EP0780547A1 - Dispositif permettant de varier la loi de leveé d'une soupape de moteur à combustion interne - Google Patents

Dispositif permettant de varier la loi de leveé d'une soupape de moteur à combustion interne Download PDF

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Publication number
EP0780547A1
EP0780547A1 EP96119721A EP96119721A EP0780547A1 EP 0780547 A1 EP0780547 A1 EP 0780547A1 EP 96119721 A EP96119721 A EP 96119721A EP 96119721 A EP96119721 A EP 96119721A EP 0780547 A1 EP0780547 A1 EP 0780547A1
Authority
EP
European Patent Office
Prior art keywords
eccentric shaft
rocker arm
shaft
electric motor
motor
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Withdrawn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
EP96119721A
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German (de)
English (en)
Inventor
Achim Dipl.-Ing. Koch
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP0780547A1 publication Critical patent/EP0780547A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • 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

Definitions

  • the invention relates to an adjusting device according to the preamble of claim 1.
  • An adjusting device known from EP 0 638 706 A1 comprises an eccentric shaft on which a rocker arm is supported.
  • a camshaft rolls on a roller that is assigned to the rocker arm.
  • the cam stroke of the camshaft is thus transmitted to the rocker arm, which acts on a gas exchange valve via a rocker arm.
  • the cam stroke is transmitted differently to the rocker arm, which enables different valve stroke profiles.
  • phase shifts between the crankshaft and camshaft that are adjustable by an electric motor and controllable via control units are known in principle; the mutual adjustment takes place via translatory spindle movements, which are associated with the disadvantage of a large installation space and a relatively slow adjustment possibility.
  • the object of the invention is to provide a compact, quickly adjustable and simple adjustment device.
  • FIG. 1 shows a valve train 1 with an adjusting device according to the invention.
  • a cylinder head 2 extends across several cylinders perpendicular to the plane of the drawing.
  • At least one inlet channel 4 to the combustion chamber 5 is provided per cylinder, a gas exchange valve (hereinafter referred to as a lift valve 6) being provided for each inlet channel 4.
  • the lift valve 6 is actuated by a cam 7 of a camshaft 8, the cam 7 acting on the rocker arm 10 via a roller 9 which is rotatably mounted on a rocker arm 10.
  • the rocker arm 10 in turn acts on a rocker arm 11 via a second roller 11a mounted there.
  • the rocker arm 11 is provided with a hydraulic play compensation element 12, on which a shaft 13 of the lift valve 6 is ultimately supported.
  • the adjusting device for the lift valve 6 comprises the rocker arm 10, an eccentric shaft 15 with an eccentric 16, a gear, an electric motor 17 with a motor shaft 18, a rotation angle sensor 19 and a control unit 20.
  • the rocker arm 10 is supported on an eccentric 16, which is machined out of the eccentric shaft 15. If the eccentric shaft 15 is rotated about its longitudinal axis, ie its rotational position is changed, the support point of the rocker arm 10 is shifted. Such a change in the support point of the rocker arm 10 results in different valve lift profiles for the same cam stroke, since due to the changed support of the rocker arm 10, when the cam 7 rotates with respect to the rocker arm 11, a different trajectory is traversed, so that the rocker arm 11 is deflected differently. In particular, it is hereby In addition to a maximum valve lift, it is also possible to achieve a valve lift of almost zero in which the lift valve 6 is opened only minimally.
  • the rocker arm 10 is guided by a bolt-hole guide 21, which comprises an elongated hole 21a in the rocker arm, via which the rocker arm 10 is suspended with a bolt 21b, which is fastened to the cylinder head 2 in a bearing point 22. Because of this bolt-hole guide 21, the rocker arm 10 can thus assume different positions.
  • the electric motor 17 is arranged on the cylinder head 2 such that its motor shaft 18 is positively connected to the eccentric shaft 15 via a gear.
  • the gear is designed as a worm gear.
  • the electric motor 17 is arranged on the cylinder head 2 so that its motor shaft 18 is supported at one free end in a bearing 23 and the longitudinal axis of the motor shaft 18 is perpendicular to the longitudinal axis of the eccentric shaft 15.
  • the worm gear comprises a worm 24 and a worm wheel 25.
  • the worm 24 is arranged on the motor shaft 18 and engages in the worm wheel 25, which is arranged on the eccentric shaft 15.
  • the worm gear mechanism is designed to be self-locking in order to make it impossible to drive the worm 24 from the worm wheel 25. As a result, torque fluctuations of the eccentric shaft 15 are not transmitted directly to the electric motor 17.
  • the angle encoder 19 is arranged on the motor shaft 18 and generates a rotational position signal.
  • An actual value of the rotational position of the eccentric shaft 15 is determined in the control unit 20 from the rotational position signal, taking into account the gear ratio.
  • a setpoint for the rotational position of the eccentric shaft 15 is specified by an engine control of a motor vehicle, not shown here.
  • the electric motor 17 is controlled by the control unit 20.
  • the electric motor 17 can also be arranged such that the longitudinal axis of the motor shaft 18 runs parallel to the eccentric shaft 15.
  • the gear is then designed as a spur gear, which has a first spur gear and a second spur gear.
  • the first spur gear is arranged on the motor shaft 15 and positively connected to the second spur gear, which is arranged on the eccentric shaft 15.
  • the angle encoder 19 can also be arranged directly on the eccentric shaft 15. Then the position signal directly represents the actual value.
  • the rotational position of the eccentric shaft 15 can be changed quickly in any operating state of the internal combustion engine. This is an important advantage in particular if a very large torque is required when starting the internal combustion engine.
  • the rotational position of the eccentric shaft 15 can then be adjusted immediately so that the stroke course of the globe valve 6 becomes maximum. In contrast to an electrohydraulic drive, in which the necessary pressure must first be built up, this is possible without delay.
  • a reset mandrel 26 which always presses the rocker arm 10 against both the cam 7 and the eccentric 16.
  • the reset mandrel 26 is acted upon in a corresponding manner by a compression spring 27 which is supported on a guide element 28 screwed into the cylinder head 2.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
EP96119721A 1995-12-22 1996-12-09 Dispositif permettant de varier la loi de leveé d'une soupape de moteur à combustion interne Withdrawn EP0780547A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19548389 1995-12-22
DE1995148389 DE19548389A1 (de) 1995-12-22 1995-12-22 Verstellvorrichtung für den Hubverlauf eines Gaswechselventils einer Brennkraftmaschine

