EP0761935A3 - Variable valve driving gear, particularly for internal combustion engines - Google Patents

Variable valve driving gear, particularly for internal combustion engines Download PDF

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Publication number
EP0761935A3
EP0761935A3 EP96110558A EP96110558A EP0761935A3 EP 0761935 A3 EP0761935 A3 EP 0761935A3 EP 96110558 A EP96110558 A EP 96110558A EP 96110558 A EP96110558 A EP 96110558A EP 0761935 A3 EP0761935 A3 EP 0761935A3
Authority
EP
European Patent Office
Prior art keywords
internal combustion
combustion engines
variable valve
valve
driving gear
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
EP96110558A
Other languages
German (de)
French (fr)
Other versions
EP0761935A2 (en
EP0761935B1 (en
Inventor
Gert Fischer
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP0761935A2 publication Critical patent/EP0761935A2/en
Publication of EP0761935A3 publication Critical patent/EP0761935A3/en
Application granted granted Critical
Publication of EP0761935B1 publication Critical patent/EP0761935B1/en
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
    • 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
    • F01L13/0063—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 by modification of cam contact point by displacing an intermediate lever or wedge-shaped intermediate element, e.g. Tourtelot
    • 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
    • F01L1/181—Centre 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
    • F01L13/0015—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
    • F01L13/0021—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 by modification of rocker arm ratio

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

Für einen variablen Ventiltrieb, insbesondere für Brennkraftmaschinen, bei dem ein Steuernocken (2) einer Nockenwelle (3) über eine zwischengeschaltete Rolle (4) auf einen schwenk- bzw. kippbeweglichen Ventilhebel (6) zur Betätigung eines Hubventiles (7) einwirkt, wird zur Erzielung einer stufenlosen Steuerzeit- und Hubverstellung des Hubventiles (7) vorgeschlagen, daß die Rolle (4) bei einem Minimalhub über einen verstellbar gesteuerten Verstellhebel (9) im äußeren Endbereich des Ventilhebels (6) positioniert quer zur Nockenerhebung des Steuernockens (2) schwenkbar geführt ist.

Figure 00000001
For a variable valve train, in particular for internal combustion engines, in which a control cam (2) of a camshaft (3) acts via an intermediate roller (4) on a pivotable or tiltable valve lever (6) for actuating a lift valve (7) Achieving a stepless control time and stroke adjustment of the lift valve (7) suggested that the roller (4) pivotably guided at a minimum stroke via an adjustable controlled adjustment lever (9) in the outer end region of the valve lever (6) transversely to the cam elevation of the control cam (2) is.
Figure 00000001
EP96110558A 1995-09-01 1996-06-29 Variable valve driving gear, particularly for internal combustion engines Expired - Lifetime EP0761935B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19532334A DE19532334A1 (en) 1995-09-01 1995-09-01 Variable valve train, especially for internal combustion engines
DE19532334 1995-09-01

Publications (3)

Publication Number Publication Date
EP0761935A2 EP0761935A2 (en) 1997-03-12
EP0761935A3 true EP0761935A3 (en) 1998-02-11
EP0761935B1 EP0761935B1 (en) 2002-01-23

Family

ID=7771050

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96110558A Expired - Lifetime EP0761935B1 (en) 1995-09-01 1996-06-29 Variable valve driving gear, particularly for internal combustion engines

Country Status (4)

