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EP2475849B1 - Sous ensemble pre assemble de commande de soupape pour moteur a combustion interne - Google Patents

Sous ensemble pre assemble de commande de soupape pour moteur a combustion interne Download PDF

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Publication number
EP2475849B1
EP2475849B1 EP10739891.9A EP10739891A EP2475849B1 EP 2475849 B1 EP2475849 B1 EP 2475849B1 EP 10739891 A EP10739891 A EP 10739891A EP 2475849 B1 EP2475849 B1 EP 2475849B1
Authority
EP
European Patent Office
Prior art keywords
pressure piston
bracket
housing
assembly according
drag lever
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.)
Not-in-force
Application number
EP10739891.9A
Other languages
German (de)
English (en)
Other versions
EP2475849A1 (fr
Inventor
Wolfgang Christigen
Peter Sailer
Frank Himsel
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.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and Co KG
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 Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Publication of EP2475849A1 publication Critical patent/EP2475849A1/fr
Application granted granted Critical
Publication of EP2475849B1 publication Critical patent/EP2475849B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F01L1/2405—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically by means of a hydraulic adjusting device located between the cylinder head 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
    • F01L1/185—Overhead end-pivot rocking arms
    • 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
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/18—Rocking arms or levers
    • F01L2001/187—Clips, e.g. for retaining rocker arm on pivot
    • 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
    • F01L2307/00—Preventing the rotation of tappets

Definitions

  • the invention relates to a structural unit for a valve train of an internal combustion engine, with a hydraulic support element and a drag lever connected thereto via a clamp, which sits at one end via a dome in its underside on a crowned head of a pressure piston of the support, which pressure piston via its outer jacket extends in a bore of a pot-like housing of the support member, which clamp the calotte flanked with retaining strips along whose inner sides run in a guide zone on the outer surface of the pressure piston, wherein the housing has a passage for hydraulic fluid, which hydraulic fluid via a channel between the housing and the pressure piston to at least one passage in the pressure piston to a reservoir in this is conductive.
  • the state of the art is based on the documents DE 196 17 523 C2 (Clamp made of longitudinal metal strip), DE 102 49 560 A1 (Clip made of transverse metal band) as well US 6,543,402 B2 (wire clip ).
  • the pressure piston of the hydraulic support element of the respective structural unit runs freely rotatably in its housing.
  • the forces introduced can lead to component-destructive voltage peaks.
  • the elements may need to be made larger or it may be necessary to reduce the maximum speed to be traveled.
  • the object of the invention is therefore to provide a component of the type mentioned, in which the disadvantages are eliminated.
  • this object is achieved in that the guide zone is formed on the pressure piston at the same time as a rotation for this, wherein the pressure piston is defined rotationally mounted relative to the rocker arm.
  • the flax / depressions may be embossed, for example.
  • the pressure piston of the support When mounting the unit, therefore, the pressure piston of the support must be “directed” mounted / clipped with its guiding zone behind the retaining strips of the clip /, so that the corresponding passage is located in the side of almost tension-free area.
  • the passage through installation must assume a geodetically high positioning.
  • the housing preferably remains rotatable relative to the pressure piston, but can also be rotationally fixed relative thereto.
  • the Endan As a parenthesis, for example, is intended to a component made of sheet metal, the Endan assemblies either longitudinally or transversely.
  • the clip can also consist of wire with their retaining strips. It is important in this context, undisturbed by the clamp, free Verschwenkbewegige the finger lever on the head of the support.
  • Simple measures of a supply of the hydraulic fluid to the reservoir in the pressure piston are the subject of another subclaim. Accordingly, starting from at least one passage in the housing, preferably intended to a Ringnutabgriff in the region of a separation surface between the pressure piston and the housing.
  • the at least one passage and the at least one passage are preferably shown as bores, with windows or the like also being suitable.
  • Drawn is a structural unit 1 for a valve train of an internal combustion engine. This is formed from a hydraulic support element 2 and a drag lever 4 connected thereto via a bracket 3. The latter is seated at one end 5 via a dome 6 located in its underside 7 on a crowned head 8 of a pressure piston 9 of the support element 2. The pressure piston 9 extends over its outer casing 10 in a bore 11 of a cup-shaped housing 12 of the support element 2. At the other end 16, the drag lever 4 at the bottom 7 a system 32 for a shaft of a gas exchange valve.
  • the housing 12 has a passage 17 (bore) for hydraulic fluid, which is via a channel 18 (Ringnutabgriff) between the housing 12 and the plunger 9 to the passage 19 (bore) in the pressure piston 9 and from there to a reservoir 20 in this conductive ,
  • the aforementioned bracket 3 flanks the cap 6 with two retaining strips 13 along.
  • Inner sides 14 run in a guide zone 15 on the outer jacket 10 of the pressure piston 9.
  • the guide zone 15 consists of two transverse to the head transverse flax 21 on the outer jacket 10 of the pressure piston 9.
  • the flax 21 have two axially opposite heels 30.
  • the passage 19 is thus "forcibly" in the neutral, virtually stress-free region of the pressure piston 9. A risk of breakage after continuous stress during operation is eliminated. Possibly. can be used thin-walled than previously executed components.
  • the bracket 3 extends longitudinally with its retaining strips 13 on the underside 7 of the finger lever 4.
  • a final extension 23 of the bracket 3 is bent around an end face 24 of the finger lever 4 at one end 5.
  • Another end extension 25 extends around a transverse bar 26 of a recess 27 of a transverse strut 28 of the cross-section here U-shaped drag lever 4. Within the recess 27, a cam roller 31 is received, wherein a Gleitabgriff is conceivable and provided.