Publications (1)

Publication Number Publication Date
EP0780547A1 true EP0780547A1 (fr) 1997-06-25

Family

ID=7781182

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96119721A Withdrawn EP0780547A1 (fr) 1995-12-22 1996-12-09 Dispositif permettant de varier la loi de leveé d'une soupape de moteur à combustion interne

Country Status (2)

Country Link
EP (1) EP0780547A1 (fr)
DE (1) DE19548389A1 (fr)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2322412A (en) * 1997-02-21 1998-08-26 T & N Technology Ltd Variable timing valve operating mechanism
EP1096115A1 (fr) * 1999-10-29 2001-05-02 STS System Technology Services GmbH Dispositif de régulation mécanique de la levée de soupape de moteur à combustion interne
US6425357B2 (en) 2000-03-21 2002-07-30 Toyota Jidosha Kabushiki Kaisha Variable valve drive mechanism and intake air amount control apparatus of internal combustion engine
EP1255027A1 (fr) * 2001-05-03 2002-11-06 STS System Technology Services GmbH Contrôle mécanique de la levée variable d'une soupape d'admission d'un moteur à combustion interne
EP1347154A2 (fr) * 2002-03-20 2003-09-24 Hydraulik-Ring Gmbh Contrôleur de levée de soupapes d'un moteur à combustion interne
EP1387049A1 (fr) * 2002-08-02 2004-02-04 Bayerische Motoren Werke Aktiengesellschaft Culbuteur pour une commande de soupapes à levée variable
EP1387050A1 (fr) * 2002-08-02 2004-02-04 Bayerische Motoren Werke Aktiengesellschaft Culasse pour moteur à combustion interne avec commande de soupapes à levée variable
WO2004057160A1 (fr) * 2002-12-21 2004-07-08 Ina-Schaeffler Kg Levier intermediaire d'un mecanisme de commande variable de soupape d'un moteur a combustion interne
WO2004059133A1 (fr) * 2002-12-27 2004-07-15 Boesl-Flierl Gerlinde Dispositif d'actionnement de soupape permettant une regulation variable de soupapes d'echanges gazeux d'un moteur a combustion interne
EP1445434A1 (fr) * 2003-02-04 2004-08-11 Bayerische Motoren Werke Aktiengesellschaft Moteur à combustion interne avec soupapes à levée variable
US6932035B1 (en) 2005-01-28 2005-08-23 Ford Global Technologies, Llc Cylinder valve operating system for internal combustion engine
EP1619361A1 (fr) * 2003-05-01 2006-01-25 Yamaha Hatsudoki Kabushiki Kaisha Dispositif de deplacement de soupape pour moteur
EP1801368A1 (fr) * 2005-12-26 2007-06-27 Otics Corporation Mécanisme de fonctionnement à vanne à débit variable
KR100949524B1 (ko) 2002-06-20 2010-03-25 엔텍 컨설팅 게엠베하 연소 기관의 밸브용 스트로크 조정 장치
EP1921282A3 (fr) * 2006-10-31 2010-08-11 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Structure d'agencement d'un actionneur à commande électrique
WO2011080076A1 (fr) * 2009-12-16 2011-07-07 Iveco Motorenforschung Ag Système mécanique d'actionnement variable de soupape pour fonctionnements de moteur à deux temps et à quatre temps
DE102014114396A1 (de) * 2014-10-02 2016-04-07 Pierburg Gmbh Mechanisch steuerbarer Ventiltrieb sowie mechanisch steuerbare Ventiltriebanordnung

