EP1276973A1 - Dispositif de commande pour soupape d'admission ou de sortie de moteur a combustion interne - Google Patents

Dispositif de commande pour soupape d'admission ou de sortie de moteur a combustion interne

Info

Publication number
EP1276973A1
EP1276973A1 EP01933619A EP01933619A EP1276973A1 EP 1276973 A1 EP1276973 A1 EP 1276973A1 EP 01933619 A EP01933619 A EP 01933619A EP 01933619 A EP01933619 A EP 01933619A EP 1276973 A1 EP1276973 A1 EP 1276973A1
Authority
EP
European Patent Office
Prior art keywords
control
control device
areas
valve
keb
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
EP01933619A
Other languages
German (de)
English (en)
Other versions
EP1276973B1 (fr
Inventor
Frank Dolderer
Volker Korte
Christoph Steinmetz
Martin Lechner
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.)
Mahle Ventiltrieb GmbH
Original Assignee
Mahle Ventiltrieb GmbH
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 Mahle Ventiltrieb GmbH filed Critical Mahle Ventiltrieb GmbH
Publication of EP1276973A1 publication Critical patent/EP1276973A1/fr
Application granted granted Critical
Publication of EP1276973B1 publication Critical patent/EP1276973B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/06—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for braking
    • 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
    • F01L1/26—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per cylinder
    • F01L1/267—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per cylinder with means for varying the timing or the lift of the 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

Definitions

  • the invention relates to a control device for an intake or exhaust valve of an internal combustion engine according to the preamble of claim 1.
  • valve controls can be switched, for example for different load conditions or braking operation of the engine.
  • Such devices are known in the most varied of configurations from, for example, DE 27 53 197 AI, DE 36 13 945 AI, DE 38 00 347 AI, DE 41 36 143 AI, EP 0 775 251 B1, US 5,544,626 and JP 6-88 512 A.
  • the invention is concerned with the problem of creating a device with which the control of a valve can be changed to the greatest possible extent, in order thereby to be able to operate different engine operating states as optimally as possible.
  • an effectively switchable braking operation of an internal combustion engine is intended.
  • Hydraulic units are advantageously used as switching means.
  • the use of hydraulic units has the advantage that the force transmission areas of the actuating element relative to the control element on the one hand and / or the valve on the other hand can be integrated into these. This allows the valve lash compensation measures known per se in engine valve controls to be easily integrated into these hydraulic units.
  • Rocker arms or rocker arms can advantageously be used as adjusting elements. Use is also possible an actuating element which can only be moved in translation. The force is preferably transmitted to the end of a valve stem or, when several valves are actuated, to an intermediate element such as a valve bridge.
  • FIG. 1 is a perspective view of a rocker arm as an actuator
  • FIG. 2 shows a section through the rocker arm according to line II-II in FIG. 1 with an additional illustration of a camshaft controlling this rocker arm in a first switching state of the force introduction and transfer areas of this rocker arm
  • FIG. 3 shows the rocker arm in the illustration according to FIG. 2 in a different switching position of the force introduction and transfer areas
  • FIG. 5 shows a section through an actuating plunger as an actuating element in an arrangement between a camshaft. le and a valve, not shown, in a first switching position
  • FIG. 6 the actuating plunger in the illustration of FIG. 5 in a second switching position of the force application and transfer areas.
  • a camshaft 1 as a control element acts on a rocker arm 2 serving as an actuating element, which in turn controls the movement of the valve, not shown, of an internal combustion engine.
  • the engine valve, not shown is spring-loaded, such that the valve stem end is pressed against the rocker arm 2 by the valve spring force.
  • the area of the rocker arm 2 with which the rocker arm acts on the valve stem end is referred to below as the power transfer area (KÜB) and is marked in the drawing with the reference number 3.
  • the camshaft 1 has mutually adjoining control contours 4, 5 in the axial direction. These control contours 4, 5 are assigned contact areas on the rocker arm 2, which are referred to below as force introduction areas (KEB) and are marked in the drawing with a primary KEB area 6 and secondary KEB area 7.
  • the primary KEB area 6 consists of a primary roller rotatably mounted in a fixed position within the rocker arm 2
  • the secondary KEB area 7 is formed by a secondary roller 11 which is rotatably mounted within a tappet 9 of a hydraulic unit 10.
  • the KÜB area 3 is integrated in a piston 12 of a further hydraulic unit 13.
  • the hydraulic units 10 and 13 are hydraulically connected to one another via a hydraulic switching device via a connecting channel 14 (FIGS. 2, 3). Within this connection channel 14 there are hydraulic control valves (not shown in the drawing) for activating the hydraulic units, for which purpose the connection channel 14 is also connected to a hydraulic pressure source and a control line (not shown).
  • the pivot lever 2 can be pivoted about an articulation axis 15.
  • the tappet 9 with the secondary roller 11 in the hydraulic unit 10 is retracted and the piston 12 of the hydraulic unit 13 is fully extended to a predetermined extent and hydraulically locked. Due to the spring pressure under which the valve stem of the engine valve is located, the rocker arm 2 engages the control contour 4 of the camshaft 1 via the primary roller 8. The engine valve is locked via the rocker arm 2 by a hydraulic locking of the piston 12 in the hydraulic unit 13 controlled in a first switching position according to the control contour 4 of the camshaft 1.
  • the plunger 9 of the hydraulic unit 10 is fully extended and the piston 12 of the hydraulic unit 13 is fully retracted with the help of the hydraulic control valves (not shown) as switching means.
  • the rocker arm 2 controls the engine valve according to the control contour 5, on which the secondary roller 11 of the plunger 9 engages. This control corresponds to a second switching position in comparison to the previously described first switching position of the rocker arm.
  • Actuators of engine valves that are driven by a camshaft generally have a so-called hydraulic valve lash adjuster.
  • Such a hydraulic valve lash compensation measure can be carried out in a simple manner in the case of the control element design here, by integration into the hydraulic units 10 and 13. All that is required is the use of generally known specialist knowledge, so that no further technical explanations are necessary here. In principle, in the hydraulic units 10 and 13 described, it is sufficient to remove the specified travel limitation.
  • By changing the position of the KÜB area 3 within the rocker arm 2 it is possible to adjust the KEB areas 6 and 7 to the extent that these areas on the camshaft 1 can follow different control contours 4 and 5, not one of which Contour must lie within the other contour. This is a major advantage of the device according to the invention. Only one control contour is involved in the movement of the valve.
  • the embodiment according to FIG. 4 contains two separate camshafts 1, l ⁇ , each with different control contours 4 ⁇ and '5.
  • a rocker arm 2 ⁇ is used here. All other parts are comparable, so that a repeated description is unnecessary.
  • the engine valve control takes place in accordance with the control contour 4 on the camshaft 1 v as one of the two cam waves.
  • the plunger 9 - in contrast to the drawing - is retracted into the hydraulic unit 10 so that there is no contact between this plunger 9 and the other camshaft 1, namely in all rotational positions of the camshaft 1.
  • the piston 12 is at fully extended this first switch position.
  • hydraulic play compensation measures may be 13 integrated by omission of a stroke limiter for the hydraulic power units, also in this embodiment in the hydraulic units 10 and.
  • the camshafts 1 and 1 ⁇ can rotate at different speeds of rotation.
  • an actuating tappet 2 ⁇ is arranged as an actuating element between the camshaft and valve in this exemplary embodiment.

