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EP0471614A1 - Ventilbetätigungsvorrichtung, insbesondere in einer Brennkraftmaschine - Google Patents

Ventilbetätigungsvorrichtung, insbesondere in einer Brennkraftmaschine Download PDF

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Publication number
EP0471614A1
EP0471614A1 EP91402218A EP91402218A EP0471614A1 EP 0471614 A1 EP0471614 A1 EP 0471614A1 EP 91402218 A EP91402218 A EP 91402218A EP 91402218 A EP91402218 A EP 91402218A EP 0471614 A1 EP0471614 A1 EP 0471614A1
Authority
EP
European Patent Office
Prior art keywords
valve
actuating device
plate
stop
stop member
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Withdrawn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
EP91402218A
Other languages
English (en)
French (fr)
Inventor
François 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.)
Renault SAS
Regie Nationale des Usines Renault
Original Assignee
Renault SAS
Regie Nationale des Usines Renault
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 Renault SAS, Regie Nationale des Usines Renault filed Critical Renault SAS
Publication of EP0471614A1 publication Critical patent/EP0471614A1/de
Withdrawn legal-status Critical Current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
    • F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means

Definitions

  • the present invention relates to a valve actuation device, an internal combustion engine which is mounted in particular on motor vehicles.
  • variable distribution involves adapting the actuation of the intake and exhaust valves to the operation of the engine.
  • valve actuation devices To adapt the distribution to the operation of the engine, to achieve the best power-consumption-pollution compromise at all times, the valve actuation devices must be able to act freely on each of the three parameters mentioned above without any constraint of dependence between its three quantities .
  • the present invention aims to solve this problem by proposing an actuating device allowing total freedom of choice: instants of opening, closing and lifting of the valve, without any constraint of dependence between these quantities.
  • the actuation device comprises a plate secured to the valve stem, two thrust springs bearing on the opposite sides of the plate and means for blocking the plate in two limit positions located on either side another from a position of equilibrium.
  • the actuating device is characterized in that one of the locking means cooperates with a member for adjusting the limit position in correspondence with this locking means and in that one of the springs is also resting on this adjustment member.
  • the operating movement of the plate and consequently of the valve is triggered by the springs, constrained differently in the limit positions by the locking means.
  • the limit position, corresponding to the open valve, can be moved, by means of an adjustment member, so as to vary the stroke of the valve.
  • the modification of the valve stroke takes place without modifying the system for controlling the instants of opening or closing the valve because the blocking means associated with said limit position as well as one of the thrust springs are integral of the adjustment member.
  • the locking means are constituted by magnetization means mounted, on either side of the plate, in a first fixed stop member and in a second adjustable stop member.
  • the second adjustable stop member carries at its periphery a toothing intended to mesh with a control pinion and comprises a cylindrical sliding bearing mounted in a bore of the first fixed stop member.
  • the actuating device a system for adjusting the stroke of the valve which is particularly simple to implement. It suffices to control the rotation of the pinion from one or more engine operating parameters to adapt the valve lift.
  • the valve (1) in accordance with the figure, is guided slidingly by its rod (2) in a guide (3) mounted in the cylinder head (4) of an internal combustion engine up to a seat (5) for the valve head (6) (1).
  • the end of the rod (2) opposite the head (6) moves in a cavity (7) formed in the cylinder head (4) and closed by a screwed cover (10).
