FR2907500A1 - Cylinder valve assembly for internal combustion engine, has adjusting pellet between two valve stems and pallet stem, where pellet is made of steel with shape memory and stem movable between opening and closed positions - Google Patents

Cylinder valve assembly for internal combustion engine, has adjusting pellet between two valve stems and pallet stem, where pellet is made of steel with shape memory and stem movable between opening and closed positions Download PDF

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Publication number
FR2907500A1
FR2907500A1 FR0609314A FR0609314A FR2907500A1 FR 2907500 A1 FR2907500 A1 FR 2907500A1 FR 0609314 A FR0609314 A FR 0609314A FR 0609314 A FR0609314 A FR 0609314A FR 2907500 A1 FR2907500 A1 FR 2907500A1
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FR
France
Prior art keywords
pellet
valve
stem
pallet
shape memory
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
FR0609314A
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French (fr)
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FR2907500B1 (en
Inventor
Emmanuel Talon
Severin Viennot
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.)
Valeo Systemes de Controle Moteur SAS
Original Assignee
Valeo Systemes de Controle Moteur SAS
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 Valeo Systemes de Controle Moteur SAS filed Critical Valeo Systemes de Controle Moteur SAS
Priority to FR0609314A priority Critical patent/FR2907500B1/en
Priority to PCT/FR2007/001705 priority patent/WO2008049995A2/en
Publication of FR2907500A1 publication Critical patent/FR2907500A1/en
Application granted granted Critical
Publication of FR2907500B1 publication Critical patent/FR2907500B1/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F01L1/20—Adjusting or compensating clearance
    • F01L1/205—Adjusting or compensating clearance by means of shims or the like
    • 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
    • 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
    • F01L1/245—Hydraulic tappets
    • 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
    • F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
    • F01L3/02—Selecting particular materials for valve-members or valve-seats; Valve-members or valve-seats composed of two or more materials
    • 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
    • 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
    • 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
    • F01L9/21—Valve-gear or valve arrangements actuated non-mechanically by electric means actuated by solenoids
    • F01L2009/2125—Shaft and armature construction
    • 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
    • F01L9/21—Valve-gear or valve arrangements actuated non-mechanically by electric means actuated by solenoids
    • F01L2009/2132—Biasing means
    • F01L2009/2134—Helical springs
    • F01L2009/2136—Two opposed springs for intermediate resting position of the armature
    • 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
    • F01L2301/00—Using particular materials

Landscapes

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

Abstract

The assembly has an adjusting pellet (17) between two valve stems (3) and a pallet stem (8). The stems (3) are movable between opening position and closed position. The pellet (17) is made of AMF steel with a shape memory.

Description

L'invention concerne la commande des soupapes de cylindres des moteurs àThe invention relates to the control of the cylinder valves of the engines