Country Link
US (1) US5899180A (en)
EP (1) EP0761935B1 (en)
DE (2) DE19532334A1 (en)
ES (1) ES2171206T3 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9703605D0 (en) * 1997-02-21 1997-04-09 T & N Technology Ltd Operating mechanisms for valves
JP3485434B2 (en) * 1997-04-04 2004-01-13 株式会社日立ユニシアオートモティブ Valve train for internal combustion engine
US5988125A (en) * 1997-08-07 1999-11-23 Unisia Jecs Corporation Variable valve actuation apparatus for engine
JP3893202B2 (en) * 1997-11-07 2007-03-14 株式会社日立製作所 Variable valve operating device for internal combustion engine
US6041746A (en) * 1997-12-09 2000-03-28 Nissan Motor Co., Ltd. Variable valve actuation apparatus
DE19859564B4 (en) * 1997-12-26 2005-09-08 Nissan Motor Co., Ltd., Yokohama Variable valve adjuster
DE19801964A1 (en) * 1998-01-21 1999-07-22 Audi Ag Mechanism to interrupt the force flow between a cam at the camshaft and a valve
JP3924078B2 (en) * 1998-05-21 2007-06-06 株式会社日立製作所 Variable valve operating device for internal combustion engine
DE19825307A1 (en) * 1998-06-05 1999-12-09 Bayerische Motoren Werke Ag Valve control for an internal combustion engine
DE19825308A1 (en) * 1998-06-05 1999-12-09 Bayerische Motoren Werke Ag Variable valve train for an internal combustion engine
US6019076A (en) * 1998-08-05 2000-02-01 General Motors Corporation Variable valve timing mechanism
US6135075A (en) * 1999-03-10 2000-10-24 Boertje; Brian H. Variable cam mechanism for an engine
DE19913742A1 (en) * 1999-03-26 2000-09-28 Bayerische Motoren Werke Ag Device for stroke adjustment of a gas exchange valve in the cylinder head of an internal combustion engine
DE59902000D1 (en) * 1999-10-29 2002-08-14 Sts System Technology Services Mechanical regulation of the stroke adjustment of the intake valve of an internal combustion engine
GB2357131A (en) * 1999-12-09 2001-06-13 Mechadyne Internat Plc Valve actuating mechanism
JP2001164911A (en) * 1999-12-10 2001-06-19 Yamaha Motor Co Ltd Valve system of four-cycle engine
DE19960742B4 (en) * 1999-12-16 2006-09-28 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Variable valve train, preferably for internal combustion engines
JP3799944B2 (en) 2000-03-21 2006-07-19 トヨタ自動車株式会社 Variable valve mechanism and intake air amount control device for internal combustion engine
US6360705B1 (en) * 2000-10-19 2002-03-26 General Motors Corporation Mechanism for variable valve lift and cylinder deactivation
US6446589B1 (en) * 2001-01-16 2002-09-10 Chinh T. Nguyen Cam actuated continuous simultaneously variable valve timing and lifting assembly
US7104229B2 (en) * 2001-04-05 2006-09-12 Stephen William Mitchell Variable valve timing system
US6539909B2 (en) 2001-05-03 2003-04-01 International Engine Intellectual Property Company, L.L.C. Retractable seat valve and method for selective gas flow control in a combustion chamber
GR20010100295A (en) * 2001-06-18 2003-02-27 Εμμανουηλ Παττακος Variable valve gear
DE10136612A1 (en) * 2001-07-17 2003-02-06 Herbert Naumann Variable lift valve controls
US6491008B1 (en) * 2001-10-18 2002-12-10 Ford Global Technologies, Inc. Variable valve timing adjustable roller rocker arm assembly
US6550435B1 (en) * 2002-01-17 2003-04-22 Ford Global Technologies, Llc Variable valve timing adjustable finger follower assembly
DE10221133A1 (en) * 2002-05-13 2003-11-27 Thyssen Krupp Automotive Ag Drive and adjustment system for variable valve controls
JP4057855B2 (en) 2002-07-05 2008-03-05 本田技研工業株式会社 Valve operating device for internal combustion engine
US6978751B2 (en) * 2002-07-18 2005-12-27 Kohler Co. Cam follower arm for an internal combustion engine
DE10312958B4 (en) 2003-03-24 2005-03-10 Thyssen Krupp Automotive Ag Device for vairably actuating the gas exchange valves of internal combustion engines and method for operating such a device
DE10312959B4 (en) * 2003-03-24 2006-10-05 Thyssenkrupp Automotive Ag Device for the variable actuation of gas exchange valves of internal combustion engines
DE10312961C5 (en) * 2003-03-24 2009-01-29 Thyssenkrupp Presta Teccenter Ag Device for the variable actuation of gas exchange valves of internal combustion engines
JP4225321B2 (en) * 2003-12-18 2009-02-18 トヨタ自動車株式会社 Variable valve mechanism
KR20090056602A (en) * 2007-11-30 2009-06-03 현대자동차주식회사 Variable valve lift apparatus
US8033261B1 (en) 2008-11-03 2011-10-11 Robbins Warren H Valve actuation system and related methods
ITBO20090063A1 (en) * 2009-02-10 2010-08-11 Moto Morini S P A DEVICE FOR THE CONTROL OF THE LIFT OF A VALVE FOR A MOTOR
DE102017119348A1 (en) * 2017-08-24 2019-02-28 Man Truck & Bus Ag Variable valve train

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2100344A (en) * 1981-06-08 1982-12-22 Tourtelot Edward Mortimer Ic engine variable valve timing mechanism
DE4220816A1 (en) * 1992-06-25 1994-01-05 Schaeffler Waelzlager Kg Adjustable valve control for IC engine - has adjustable intermediate member between cam and pivot lever along guide path
WO1995009298A1 (en) * 1993-09-30 1995-04-06 Lotus Cars Ltd. Valve operating mechanism for internal combustion engines
EP0717174A1 (en) * 1994-12-12 1996-06-19 Isuzu Motors Limited Valve operating system for internal combustion engine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE800616C (en) * 1949-07-21 1950-11-23 Carl F W Borgward Internal combustion engine, especially for motor vehicles
US4469056A (en) * 1983-02-22 1984-09-04 Tourtelot Jr Edward M Dual follower variable valve timing mechanism
US5003939A (en) * 1990-02-26 1991-04-02 King Brian T Valve duration and lift variator for internal combustion engines
DE4226163A1 (en) * 1992-08-07 1994-02-10 Schaeffler Waelzlager Kg Engine valve shutdown by means of cam roller displacement
DE4420064A1 (en) * 1994-06-08 1995-12-14 Bayerische Motoren Werke Ag Valve train with variable control of the valve opening angle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2100344A (en) * 1981-06-08 1982-12-22 Tourtelot Edward Mortimer Ic engine variable valve timing mechanism
DE4220816A1 (en) * 1992-06-25 1994-01-05 Schaeffler Waelzlager Kg Adjustable valve control for IC engine - has adjustable intermediate member between cam and pivot lever along guide path
WO1995009298A1 (en) * 1993-09-30 1995-04-06 Lotus Cars Ltd. Valve operating mechanism for internal combustion engines
EP0717174A1 (en) * 1994-12-12 1996-06-19 Isuzu Motors Limited Valve operating system for internal combustion engine

Also Published As

Publication number Publication date
DE59608633D1 (en) 2002-03-14
EP0761935A2 (en) 1997-03-12
DE19532334A1 (en) 1997-03-06
US5899180A (en) 1999-05-04
ES2171206T3 (en) 2002-09-01
EP0761935B1 (en) 2002-01-23

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