WO2012085377A1 - Drive system and electromagnetic actuator with improved cooling - Google Patents

Drive system and electromagnetic actuator with improved cooling Download PDF

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Publication number
WO2012085377A1
WO2012085377A1 PCT/FR2011/052790 FR2011052790W WO2012085377A1 WO 2012085377 A1 WO2012085377 A1 WO 2012085377A1 FR 2011052790 W FR2011052790 W FR 2011052790W WO 2012085377 A1 WO2012085377 A1 WO 2012085377A1
Authority
WO
WIPO (PCT)
Prior art keywords
actuator
electronic circuit
housing
engine
motor
Prior art date
Application number
PCT/FR2011/052790
Other languages
French (fr)
Inventor
François Machet
Dominique Dupuis
Emmanuel Talon
Danilo Falchi
Original Assignee
Valeo Systemes De Controle Moteur
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 filed Critical Valeo Systemes De Controle Moteur
Priority to EP11801778.9A priority Critical patent/EP2655824B1/en
Priority to JP2013545460A priority patent/JP2014500440A/en
Publication of WO2012085377A1 publication Critical patent/WO2012085377A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/12—Arrangements for cooling other engine or machine parts
    • 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
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2050/00—Applications
    • F01P2050/30—Circuit boards

Definitions

  • the invention relates to a motorization system used for example for a motor vehicle.
  • the invention also relates to an electromagnetic valve actuator.
  • the most common motorization systems generally comprise an internal combustion engine comprising an engine block delimiting combustion chambers having one end closed by a cylinder head and an opposite end closed by a piston slidably received in the engine block.
  • the pistons are connected by a connecting rod to a crankshaft arranged to convert the reciprocating sliding movement of the pistons into a continuous rotational movement communicated to the driving wheels of the vehicle via the clutch and the gearbox.
  • the cylinder head includes connecting pipes of the combustion chambers to an air supply circuit and a exhaust gas exhaust system.
  • these connecting means comprise valves movable between a closed position of the ducts and an open position of the ducts.
  • radiators or fans active or passive dissipators
  • the radiators are bulky and heavy. Fans, even small ones, also increase the area and volume occupied by the electronic circuit.
  • the invention proposes to remedy at least in part these disadvantages.
  • the invention relates to a motorization system comprising an internal combustion engine associated with at least one electromagnetic actuator controlled by an electronic circuit, the system comprising a thermal connection means connecting the electronic circuit to the motor in such a way.
  • the engine constitutes a cooling radiator of the circuit.
  • the calories generated by the electronic circuit are evacuated to the engine which thus acts as a radiator.
  • the applicant has found that, contrary to what one might think, it turns out that the engine is hotter than the electronic circuit in operation.
  • the motor given its mass, its external surface and cooling means which are usually attached thereto will therefore be an effective means of dissipating the calories produced during the operation of the electronic circuit.
  • the drive system comprises an actuator cooling circuit connected to a cooling circuit of the engine.
  • the electronic circuit of the actuators is connected thermally to the engine by a cooling circuit. This makes it possible to use the motor as a radiator for the electronic components, the cooling circuit making it possible to transfer the calories produced to the motor in a particularly efficient manner.
  • the cooling circuit of the actuators is connected to the engine cooling circuit to benefit from the efficiency of the latter.
  • the invention also relates to an electromagnetic valve actuator, comprising a housing having at least one support plate on a motor on which 1 actuator is intended to be fixed.
  • the actuator comprises at least one face on which is fixed an electronic circuit and thermal conduction means between said face and the soleplate.
  • FIG. 1 is a view of a motorization system according to the invention
  • FIG. 2 is a view of an actuator, shown in FIG. 1 without its cowling according to the invention
  • FIG. 1 illustrates a motorization system comprising a four-stroke internal combustion thermal engine.
  • the engine 1 is formed of an engine block (not shown) and a cylinder head 2 mounted on the engine block and covered with a cylinder head cover 5 delimiting with the cylinder head 4 a housing for a group of valve actuators 3 .
  • the actuators 3 are fixed to the yoke 4 and rest on it each by a sole 4.
  • the cylinder head cover 5 is here shown transparent to give a glimpse of the actuators 3.
  • the general structure and operation of such a heat engine are known in themselves and will not be more detailed here.
  • Valve actuators 3 allow 1 'actuation of the intake and exhaust valves to replace a camshaft. It is thus possible to control each valve individually and to achieve complex and optimized combustion cycles.