Landscapes

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

Abstract

L'invention concerne un dispositif de commande pour soupape d'admission ou de sortie d'un moteur à combustion interne, qui comprend un élément d'ajustement et un élément de commande. L'élément d'ajustement comprend un corps de base (2) et est monté de manière mobile entre l'élément de commande et la soupape. L'élément de commande tourne pendant le fonctionnement du dispositif de commande. Les zones périphériques de l'élément de commande qui tournent sous l'effet de la rotation dudit élément de commande et dont les contours diffèrent dans le sens périphérique se présentent sous forme de contours de commande. Il est prévu sur le corps de base (2) de l'élément de commande, des zones d'introduction d'énergie KEB (6,7) positionnées de manière différenciée et une zone de transmission de force (KUB (3). Il est prévu des éléments de commutation permettant une attribution alternée à effet de contact des zones KEB (6,7) aux différentes zones de came de commande de l'élément de commande. Ce dispositif de commande doit permettre d'obtenir le plus grand nombre possible de différents types de commande pour une soupape de moteur. A cet effet, dans ce type de dispositif de commande, l'affectation mutuelle intervenant dans le corps de base des éléments d'ajustement (2) entre une zone KUB (3) et au moins deux zones KEB (6,7) peut être modulée à l'aide d'éléments de commutation
EP01933619A 2000-04-28 2001-04-20 Dispositif de commande pour soupape d'admission ou de sortie de moteur a combustion interne Expired - Lifetime EP1276973B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10020884A DE10020884A1 (de) 2000-04-28 2000-04-28 Steuereinrichtung für ein Ein- oder Auslaßventil eines Verbrennungsmotors
DE10020884 2000-04-28
PCT/DE2001/001532 WO2001083952A1 (fr) 2000-04-28 2001-04-20 Dispositif de commande pour soupape d'admission ou de sortie de moteur a combustion interne

Publications (2)

Publication Number Publication Date
EP1276973A1 true EP1276973A1 (fr) 2003-01-22
EP1276973B1 EP1276973B1 (fr) 2003-11-19

Family

ID=7640235

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01933619A Expired - Lifetime EP1276973B1 (fr) 2000-04-28 2001-04-20 Dispositif de commande pour soupape d'admission ou de sortie de moteur a combustion interne

