WO2008068306A1 - Levier entraîneur commutable d'un mécanisme de commande de soupapes d'un moteur à combustion interne - Google Patents

Levier entraîneur commutable d'un mécanisme de commande de soupapes d'un moteur à combustion interne Download PDF

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Publication number
WO2008068306A1
WO2008068306A1 PCT/EP2007/063414 EP2007063414W WO2008068306A1 WO 2008068306 A1 WO2008068306 A1 WO 2008068306A1 EP 2007063414 W EP2007063414 W EP 2007063414W WO 2008068306 A1 WO2008068306 A1 WO 2008068306A1
Authority
WO
WIPO (PCT)
Prior art keywords
coupling
bore
lever
coupling piston
piston
Prior art date
Application number
PCT/EP2007/063414
Other languages
German (de)
English (en)
Inventor
Stefan Gemein
Joachim Krause
Jens Lang
Original Assignee
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 Schaeffler Kg filed Critical Schaeffler Kg
Publication of WO2008068306A1 publication Critical patent/WO2008068306A1/fr

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
    • F01L1/18—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
    • 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
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • F01L13/0036—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
    • 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
    • F01L2001/186—Split rocking arms, e.g. rocker arms having two articulated parts and means for varying the relative position of these parts or for selectively connecting the parts to move in unison

Definitions

  • the invention relates to a switchable rocker arm of a valve train of an internal combustion engine, with an outer and extending between the arms or on the arm inner lever, both levers are relatively pivotable relative to each other and the outer lever at one end on its underside a contact surface for a head of a support element and -
  • a system for at least one gas exchange valve is immanent, wherein in the region of the contact surface a bore extends with at least one coupling piston, which is engageable in sections for a coupling case of the lever with a driver surface of the decoupling in the decoupling inner lever and wherein on an upper side of at least the Inner lever a contact surface is applied for a lifting cam.
  • Such a drag lever is apparent from the considered as generic forming DE 10 2004 051 422 A1.
  • a stop bush is pressed on the end side. Through the latter runs a coupling piston extending pipe section, which passes outside in a plate area.
  • the coupling piston learns about the plate area at the stop bushing a travel limit in the coupling direction.
  • the bush also serves as a single end support for the helical compression spring.
  • an inner end region of the bush can serve as a travel limit for the coupling piston in its decoupling direction. It is disadvantageous in the aforementioned embodiment that the manufacturing and assembly costs for the socket is relatively high. So this has to be introduced exactly defined in terms of their insertion force and their way into the bore for the coupling piston.
  • the object of the invention is therefore to provide a drag lever of the aforementioned type, in which the cited disadvantages are eliminated by simple means.
  • the bore is represented by two stepped sections in which the coupling piston consisting of two stepped, complementary jacket areas extends, which section / jacket area is coupled to the smaller diameter, wherein a travel limit of the coupling piston in its coupling direction via a system whose annular region is shown between its jacket regions on an annular collar between the sections of the bore.
  • the bore can also have a further annular collar in decoupling direction, by means of which the decoupling position of the coupling piston can be fixed.
  • the ring area and the ring collar can be made cone-shaped.
  • the coupling piston should be integrally formed. Possibly. is also the two-part training conceivable and provided.
  • the entire coupling mechanism can build axially and possibly also radially smaller.
  • the driver surface of the swiveling in the decoupling inner lever can either be designed as a shell-like underside on a transverse region of the inner lever or as a bore / window, under or into which the coupling piston moves in the coupling case.
  • the coupling piston is designed with its bore as a so-called “longitudinal locking device.” It is likewise particularly preferred to allow the coupling piston to slide obliquely under the corresponding driving surface.
  • the drag lever according to the invention can be designed either as Ventilhubabschalter or as Ventilhubumschalter.
  • the invention provides simple measures of another end support the at least one compression spring. This can rest on a separate stop ring, which is at least indirectly attached in the remote coupling, larger bore portion. Although the stop ring can be pressed directly into this bore, it is also conceivable and intended to fix it in the bore via a simple snap ring or the like, which snap ring extends in a corresponding annular groove of the bore.
  • FIGURE is a partial longitudinal section through the drag lever according to the invention in the region of the coupling mechanism.
  • the other end area with a system for the gas exchange valve is not shown in the drawing for the sake of simplicity.
  • the drag lever 1 consists of an outer lever 3, between the arms 2 a pivotable inner lever 4 extends. On an underside 5 of the outer lever 3, a contact surface 6 for supporting the drag lever 1 on a head of a support element is applied at one end. At the other end of the finger lever 1, the outer lever 3, also on the underside 5, a system for at least one gas exchange valve.
  • This bore 7 consists of two sections 13,
  • the coupling piston 8 In the region of its outer end 21 remote from the coupling, the coupling piston 8 has a blind hole 28. In this, a helical compression spring 20 is supported at one end.
  • the stop ring 22 sits.
  • the stop ring 22 undergoes an axial travel limit to the outside on a securing element 25 such as a snap ring which extends in an unspecified annular groove of the bore 7.
  • this bore 7 can be designed to have a total of three grades.
  • a stop for the coupling piston 8 in the decoupling can be done via system whose outer end 21 on the stop ring 22.
  • the coupling mechanism is designed so that the helical compression spring 20 does not "block” in this case. Due to the sectional arrangement of the helical compression spring 20 in the blind hole 28 of the coupling piston 8, a contribution is made for an axially relatively short-built coupling mechanism.