  • the actuators are made as autonomous units. They comprise in addition to the valve displacement members, an integrated electronic circuit controlling and powering the valve displacement members.
  • FIG. 2 more particularly illustrates one of the actuators seen in FIG.
  • the actuator comprises a housing 9, metal, enclosing the displacement members of the valves. Further, on a lower face 10 of the casing there is a valve 11 which protrudes from the casing 9 and which is intended to be inserted into the cylinder head 2.
  • the actuator 3 also comprises a connection socket 8 arranged on the front panel and which allows to connect the actuator 3 to a power source and an engine management unit or ECU (Engine Control Unit).
  • an electronic circuit 14 comprising a support 15, split into a first support portion 17 and a second support portion 18, and electronic components distributed on each support portion.
  • the support portions are each fixed on one face of the casing 9, here the front faces 20 and upper 21.
  • the electronic circuit 14 thus comprises two parts which are electrically connected to each other by metal connectors.
  • Each part of the electronic circuit 14 is fixed on the casing 9 and each part is thermally connected to the casing 9 so that the calories produced by the electronic components are transmitted to the casing 9.
  • the first support portion 17 is disposed on the upper face 21 of the housing and comprises a metal tab 22 thermally connecting the components fixed on the first support portion 17 to the housing 9.
  • the support can thus be made of a non-thermally conductive material.
  • the second support portion 18 is disposed on the front face 20 of the housing 9, in direct contact with the housing. It is made of metal so that the calories produced by the electronic components fixed on this second support portion 18 are diffused to the support portion and then to the housing.
  • the lower face 10 of the actuator housing forms a sole and is fixed directly on the cylinder head 2.
  • the contact between the metal housing 9 and the cylinder head 2 allows the calories released by the electronic circuit 14 to be transferred to the cylinder head 2 via the metal casing 9.
  • the casing 9 is preferably made of a good thermal conductor metal material such as steel or aluminum so that thermal conduction is provided between the faces 19 and 20 on the one hand and the lower face 10 on the other hand .
  • thermal connection between the electronic circuit 14 and the motor 1 can be achieved by other means.
  • the means may comprise a thermal conductor, preferably metal, which extends between the electronic circuit and the motor.
  • This conductor may take the form of a copper tab fixed at one end to the electronic circuit 14 and at another second end to the motor 1.
  • the thermal connection between the electronic circuit 14 and the motor 1 can be provided by a support portion.
  • the support portion is then arranged to be fixed on the one hand on the casing 9 of the actuator 3 and on the other hand on the engine 1. More simply, the portion support is a connecting piece between the housing 9 and the motor 1, said part being made of a thermally conductive material. The calories produced by the electronic components of the circuit 14 are then transmitted to the support portion and then directly to the engine 1.
  • This arrangement of the electronic circuit is particularly advantageous because it does not require any additional thermal bonding part and allows the use of a housing made of a non-metallic material, for example plastic.
  • the thermal connection between the electronic circuit and the motor can also be performed by a cooling circuit.
  • the engine 1, and in particular the engine block, comprises a cooling circuit in which circulates a coolant.
  • This cooling circuit makes it possible to evacuate the calories produced by the engine 1 towards a radiator of the engine system disposed for example behind the radiator grille of the vehicle equipped with the engine system.
  • the engine cooling circuit comprises an actuator cooling circuit arranged so that the calories produced by the electronic circuits of the actuators are transmitted to the engine.
  • the cooling circuit of the actuators is disposed in the cylinder head cover 5 and is connected to the engine cooling circuit.
  • the cylinder head cover 5 further comprises means for thermal connection of the electronic circuits 14 of the actuators 3 with the cooling circuit of the actuators.
  • These thermal connection means may comprise metal tongues, heat pipes or an arrangement of the supports of the electronic circuits so that the electronic circuits are in direct contact with the cooling circuit. actuators or with the cylinder head cover 2.
  • the electronic circuit 14 it is also possible to fix the electronic circuit directly on the motor 1 provided that the support of the electronic circuit 14 ensures thermal conduction of the circuit to the motor 1, or directly on the cylinder head or the motor. breech cover.
  • the electromagnetic actuator 3 of the present example is an actuator directly controlling the movement of the valve
  • the invention also applies to an electromagnetic actuator cylinder deactivation adapted to temporarily cut the link between the cam and the valve.