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10312961C5 (de) * 2003-03-24 2009-01-29 Thyssenkrupp Presta Teccenter Ag Vorrichtung zur variablen Betätigung der Gaswechselventile von Verbrennungsmotoren
EP1961927A3 (fr) 2003-03-29 2010-01-06 Hydraulik-Ring Gmbh Dispositif de levée variable de soupape pour le réglage de la levée des soupapes d'échange de gaz d'un moteur à combustion interne
JP4075811B2 (ja) * 2004-01-14 2008-04-16 トヨタ自動車株式会社 内燃機関の可変動弁機構故障診断装置
DE102015214115A1 (de) * 2015-07-27 2017-02-02 Bayerische Motoren Werke Aktiengesellschaft Hubvariabler Ventiltrieb für eine Brennkraftmaschine
DE102018207050A1 (de) * 2018-05-07 2019-11-07 Mahle International Gmbh Ventiltrieb für eine Brennkraftmaschine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983001483A1 (fr) 1981-10-13 1983-04-28 Investment Rarities Inc Mecanisme de fonctionnement variable des soupapes de moteurs a combustion interne
JPS62129509A (ja) * 1985-12-02 1987-06-11 Hitachi Ltd 内燃機関のバルブロツク機構
US5189998A (en) * 1991-07-23 1993-03-02 Atsugi Unisia Corporation Valve mechanism of internal combustion engine
DE9217241U1 (de) 1992-12-17 1993-05-13 Kirchner, Uwe, Dipl.-Ing., O-1420 Velten Einrichtung zur stufenlosen Variierung von Ventilhub und Steuerzeiten der Einlaß- und der Auslaßventile einer Hubkolbenbrennkraftmaschine
FR2693504A1 (fr) * 1992-07-08 1994-01-14 Honda Motor Co Ltd Dispositif de commande de soupape pour commander la soupape d'admission d'un moteur à combustion interne.
EP0638706A1 (fr) 1993-08-05 1995-02-15 Bayerische Motoren Werke Aktiengesellschaft Dispositif de commande d'actionnement des soupapes d'un moteur à combustion interne

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5656914A (en) * 1979-10-15 1981-05-19 Mazda Motor Corp Arrangement for intake valve of engine
JPH02241916A (ja) * 1989-03-16 1990-09-26 Fuji Valve Co Ltd エンジンバルブのリフト調節装置
JPH06123814A (ja) * 1992-10-13 1994-05-06 Furukawa Electric Co Ltd:The フィルタ付き光導波路部品の製造方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983001483A1 (fr) 1981-10-13 1983-04-28 Investment Rarities Inc Mecanisme de fonctionnement variable des soupapes de moteurs a combustion interne
JPS62129509A (ja) * 1985-12-02 1987-06-11 Hitachi Ltd 内燃機関のバルブロツク機構
US5189998A (en) * 1991-07-23 1993-03-02 Atsugi Unisia Corporation Valve mechanism of internal combustion engine
FR2693504A1 (fr) * 1992-07-08 1994-01-14 Honda Motor Co Ltd Dispositif de commande de soupape pour commander la soupape d'admission d'un moteur à combustion interne.
DE9217241U1 (de) 1992-12-17 1993-05-13 Kirchner, Uwe, Dipl.-Ing., O-1420 Velten Einrichtung zur stufenlosen Variierung von Ventilhub und Steuerzeiten der Einlaß- und der Auslaßventile einer Hubkolbenbrennkraftmaschine
EP0638706A1 (fr) 1993-08-05 1995-02-15 Bayerische Motoren Werke Aktiengesellschaft Dispositif de commande d'actionnement des soupapes d'un moteur à combustion interne

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 11, no. 348 (M - 642) 14 November 1987 (1987-11-14) *