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)
  • Pistons, Piston Rings, And Cylinders (AREA)

Claims (9)

  1. Unité structurelle (1) pour une commande de soupape d'un moteur à combustion interne, comprenant un élément de support hydraulique (2) ainsi qu'un levier culbuteur (4) connecté à celuici par le biais d'une pince (3), lequel levier culbuteur repose à une extrémité (5) par le biais d'une calotte (6) disposée dans sa partie inférieure (7) sur une tête bombée (8) d'un piston de pression (9) de l'élément de support (2), lequel piston de pression (9) s'étend sur son enveloppe extérieure (10) dans un alésage (11) d'un boîtier (12) en forme de pot de l'élément de support (2), laquelle pince (3) borde la calotte (6) le long de celle-ci par des bandes de retenue (13) dont les côtés intérieurs (14) s'étendent dans une zone de guidage (15) sur l'enveloppe extérieure (10) du piston de pression (9), le boîtier (12) possédant une sortie (17) pour du fluide hydraulique, lequel fluide hydraulique peut être guidé par le biais d'un canal (18) entre le boîtier (12) et le piston de pression (9) jusqu'à au moins un passage (19) dans le piston de pression (9) jusqu'à un réservoir (20) dans celui-ci, caractérisée en ce que la zone de guidage (15) sur le piston de pression (9) est également réalisée sous forme de fixation contre la rotation pour celui-ci, le piston de pression (9) étant incorporé de manière définie et orientée en termes de rotation par rapport au levier culbuteur (4).
  2. Unité structurelle selon la revendication 1, caractérisée en ce que la zone de guidage (15) au niveau du piston de pression (9) est constituée d'un renfoncement/d'un méplat ou de deux renfoncements ou méplats (21) diamétralement opposés, au niveau desquels sont guidés les côtés intérieurs (14) des bandes de retenue (13) de la pince (3), une ligne de connexion des renfoncements ou des méplat (21) s'étendant transversalement à l'axe longitudinal du levier.
  3. Unité structurelle selon la revendication 1 ou 2, caractérisée en ce que le piston de pression (9) repose dans le boîtier (12) de telle sorte que son passage (19) s'étende transversalement à la direction longitudinale du levier.
  4. Unité structurelle selon la revendication 1 ou 2, qui est ou peut être incorporée dans une culasse du moteur à combustion interne, laquelle culasse présente un alésage de guidage, s'étendant obliquement par rapport à une verticale, pour l'élément de support, caractérisée en ce que le piston de pression (9) repose dans le boîtier (12) de telle sorte que son passage (19), lors de l'installation de l'élément de support (2) dans l'alésage de guidage, s'étende sur la périphérie au niveau d'un emplacement situé géodésiquement haut.
  5. Unité structurelle selon la revendication 1, caractérisée en ce que le canal (19) entre le boîtier (12) et le piston de pression (9) se compose d'une rainure annulaire (22) découpée à partir de la sortie (17) dans le boîtier (12) dans l'alésage (11) du boîtier (12), laquelle rainure annulaire est en liaison fluidique directe avec le passage (19) dans l'enveloppe extérieure (10) du piston de pression (9).
  6. Unité structurelle selon la revendication 1, caractérisée en ce que la pince (3) se compose d'un fil métallique ou d'une bande de tôle.
  7. Unité structurelle selon la revendication 6, caractérisée en ce que, dans le cas de la réalisation de la pince (3) sous forme d'une bande de tôle, celle-ci s'étend généralement longitudinalement avec ses bandes de retenue (13) sur la partie inférieure (7) du levier culbuteur (4), l'une de ses sections d'extrémité (23) s'étendant sous forme courbe autour d'un embout (24) du levier culbuteur (4) à une extrémité (5) et son autre section d'extrémité (25) s'étendant sous forme courbe autour d'une barre transversale (26) d'un évidement (27) d'une traverse (28) du levier culbuteur (4) de section transversale en forme de U.
  8. Unité structurelle selon la revendication 6, caractérisée en ce que, dans le cas de la réalisation de la pince (3) sous forme d'une bande de tôle, celle-ci s'étend généralement transversalement à la direction longitudinale du levier au niveau de la partie inférieure (7) du levier culbuteur (4), lequel levier culbuteur (4) est réalisé avec une section transversale essentiellement en forme de U, une section d'extrémité respective de la pince (3) s'étendant sous forme courbe en forme d'étrier à l'extérieur autour d'une paroi longitudinale (29) du levier culbuteur (4).
  9. Unité structurelle selon la revendication 6, caractérisée en ce que les renfoncements ou les méplats (21) du piston de pression (9) sont réalisés par une opération sans enlèvement de copeaux comme par gaufrage/matriçage, de telle sorte qu'il se forme au moins un épaulement (30) du côté de la tête.
EP10739891.9A 2009-09-08 2010-07-29 Sous ensemble pre assemble de commande de soupape pour moteur a combustion interne Not-in-force EP2475849B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009040608A DE102009040608A1 (de) 2009-09-08 2009-09-08 Baueinheit für einen Ventiltrieb einer Brennkraftmaschine
PCT/EP2010/061012 WO2011029667A1 (fr) 2009-09-08 2010-07-29 Module pour un mécanisme de distribution d'un moteur à combustion interne