Abstract

The invention relates to a drive system comprising an internal combustion engine associated with at least one electromagnetic actuator controlled by an electronic circuit, said system including a thermal linking means connecting the electronic circuit to the engine, such that the engine forms a circuit cooling radiator. The invention also relates to an electromagnetic actuator that can be used in said system.

Description

Système de motorisation et actionneur  Actuator system and actuator
électromagnétique à refroidissement amélioré  electromagnetic with improved cooling
L'invention concerne un système de motorisation utilisable par exemple pour un véhicule automobile. L'invention a également pour objet un actionneur électromagnétique de soupape. The invention relates to a motorization system used for example for a motor vehicle. The invention also relates to an electromagnetic valve actuator.
ARRIERE-PLAN DE L'INVENTION  BACKGROUND OF THE INVENTION
Les systèmes de motorisation les plus répandus comprennent généralement un moteur thermique à combustion interne comportant un bloc moteur délimitant des chambres de combustion ayant une extrémité fermée par une culasse et une extrémité opposée fermée par un piston reçu à coulissement dans le bloc moteur. Les pistons sont reliés par une bielle à un vilebrequin agencé pour transformer le mouvement de coulissement alternatif des pistons en un mouvement de rotation continu communiqué aux roues motrices du véhicule via l'embrayage et la boite de vitesses. La culasse comprend des conduits de raccordement des chambres de combustion à un circuit d'alimentation en air et à un circuit d'échappement des gaz brûlés. Dans les moteurs thermiques à quatre temps, ces moyens de raccordement comprennent des soupapes mobiles entre une position d'obturation des conduits et une position d'ouverture des conduits .  The most common motorization systems generally comprise an internal combustion engine comprising an engine block delimiting combustion chambers having one end closed by a cylinder head and an opposite end closed by a piston slidably received in the engine block. The pistons are connected by a connecting rod to a crankshaft arranged to convert the reciprocating sliding movement of the pistons into a continuous rotational movement communicated to the driving wheels of the vehicle via the clutch and the gearbox. The cylinder head includes connecting pipes of the combustion chambers to an air supply circuit and a exhaust gas exhaust system. In four-stroke thermal engines, these connecting means comprise valves movable between a closed position of the ducts and an open position of the ducts.
Dans le domaine automobile, les moteurs intègrent de nombreux composants électroniques. En effet, afin d'optimiser le rendement du moteur, les organes mécaniques d' actionnement des soupapes sont fréquemment associés ou même remplacés par des actionneurs électromagnétiques contrôlés par un circuit électronique. Ces circuits électroniques sont implantés au plus près des actionneurs. Or l'environnement proche du moteur constitue un milieu agressif pour les composants électroniques, accentué par la température élevée et la présence d'un brouillard d'huile. Il est donc nécessaire de protéger et de refroidir les circuits électroniques. In the automotive field, engines incorporate many electronic components. Indeed, in order to optimize the efficiency of the engine, the mechanical actuators of the valves are frequently associated or even replaced by electromagnetic actuators controlled by an electronic circuit. These electronic circuits are located closer to the actuators. However, the environment close to the engine constitutes an aggressive environment for the electronic components, accentuated by the high temperature and the presence of an oil mist. It is therefore necessary to protect and cool the electronic circuits.
Ainsi, il est connu d'ajouter au circuit électronique des dissipateurs actifs ou passifs comme des radiateurs ou des ventilateurs. Toutefois, les radiateurs sont encombrants et lourds. Les ventilateurs, même de petite taille, augmentent également la surface et le volume occupés par le circuit électronique.  Thus, it is known to add to the electronic circuit active or passive dissipators such as radiators or fans. However, the radiators are bulky and heavy. Fans, even small ones, also increase the area and volume occupied by the electronic circuit.
Toutes ces solutions impliquent une augmentation du volume occupé par le circuit électronique ainsi que des coûts et une complexité de mise en œuvre élevés.  All of these solutions involve an increase in the volume occupied by the electronic circuit as well as high costs and complexity of implementation.
L' invention propose de remédier au moins en partie à ces inconvénients.  The invention proposes to remedy at least in part these disadvantages.
BREVE DESCRIPTION DE L'INVENTION L'invention concerne un système de motorisation comportant un moteur à combustion interne associé à au moins un actionneur électromagnétique commandé par un circuit électronique, le système comprenant un moyen de liaison thermique reliant le circuit électronique au moteur de telle manière que le moteur constitue un radiateur de refroidissement du circuit.  BRIEF DESCRIPTION OF THE INVENTION The invention relates to a motorization system comprising an internal combustion engine associated with at least one electromagnetic actuator controlled by an electronic circuit, the system comprising a thermal connection means connecting the electronic circuit to the motor in such a way. the engine constitutes a cooling radiator of the circuit.