  • the cavity (7) consists of two housings (8) and (9) forming between them a shoulder (11).
  • the end of the rod (2) carries an operating plate (12) fixed by a nut (13).
  • the plate (12) can be moved between two stops: corresponding to two limit positions of the valve: a fixed upper stop (15) where the valve (1) is in the closed position bearing on its seat (5) and a lower stop adjustable (14) where the valve (1) is in the open position.
  • the distance between the two stops (14) and (15) determines the stroke of the valve (1).
  • the adjustable stop (14) is a member of revolution, coaxial with the valve (1) disposed in the housing (8).
  • the stop (14) has a central bore (18) allowing the passage of the rod (2) of the valve (1), of its guide (3).
  • the lower end of the bore (18) carries a shoulder (19) against which the thrust spring (16) bears.
  • the stop (14) has a cylindrical sliding surface (20) mounted in a bore (21) of the fixed stop (15).
  • the adjustable stop carries at its periphery a toothing (22) intended to mesh with a pinion (23) of which the conventional electrical or mechanical control device is not shown.
  • the teeth (22) are straight or preferably helical.
  • the stop (15) which is also a member of revolution coaxial with the valve (1) is immobilized in the housing (9), on the shoulder (11) of the cylinder head (4) by the screwed cover (10) in support on its upper side.
  • the stop (15) has a bore (24) for the passage of the valve stem (2) and the spring (17). This bore (24) is extended by the bore (21) in which the bearing (20) of the stop (14) is slidably mounted.
  • Each stopper is provided with plate locking means constituted by electromagnetic magnet coils (26) and (25) which develop, when supplied, electromagnetic attraction forces greater than the thrust forces of the springs ( 16) and (17). These coils are embedded in the stop faces (27) and (28) of the stops (14) and (15), against which comes to stop the plate.
  • the stop face (27) is constituted by the upper face of the cylindrical sliding surface (20) and the stop face (28) by the shoulder defined by the bores (24) and (21).
  • the power supply and the device for controlling the coils (14) and (15) have not been shown.
  • the electromagnetic coils (26, 25) are coupled with permanent magnets, the blocking of the plate is carried out by the permanent magnets, the unlocking being effected by the electromagnetic coils which generate a magnetic field opposite to that permanent magnets.
  • the valve (1) is initially in the closed limit position, its plate (12) bears against the stop (15) subjected to the attraction of magnetization means (26). At a determined instant, the attraction of the magnetization means (26) is stopped, the plate (12) released is then accelerated towards the limit open position by the relaxation of the compressed spring (17). The arrival against the stop (14) takes place at a substantially zero speed due to the braking effected by the compression of the spring (16). The plate (12) is then again blocked by the magnetization means (25). The valve closes quite symmetrically.
  • the adjustable member (14) makes it possible to modify the stroke of the valve (1) without interfering with the operation of the valve.
  • valve (1) if it were only under the action of the springs (16, 17) would always occupy a position of central balance with respect to the two limit positions, the fulcrum of the spring (16) moving with the stop (14). Therefore, whatever the valve lift, opening and closing are identical.
  • the present device makes it possible to actuate a valve while freely controlling the opening time, the closing time and the stroke or lift and this in a particularly simple manner.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
EP91402218A 1990-08-17 1991-08-09 Ventilbetätigungsvorrichtung, insbesondere in einer Brennkraftmaschine Withdrawn EP0471614A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR909010410A FR2665926B1 (fr) 1990-08-17 1990-08-17 Dispositif d'actionnement pour soupape notamment dans un moteur a combustion interne.
FR9010410 1990-08-17

