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WO2003076770A1 - Procede de fabrication d'elements de mecanisme de distribution commutables dans un moteur a combustion interne et element de mecanisme de distribution commutable concerne - Google Patents

Procede de fabrication d'elements de mecanisme de distribution commutables dans un moteur a combustion interne et element de mecanisme de distribution commutable concerne Download PDF

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Publication number
WO2003076770A1
WO2003076770A1 PCT/EP2003/000305 EP0300305W WO03076770A1 WO 2003076770 A1 WO2003076770 A1 WO 2003076770A1 EP 0300305 W EP0300305 W EP 0300305W WO 03076770 A1 WO03076770 A1 WO 03076770A1
Authority
WO
WIPO (PCT)
Prior art keywords
locking
valve drive
internal combustion
play
combustion engine
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.)
Ceased
Application number
PCT/EP2003/000305
Other languages
German (de)
English (en)
Inventor
Christof Faria
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.)
IHO Holding GmbH and Co KG
Original Assignee
INA Schaeffler 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 INA Schaeffler KG filed Critical INA Schaeffler KG
Priority to AU2003252832A priority Critical patent/AU2003252832A1/en
Publication of WO2003076770A1 publication Critical patent/WO2003076770A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • F01L1/146—Push-rods
    • 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
    • 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
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0005—Deactivating valves
    • 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
    • F01L2305/00—Valve arrangements comprising rollers
    • 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
    • F01L2305/00—Valve arrangements comprising rollers
    • F01L2305/02—Mounting of rollers

Definitions

  • the invention relates to a method for producing switchable valve drive members of an internal combustion engine, wherein each valve drive member
  • 15 has at least two parts which are relatively axially or pivotable relative to one another and at least one locking means such as a piston, which locking means can be displaced from one towards the other for the purpose of locking in such a way that it overlaps a separating surface between the parts and in a receptacle such as one Bore the other part section
  • valve drive element produced here as a switchable roller tappet for a tappet rod drive
  • FIG. 25 Shown are two diametrically opposite pistons as locking means, which can be displaced into a receptacle of an outer part of the valve drive member for the locking case.
  • This locking play that is to say a relative path covered by an inner element having the locking means relative to the outer part during locking and cam lift, is necessary as a minimum play so that the locking can be implemented, but map on the other hand as an additional free travel on the valve lift.
  • this play fluctuates from cam follower to cam follower. The variance of this game is specified within a defined setting range for locking games.
  • the locking play on the individual cam follower increases due to wear. This is caused in particular by smoothing the material surfaces, material hardening, removal of the so-called edge supports, flattening, etc. Generally speaking, plastic and therefore permanent deformations take place in the locking area, which bring about the aforementioned increase in the locking play. It is clear that during the operation of the internal combustion engine, the increasing locking play may only lie within a defined spread range for locking games. The quality of the engine operation benefits greatly from a very small spreading range of the locking play for all similar valve train elements.
  • the object of the invention is therefore to provide a method for producing switchable valve drive elements, in which the setting range for locking achievement games can be significantly increased compared to previous setting ranges or to create a method of the type described above in which the disadvantages mentioned are eliminated.
  • the clearly wider setting range for the locking games brings with it, for example, a refinement of the grouping effort during assembly. It can also be ascertained that the measuring accuracy can be reduced during manufacture and assembly, or that there is less scrap or reworking due to failure to maintain the locking clearance tolerance.
  • the force is expediently and in accordance with a specification of the invention so applied that it only loads the components located in the locking area. Otherwise, after application of the pre-wear, components of the valve drive element could be undesirably deformed due to this "time-lapse method".
  • a roller which may be roller-supported, is intended as a direct cam counter-runner on the switchable valve drive element. But also in the area of one Contact surface of a push rod (in the case of training as a switchable roller tappet) could lead to undesired deformations if insufficient caution is taken.
  • Further expedient embodiments of the invention relate to how the force for achieving the pre-wear is applied. For example, it is proposed to apply the force in a pulsating manner, although one-time action is also taken into account. The latter measure may be advantageous for mass production.
  • the method according to the invention can be used equally with switchable valve drive elements such as the roller tappets mentioned, but also with cup tappets, support elements, valve drive bridges or lever groups (rocker arms, drag levers, or, for example, rocker arms).
  • switchable valve drive elements such as the roller tappets mentioned, but also with cup tappets, support elements, valve drive bridges or lever groups (rocker arms, drag levers, or, for example, rocker arms).
  • Another claim relates alternatively to a switchable valve drive member, in which, generally speaking, pre-wear is produced in the locking area between its receptacle and locking means.
  • FIG. 1 shows in a longitudinal section a valve drive member and designed as a roller tappet Figure 2 for a more detailed explanation of the measures according to the invention a diagram showing the setting ranges of the locking game.
  • valve drive element 1 shows a valve drive element 1, which is produced here as a roller tappet. It consists of an outer part 3, in which an inner part 2 is installed so that it can move relatively axially.
  • Two diametrically opposite locking means 4 are arranged in a receptacle 6 of the part 2 designed as a through bore. In the unlocked state of the valve drive element 1, these run completely in their receptacle 6 and are designed here as pistons.
  • the locking means 4 In a cam stroke position, the locking means 4 each have a complementary receptacle 7 in the outer part 3 for the locking case. In the case of the locking, which is shown in the drawing, which is accomplished here via the force of a compression spring 10, the locking means 4 thus overlap a separating surface 5 between the parts 2, 3 and run in sections in their receptacles 7.
  • valve drive member 1 has at one end of a roller 8 as a direct cam counter-rotor.
  • a force F is shown on a section of the inner part 2 opposite the roller 8.
  • This force F here stands for a defined force, which is explained in more detail below and which is applied before the valve drive element 1 is installed in the corresponding internal combustion engine in the tensioning direction of the valve drive element 1 in order to increase the locking play VS in a defined manner.
  • the locking game VS is also entered in Figure 1. It stands for a relative path, which the inner part 2 relative to the outer part 3 in the locking state shown . nd the Latches locking means 4 during cam stroke until locking means 4 is clamped in its seat 7 (see also introduction to description).
  • Force F is applied in a pulsating manner in order to advantageously anticipate a large area of the further setting process taking place during operation of the motor in the locking area (increasing the locking play VS).
  • FIG. 2 stands for a spreading range of the locking play during operation of the engine, within which the locking play VS of valve drive elements of the same type for internal combustion engines of the same type may move over a defined period t, advantageously the service life of the internal combustion engine.
  • the spreading range SB that is, an area between the minimum locking clearance VSmin and the maximum locking clearance VSma, kept relatively narrow.