combustion interne par un arbre sans came, plus précisément par ce qu'on appelle un arbre à cames électromagnétique, qu'on qualifie de technologie sans came (Camless). Selon cette technologie, une soupape, qu'il s'agisse de l'admission ou de l'échappement, est rappelée sur son siège par un ressort de soupape montée autour io d'une tige de soupape et, sous l'action d'une palette d'électroaimant en matériau magnétique est d'un électroaimant d'ouverture, la soupape est écartée de son siège par une tige de la palette repoussant la tige de soupape. L'électroaimant d'ouverture est associé à un électroaimant de fermeture, la palette étant montée entre les deux électroaimants. Quand aucun des deux électroaimants n'est activé, la palette est 15 maintenue entre les deux par le ressort de soupape et un ressort de palette monté autour de sa tige. Entre la queue de la tige de soupape et la tige de palette est ménagé un jeu dit de distribution. Ce jeu permet à l'une des tiges de soupape et de palette de coulisser 20 quand l'autre est immobile. Ce jeu permet d'assurer le rappel de la soupape en position de fermeture, c"est-à-dire qu'il permet d'assurer l'étanchéité. Dans cette position, dans laquelle la queue de soupape est éloignée de la tige de palette, la force exercée par l'électroaimant de fermeture ne s'oppose qu'à l'action du ressort de la palette. 25 Ainsi, la soupape et la palette alternent des positions fixes, dites commutées, avec des déplacements transitoires entre ces positions. L'existence du jeu de distribution pose des problèmes, tant au niveau système que des lois de commande. En effet, il impose de contrôler les percussions queue de soupape - tige de palette ; il complique totalement le contrôle serré du 2907500 2 moment de l'ouverture de soupape ; il détériore dans des proportions importantes la consommation du système Camless. L'invention vise à résoudre tout ou partie de ces problèmes. On soulignera que l'invention tire son origine de la prise en compte du fait que quand le 5 moteur monte en température, le jeu de distribution entre les deux tiges de soupape et de palette augmente. Ainsi, l'invention concerne un ensemble d'une soupape de cylindre de moteur à combustion interne rappelée en position de fermeture sur un siège par un ressort disposé autour d'une tige de soupape et un actionneur de rappel de la soupape en position d'ouverture comprenant une palette disposée entre deux électroaimants et prolongée par une tige de palette agencée pour coopérer avec la tige de soupape, ensemble caractérisé par le fait qu'il est prévu une pastille de réglage entre les deux tiges de soupape et de palette, en matériau à mémoire de forme.  internal combustion by a camless shaft, more precisely by what is called an electromagnetic camshaft, which is called camless technology. According to this technology, a valve, be it the intake or the exhaust, is returned to its seat by a valve spring mounted around a valve stem and, under the action of a solenoid pallet of magnetic material is of an opening electromagnet, the valve is moved away from its seat by a shaft of the pallet pushing the valve stem. The opening electromagnet is associated with a closing electromagnet, the pallet being mounted between the two electromagnets. When neither of the two electromagnets is activated, the pallet is held between the two by the valve spring and a pallet spring mounted around its stem. Between the tail of the valve stem and the pallet rod is formed a game called distribution. This clearance allows one of the valve and paddle stems to slide when the other is stationary. This clearance makes it possible to ensure the return of the valve in the closed position, that is to say that it makes it possible to seal in this position, in which the valve stem is moved away from the valve stem. In this case, the force exerted by the closing electromagnet opposes only the action of the spring of the pallet Thus, the valve and the pallet alternate fixed, so-called switched positions with transient displacements between these positions. The existence of the distribution set poses problems, both at the system level and the control laws, because it imposes to control the valve stem - pallet rod percussion, it completely complicates the tight control of the 2907500 2 moment of control. The invention aims to solve all or part of these problems, it should be emphasized that the invention originates from the fact that when the 5 engine temperature rises, the distribution gap between the two valve and vane stems increases. Thus, the invention relates to an assembly of an internal combustion engine cylinder valve biased in the closed position on a seat by a spring disposed around a valve stem and a valve return actuator in the position of opening comprising a pallet arranged between two electromagnets and extended by a pallet rod arranged to cooperate with the valve stem, together characterized in that there is provided a control pad between the two valve and pallet shafts, made of material with shape memory.

Ainsi, le jeu entre les deux tiges est comblé par le jeu et l'inconvénient des percussions des deux tiges l'une sur l'autre n'existe plus et, du fait de " l'élasticité " de la pastille, quand le moteur monte en température, la pastille s'étend pour continuer de maintenir comblé le jeu agrandi entre les deux tiges. Naturellement, la contrainte en réaction appliquée par la pastille sur la soupape doit rester très inférieure au tarage du ressort correspondant à l'effort d'application de soupape sur son siège pour assurer l'étanchéité souhaitée. L'invention sera mieux comprise à l'aide de la description suivante de l'art antérieur et de l'ensemble de la soupape et d'actionneur de l'invention, en référence au dessin en annexe, sur lequel : - la figure 1 est une vue en partie en coupe d'un ensemble de soupape et d'actionneur de l'art antérieur ; - la figure 2 est une vue schématique de l'ensemble de l'invention et ; - la figure 3 est une vue de l'ensemble de la figure 2 à une température plus élevée.  Thus, the play between the two rods is filled by play and the disadvantage of the percussion of the two rods one over the other no longer exists and, because of the "elasticity" of the chip, when the motor temperature increases, the pellet extends to continue to fill the gap between the two stems. Naturally, the reaction stress applied by the pellet on the valve must remain much lower than the calibration of the spring corresponding to the valve application force on its seat to ensure the desired seal. The invention will be better understood with the aid of the following description of the prior art and of the assembly of the valve and actuator of the invention, with reference to the drawing in the appendix, in which: FIG. 1 is a sectional view of a valve and actuator assembly of the prior art; FIG. 2 is a schematic view of the assembly of the invention and - Figure 3 is a view of the assembly of Figure 2 at a higher temperature.