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2322412A (en) * 1997-02-21 1998-08-26 T & N Technology Ltd Variable timing valve operating mechanism
EP1096115A1 (fr) * 1999-10-29 2001-05-02 STS System Technology Services GmbH Dispositif de régulation mécanique de la levée de soupape de moteur à combustion interne
US6425357B2 (en) 2000-03-21 2002-07-30 Toyota Jidosha Kabushiki Kaisha Variable valve drive mechanism and intake air amount control apparatus of internal combustion engine
US6792903B2 (en) 2001-05-03 2004-09-21 Sts System Technology Services Gmbh Mechanical control of the intake valve lift adjustment in an internal combustion engine
EP1255027A1 (fr) * 2001-05-03 2002-11-06 STS System Technology Services GmbH Contrôle mécanique de la levée variable d'une soupape d'admission d'un moteur à combustion interne
EP1347154A2 (fr) * 2002-03-20 2003-09-24 Hydraulik-Ring Gmbh Contrôleur de levée de soupapes d'un moteur à combustion interne
EP1347154B1 (fr) * 2002-03-20 2008-08-27 Hydraulik-Ring Gmbh Contrôleur de levée de soupapes d'un moteur à combustion interne
EP1832723A3 (fr) * 2002-03-20 2007-09-26 Hydraulik-Ring Gmbh Commande de soupape destinée à l'installation du moyeu de soupapes dans des véhicules automobiles
KR100949524B1 (ko) 2002-06-20 2010-03-25 엔텍 컨설팅 게엠베하 연소 기관의 밸브용 스트로크 조정 장치
EP1387050A1 (fr) * 2002-08-02 2004-02-04 Bayerische Motoren Werke Aktiengesellschaft Culasse pour moteur à combustion interne avec commande de soupapes à levée variable
EP1387049A1 (fr) * 2002-08-02 2004-02-04 Bayerische Motoren Werke Aktiengesellschaft Culbuteur pour une commande de soupapes à levée variable
WO2004057160A1 (fr) * 2002-12-21 2004-07-08 Ina-Schaeffler Kg Levier intermediaire d'un mecanisme de commande variable de soupape d'un moteur a combustion interne
US7055478B2 (en) 2002-12-21 2006-06-06 Ina-Schaeffler Kg Intermediate lever for a variable valve train of an internal combustion engine
CN100385095C (zh) * 2002-12-27 2008-04-30 格林德·博斯尔-弗利尔 用于内燃机的换气阀的可变阀门控制的阀致动设备
US7044094B2 (en) 2002-12-27 2006-05-16 Gerlinde Bosl-Flierl Valve-lift device for the variable control of gas-exchange valves of an internal combustion engine
WO2004059133A1 (fr) * 2002-12-27 2004-07-15 Boesl-Flierl Gerlinde Dispositif d'actionnement de soupape permettant une regulation variable de soupapes d'echanges gazeux d'un moteur a combustion interne
EP1445434A1 (fr) * 2003-02-04 2004-08-11 Bayerische Motoren Werke Aktiengesellschaft Moteur à combustion interne avec soupapes à levée variable
EP1619361A4 (fr) * 2003-05-01 2008-11-26 Yamaha Motor Co Ltd Dispositif de deplacement de soupape pour moteur
EP1619361A1 (fr) * 2003-05-01 2006-01-25 Yamaha Hatsudoki Kabushiki Kaisha Dispositif de deplacement de soupape pour moteur
US6932035B1 (en) 2005-01-28 2005-08-23 Ford Global Technologies, Llc Cylinder valve operating system for internal combustion engine
EP1801368A1 (fr) * 2005-12-26 2007-06-27 Otics Corporation Mécanisme de fonctionnement à vanne à débit variable
US7621242B2 (en) 2005-12-26 2009-11-24 Otics Corporation Variable valve operating mechanism
EP1921282A3 (fr) * 2006-10-31 2010-08-11 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Structure d'agencement d'un actionneur à commande électrique
WO2011080076A1 (fr) * 2009-12-16 2011-07-07 Iveco Motorenforschung Ag Système mécanique d'actionnement variable de soupape pour fonctionnements de moteur à deux temps et à quatre temps
US8584635B2 (en) 2009-12-16 2013-11-19 Iveco Motorenforschung Ag Mechanical variable valve actuation system for 2-stroke and 4-stroke engine operations
DE102014114396A1 (de) * 2014-10-02 2016-04-07 Pierburg Gmbh Mechanisch steuerbarer Ventiltrieb sowie mechanisch steuerbare Ventiltriebanordnung
EP3006684A1 (fr) * 2014-10-02 2016-04-13 Pierburg GmbH Commande de soupape a commande mecanique et systeme de commande de soupape pouvant etre commande

Also Published As

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