ATE326618T1 - DEVICE FOR ACTUATING THE CHARGE EXCHANGE VALVES IN RECIPICATING ENGINES - Google Patents

DEVICE FOR ACTUATING THE CHARGE EXCHANGE VALVES IN RECIPICATING ENGINES

Info

Publication number
ATE326618T1
ATE326618T1 AT04700455T AT04700455T ATE326618T1 AT E326618 T1 ATE326618 T1 AT E326618T1 AT 04700455 T AT04700455 T AT 04700455T AT 04700455 T AT04700455 T AT 04700455T AT E326618 T1 ATE326618 T1 AT E326618T1
Authority
AT
Austria
Prior art keywords
cam
joint
point
inflection
valve lift
Prior art date
Application number
AT04700455T
Other languages
German (de)
Inventor
Helmut Schoen
Kai-Uwe Keller
Original Assignee
Thyssen Krupp Automotive 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 Thyssen Krupp Automotive Ag filed Critical Thyssen Krupp Automotive Ag
Application granted granted Critical
Publication of ATE326618T1 publication Critical patent/ATE326618T1/en

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
    • 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
    • F01L13/0063—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
    • 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
    • F01L2013/0068—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 with an oscillating cam acting on the valve of the "BMW-Valvetronic" type
    • 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

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

A device is described for actuating the charge-cycling valves (V) in reciprocating internal combustion engines, consisting of a housing (G); a cam (N) mounted in the housing (G) in a revolute joint (ng) so as to be able to rotate, the rotational movement of which cam is derived from a crankshaft; an intermediate member (Z) activated by this cam (N) by way of a first cam joint (zn); and a power take-off member (A) that transfers the movement to the valve (V), and is connected to act with the intermediate member (Z), directly or via other transfer elements, and at least one other cam joint (za) is provided within the active connection from the first cam joint (zn) to the power take-off member (A), whereby this other cam joint (za) is formed by a cam (Kz or Ka, respectively) on one of the two gear mechanism members (Z, A) that form the cam joint (za), in and of themselves, the shape of which cam has at least one point of inflection (W) in the contact region in which a valve lift is produced, whereby the point of inflection (W) is disposed in the region of the cam (Kz or Ka, respectively) that describes the greatest possible valve lift. In order to minimize the forces, i.e. moments between the gear mechanism members, and thus to keep the reactive forces in the system as low as possible, it is proposed that the point of inflection (W) be disposed in such a manner that the surface normal in the contact point, at which the greatest valve lift is achieved, is approximately equal to the surface normal in the contact point, at which the highest valve acceleration occurs.
AT04700455T 2003-01-22 2004-01-07 DEVICE FOR ACTUATING THE CHARGE EXCHANGE VALVES IN RECIPICATING ENGINES ATE326618T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE10302260A DE10302260B4 (en) 2003-01-22 2003-01-22 Device for actuating the charge exchange valves in reciprocating engines

Publications (1)

Publication Number Publication Date
ATE326618T1 true ATE326618T1 (en) 2006-06-15

Family

ID=32694915

Family Applications (1)

Application Number Title Priority Date Filing Date
AT04700455T ATE326618T1 (en) 2003-01-22 2004-01-07 DEVICE FOR ACTUATING THE CHARGE EXCHANGE VALVES IN RECIPICATING ENGINES

Country Status (5)

Country Link
US (1) US20060130786A1 (en)
EP (1) EP1588029B1 (en)
AT (1) ATE326618T1 (en)
DE (2) DE10302260B4 (en)
WO (1) WO2004065764A2 (en)

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1242280A (en) * 1958-12-13 1960-09-23 Bosch Gmbh Robert Cam control device, in particular for fuel injection pumps
DE1526488B1 (en) * 1966-03-10 1970-05-14 Maschf Augsburg Nuernberg Ag Cam for controlling the valves of an internal combustion engine
DE2629554A1 (en) * 1976-07-01 1978-01-12 Daimler Benz Ag Charge regulator for mixture compression engine - has valve actuator lever moved by cam with adjustable rotation centre
DE2810784C3 (en) * 1978-03-13 1981-10-29 Daimler-Benz Ag, 7000 Stuttgart Cam for a valve stem for controlling internal combustion engines
US4382428A (en) * 1981-06-08 1983-05-10 Tourtelot Jr Edward M Contoured finger follower variable valve timing mechanism
FR2519375B1 (en) * 1981-12-31 1986-07-11 Baguena Michel VARIABLE VALVE FOR FOUR-STROKE ENGINE
DE3833540A1 (en) * 1988-10-01 1990-04-12 Peter Prof Dr Ing Kuhn DEVICE FOR ACTUATING THE VALVES OF INTERNAL COMBUSTION ENGINES WITH VARIABLE VALVE LIFTING CURVE
DE4135257C2 (en) * 1991-10-25 1998-09-03 Peter Prof Dr Ing Kuhn Device for actuating the valves in internal combustion engines by means of rotating cams
JP3167180B2 (en) * 1992-07-03 2001-05-21 マツダ株式会社 Engine valve timing control device
DE19629349A1 (en) * 1996-07-20 1998-01-22 Dieter Dipl Ing Reitz Valve drive for internal combustion engine
DE19645112A1 (en) * 1996-11-01 1998-05-14 Roland Klaar Built camshaft
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
EP1096115B1 (en) * 1999-10-29 2002-07-10 STS System Technology Services GmbH Mechanically controlled intake valve lift in an internal combustion engine
DE10006018B4 (en) * 2000-02-11 2009-09-17 Schaeffler Kg Variable valve drive for load control of a spark-ignited internal combustion engine
DE10100173A1 (en) * 2001-01-04 2002-07-11 Fev Motorentech Gmbh Fully variable mechanical valve train for a piston internal combustion engine
ES2185519T3 (en) * 2001-05-03 2005-03-16 Sts System Technology Services Gmbh MECHANICAL REGULATION OF THE RUNNING VALVE OF A COMBUSTION ENGINE.

Also Published As

Publication number Publication date
DE10302260B4 (en) 2005-03-24
WO2004065764A3 (en) 2004-09-23
US20060130786A1 (en) 2006-06-22
DE502004000589D1 (en) 2006-06-22
EP1588029A2 (en) 2005-10-26
WO2004065764A2 (en) 2004-08-05
EP1588029B1 (en) 2006-05-17
DE10302260A1 (en) 2004-08-12

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Legal Events

Date Code Title Description
REN Ceased due to non-payment of the annual fee