Ainsi, les calories dégagées par le circuit électronique sont évacuées vers le moteur qui joue ainsi le rôle de radiateur. En effet, le demandeur s'est aperçu que, contrairement à ce qu'on pourrait penser, il s'avère que le moteur est moins chaud que le circuit électronique en fonctionnement. Le moteur, compte tenu de sa masse, de sa surface externe et des moyens de refroidissement qui lui sont d' ordinaire attachés va dès lors constituer un moyen efficace de dissipation des calories produites lors du fonctionnement du circuit électronique.  Thus, the calories generated by the electronic circuit are evacuated to the engine which thus acts as a radiator. Indeed, the applicant has found that, contrary to what one might think, it turns out that the engine is hotter than the electronic circuit in operation. The motor, given its mass, its external surface and cooling means which are usually attached thereto will therefore be an effective means of dissipating the calories produced during the operation of the electronic circuit.
Avantageusement, le système de motorisation comporte un circuit de refroidissement des actionneurs relié à un circuit de refroidissement du moteur.  Advantageously, the drive system comprises an actuator cooling circuit connected to a cooling circuit of the engine.
Le circuit électronique des actionneurs est relié thermiquement au moteur par un circuit de refroidissement. Cela permet d'utiliser le moteur comme radiateur pour les composants électroniques, le circuit de refroidissement permettant de transférer de manière particulièrement efficace les calories produites vers le moteur. De plus, le circuit de refroidissement des actionneurs est relié au circuit de refroidissement du moteur afin de bénéficier de l'efficacité de ce dernier. The electronic circuit of the actuators is connected thermally to the engine by a cooling circuit. This makes it possible to use the motor as a radiator for the electronic components, the cooling circuit making it possible to transfer the calories produced to the motor in a particularly efficient manner. In addition, the cooling circuit of the actuators is connected to the engine cooling circuit to benefit from the efficiency of the latter.
L'invention a également pour objet un actionneur électromagnétique de soupape, comportant un carter ayant au moins une semelle d'appui sur un moteur sur lequel 1' actionneur est destiné à être fixé. L' actionneur comporte au moins une face sur laquelle est fixé un circuit électronique et des moyens de conduction thermique entre ladite face et la semelle.  The invention also relates to an electromagnetic valve actuator, comprising a housing having at least one support plate on a motor on which 1 actuator is intended to be fixed. The actuator comprises at least one face on which is fixed an electronic circuit and thermal conduction means between said face and the soleplate.
BREVE DESCRIPTION DES DESSINS  BRIEF DESCRIPTION OF THE DRAWINGS
Il sera fait référence aux dessins annexés, parmi lesquels :  Reference will be made to the appended drawings, among which:
la figure 1 est une vue d'un système de motorisation selon l'invention,  FIG. 1 is a view of a motorization system according to the invention,
- la figure 2 est une vue d'un actionneur, représenté en figure 1 sans son capotage selon l'invention  FIG. 2 is a view of an actuator, shown in FIG. 1 without its cowling according to the invention
DESCRIPTION DETAILLEE DE L'INVENTION La figure 1 illustre un système de motorisation comprenant un moteur 1 thermique à combustion interne à quatre temps. Le moteur 1 est formé d'un bloc moteur (non représenté) et d'une culasse 2 montée sur le bloc moteur et recouverte d'un capot de culasse 5 délimitant avec la culasse 4 un logement pour un groupe d' actionneurs 3 de soupapes. Les actionneurs 3 sont fixés à la culasse 4 et reposent sur celle-ci chacun par une semelle 4. Le capot de culasse 5 est ici représenté transparent pour laisser entrevoir les actionneurs 3. La structure générale et le fonctionnement d'un tel moteur thermique sont connus en eux-mêmes et ne seront pas plus détaillés ici.  DETAILED DESCRIPTION OF THE INVENTION FIG. 1 illustrates a motorization system comprising a four-stroke internal combustion thermal engine. The engine 1 is formed of an engine block (not shown) and a cylinder head 2 mounted on the engine block and covered with a cylinder head cover 5 delimiting with the cylinder head 4 a housing for a group of valve actuators 3 . The actuators 3 are fixed to the yoke 4 and rest on it each by a sole 4. The cylinder head cover 5 is here shown transparent to give a glimpse of the actuators 3. The general structure and operation of such a heat engine are known in themselves and will not be more detailed here.
Les actionneurs 3 de soupapes permettent 1 ' actionnement des soupapes d'admission et d'échappement en remplacement d'un arbre à cames. Il est ainsi possible de commander chaque soupape individuellement et de réaliser des cycles de combustion complexes et optimisés. Les actionneurs sont réalisés comme des organes autonomes. Ils comportent outre les organes de déplacement des soupapes, un circuit électronique intégré commandant et alimentant en puissance les organes de déplacement des soupapes. Valve actuators 3 allow 1 'actuation of the intake and exhaust valves to replace a camshaft. It is thus possible to control each valve individually and to achieve complex and optimized combustion cycles. The actuators are made as autonomous units. They comprise in addition to the valve displacement members, an integrated electronic circuit controlling and powering the valve displacement members.