2907500 3 En référence à la figure 1, il est ménage dans la culasse 1 d'un moteur à combustion interne, une pluralité de cylindres 2 dans chacun desquels une tige de soupape 3 est montée mobile entre une position d'ouverture et une position de fermeture dans laquelle la soupape 4 et en appui sur un siège 7 pour obturer un canal 5 d'admission ou d'échappement 5. La soupape 4 est rappelée sur son siège 7 par un ressort de soupape 16 en appui contre le fond 6 du cylindre 2 correspondant et une butée 7 montée sur la tige de soupape. La soupape 4 est sortie de son appui sur son siège 7 par une tige de palette 8 qui prolonge la palette 9 en matériau magnétique. La palette 9 d'actionnement de la soupape est montée mobile entre deux 10 électroaimants d'ouverture 10 et de fermeture 11. Le déplacement de la palette 9 dans sa course d'actionnement de la soupape 4 s'effectue sous l'action d'un ressort de palette 12 en appui contre une paroi 13 du clavier et une butée 15 montée sur la tige de palette 8. Il est prévu entre les deux tiges 3, 8 un jeu de distribution " j ". En référence aux figures 2 et 3, l'ensemble de soupape et de son 15 actionneur de rappel de l'invention comporte, tout comme l'ensemble de l'art antérieur de la figure 1, et les mêmes éléments y sont désignés par les mêmes références, une soupape 4, sa tige 3, son siège 7 et son ressort 16, d'une part, et une palette 9, sa tige 8 et son ressort 12, d'autre part, ainsi que les éléments y associés de l'ensemble de la figure 1, non représentés sur les figures 2 et 3 par souci de 20 simplicité. Le ressort 16 est destiné à rappeler la soupape 4 en position d'ouverture. La palette 9 est toujours disposée entre deux électroaimants et quand ils ne sont pas activés, la palette 9 est maintenue entre les deux par le ressort 12. La tige de palette 8 et la tige de soupape 3 coopérent entre elles par 25 l'intermédiaire d'une pastille de réglage 17 en matériau à mémoire de forme (MF), ici de l'acier AMF. La pastille 17 comble le jeu entre les deux tiges 8, 3 et ce, quelle que soit la température, du fait de l'élasticité de la pastille. Ainsi, à température élevée (figure 3), la pastille 17 s'étend pour continuer de maintenir comblé, c'est-à- dire pour rattraper, le jeu agrandi entre les deux tiges 8, 3 avant qu'elle ne reprenne 2907500 4 sa forme d'origine si la température baisse. Plus précisément, la pastille 17 est fixée sur la queue de la tige de soupape 3, ici par soudage, et elle est montée à l'origine contrainte entre les deux tiges 8, 3. Lors de la montée en température du moteur, la distance entre les queues 5 des deux tiges 8, 3 augmente mais le jeu est rattrapé par la pastille. Grâce à l'invention, on élimine le cliquetis et on assure une bonne étanchéité quand la soupape 4 est en appui sur son siège 7.Referring to Figure 1, there is arranged in the cylinder head 1 of an internal combustion engine, a plurality of cylinders 2 in each of which a valve stem 3 is movably mounted between an open position and a position of closing in which the valve 4 and resting on a seat 7 to close an intake or exhaust channel 5. The valve 4 is returned to its seat 7 by a valve spring 16 bearing against the bottom 6 of the cylinder 2 corresponding and a stop 7 mounted on the valve stem. The valve 4 is released from its support on its seat 7 by a pallet rod 8 which extends the pallet 9 of magnetic material. The valve actuator pad 9 is movably mounted between two opening and closing electromagnets 11. The displacement of the paddle 9 in its actuating stroke of the valve 4 takes place under the action of a pallet spring 12 bearing against a wall 13 of the keyboard and a stop 15 mounted on the pallet rod 8. There is provided between the two rods 3, 8 a dispensing set "j". With reference to FIGS. 2 and 3, the valve assembly and its booster actuator of the invention, like all the prior art of FIG. 1, and the same elements are designated by the FIG. same references, a valve 4, its rod 3, its seat 7 and its spring 16, on the one hand, and a pallet 9, its rod 8 and its spring 12, on the other hand, as well as the associated elements of the 1 together, not shown in Figures 2 and 3 for the sake of simplicity. The spring 16 is intended to return the valve 4 in the open position. The pallet 9 is always arranged between two electromagnets and when they are not activated, the pallet 9 is held between the two by the spring 12. The paddle rod 8 and the valve stem 3 cooperate with each other via the spring. a setting pad 17 made of shape memory material (MF), here AMF steel. The pellet 17 fills the clearance between the two rods 8, 3 and whatever the temperature, because of the elasticity of the pellet. Thus, at high temperature (FIG. 3), the wafer 17 extends to continue to keep filled, that is to say, to make up for the enlarged clearance between the two rods 8, 3 before it resumes 2907500. its original form if the temperature drops. More specifically, the pellet 17 is fixed on the tail of the valve stem 3, here by welding, and it is originally mounted constraint between the two rods 8, 3. During the temperature rise of the engine, the distance between the tails 5 of the two rods 8, 3 increases but the game is caught by the pellet. Thanks to the invention, it eliminates the rattling and ensures a good seal when the valve 4 is resting on its seat 7.