Publications (1)

Publication Number Publication Date
EP0471614A1 true EP0471614A1 (de) 1992-02-19

Family

ID=9399705

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91402218A Withdrawn EP0471614A1 (de) 1990-08-17 1991-08-09 Ventilbetätigungsvorrichtung, insbesondere in einer Brennkraftmaschine

Country Status (2)

Country Link
EP (1) EP0471614A1 (de)
FR (1) FR2665926B1 (de)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0722039A1 (de) * 1995-01-11 1996-07-17 Toyota Jidosha Kabushiki Kaisha Betätigungsvorrichtung für ein Ventil einer Brennkraftmaschine
US5558054A (en) * 1995-06-07 1996-09-24 Southwest Research Institute Variable preload system for valve springs
EP0821140A1 (de) * 1996-07-24 1998-01-28 Honda Giken Kogyo Kabushiki Kaisha Ventiltriebvorrichtung in Brennkraftmaschine
DE19723520A1 (de) * 1997-06-05 1998-12-10 Daimler Benz Ag Verfahren zum lagerichtigen Fixieren einer Ankerplatte einer elektromagnetischen Ventilsteuerung, sowie elektromagnetische Ventilsteuerung
DE19747009A1 (de) * 1997-10-24 1999-04-29 Daimler Chrysler Ag Elektromagnetischer Aktuator zur Betätigung eines Gaswechselventils
US5941201A (en) * 1996-08-21 1999-08-24 Honda Giken Kogyo Kabushiki Kaisha Valve operating system in internal combustion engine
DE19805177A1 (de) * 1998-02-10 1999-08-26 Daimler Chrysler Ag Betätigungsvorrichtung mit einem elektromagnetischen Aktuator für ein Gaswechselventil und Verfahren hierzu
DE19825412A1 (de) * 1998-06-06 1999-12-09 Daimler Chrysler Ag Vorrichtung zum Betätigen eines Gaswechselventils
FR2792679A1 (fr) * 1999-04-23 2000-10-27 Sagem Dispositif reglable de commande de soupapes et procede de reglage d'un tel dispositif
FR2804716A1 (fr) * 2000-02-07 2001-08-10 Peugeot Citroen Automobiles Sa Procede de commande de l'ouverture d'une soupape d'echappement pour un moteur a distribution electromecanique
DE19951098C2 (de) * 1999-10-23 2002-01-03 Daimler Chrysler Ag Vorrichtung zum Betätigen eines Gaswechselventils
EP1264968A2 (de) * 2001-06-08 2002-12-11 TRW Deutschland GmbH Vorrichtung zur Betätigung eines Gaswechselventils mit variablem Hub in einer Brennkraftmaschine
WO2003018965A1 (de) 2001-08-21 2003-03-06 Robert Bosch Gmbh Ventilmechanismus mit einem variablen ventilöffnungsquerschnitt
JP2008069683A (ja) * 2006-09-13 2008-03-27 Honda Motor Co Ltd エンジンの電磁動弁装置
DE102007048688A1 (de) 2007-10-10 2009-04-16 Uwe Hammer Vorrichtung zur Steuerung von Gaswechselventilen von Brennkraftmaschinen
EP2063076A1 (de) * 2006-09-13 2009-05-27 Honda Motor Co., Ltd Elektromagnetische ventilvorrichtung für motor
CN102966402A (zh) * 2012-11-12 2013-03-13 上海交通大学 增压发动机进排气气门升程同步可调系统
CN102966401A (zh) * 2012-11-06 2013-03-13 上海交通大学 双弹簧同步压缩式机械系统
CN102979592A (zh) * 2012-11-06 2013-03-20 上海交通大学 气门上下段间距调节装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4777915A (en) * 1986-12-22 1988-10-18 General Motors Corporation Variable lift electromagnetic valve actuator system
EP0328194A1 (de) * 1988-02-08 1989-08-16 Magnavox Electronic Systems Company Ventilvorrichtung mit potentiellem magnetischen Antrieb

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4777915A (en) * 1986-12-22 1988-10-18 General Motors Corporation Variable lift electromagnetic valve actuator system
EP0328194A1 (de) * 1988-02-08 1989-08-16 Magnavox Electronic Systems Company Ventilvorrichtung mit potentiellem magnetischen Antrieb

