifice de transfert d'huile au réservoir central d'huile (18) est formé par un évidement (19) ménagé dans le fond (3) et qui recouvre la surface de contact entre le piston intérieur (17) et la surface interne (10) du fond (3).
3.- Poussoir de soupape selon la revendication 1, caractérisé en ce que l'orifice de transfert d'huile au réservoir central d'huile (18) est formé par au moins un évidement (34) prévu à l'extrémité frontale du piston intérieur (17).
EP86108970A 1985-08-08 1986-07-02 Poussoir de soupape à réglage hydraulique automatique Expired - Lifetime EP0212162B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853528432 DE3528432A1 (de) 1985-08-08 1985-08-08 Sich selbsttaetig hydraulisch einstellender ventilstoessel
DE3528432 1985-08-08

Publications (2)

Publication Number Publication Date
EP0212162A1 EP0212162A1 (fr) 1987-03-04
EP0212162B1 true EP0212162B1 (fr) 1990-12-27

Family

ID=6277997

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86108970A Expired - Lifetime EP0212162B1 (fr) 1985-08-08 1986-07-02 Poussoir de soupape à réglage hydraulique automatique

Country Status (6)

Country Link
US (1) US4745889A (fr)
EP (1) EP0212162B1 (fr)
JP (1) JPS6235004A (fr)
BR (1) BR8603773A (fr)
DE (2) DE3528432A1 (fr)
ES (1) ES293880Y (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3153091B2 (ja) * 1994-03-10 2001-04-03 株式会社荏原製作所 廃棄物の処理方法及びガス化及び熔融燃焼装置
DE3810436A1 (de) * 1988-03-26 1989-10-12 Schaeffler Waelzlager Kg Sich selbsttaetig hydraulisch einstellender ventilstoessel
DE3828635A1 (de) * 1988-08-24 1990-03-08 Daimler Benz Ag Verfahren zum herstellen von tassenstoesseln fuer hubkolbenmaschinen
JPH02126005U (fr) * 1989-03-28 1990-10-17
IT1229355B (it) * 1989-05-23 1991-08-08 Eaton Automotive Spa Punteria idraulica con circolazione dell'olio lungo un percorso sviluppantesi per 360[ su due livelli.
JP2782087B2 (ja) * 1989-06-02 1998-07-30 日鍛バルブ株式会社 直動型油圧ラッシュアジャスタ
JP2782088B2 (ja) * 1989-06-02 1998-07-30 日鍛バルブ株式会社 直動型油圧ラッシュアジャスタ
DE4138985C2 (de) * 1990-12-07 2001-03-22 Volkswagen Ag Hydraulische Längenausgleichsvorrichtung, insbesondere Spielausgleichsvorrichtung für ein Hubventil
IT1251311B (it) * 1991-09-12 1995-05-08 Eaton Engine Lifters Spa Corpo di punteria idraulica ad attacco diretto con serbatoio ridotto per olio
US5280771A (en) * 1992-09-23 1994-01-25 Eaton Corporation Direct acting hydraulic tappet
DE4340035B4 (de) * 1992-12-10 2006-02-23 Ina-Schaeffler Kg Mechanischer Tassenstößel
DE4332110A1 (de) * 1993-09-22 1995-03-23 Schaeffler Waelzlager Kg Stößel mit hydraulischem Ventilspielausgleich
US5922090A (en) 1994-03-10 1999-07-13 Ebara Corporation Method and apparatus for treating wastes by gasification
DE19733027A1 (de) * 1997-07-31 1999-02-04 Schaeffler Waelzlager Ohg Hydraulische Ventilspielausgleichsvorrichtung
KR100559622B1 (ko) * 1999-07-30 2006-03-10 현대자동차주식회사 흡배기 밸브의 타음 저감용 유압 간극 조절기 구조
JP5081667B2 (ja) * 2008-02-28 2012-11-28 カルソニックカンセイ株式会社 気体圧縮機
JP7226173B2 (ja) * 2019-07-30 2023-02-21 株式会社デンソー 燃料噴射システムの制御装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5965508A (ja) * 1982-10-08 1984-04-13 Aisin Seiki Co Ltd Ｏｈｃダイレクトタイプ用油圧リフタ

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3509858A (en) * 1968-05-20 1970-05-05 Gen Motors Corp Overhead cam valve lifter
US3658038A (en) * 1971-01-04 1972-04-25 Johnson Products Inc Tappet for overhead camshaft engine
DE2758957A1 (de) * 1977-12-30 1979-07-05 Wizemann Gmbh U Co J Hydraulischer tassenstoessel
US4470381A (en) * 1979-12-05 1984-09-11 Eaton Corporation Hydraulic tappet for direct-acting valve gear
US4367701A (en) * 1979-12-05 1983-01-11 Eaton Corporation Acting valve gear
EP0030781B1 (fr) * 1979-12-05 1989-12-13 Eaton Corporation Poussoir hydraulique pour vanne à entrainement direct
DE3006644A1 (de) * 1980-02-22 1981-09-03 Motomak Motorenbau, Maschinen- u. Werkzeugfabrik, Konstruktionen GmbH, 8070 Ingolstadt Ventilstoessel fuer brennkraftmaschinen mit obenliegender nockenwelle
EP0140674A3 (fr) * 1983-10-28 1986-05-28 Eaton Corporation Elément d'ajustage de jeu avec une surface d'usure noyée
EP0145445B1 (fr) * 1983-12-07 1989-03-15 Eaton Corporation Poussoir de soupape hydraulique
DE3437478A1 (de) * 1984-10-12 1986-04-17 INA Wälzlager Schaeffler KG, 8522 Herzogenaurach Sich selbsttaetig hydraulisch einstellender ventilstoessel

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5965508A (ja) * 1982-10-08 1984-04-13 Aisin Seiki Co Ltd Ｏｈｃダイレクトタイプ用油圧リフタ

Also Published As

Publication number Publication date
ES293880U (es) 1986-11-01
JPS6235004A (ja) 1987-02-16
US4745889A (en) 1988-05-24
ES293880Y (es) 1987-07-01
JPH0445647B2 (fr) 1992-07-27
DE3528432A1 (de) 1987-02-19
BR8603773A (pt) 1987-03-10
DE3676587D1 (de) 1991-02-07
EP0212162A1 (fr) 1987-03-04

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