Claims (3)

REVENDICATIONS 1. Ensemble d'une soupape (4) de cylindre de moteur à combustion interne rappelée en position de fermeture sur un siège (7) par un ressort (16) disposé autour d'une tige de soupape (3) et d'un actionneur (14) de rappel de la soupape (4) en position d'ouverture comprenant une palette (9) disposée entre deux électroaimants (10, 11) et prolongée par une tige de palette (8) agencée pour coopérer avec la tige de soupape (3), ensemble caractérisé par le fait qu'il est prévu une pastille de réglage (17) entre les deux tiges de soupape (3) io et de palette (8), en matériau à mémoire de forme.  1. An assembly of an internal combustion engine cylinder valve (4) biased into a seat position (7) by a spring (16) disposed around a valve stem (3) and an actuator (14) for returning the valve (4) in the open position comprising a pallet (9) arranged between two electromagnets (10, 11) and extended by a pallet rod (8) arranged to cooperate with the valve stem ( 3), characterized in that a control pad (17) is provided between the two valve (3) and paddle (8) rods of shape memory material. 2. Ensemble selon la revendication 1, dans lequel la pastille de réglage (17) est en acier (AMF). 15  2. The assembly of claim 1, wherein the adjustment pad (17) is steel (AMF). 15 3. Ensemble selon l'une des revendications 1 et 2, dans lequel la pastille de réglage (17), est montée contrainte entre les deux tiges de soupape et de palette (3, 8).  3. An assembly according to one of claims 1 and 2, wherein the adjustment pad (17) is mounted constrained between the two valve and paddle rods (3, 8).
FR0609314A 2006-10-24 2006-10-24 VALVE ASSEMBLY OF CYLINDER VALVE AND VALVE REMOVER ACTUATOR Expired - Fee Related FR2907500B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR0609314A FR2907500B1 (en) 2006-10-24 2006-10-24 VALVE ASSEMBLY OF CYLINDER VALVE AND VALVE REMOVER ACTUATOR
PCT/FR2007/001705 WO2008049995A2 (en) 2006-10-24 2007-10-17 Assembly consisting of an engine cylinder valve and of an actuator with clearance compensating end stop

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0609314A FR2907500B1 (en) 2006-10-24 2006-10-24 VALVE ASSEMBLY OF CYLINDER VALVE AND VALVE REMOVER ACTUATOR

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Publication Number Publication Date
FR2907500A1 true FR2907500A1 (en) 2008-04-25
FR2907500B1 FR2907500B1 (en) 2009-01-23

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FR0609314A Expired - Fee Related FR2907500B1 (en) 2006-10-24 2006-10-24 VALVE ASSEMBLY OF CYLINDER VALVE AND VALVE REMOVER ACTUATOR

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WO (1) WO2008049995A2 (en)