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5611303A (en) * 1995-01-11 1997-03-18 Toyota Jidosha Kabushiki Kaisha Valve operating apparatus of internal combustion engine
EP0722039A1 (de) * 1995-01-11 1996-07-17 Toyota Jidosha Kabushiki Kaisha Betätigungsvorrichtung für ein Ventil einer Brennkraftmaschine
US5558054A (en) * 1995-06-07 1996-09-24 Southwest Research Institute Variable preload system for valve springs
EP0821140A1 (de) * 1996-07-24 1998-01-28 Honda Giken Kogyo Kabushiki Kaisha Ventiltriebvorrichtung in Brennkraftmaschine
US5979376A (en) * 1996-07-24 1999-11-09 Honda Giken Kogyo Kabushiki Kaisha Valve operating system in internal combustion engine
US5941201A (en) * 1996-08-21 1999-08-24 Honda Giken Kogyo Kabushiki Kaisha Valve operating system in internal combustion engine
DE19723520A1 (de) * 1997-06-05 1998-12-10 Daimler Benz Ag Verfahren zum lagerichtigen Fixieren einer Ankerplatte einer elektromagnetischen Ventilsteuerung, sowie elektromagnetische Ventilsteuerung
DE19747009C2 (de) * 1997-10-24 2000-11-16 Daimler Chrysler Ag Elektromagnetischer Aktuator zur Betätigung eines Gaswechselventils
DE19747009A1 (de) * 1997-10-24 1999-04-29 Daimler Chrysler Ag Elektromagnetischer Aktuator zur Betätigung eines Gaswechselventils
DE19805177A1 (de) * 1998-02-10 1999-08-26 Daimler Chrysler Ag Betätigungsvorrichtung mit einem elektromagnetischen Aktuator für ein Gaswechselventil und Verfahren hierzu
DE19805177C2 (de) * 1998-02-10 2001-03-08 Daimler Chrysler Ag Betätigungsvorrichtung mit einem elektromagnetischen Aktuator für ein Gaswechselventil und Verfahren hierzu
DE19825412C2 (de) * 1998-06-06 2001-10-25 Daimler Chrysler Ag Vorrichtung zum Betätigen eines Gaswechselventils
DE19825412A1 (de) * 1998-06-06 1999-12-09 Daimler Chrysler Ag Vorrichtung zum Betätigen eines Gaswechselventils
WO2000065203A1 (fr) * 1999-04-23 2000-11-02 Sagem Sa Dispositif reglable de commande de soupapes et procede de reglage d'un tel dispositif
FR2792679A1 (fr) * 1999-04-23 2000-10-27 Sagem Dispositif reglable de commande de soupapes et procede de reglage d'un tel dispositif
US6418892B1 (en) 1999-04-23 2002-07-16 Sagem Sa Adjustable device for valve control and method for adjusting same
JP2010164058A (ja) * 1999-04-23 2010-07-29 Johnson Controls Automotive Electronics バルブ制御のための調整可能装置及び調整方法
KR100714388B1 (ko) * 1999-04-23 2007-05-07 죤슨 컨트롤즈 오토모티브 일렉트로닉스 밸브 제어를 위한 조정 장치 및 조정 방법
DE19951098C2 (de) * 1999-10-23 2002-01-03 Daimler Chrysler Ag Vorrichtung zum Betätigen eines Gaswechselventils
FR2804716A1 (fr) * 2000-02-07 2001-08-10 Peugeot Citroen Automobiles Sa Procede de commande de l'ouverture d'une soupape d'echappement pour un moteur a distribution electromecanique
EP1138884A1 (de) * 2000-02-07 2001-10-04 Peugeot Citroen Automobiles SA Verfahren zum Voröffnen eines Auslassventils für einen Motor mit einem elektromechanischen Ventilmechanismus
US6684829B2 (en) 2001-06-08 2004-02-03 Trw Deutschland Gmbh Device to actuate a gas shuttle valve in an internal combustion engine
EP1264968A2 (de) * 2001-06-08 2002-12-11 TRW Deutschland GmbH Vorrichtung zur Betätigung eines Gaswechselventils mit variablem Hub in einer Brennkraftmaschine
EP1264968A3 (de) * 2001-06-08 2003-08-13 TRW Deutschland GmbH Vorrichtung zur Betätigung eines Gaswechselventils mit variablem Hub in einer Brennkraftmaschine
WO2003018965A1 (de) 2001-08-21 2003-03-06 Robert Bosch Gmbh Ventilmechanismus mit einem variablen ventilöffnungsquerschnitt
JP2008069683A (ja) * 2006-09-13 2008-03-27 Honda Motor Co Ltd エンジンの電磁動弁装置
EP2063076A1 (de) * 2006-09-13 2009-05-27 Honda Motor Co., Ltd Elektromagnetische ventilvorrichtung für motor
EP2063076A4 (de) * 2006-09-13 2010-05-05 Honda Motor Co Ltd Elektromagnetische ventilvorrichtung für motor
DE102007048688A1 (de) 2007-10-10 2009-04-16 Uwe Hammer Vorrichtung zur Steuerung von Gaswechselventilen von Brennkraftmaschinen
CN102966401A (zh) * 2012-11-06 2013-03-13 上海交通大学 双弹簧同步压缩式机械系统
CN102979592A (zh) * 2012-11-06 2013-03-20 上海交通大学 气门上下段间距调节装置
CN102966401B (zh) * 2012-11-06 2014-12-10 上海交通大学 双弹簧同步压缩式机械系统
CN102979592B (zh) * 2012-11-06 2014-12-10 上海交通大学 气门上下段间距调节装置
CN102966402A (zh) * 2012-11-12 2013-03-13 上海交通大学 增压发动机进排气气门升程同步可调系统
CN102966402B (zh) * 2012-11-12 2014-12-10 上海交通大学 增压发动机进排气气门升程同步可调系统

Also Published As

Publication number Publication date
FR2665926A1 (fr) 1992-02-21
FR2665926B1 (fr) 1994-07-01

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