La figure 2 illustre plus particulièrement un des actionneurs vus sur la figure 1.  FIG. 2 more particularly illustrates one of the actuators seen in FIG.
Dans cet exemple de réalisation, l'actionneur comporte un carter 9, métallique, renfermant les organes de déplacement des soupapes. On distingue en outre sur une face inférieure 10 du carter une soupape 11 qui dépasse du carter 9 et qui est destinée à être insérée dans la culasse 2. L'actionneur 3 comporte également une prise 8 de connexion disposé sur la face avant et qui permet de relier l'actionneur 3 à une source de puissance et à une unité de gestion du moteur ou ECU (de l'anglais « Engine Control Unit ») .  In this embodiment, the actuator comprises a housing 9, metal, enclosing the displacement members of the valves. Further, on a lower face 10 of the casing there is a valve 11 which protrudes from the casing 9 and which is intended to be inserted into the cylinder head 2. The actuator 3 also comprises a connection socket 8 arranged on the front panel and which allows to connect the actuator 3 to a power source and an engine management unit or ECU (Engine Control Unit).
Sur ce carter 9 est fixé un circuit électronique 14 comprenant un support 15, scindé en une première portion de support 17 et une seconde portion de support 18, et des composants électroniques répartis sur chaque portion de support. Les portions de support sont chacune fixées sur une face du carter 9, ici les faces avant 20 et supérieure 21. Le circuit électronique 14 comprend ainsi deux parties qui sont reliées électriquement entre elles par des connecteurs métalliques.  On this housing 9 is fixed an electronic circuit 14 comprising a support 15, split into a first support portion 17 and a second support portion 18, and electronic components distributed on each support portion. The support portions are each fixed on one face of the casing 9, here the front faces 20 and upper 21. The electronic circuit 14 thus comprises two parts which are electrically connected to each other by metal connectors.
Chaque partie du circuit électronique 14 est fixée sur le carter 9 et chaque partie est reliée thermiquement au carter 9 de sorte que les calories produites par les composants électroniques sont transmises au carter 9.  Each part of the electronic circuit 14 is fixed on the casing 9 and each part is thermally connected to the casing 9 so that the calories produced by the electronic components are transmitted to the casing 9.
Ainsi, la première portion de support 17 est disposée sur la face supérieure 21 du carter et comporte une patte métallique 22 reliant thermiquement les composants fixés sur cette première portion 17 de support au carter 9. Le support peut ainsi être réalisé dans un matériau non conducteur thermiquement. Thus, the first support portion 17 is disposed on the upper face 21 of the housing and comprises a metal tab 22 thermally connecting the components fixed on the first support portion 17 to the housing 9. The support can thus be made of a non-thermally conductive material.
La deuxième portion de support 18 est disposée sur la face avant 20 du carter 9, en contact direct avec le carter. Elle est réalisée en métal de sorte que les calories produites par les composants électroniques fixés sur cette deuxième portion 18 de support sont diffusées à la portion de support puis au carter.  The second support portion 18 is disposed on the front face 20 of the housing 9, in direct contact with the housing. It is made of metal so that the calories produced by the electronic components fixed on this second support portion 18 are diffused to the support portion and then to the housing.
En référence maintenant à la figure 1, la face inférieure 10 du carter de l'actionneur forme une semelle et est fixée directement sur la culasse 2. Le contact entre le carter métallique 9 et la culasse 2 permet aux calories dégagées par le circuit électronique 14 d'être transférées à la culasse 2 par l'intermédiaire du carter métallique 9.  Referring now to Figure 1, the lower face 10 of the actuator housing forms a sole and is fixed directly on the cylinder head 2. The contact between the metal housing 9 and the cylinder head 2 allows the calories released by the electronic circuit 14 to be transferred to the cylinder head 2 via the metal casing 9.
Le carter 9 est de préférence réalisé dans un matériau métallique bon conducteur thermique comme l'acier ou l'aluminium de sorte qu'une conduction thermique est assurée entre les faces 19 et 20 d'une part et la face inférieure 10 d'autre part.  The casing 9 is preferably made of a good thermal conductor metal material such as steel or aluminum so that thermal conduction is provided between the faces 19 and 20 on the one hand and the lower face 10 on the other hand .
Bien entendu, la liaison thermique entre le circuit électronique 14 et le moteur 1 peut être réalisée par d'autres moyens.  Of course, the thermal connection between the electronic circuit 14 and the motor 1 can be achieved by other means.
En particulier, les moyens peuvent comprendre un conducteur thermique, de préférence métallique, qui s'étend entre le circuit électronique et le moteur. Ce conducteur peut prendre la forme d'une languette de cuivre fixée par une première extrémité au circuit électronique 14 et par une autre deuxième extrémité au moteur 1.  In particular, the means may comprise a thermal conductor, preferably metal, which extends between the electronic circuit and the motor. This conductor may take the form of a copper tab fixed at one end to the electronic circuit 14 and at another second end to the motor 1.