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR918309A (en) * 1945-08-09 1947-02-05 Process for increasing the wear resistance of valves, in particular those made of stainless steel
EP0296619A1 (en) * 1987-06-25 1988-12-28 Kawasaki Jukogyo Kabushiki Kaisha Composite valve for reciprocating engines and method for manufacturing the same
FR2713361A1 (en) * 1993-12-06 1995-06-09 Vincent Eric Thermostatic fluid or gas regulator
DE19529155A1 (en) * 1995-08-08 1997-02-13 Fev Motorentech Gmbh & Co Kg Method for measuring the valve clearance on a gas exchange valve actuated by an electromagnetic actuator
DE19712055A1 (en) * 1997-03-24 1998-10-01 Braunewell Markus Solenoid-driven valve for internal combustion engine
DE19955054A1 (en) * 1998-11-16 2000-08-17 Heinz Leiber Electromagnetic actuator with torsion spring connected to lever by tube and extending partly into tube
FR2792679A1 (en) * 1999-04-23 2000-10-27 Sagem Linear displacement valve command having valve spoke platform driven and unit main cylinder held with adjustable toothed wheel section and shoulder spring pushing.
JP2000314483A (en) * 1999-04-30 2000-11-14 Toyota Motor Corp Solenoid-driven valve
JP2001152819A (en) * 1999-11-26 2001-06-05 Denso Corp Valve driving device
FR2821655A1 (en) * 2001-03-05 2002-09-06 Sagem Valve operating gear has elastic buffer mounted between two locating components connected to operating rod and valve spindle respectively, with at least one locating component lying upon end face of elastic buffer
EP1340889A2 (en) * 2002-02-28 2003-09-03 TRW Deutschland GmbH Actuator for camless valve drive in an internal combustion engine

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Publication number Priority date Publication date Assignee Title
DE3311280A1 (en) * 1983-03-28 1984-10-11 FEV Forschungsgesellschaft für Energietechnik und Verbrennungsmotoren mbH, 5100 Aachen Hydraulic valve-clearance compensating element
US4590899A (en) * 1985-05-17 1986-05-27 Stanadyne, Inc. Self-contained lash adjuster with shell mounted cartridge assembly
FR2674570B1 (en) * 1991-03-25 1995-02-10 Renault HYDRAULIC PUSH-BUTTON FOR THERMAL ENGINES, COMPRISING AN OIL CONTAINING OIL.
DE19947848A1 (en) * 1998-10-28 2000-05-04 Fev Motorentech Gmbh Actuator for operating gas exchange valve in internal combustion engine has length compensated coupling element between control elements
JP2003065461A (en) * 2001-08-24 2003-03-05 Toyota Motor Corp Controller for solenoid valve
JP2005351218A (en) * 2004-06-11 2005-12-22 Toyota Motor Corp Electromagnetically driven valve
JP2006070968A (en) * 2004-09-01 2006-03-16 Toyota Motor Corp Solenoid driving valve

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR918309A (en) * 1945-08-09 1947-02-05 Process for increasing the wear resistance of valves, in particular those made of stainless steel
EP0296619A1 (en) * 1987-06-25 1988-12-28 Kawasaki Jukogyo Kabushiki Kaisha Composite valve for reciprocating engines and method for manufacturing the same
FR2713361A1 (en) * 1993-12-06 1995-06-09 Vincent Eric Thermostatic fluid or gas regulator
DE19529155A1 (en) * 1995-08-08 1997-02-13 Fev Motorentech Gmbh & Co Kg Method for measuring the valve clearance on a gas exchange valve actuated by an electromagnetic actuator
DE19712055A1 (en) * 1997-03-24 1998-10-01 Braunewell Markus Solenoid-driven valve for internal combustion engine
DE19955054A1 (en) * 1998-11-16 2000-08-17 Heinz Leiber Electromagnetic actuator with torsion spring connected to lever by tube and extending partly into tube
FR2792679A1 (en) * 1999-04-23 2000-10-27 Sagem Linear displacement valve command having valve spoke platform driven and unit main cylinder held with adjustable toothed wheel section and shoulder spring pushing.
JP2000314483A (en) * 1999-04-30 2000-11-14 Toyota Motor Corp Solenoid-driven valve
JP2001152819A (en) * 1999-11-26 2001-06-05 Denso Corp Valve driving device
FR2821655A1 (en) * 2001-03-05 2002-09-06 Sagem Valve operating gear has elastic buffer mounted between two locating components connected to operating rod and valve spindle respectively, with at least one locating component lying upon end face of elastic buffer
EP1340889A2 (en) * 2002-02-28 2003-09-03 TRW Deutschland GmbH Actuator for camless valve drive in an internal combustion engine

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WO2008049995A2 (en) 2008-05-02
FR2907500B1 (en) 2009-01-23
WO2008049995A3 (en) 2008-06-19

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