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)

Abstract

L'invention concerne un élément de mécanisme de distribution commutable (1), comprenant au moins deux parties (2, 3) à mouvement axial ou oscillant relatif et au moins un moyen de blocage (4) tel qu'un piston, lequel moyen de blocage (4) peut être déplacé d'une partie (2) vers une autre partie (3) en vue d'un blocage, de manière à recouvrir une surface de séparation (5) entre ces parties (2, 3) et à s'étendre partiellement dans un logement (7) tel qu'un alésage de l'autre partie (3). Selon ladite invention, cet élément de mécanisme de distribution (1) présente une "pré-usure" dans la zone de blocage située entre le logement (7) et le moyen de blocage (4) avant son montage dans le moteur à combustion interne. En raison de cette "pré-usure" (tassement), seule une faible usure ultérieure apparaît dans la zone de blocage pendant le fonctionnement du moteur à combustion interne. Ainsi, lors du montage d'un galet suiveur, la plage de réglage (EB) pour le jeu de blocage (VS) augmente, de sorte que la disposition en groupes peut, par exemple, être effectuée avec moins de précision.
PCT/EP2003/000305 2002-03-12 2003-01-15 Procede de fabrication d'elements de mecanisme de distribution commutables dans un moteur a combustion interne et element de mecanisme de distribution commutable concerne Ceased WO2003076770A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003252832A AU2003252832A1 (en) 2002-03-12 2003-01-15 Method for the production of valve gear components of an internal combustion engine and controllable valve gear component

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10210747A DE10210747A1 (de) 2002-03-12 2002-03-12 Verfahren zur Herstellung von schaltbaren Ventiltriebsgliedern einer Brennkraftmaschine
DE10210747.5 2002-03-12

Publications (1)

Publication Number Publication Date
WO2003076770A1 true WO2003076770A1 (fr) 2003-09-18

