EP2655824B1 - Antriebssystem und elektromagnetisches stellglied mit verbesserter kühlung - Google Patents

Antriebssystem und elektromagnetisches stellglied mit verbesserter kühlung Download PDF

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Publication number
EP2655824B1
EP2655824B1 EP11801778.9A EP11801778A EP2655824B1 EP 2655824 B1 EP2655824 B1 EP 2655824B1 EP 11801778 A EP11801778 A EP 11801778A EP 2655824 B1 EP2655824 B1 EP 2655824B1
Authority
EP
European Patent Office
Prior art keywords
engine
actuator
electronic circuit
drive system
housing
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.)
Not-in-force
Application number
EP11801778.9A
Other languages
English (en)
French (fr)
Other versions
EP2655824A1 (de
Inventor
François Machet
Dominique Dupuis
Emmanuel Talon
Danilo Falchi
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 Electrification 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
Publication of EP2655824A1 publication Critical patent/EP2655824A1/de
Application granted granted Critical
Publication of EP2655824B1 publication Critical patent/EP2655824B1/de
Not-in-force 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
    • 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 that the motor constitutes a radiator. cooling 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 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 casing having at least one baseplate on a motor on which the 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 sole.
  • the figure 1 illustrates a motorization system comprising a four-stroke internal combustion thermal engine 1.
  • 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 defining 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 the 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.
  • the figure 2 illustrates more particularly one of the actuators seen on the figure 1 .
  • 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 case 9 and the cylinder head 2 allows the heat generated by the electronic circuit 14 to be transferred to the cylinder head 2 through the metal housing 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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Valve Device For Special Equipments (AREA)

Claims (12)

  1. Antriebssystem, das einen Verbrennungsmotor (1) aufweist, der mindestens einem elektromagnetischen Stellglied (3) zugeordnet ist, das durch eine elektronische Schaltung (14) gesteuert wird, dadurch gekennzeichnet, dass das System ein thermisches Verbindungsmittel (22, 15, 9) aufweist, das die elektronische Schaltung (14) mit dem Motor (1) derart verbindet, dass der Motor (1) einen Kühlradiator der Schaltung (14) darstellt, wobei das thermische Verbindungsmittel ein Gehäuse (9) des Stellglieds (3) aufweist.
  2. Antriebssystem nach Anspruch 1, wobei der Motor (1) einen Motorblock aufweist, mit dem die elektronische Schaltung (14) thermisch verbunden ist.
  3. Antriebssystem nach Anspruch 1, wobei der Motor einen Zylinderkopf (2) aufweist, mit dem die elektronische Schaltung (14) thermisch verbunden ist.
  4. Antriebssystem nach Anspruch 1, welches eine Zylinderkopfhaube (5) aufweist, mit der die elektronische Schaltung (14) thermisch verbunden ist.
  5. Antriebssystem nach einem der Ansprüche 1 bis 4, welches einen Kühlkreislauf der Stellglieder aufweist, der mit einem Kühlkreislauf des Motors verbunden ist.
  6. Antriebssystem nach Anspruch 5, wobei der Motor einen Zylinderkopf aufweist, der von einer Zylinderkopfhaube bedeckt ist, die mit dem Zylinderkopf einen Sitz für die Stellglieder definiert, und der Kühlkreislauf der Stellglieder mit diesem Sitz verbunden ist.
  7. Antriebssystem nach Anspruch 1, wobei die elektronische Schaltung (14) an dem Stellglied (3) angeordnet ist, welches sie steuert, wobei das Stellglied (3) außerdem Wärmeleitmittel von der elektronischen Schaltung zu dem Motor (22, 15, 9) aufweist.
  8. Antriebssystem nach einem der Ansprüche 1 bis 6, wobei das Stellglied (3) ein metallisches Gehäuse (9) aufweist, an welchem die elektronische Schaltung (14) befestigt ist und welches dazu eingerichtet ist, die elektronische Schaltung (14) mit dem Motor (1) thermisch zu verbinden.
  9. Antriebssystem nach einem der Ansprüche 1 bis 7, wobei das Stellglied (3) ein Ventilstellglied ist.
  10. Elektromagnetisches Ventilstellglied (3), welches ein Gehäuse (9) aufweist, das mindestens einen Stützfuß (4) auf einem Motor aufweist, auf welchem das Stellglied (3) befestigt werden soll, dadurch gekennzeichnet, dass der Fuß die Wärmeleitung zwischen dem Gehäuse und dem Motor ermöglicht, und dadurch, dass das Stellglied (3) mindestens eine Seite, auf welcher eine elektronische Schaltung (14) befestigt ist, und Wärmeleitmittel zwischen dieser Seite und dem Fuß (4) aufweist.
  11. Stellglied nach Anspruch 10, wobei das Gehäuse (9) metallisch ist.
  12. Stellglied nach einem der Ansprüche 10 oder 11, wobei die elektronische Schaltung einen wärmeleitenden Träger (15) aufweist, der an dem Gehäuse (9) befestigt ist.
EP11801778.9A 2010-12-22 2011-11-28 Antriebssystem und elektromagnetisches stellglied mit verbesserter kühlung Not-in-force EP2655824B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1061102A FR2969698B1 (fr) 2010-12-22 2010-12-22 Systeme de motorisation et actionneur electromagnetique a refroidissement ameliore.
PCT/FR2011/052790 WO2012085377A1 (fr) 2010-12-22 2011-11-28 Systeme de motorisation et actionneur electromagnetique a refroidissement ameliore

Publications (2)

Publication Number Publication Date
EP2655824A1 EP2655824A1 (de) 2013-10-30
EP2655824B1 true EP2655824B1 (de) 2014-12-17

Family

ID=44455224

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11801778.9A Not-in-force EP2655824B1 (de) 2010-12-22 2011-11-28 Antriebssystem und elektromagnetisches stellglied mit verbesserter kühlung

Country Status (4)

Country Link
EP (1) EP2655824B1 (de)
JP (1) JP2014500440A (de)
FR (1) FR2969698B1 (de)
WO (1) WO2012085377A1 (de)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19511880A1 (de) * 1994-04-08 1995-10-12 Audi Ag Vorrichtung zum Betätigen von Gaswechsel-Ventilen
JP3111922B2 (ja) * 1997-04-02 2000-11-27 トヨタ自動車株式会社 電磁弁を備えた内燃機関のシリンダヘッド構造
DE50009028D1 (de) * 1999-10-07 2005-01-27 Heinz Leiber Elektromagnetische oder elektrohydraulische ventilsteueranordnung

Also Published As

Publication number Publication date
JP2014500440A (ja) 2014-01-09
FR2969698B1 (fr) 2015-08-21
WO2012085377A1 (fr) 2012-06-28
EP2655824A1 (de) 2013-10-30
FR2969698A1 (fr) 2012-06-29

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