DE10215281A1 - Device for continuously varying the valve lift in internal combustion engines - Google Patents

Device for continuously varying the valve lift in internal combustion engines

Info

Publication number
DE10215281A1
DE10215281A1 DE10215281A DE10215281A DE10215281A1 DE 10215281 A1 DE10215281 A1 DE 10215281A1 DE 10215281 A DE10215281 A DE 10215281A DE 10215281 A DE10215281 A DE 10215281A DE 10215281 A1 DE10215281 A1 DE 10215281A1
Authority
DE
Germany
Prior art keywords
valve
internal combustion
valve lift
combustion engines
continuously varying
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.)
Withdrawn
Application number
DE10215281A
Other languages
German (de)
Inventor
Willi Roth
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE10215281A priority Critical patent/DE10215281A1/en
Priority to EP03007234A priority patent/EP1350928B1/en
Priority to DE50305150T priority patent/DE50305150D1/en
Publication of DE10215281A1 publication Critical patent/DE10215281A1/en
Withdrawn legal-status Critical Current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
    • F01L1/20—Adjusting or compensating clearance
    • F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
    • F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
    • F01L1/2405—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically by means of a hydraulic adjusting device located between the cylinder head and rocker arm
    • 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
    • F01L1/182—Centre pivot rocking arms the rocking arm being pivoted about an individual fulcrum, i.e. not about a common shaft
    • 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
    • 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)

Description

Technisches GebietTechnical field

Die Erfindung betrifft eine Vorrichtung zur Kraftstoffeinsparung, zum besseren Ansprechverhalten des Motors und eine Vereinfachung der gesamten Ansauganlage sowie der Verbesserung der Abgaswerte. The invention relates to a device for saving fuel, for better Response behavior of the engine and simplification of the entire intake system and the Improvement of exhaust gas values.

Stand der TechnikState of the art

Bisher wurden Ventilsteuerungen mit festem Hub verwendet und die Drosselwirkung des Einlaßvolumenstromes durch eine Drosselklappe gesteuert. So far, valve controls with a fixed stroke have been used and the throttling effect of the Inlet volume flow controlled by a throttle valve.

Beschreibungdescription

Die Erfindung bezieht sich gemäß dem Oberbegriff des Patentanspruchs 1 auf eine Vorrichtung zur Hub- und Öffnungswinkelverstellung eines Gaswechselventiles im Zylinderkopf einer Brennkraftmaschine. According to the preamble of claim 1, the invention relates to a Device for stroke and opening angle adjustment of a gas exchange valve in Cylinder head of an internal combustion engine.