La liaison thermique entre le circuit électronique 14 et le moteur 1 peut être assurée par une portion de support. La portion de support est alors agencée pour être fixée d'une part sur le carter 9 de l'actionneur 3 et d'autre part sur le moteur 1. Plus simplement, la portion de support est une pièce de liaison entre le carter 9 et le moteur 1, ladite pièce étant en un matériau thermiquement conducteur. Les calories produites par les composants électroniques du circuit 14 sont alors transmises à la portion de support puis directement au moteur 1. The thermal connection between the electronic circuit 14 and the motor 1 can be provided by a support portion. The support portion is then arranged to be fixed on the one hand on the casing 9 of the actuator 3 and on the other hand on the engine 1. More simply, the portion support is a connecting piece between the housing 9 and the motor 1, said part being made of a thermally conductive material. The calories produced by the electronic components of the circuit 14 are then transmitted to the support portion and then directly to the engine 1.
Cette disposition du circuit électronique est particulièrement avantageuse, car elle ne requiert aucune pièce de liaison thermique supplémentaire et permet d'utiliser un carter réalisé dans un matériau non métallique, par exemple en plastique.  This arrangement of the electronic circuit is particularly advantageous because it does not require any additional thermal bonding part and allows the use of a housing made of a non-metallic material, for example plastic.
La liaison thermique entre le circuit électronique et le moteur peut en outre être réalisée par un circuit de refroidissement .  The thermal connection between the electronic circuit and the motor can also be performed by a cooling circuit.
Le moteur 1, et en particulier le bloc moteur, comporte un circuit de refroidissement dans lequel circule un fluide caloporteur. Ce circuit de refroidissement permet d'évacuer les calories produites par le moteur 1 vers un radiateur du système de motorisation disposé par exemple derrière la calandre du véhicule qu'équipe le système de motorisation.  The engine 1, and in particular the engine block, comprises a cooling circuit in which circulates a coolant. This cooling circuit makes it possible to evacuate the calories produced by the engine 1 towards a radiator of the engine system disposed for example behind the radiator grille of the vehicle equipped with the engine system.
Selon un aspect de l'invention, le circuit de refroidissement du moteur comporte un circuit de refroidissement des actionneurs agencé pour que les calories produites par les circuits électroniques des actionneurs soient transmises au moteur. Avantageusement, le circuit de refroidissement des actionneurs est disposé dans le capot de culasse 5 et est relié au circuit de refroidissement du moteur. Le capot de culasse 5 comporte en outre des moyens de liaison thermique des circuits électroniques 14 des actionneurs 3 avec le circuit de refroidissement des actionneurs. Ces moyens de liaison thermique peuvent comporter des languettes métalliques, des caloducs ou un agencement des supports des circuits électroniques de sorte que les circuits électroniques soient en contact direct avec le circuit de refroidissement des actionneurs ou avec le capot de culasse 2. According to one aspect of the invention, the engine cooling circuit comprises an actuator cooling circuit arranged so that the calories produced by the electronic circuits of the actuators are transmitted to the engine. Advantageously, the cooling circuit of the actuators is disposed in the cylinder head cover 5 and is connected to the engine cooling circuit. The cylinder head cover 5 further comprises means for thermal connection of the electronic circuits 14 of the actuators 3 with the cooling circuit of the actuators. These thermal connection means may comprise metal tongues, heat pipes or an arrangement of the supports of the electronic circuits so that the electronic circuits are in direct contact with the cooling circuit. actuators or with the cylinder head cover 2.
Pour simplifier l'implantation du circuit électronique 14, il est également possible de fixer le circuit électronique directement sur le moteur 1 pourvu que le support du circuit électronique 14 assure une conduction thermique du circuit vers le moteur 1, ou directement sur la culasse ou le capot de culasse.  To simplify the implementation of the electronic circuit 14, it is also possible to fix the electronic circuit directly on the motor 1 provided that the support of the electronic circuit 14 ensures thermal conduction of the circuit to the motor 1, or directly on the cylinder head or the motor. breech cover.
Bien que l' actionneur électromagnétique 3 du présent exemple soit un actionneur commandant directement le mouvement de la soupape, l'invention s'applique également à un actionneur électromagnétique de désactivation de cylindre adapté à couper temporairement le lien entre la came et la soupape.  Although the electromagnetic actuator 3 of the present example is an actuator directly controlling the movement of the valve, the invention also applies to an electromagnetic actuator cylinder deactivation adapted to temporarily cut the link between the cam and the valve.

