EP2208868A3 - Switchable tappet - Google Patents

Switchable tappet Download PDF

Info

Publication number
EP2208868A3
EP2208868A3 EP09178953A EP09178953A EP2208868A3 EP 2208868 A3 EP2208868 A3 EP 2208868A3 EP 09178953 A EP09178953 A EP 09178953A EP 09178953 A EP09178953 A EP 09178953A EP 2208868 A3 EP2208868 A3 EP 2208868A3
Authority
EP
European Patent Office
Prior art keywords
tappet
coupling means
hollow cylindrical
valve lift
lift
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.)
Granted
Application number
EP09178953A
Other languages
German (de)
French (fr)
Other versions
EP2208868B1 (en
EP2208868A2 (en
Inventor
Michael Haas
Norbert Nitz
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 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 EP2208868A2 publication Critical patent/EP2208868A2/en
Publication of EP2208868A3 publication Critical patent/EP2208868A3/en
Application granted granted Critical
Publication of EP2208868B1 publication Critical patent/EP2208868B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F01L1/143—Tappets; Push rods for use with overhead camshafts
    • 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

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

Vorgeschlagen ist ein schaltbarer Tassenstößel (1) mit einem Außenkörper (2), der einen für einen Großhubnockenkontakt ausgebildeten Boden (3) hat, von dem ein hohlzylindrisches Hemd (5) absteht, wobei von einem Innenrand (6) des Bodens (3) ein hohlzylindrischer Ansatz (7) wegführt, in dem ein Innenteil (9) geführt ist, dessen Boden (11) einem Anlauf eines Niedrighubnockens dient, wobei im Tassenstößel (1) Koppelmittel (13) verlaufen, die für einen vollen Ventilhub aus einer Aufnahme (14, 15) eines der Bauteile (2, 9) heraus, abschnittsweise in oder auf eine Mitnehmerfläche (16, 17) des jeweils anderen Bauteils (9, 2) verlagerbar sind, wobei die Koppelmittel (13) für einen demgegenüber kleineren Ventilhub in der Aufnahme (14, 15) verlaufen, wobei der Boden (11) des Innenelements (9) zwei sich diametral gegenüberliegende, direkt am bodenseitigen Randbereich (21) dessen Außenmantels (10) angebundene Segmente (22).Proposed is a switchable bucket tappet (1) with an outer body (2) having a trained for a Großhubnockenkaktakt bottom (3) from which a hollow cylindrical shirt (5) protrudes, wherein from an inner edge (6) of the bottom (3) hollow cylindrical projection (7) leads away, in which an inner part (9) is guided, the bottom (11) is used for start-up of a low-lift cam, wherein in the tappet (1) coupling means (13) extend, for a full valve lift from a receptacle (14 , 15) of one of the components (2, 9) out, partially in or on a driver surface (16, 17) of the other component (9, 2) are displaceable, wherein the coupling means (13) for a contrast smaller valve lift in the recording (14, 15) run, wherein the bottom (11) of the inner element (9) has two diametrically opposite, directly on the bottom edge region (21) of the outer shell (10) tethered segments (22).

EP20090178953 2009-01-15 2009-12-11 Switchable tappet Not-in-force EP2208868B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200910004746 DE102009004746A1 (en) 2009-01-15 2009-01-15 Switchable bucket tappets

Publications (3)

Publication Number Publication Date
EP2208868A2 EP2208868A2 (en) 2010-07-21
EP2208868A3 true EP2208868A3 (en) 2010-08-11
EP2208868B1 EP2208868B1 (en) 2015-02-25

Family

ID=42107853

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20090178953 Not-in-force EP2208868B1 (en) 2009-01-15 2009-12-11 Switchable tappet

Country Status (3)

Country Link
EP (1) EP2208868B1 (en)
CN (1) CN101813011B (en)
DE (1) DE102009004746A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011085239A1 (en) * 2011-10-26 2013-05-02 Schaeffler Technologies AG & Co. KG Roller plunger for use in e.g. high-pressure fuel pump of combustion engine, has housing guided in component hole over outer jacket, which is curved-out of housing, where edge region of housing is provided with slippage chamfer
DE102017101806A1 (en) 2017-01-31 2018-08-02 Schaeffler Technologies AG & Co. KG Switchable bucket tappets

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5345904A (en) * 1990-02-16 1994-09-13 Group Lotus Valve control means
US5709180A (en) * 1997-02-06 1998-01-20 General Motors Corporation Narrow cam two-step lifter
DE4492633C1 (en) * 1993-05-04 2001-05-31 Schaeffler Waelzlager Ohg Valve lifter for IC engine
DE10055595A1 (en) * 2000-11-09 2002-05-29 Ina Schaeffler Kg The cylinder shutoff has cylinders with gas exchange valves, cam shaft, driven by crank shaft, two cams, and valve drive element
US6457445B1 (en) * 2000-05-23 2002-10-01 Mitsubishi Denki Kabushiki Kaisha Valve lift control device
JP2003148117A (en) * 2001-11-16 2003-05-21 Nissan Motor Co Ltd Variable valve system for internal combustion engine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5345904A (en) * 1990-02-16 1994-09-13 Group Lotus Valve control means
DE4492633C1 (en) * 1993-05-04 2001-05-31 Schaeffler Waelzlager Ohg Valve lifter for IC engine
US5709180A (en) * 1997-02-06 1998-01-20 General Motors Corporation Narrow cam two-step lifter
US6457445B1 (en) * 2000-05-23 2002-10-01 Mitsubishi Denki Kabushiki Kaisha Valve lift control device
DE10055595A1 (en) * 2000-11-09 2002-05-29 Ina Schaeffler Kg The cylinder shutoff has cylinders with gas exchange valves, cam shaft, driven by crank shaft, two cams, and valve drive element
JP2003148117A (en) * 2001-11-16 2003-05-21 Nissan Motor Co Ltd Variable valve system for internal combustion engine

Also Published As

Publication number Publication date
EP2208868B1 (en) 2015-02-25
CN101813011A (en) 2010-08-25
DE102009004746A1 (en) 2010-07-22
EP2208868A2 (en) 2010-07-21
CN101813011B (en) 2014-07-23

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