Landscapes

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

Abstract

La présente invention concerne un levier entraîneur (1) commutable d'un mécanisme de commande de soupapes d'un moteur à combustion interne, avec un levier extérieur et un levier intérieur (3, 4), une surface de contact (6) pour une tête d'un élément d'appui étant immanente au levier extérieur (3) au niveau d'une extrémité, dans la zone de la surface de contact (6) s'étendant un perçage (7) avec au moins un piston de couplage (8) qui peut être mis en prise par endroits avec une surface d'entraînement (9) du levier intérieur (4) en cas de couplage des leviers (3, 4), le perçage (7) étant constitué de deux sections (13, 14) étagées, dans lesquelles s'étend le piston de couplage (8) se composant de deux zones d'enveloppe (15, 16) complémentaires, étagées, laquelle section (13)/zone d'enveloppe (15) dotée du plus petit diamètre se trouvant côté couplage et une limitation de course du piston de couplage (8) dans sa direction de couplage étant constituée par un appui de sa zone annulaire (17) entre ses zones d'enveloppe (15, 16) sur un collet annulaire (18) entre les sections (13, 14) du perçage (7).
PCT/EP2007/063414 2006-12-08 2007-12-06 Levier entraîneur commutable d'un mécanisme de commande de soupapes d'un moteur à combustion interne WO2008068306A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006057894A DE102006057894A1 (de) 2006-12-08 2006-12-08 Schaltbarer Schlepphebel eines Ventiltriebs einer Brennkraftmaschine
DE102006057894.5 2006-12-08

Publications (1)

Publication Number Publication Date
WO2008068306A1 true WO2008068306A1 (fr) 2008-06-12

Family

ID=39154083

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/063414 WO2008068306A1 (fr) 2006-12-08 2007-12-06 Levier entraîneur commutable d'un mécanisme de commande de soupapes d'un moteur à combustion interne

Country Status (2)

Country Link
DE (1) DE102006057894A1 (fr)
WO (1) WO2008068306A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109915224A (zh) * 2012-11-05 2019-06-21 伊顿公司 用于接合凸轮的摇臂