Claims

REVENDICATIONS
1. Système de motorisation comportant un moteur (1) à combustion interne associé à au moins un actionneur (3) électromagnétique commandé par un circuit électronique (14), caractérisé en ce que le système comprend un moyen de liaison thermique (22, 15, 9) reliant le circuit électronique (14) au moteur (1) de telle manière que le moteur (1) constitue un radiateur de refroidissement du circuit (14), le moyen de liaison thermique comportant un carter (9) de l'actionneur (3). Motorization system comprising an internal combustion engine (1) associated with at least one electromagnetic actuator (3) controlled by an electronic circuit (14), characterized in that the system comprises a thermal connection means (22, 15, 9) connecting the electronic circuit (14) to the motor (1) in such a way that the motor (1) constitutes a cooling radiator of the circuit (14), the thermal connection means comprising a housing (9) of the actuator ( 3).
2. Système de motorisation selon la revendication 1, dans lequel le moteur (1) comporte un bloc moteur auquel le circuit électronique (14) est relié thermiquement .  2. Motorization system according to claim 1, wherein the motor (1) comprises a motor unit to which the electronic circuit (14) is thermally connected.
3. Système de motorisation selon la revendication 1, dans lequel le moteur comporte une culasse (2) à laquelle le circuit électronique (14) est relié thermiquement .  3. Drive system according to claim 1, wherein the engine comprises a yoke (2) to which the electronic circuit (14) is thermally connected.
4. Système de motorisation selon la revendication 1, comportant un capot de culasse (5) auquel le circuit électronique (14) est relié thermiquement.  4. Motorization system according to claim 1, comprising a cylinder head cover (5) to which the electronic circuit (14) is thermally connected.
5. Système de motorisation selon l'une des revendications 1 à 4, comportant un circuit de refroidissement des actionneurs relié à un circuit de refroidissement du moteur.  5. Motorization system according to one of claims 1 to 4, comprising a cooling circuit of the actuators connected to a cooling circuit of the engine.
6. Système de motorisation selon la revendication 5, dans lequel le moteur comprend une culasse recouverte par un capot de culasse définissant avec la culasse un logement pour les actionneurs et le circuit de refroidissement des actionneurs est connecté audit logement .  6. Motorization system according to claim 5, wherein the engine comprises a yoke covered by a cylinder head cover defining with the cylinder head a housing for the actuators and the cooling circuit of the actuators is connected to said housing.
7. Système de motorisation selon la revendication 1, dans lequel le circuit électronique (14) est disposé sur l'actionneur (3) qu'il commande, l'actionneur (3) comportant en outre des moyens de conduction thermique du circuit électronique au moteur (22, 15, 9) . 7. Motorization system according to claim 1, wherein the electronic circuit (14) is arranged on the actuator (3) which it controls, the actuator (3) further comprising thermal conduction means of the electronic circuit to the motor (22, 15, 9).
8. Système de motorisation selon l'une des revendications 1 à 6, dans lequel l'actionneur (3) comporte un boîtier (9) métallique sur lequel est fixé le circuit électronique (14) et qui est agencé pour relier thermiquement le circuit électronique (14) au moteur (1) .  8. Motorization system according to one of claims 1 to 6, wherein the actuator (3) comprises a housing (9) on which metal is fixed the electronic circuit (14) and which is arranged to thermally connect the electronic circuit (14) to the engine (1).