Publications (2)

Publication Number Publication Date
EP2475849A1 EP2475849A1 (fr) 2012-07-18
EP2475849B1 true EP2475849B1 (fr) 2013-10-16

Family

ID=42710555

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10739891.9A Not-in-force EP2475849B1 (fr) 2009-09-08 2010-07-29 Sous ensemble pre assemble de commande de soupape pour moteur a combustion interne

Country Status (5)

Country Link
US (1) US8689754B2 (fr)
EP (1) EP2475849B1 (fr)
CN (1) CN102482954B (fr)
DE (1) DE102009040608A1 (fr)
WO (1) WO2011029667A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012208238A1 (de) * 2012-05-16 2013-11-21 Schaeffler Technologies AG & Co. KG Ventiltriebsbetätigungseinrichtung für eine Brennkraftmaschine
DE102014208005A1 (de) 2014-04-29 2015-10-29 Schaeffler Technologies AG & Co. KG Baueinheit eines Ventiltriebs einer Brennkraftmaschine
DE102019113959A1 (de) * 2019-05-24 2020-11-26 Schaeffler Technologies AG & Co. KG In einer Aufnahme eines Zylinderkopfes einer Brennkraftmaschine sitzendes, druckölanschlussfreies, hydraulischen Abstützelement

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2350520A1 (de) * 1973-10-09 1975-04-10 Daimler Benz Ag Vorrichtung zum einstellen und halten des ventilspiels bei brennkraftmaschinen, insbesondere bei kraftfahrzeug-brennkraftmaschinen
DE19617523C2 (de) 1996-05-02 2001-11-08 Schaeffler Waelzlager Ohg Sicherung für Betätigungshebel von Ventilsteuerungen für Brennkraftmaschinen
US6047675A (en) * 1998-11-10 2000-04-11 General Motors Corporation Retainer clip and valve actuator subassembly
US6543402B2 (en) 2000-04-12 2003-04-08 Delphi Technologies, Inc. Load biasing retainer clip and valve actuator subassembly
DE10249560A1 (de) 2002-10-24 2004-05-06 Ina-Schaeffler Kg Schlepphebel eines Ventiltriebs einer Brennkraftmaschine
JP2004263608A (ja) * 2003-02-28 2004-09-24 Mitsubishi Motors Corp 内燃機関の動弁装置
US20050183686A1 (en) * 2004-02-25 2005-08-25 Hiroki Fujii Hydraulic lash adjuster
DE102004041231A1 (de) * 2004-08-26 2006-03-30 Ina-Schaeffler Kg Verbindungselement zur verliersicheren Halterung eines hebelartigen Nockenfolgers
DE102005010750A1 (de) * 2005-03-09 2006-09-14 Schaeffler Kg Baueinheit eines Ventiltriebs einer Brennkraftmaschine
DE102005036918A1 (de) * 2005-08-05 2007-02-08 Schaeffler Kg Verbindungselement zur verliersicheren Halterung eines hebelartigen Nockenfolgers
DE102005040694A1 (de) * 2005-08-27 2007-03-01 Schaeffler Kg Ventiltrieb mit mechanischer Ventilspieleinstellung und Verfahren zu dessen Montage
JP5137627B2 (ja) * 2008-03-07 2013-02-06 株式会社オティックス ロッカアームユニット及びロッカアームユニットの組立方法
KR20110000582A (ko) * 2008-06-18 2011-01-03 코요 베어링즈 유에스에이, 엘엘씨 커플링 장치

Also Published As

Publication number Publication date
CN102482954A (zh) 2012-05-30
CN102482954B (zh) 2014-10-29
EP2475849A1 (fr) 2012-07-18
US8689754B2 (en) 2014-04-08
WO2011029667A1 (fr) 2011-03-17
US20120167847A1 (en) 2012-07-05
DE102009040608A1 (de) 2011-03-10

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