Family

ID=27797687

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2003/000305 Ceased WO2003076770A1 (fr) 2002-03-12 2003-01-15 Procede de fabrication d'elements de mecanisme de distribution commutables dans un moteur a combustion interne et element de mecanisme de distribution commutable concerne

Country Status (3)

Country Link
AU (1) AU2003252832A1 (fr)
DE (1) DE10210747A1 (fr)
WO (1) WO2003076770A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1712749A3 (fr) * 2005-04-11 2009-06-24 Schaeffler KG Poussoir de soupape désactivable

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7055479B2 (en) 2003-12-20 2006-06-06 Ina-Schaeffler Kg Coupling mechanism
DE10360098B4 (de) * 2003-12-20 2015-03-12 Schaeffler Technologies AG & Co. KG Koppelmechanismus
DE102005020580B4 (de) * 2005-05-03 2017-06-14 Schaeffler Technologies AG & Co. KG Schaltbarer Nockenfolger
DE102006002967A1 (de) 2006-01-21 2007-08-09 Schaeffler Kg Ventiltrieb eines Verbrennungsmotors
DE102006029156A1 (de) * 2006-06-24 2007-12-27 Daimlerchrysler Ag Vorrichtung zur Minimierung von Spiel in einem Ventiltrieb einer Brennkraftmaschine und Verfahren hierzu
DE102007002787A1 (de) 2007-01-18 2008-07-24 Schaeffler Kg Schaltbares Abstützelement für einen Ventiltrieb einer Brennkraftmaschine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0323234A1 (fr) * 1987-12-28 1989-07-05 Honda Giken Kogyo Kabushiki Kaisha Dispositif de commande de soupape pour moteur à combustion interne
US5351661A (en) * 1992-06-27 1994-10-04 Mercedes-Benz Ag Multi-cylinder internal combustion engine valve actuator
EP0652353A1 (fr) * 1993-11-08 1995-05-10 Mercedes-Benz Ag Dispositif de commande des soupapes d'un moteur à combustion interne
DE19604866A1 (de) * 1996-02-10 1997-08-14 Schaeffler Waelzlager Kg Schaltbares Abstützelement für einen Schlepphebeltrieb einer Brennkraftmaschine
EP0843078A1 (fr) * 1996-11-19 1998-05-20 Honda Giken Kogyo Kabushiki Kaisha Dispositif de commande de soupapes pour moteur à combustion interne
DE19804952A1 (de) * 1998-02-07 1999-08-12 Daimler Chrysler Ag Abschaltbarer Ventiltrieb für ein Gaswechselventil einer Brennkraftmaschine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02140407A (ja) * 1988-08-01 1990-05-30 Honda Motor Co Ltd 多気筒エンジンのシリンダヘッド構造
DE4404683C1 (de) * 1994-02-15 1995-03-02 Daimler Benz Ag Verfahren zur Minimierung von Spiel in einem Ventiltrieb
DE19637066A1 (de) * 1996-09-12 1998-03-19 Mwp Mahle J Wizemann Pleuco Gm Ventilbetätigungseinrichtung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0323234A1 (fr) * 1987-12-28 1989-07-05 Honda Giken Kogyo Kabushiki Kaisha Dispositif de commande de soupape pour moteur à combustion interne
US5351661A (en) * 1992-06-27 1994-10-04 Mercedes-Benz Ag Multi-cylinder internal combustion engine valve actuator
EP0652353A1 (fr) * 1993-11-08 1995-05-10 Mercedes-Benz Ag Dispositif de commande des soupapes d'un moteur à combustion interne
DE19604866A1 (de) * 1996-02-10 1997-08-14 Schaeffler Waelzlager Kg Schaltbares Abstützelement für einen Schlepphebeltrieb einer Brennkraftmaschine
EP0843078A1 (fr) * 1996-11-19 1998-05-20 Honda Giken Kogyo Kabushiki Kaisha Dispositif de commande de soupapes pour moteur à combustion interne
DE19804952A1 (de) * 1998-02-07 1999-08-12 Daimler Chrysler Ag Abschaltbarer Ventiltrieb für ein Gaswechselventil einer Brennkraftmaschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1712749A3 (fr) * 2005-04-11 2009-06-24 Schaeffler KG Poussoir de soupape désactivable

Also Published As

Publication number Publication date
AU2003252832A1 (en) 2003-09-22
DE10210747A1 (de) 2003-10-02

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