9. Système de motorisation selon l'une des revendications 1 à 7, dans lequel l'actionneur (3) est un actionneur de soupape.  9. Drive system according to one of claims 1 to 7, wherein the actuator (3) is a valve actuator.
10. Actionneur électromagnétique de soupape (3), comportant un carter (9) ayant au moins une semelle d'appui (4) sur un moteur sur lequel l'actionneur (3) est destiné à être fixé, caractérisé en ce que la semelle permet la conduction thermique entre le carter et le moteur et en ce que l'actionneur (3) comporte au moins une face sur laquelle est fixé un circuit électronique (14) et des moyens de conduction thermique entre ladite face et la semelle (4) .  An electromagnetic valve actuator (3), comprising a housing (9) having at least one support plate (4) on a motor on which the actuator (3) is intended to be fixed, characterized in that the sole allows thermal conduction between the housing and the motor and in that the actuator (3) comprises at least one face on which is fixed an electronic circuit (14) and thermal conduction means between said face and the sole (4) .
11. Actionneur selon la revendication 10 dans lequel le carter (9) est métallique.  11. An actuator according to claim 10 wherein the housing (9) is metallic.
12. Actionneur selon l'une des revendications 10 ou 11 dans lequel le circuit électronique comporte un support (15) conducteur thermique fixé sur le carter (9) .  12. An actuator according to one of claims 10 or 11 wherein the electronic circuit comprises a support (15) thermal conductor fixed on the housing (9).
PCT/FR2011/052790 2010-12-22 2011-11-28 Drive system and electromagnetic actuator with improved cooling WO2012085377A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP11801778.9A EP2655824B1 (en) 2010-12-22 2011-11-28 Drive system and electromagnetic actuator with improved cooling
JP2013545460A JP2014500440A (en) 2010-12-22 2011-11-28 Drive system with improved cooling function and electromagnetic actuator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1061102A FR2969698B1 (en) 2010-12-22 2010-12-22 MOTORIZATION SYSTEM AND ELECTROMAGNETIC ACTUATOR WITH IMPROVED COOLING.
FR1061102 2010-12-22

Publications (1)

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WO2012085377A1 true WO2012085377A1 (en) 2012-06-28

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PCT/FR2011/052790 WO2012085377A1 (en) 2010-12-22 2011-11-28 Drive system and electromagnetic actuator with improved cooling

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EP (1) EP2655824B1 (en)
JP (1) JP2014500440A (en)
FR (1) FR2969698B1 (en)
WO (1) WO2012085377A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19511880A1 (en) * 1994-04-08 1995-10-12 Audi Ag Operating device for gas substitution valves on reciprocating engines
DE19814679A1 (en) * 1997-04-02 1998-11-12 Toyota Motor Co Ltd Cylinder head structure for internal combustion engine
WO2001025599A1 (en) * 1999-10-07 2001-04-12 Heinz Leiber Electromagnetic or electrohydraulic valve control device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19511880A1 (en) * 1994-04-08 1995-10-12 Audi Ag Operating device for gas substitution valves on reciprocating engines
DE19814679A1 (en) * 1997-04-02 1998-11-12 Toyota Motor Co Ltd Cylinder head structure for internal combustion engine
WO2001025599A1 (en) * 1999-10-07 2001-04-12 Heinz Leiber Electromagnetic or electrohydraulic valve control device

Also Published As

Publication number Publication date
EP2655824B1 (en) 2014-12-17
EP2655824A1 (en) 2013-10-30
FR2969698A1 (en) 2012-06-29
JP2014500440A (en) 2014-01-09
FR2969698B1 (en) 2015-08-21

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