Bei der vorliegenden Erfindung steht ein Kipphebel (3) gelagert auf der Exzenterwelle (4) und der Nockenabtastrolle (2) mit dem Nocken (1) kraftschlüssig in Linienberührung. Am gegenüberliegenden Ende des Kipphebels (3) ist auf einem Lagerbolzen (11) der Linearnocken (9) drehbar gelagert. Der Linearnocken (9) wird durch Drehung des Nockens (1) und durch die dadurch ausgelöste Kippbewegung des Kipphebels (3) um die exzentrische Lagerachse (4) zwischen der Rolle (5, feststehend) und der Rolle (10) befestigt am Schlepphebel (7) hin und her bewegt. Je nach Stellung der Exzenterwelle 4 wird der Linearnocken (9) weiter oder weniger weit zwischen die beiden Rollen (5) und (10) geschoben. Durch das Auflaufen der Rolle (10) auf die Hubkurve (12) des Linearnockens (9) ergibt sich dadurch ein mehr oder weniger großer Ventilhub oder ein mehr oder weniger langer Ventilöffnungswinkel. Durch das Verdrängen der Rolle (10), gelagert im Schlepphebel (7), weicht der Schlepphebel (7) um den Drehpunkt der Kugelpfanne am Kipphebel (3) zugewandten Ende des hydraulischen Ventilspielausgleichs (8) aus und dadurch entsteht ein Ventilhub am Ventil (6). Eine nicht näher bezeichnete Hilfsfeder belastet den Kipphebel (3) mit der Rolle (2) in Richtung Nocken (1). Dadurch wird ein Abheben der Rolle (2) vom Nocken (1) verhindert. In the present invention, a rocker arm ( 3 ) is supported on the eccentric shaft ( 4 ) and the cam sensing roller ( 2 ) with the cam ( 1 ) in a force-fitting manner in line contact. At the opposite end of the rocker arm ( 3 ), the linear cam ( 9 ) is rotatably mounted on a bearing pin ( 11 ). The linear cam (9) is fixed by rotation of the cam (1) and by the triggered thereby tilting movement of the rocker arm (3) about the eccentric bearing axis (4) between the roller (5, fixed) and the roll (10) on the drag lever (7 ) moved back and forth. Depending on the position of the eccentric shaft 4 , the linear cam ( 9 ) is pushed further or less between the two rollers ( 5 ) and ( 10 ). When the roller ( 10 ) runs onto the stroke curve ( 12 ) of the linear cam ( 9 ), this results in a more or less large valve stroke or a more or less long valve opening angle. By displacing the roller (10) mounted in the drag lever (7), the drag lever (7) deviates to the fulcrum of the ball socket on the rocker arm (3) facing the end of the hydraulic lash adjuster (8) and thereby produces a valve lift of the valve (6 ). An auxiliary spring, not specified, loads the rocker arm ( 3 ) with the roller ( 2 ) in the direction of the cam ( 1 ). This prevents the roller ( 2 ) from lifting off the cam ( 1 ).

Durch Verdrehen der Exzenterwelle (4) die fest in einem Gehäuse gelagert ist und auf dem der Kipphebel (3) gelagert ist kann der Ventilhub bzw. der Öffnungswinkel stufenlos von Null Ventilhub bis Maximalhub variiert werden. Vorzugsweise besteht der Verdrehwinkel der Exzenterwelle (4) 180° in Uhrzeigersinn oder Gegenuhrzeigersinn. Die Mittelpunkt des Nockens (1) liegt vorzugsweise im Strahl der Ventilachse (6), kann aber auch axial zur Nockenwelle verschoben sein. By turning the eccentric shaft ( 4 ), which is fixed in a housing and on which the rocker arm ( 3 ) is mounted, the valve lift or opening angle can be varied continuously from zero valve lift to maximum lift. The angle of rotation of the eccentric shaft ( 4 ) is preferably 180 ° clockwise or counterclockwise. The center of the cam ( 1 ) is preferably in the jet of the valve axis ( 6 ), but can also be axially displaced to the camshaft.

Claims (1)

1. Vorrichtung zum stufenlosen Variieren der Ventilerhebung in Verbrennungsmotoren dadurch gekennzeichnet, daß ein Linearnocken (9) von einem Betätigungsglied (3) zwischen zwei Rollen (5 und 10), wobei die Rolle (10) im Sinne des Ventilhubes beweglich ist, weit oder weniger weit eingeschoben wird und dadurch die Hubkurve (12) an einer Rolle (10), gelagert in einem Schlepphebel oder anderem Betätigungsglied zum Ventil hin, den Ventilhub auslöst. 1. Device for continuously varying the valve lift in internal combustion engines, characterized in that a linear cam ( 9 ) of an actuator ( 3 ) between two rollers ( 5 and 10 ), the roller ( 10 ) being movable in the sense of the valve stroke, far or less is inserted far and thereby the stroke curve ( 12 ) on a roller ( 10 ), mounted in a rocker arm or other actuating element towards the valve, triggers the valve stroke.
DE10215281A 2002-04-06 2002-04-06 Device for continuously varying the valve lift in internal combustion engines Withdrawn DE10215281A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE10215281A DE10215281A1 (en) 2002-04-06 2002-04-06 Device for continuously varying the valve lift in internal combustion engines
EP03007234A EP1350928B1 (en) 2002-04-06 2003-04-01 Apparatus for variable actuation of a poppet valve in a combustion engine
DE50305150T DE50305150D1 (en) 2002-04-06 2003-04-01 Device for the variable actuation of a lift valve of an internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE10215281A DE10215281A1 (en) 2002-04-06 2002-04-06 Device for continuously varying the valve lift in internal combustion engines