Country Status (4)

Country Link
US (1) US6640761B2 (fr)
EP (1) EP1276973B1 (fr)
DE (2) DE10020884A1 (fr)
WO (1) WO2001083952A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11156135B2 (en) * 2018-07-16 2021-10-26 Jacobs Vehicle Systems, Inc. Systems and methods for combined engine braking and lost motion exhaust valve opening

Family Cites Families (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2753197A1 (de) 1976-12-15 1978-06-22 Eaton Corp Ventilsteuervorrichtung
JPS55152308U (fr) * 1979-04-18 1980-11-04
US4475489A (en) * 1981-05-27 1984-10-09 Honda Giken Kogyo Kabushiki Kaisha Variable valve timing device for an internal combustion engine
US4726332A (en) 1985-04-26 1988-02-23 Mazda Motor Corporation Variable valve mechanism for internal combustion engines
DE3800347A1 (de) 1987-01-08 1988-09-29 Honda Motor Co Ltd Ventilbetaetigungsvorrichtung in einer brennkraftmaschine
JP2621049B2 (ja) * 1988-09-30 1997-06-18 スズキ株式会社 ４サイクルエンジンの動弁装置
SE466320B (sv) 1989-02-15 1992-01-27 Volvo Ab Foerfarande och anordning foer motorbromsning med en fyrtakts foerbraenningsmotor
JP2700101B2 (ja) * 1989-03-24 1998-01-19 フジオーゼックス株式会社 内燃機関用弁のリフト調節装置
JP2810442B2 (ja) * 1989-09-25 1998-10-15 日産自動車株式会社 エンジンの弁作動装置
JPH03149306A (ja) 1989-11-02 1991-06-25 Nissan Motor Co Ltd エンジンの弁作動装置
JPH03179115A (ja) * 1989-12-08 1991-08-05 Hino Motors Ltd 内燃機関の動弁装置
JP2986955B2 (ja) * 1991-04-26 1999-12-06 株式会社ユニシアジェックス エンジンの弁作動装置
JPH077719A (ja) 1991-06-28 1995-01-10 Nec Home Electron Ltd テレビジョン信号自動判別装置
DE4136143A1 (de) 1991-11-02 1993-05-06 Audi Ag, 8070 Ingolstadt, De Ventilsteuereinrichtung fuer eine brennkraftmaschine
JPH0688512A (ja) 1992-09-04 1994-03-29 Nissan Motor Co Ltd 内燃機関の吸・排気弁作動装置
FR2709150B1 (fr) * 1992-10-16 1996-08-30 Picchi Jean Pierre Dispositif de commande de levée et temps d'ouverture variable d'une soupape.
FR2709149A1 (fr) * 1992-10-16 1995-02-24 Picchi Jean Pierre Dispositif de commande de levée et temps d'ouverture variable d'une soupape.
SE501193C2 (sv) 1993-04-27 1994-12-05 Volvo Ab Avgasventilmekanism i en förbränningsmotor
JP3352177B2 (ja) * 1993-09-08 2002-12-03 株式会社オティックス 可変動弁機構
GB9401248D0 (en) * 1994-01-24 1994-03-23 Lotus Car Cam mechanisms
DE69513320T2 (de) * 1994-04-12 2000-04-13 Unisia Jecs Corp., Atsugi Ventiltrieb für Zylinder von Brennkraftmaschinen
JPH07317081A (ja) * 1994-05-25 1995-12-05 Hitoshi Mori Ｐｃ部材の乾式接合方法
US5544626A (en) 1995-03-09 1996-08-13 Ford Motor Company Finger follower rocker arm with engine valve deactivator
US5529033A (en) * 1995-05-26 1996-06-25 Eaton Corporation Multiple rocker arm valve control system
DE19621463A1 (de) * 1996-05-29 1997-12-04 Schaeffler Waelzlager Kg Als Schwing- bzw. Kipphebel ausgebildeter Nockenfolger eines Ventiltriebs einer Brennkraftmaschine
JPH1077815A (ja) * 1996-09-05 1998-03-24 Yamaha Motor Co Ltd 内燃エンジンの動弁機構
US6112711A (en) * 1996-11-18 2000-09-05 Toyota Jidosha Kabushiki Kaisha Valve performance control apparatus for internal combustion engines
DE19802738A1 (de) 1998-01-26 1999-07-29 Opel Adam Ag Vorrichtung zur variablen Steuerung eines Ventils einer Brennkraftmaschine

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Title
See references of WO0183952A1 *

Also Published As

Publication number Publication date
WO2001083952A1 (fr) 2001-11-08
DE50101002D1 (de) 2003-12-24
EP1276973B1 (fr) 2003-11-19
DE10020884A1 (de) 2001-10-31
US6640761B2 (en) 2003-11-04
US20030101955A1 (en) 2003-06-05

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