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009033634A1 (de) 2009-07-17 2011-01-20 Schaeffler Technologies Gmbh & Co. Kg Schaltbarer Schlepphebel
DE102015223565A1 (de) 2015-11-27 2017-06-01 Schaeffler Technologies AG & Co. KG Schaltbarer Schlepphebel eines Ventiltriebs
DE102016212480A1 (de) 2016-07-08 2018-01-11 Schaeffler Technologies AG & Co. KG Variabler Ventiltrieb eines Verbrennungskolbenmotors
DE102017101792B4 (de) 2017-01-31 2018-11-15 Schaeffler Technologies AG & Co. KG Variabler Ventiltrieb eines Verbrennungskolbenmotors
DE102017106689A1 (de) 2017-03-29 2018-10-04 Schaeffler Technologies AG & Co. KG Variabler Ventiltrieb eines Verbrennungskolbenmotors
DE102017114061A1 (de) 2017-06-26 2018-12-27 Schaeffler Technologies AG & Co. KG Ventiltrieb eines Verbrennungsmotors
DE102017114933B3 (de) 2017-07-05 2018-08-23 Schaeffler Technologies AG & Co. KG Variabler Ventiltrieb eines Verbrennungskolbenmotors
DE102017129422A1 (de) 2017-12-11 2019-06-13 Schaeffler Technologies AG & Co. KG Variabler Ventiltrieb eines Verbrennungskolbenmotors
DE102017129419B4 (de) 2017-12-11 2022-07-14 Schaeffler Technologies AG & Co. KG Variabler Ventiltrieb eines Verbrennungskolbenmotors
DE102017129423A1 (de) 2017-12-11 2019-06-13 Schaeffler Technologies AG & Co. KG Schaltbarer Schlepphebel eines Ventiltriebs
DE102017129424A1 (de) 2017-12-11 2019-06-13 Schaeffler Technologies AG & Co. KG Variabler Ventiltrieb eines Verbrennungskolbenmotors
DE102018113801A1 (de) 2018-06-11 2019-12-12 Schaeffler Technologies AG & Co. KG Schaltbarer Schlepphebel eines Ventiltriebs
DE102018117335A1 (de) 2018-07-18 2020-01-23 Schaeffler Technologies AG & Co. KG Variabler Ventiltrieb eines Verbrennungskolbenmotors
DE102018125978A1 (de) * 2018-10-19 2020-04-23 Schaeffler Technologies AG & Co. KG Variabler Ventiltrieb eines Verbrennungskolbenmotors
DE102021129490A1 (de) 2021-11-12 2023-05-17 Schaeffler Technologies AG & Co. KG Variabler Ventiltrieb

Citations (6)

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Publication number Priority date Publication date Assignee Title
US4611558A (en) * 1984-10-12 1986-09-16 Toyota Jidosha Kabushiki Kaisha Valve actuating apparatus in internal combustion engine
US5544626A (en) * 1995-03-09 1996-08-13 Ford Motor Company Finger follower rocker arm with engine valve deactivator
US6318318B1 (en) * 2001-05-15 2001-11-20 Ford Global Technologies, Inc. Rocker arm assembly
US6966291B1 (en) * 2004-10-28 2005-11-22 Delphi Technologies, Inc. Latch timing mechanism for a two-step roller finger cam follower
EP1724447A1 (fr) * 2005-05-09 2006-11-22 Delphi Technologies, Inc. Poussoir de commande a galet a deux etages
US20070039573A1 (en) * 2005-08-04 2007-02-22 Timken Us Corporation Deactivating roller finger follower

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH027204Y2 (fr) * 1984-12-25 1990-02-21
JPH022884Y2 (fr) * 1984-12-25 1990-01-24
US5490486A (en) * 1994-10-05 1996-02-13 Ford Motor Company Eight cylinder internal combustion engine with variable displacement
DE102004029555A1 (de) * 2004-06-18 2006-01-05 Ina-Schaeffler Kg Schaltbarer Schlepphebel eines Ventiltriebs einer Brennkraftmaschine
US6925978B1 (en) * 2004-08-24 2005-08-09 Delphi Technologies, Inc. Two-step roller finger cam follower having angled lock pin
JP4535932B2 (ja) * 2005-05-09 2010-09-01 本田技研工業株式会社 エンジンの動弁装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4611558A (en) * 1984-10-12 1986-09-16 Toyota Jidosha Kabushiki Kaisha Valve actuating apparatus in internal combustion engine
US5544626A (en) * 1995-03-09 1996-08-13 Ford Motor Company Finger follower rocker arm with engine valve deactivator
US6318318B1 (en) * 2001-05-15 2001-11-20 Ford Global Technologies, Inc. Rocker arm assembly
US6966291B1 (en) * 2004-10-28 2005-11-22 Delphi Technologies, Inc. Latch timing mechanism for a two-step roller finger cam follower
EP1724447A1 (fr) * 2005-05-09 2006-11-22 Delphi Technologies, Inc. Poussoir de commande a galet a deux etages
US20070039573A1 (en) * 2005-08-04 2007-02-22 Timken Us Corporation Deactivating roller finger follower

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109915224A (zh) * 2012-11-05 2019-06-21 伊顿公司 用于接合凸轮的摇臂
CN109915224B (zh) * 2012-11-05 2021-08-31 伊顿公司 用于接合凸轮的摇臂

Also Published As

Publication number Publication date
DE102006057894A1 (de) 2008-06-12

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