Publications (1)

Publication Number Publication Date
DE10215281A1 true DE10215281A1 (en) 2003-10-16

Family

ID=27816181

Family Applications (2)

Application Number Title Priority Date Filing Date
DE10215281A Withdrawn DE10215281A1 (en) 2002-04-06 2002-04-06 Device for continuously varying the valve lift in internal combustion engines
DE50305150T Expired - Fee Related DE50305150D1 (en) 2002-04-06 2003-04-01 Device for the variable actuation of a lift valve of an internal combustion engine

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE50305150T Expired - Fee Related DE50305150D1 (en) 2002-04-06 2003-04-01 Device for the variable actuation of a lift valve of an internal combustion engine

Country Status (2)

Country Link
EP (1) EP1350928B1 (en)
DE (2) DE10215281A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10261304B4 (en) * 2002-12-27 2009-01-22 BÖSL-FLIERL, Gerlinde Valve lift device for variable valve control of the gas exchange valves of an internal combustion engine

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10303128A1 (en) * 2003-01-28 2004-07-29 Fev Motorentechnik Gmbh Variable valve drive for a gas shuttle valve in a reciprocating piston engine, especially a reciprocating internal combustion engine, comprises a drive device acting on a stroke transfer device having an adjustable control element
DE102005035315B4 (en) * 2005-07-28 2007-05-10 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Variable valve train for internal combustion engines
JP2007127117A (en) * 2005-10-04 2007-05-24 Masaaki Yoshikawa Valve system apparatus for four-stroke internal combustion engine
US7363893B2 (en) * 2005-12-05 2008-04-29 Delphi Technologies, Inc. System for variable valvetrain actuation

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2363891A1 (en) * 1973-07-13 1975-06-26 Daimler Benz Ag Valve control system for ic engine - valve rod is controlled by action of lever on adjustable curved surface
US4205634A (en) * 1978-02-17 1980-06-03 Tourtelot Edward M Jr Variable valve timing mechanism
US4459946A (en) * 1982-05-17 1984-07-17 Investment Rarities, Incorporated Valve actuating apparatus utilizing a multi-profiled cam unit for controlling internal combustion engines
US4469056A (en) * 1983-02-22 1984-09-04 Tourtelot Jr Edward M Dual follower variable valve timing mechanism
IT1220275B (en) * 1988-01-19 1990-06-15 Franco Storchi COMPLEX OF ELEMENTS FOR VARIABLE TIMING OF THE VALVES OF AN ENGINE, IN PARTICULAR OF AN INTERNAL COMBUSTION 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
DE4326331A1 (en) * 1992-07-15 1995-02-09 Bayerische Motoren Werke Ag Valve gear of an internal combustion engine
DE10040544A1 (en) * 2000-08-18 2002-02-28 Schaeffler Waelzlager Ohg Variable valve drive for externally ignited internal combustion engine, includes movable support arranged in cylinder head and contacting lever which is provided between transmission and inlet valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10261304B4 (en) * 2002-12-27 2009-01-22 BÖSL-FLIERL, Gerlinde Valve lift device for variable valve control of the gas exchange valves of an internal combustion engine

Also Published As

Publication number Publication date
DE50305150D1 (en) 2006-11-09
EP1350928A3 (en) 2003-12-10
EP1350928B1 (en) 2006-09-27
EP1350928A2 (en) 2003-10-08

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Legal Events

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8139 Disposal/non-payment of the annual fee