WO2015162380A1 - Fluid flow valve - Google Patents

Fluid flow valve Download PDF

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Publication number
WO2015162380A1
WO2015162380A1 PCT/FR2015/051094 FR2015051094W WO2015162380A1 WO 2015162380 A1 WO2015162380 A1 WO 2015162380A1 FR 2015051094 W FR2015051094 W FR 2015051094W WO 2015162380 A1 WO2015162380 A1 WO 2015162380A1
Authority
WO
WIPO (PCT)
Prior art keywords
spring
valve
actuator
positioning means
valve according
Prior art date
Application number
PCT/FR2015/051094
Other languages
French (fr)
Inventor
Michael SANCHES
Guillaume Davoult
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 CN201580032961.3A priority Critical patent/CN106460680B/en
Priority to EP15725783.3A priority patent/EP3134630B1/en
Publication of WO2015162380A1 publication Critical patent/WO2015162380A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
    • F02D9/1035—Details of the valve housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
    • F02D9/1065—Mechanical control linkage between an actuator and the flap, e.g. including levers, gears, springs, clutches, limit stops of the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
    • F02D9/107—Manufacturing or mounting details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/52—Systems for actuating EGR valves
    • F02M26/53—Systems for actuating EGR valves using electric actuators, e.g. solenoids
    • F02M26/54—Rotary actuators, e.g. step motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/65—Constructional details of EGR valves
    • F02M26/70—Flap valves; Rotary valves; Sliding valves; Resilient valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/65—Constructional details of EGR valves
    • F02M26/72—Housings

Definitions

  • the present invention relates to the field of fluid circulation valves, and more specifically a fluid circulation valve for a motor vehicle comprising an actuator with return spring.
  • the valve according to the invention is more particularly intended for applications as an intake gas metering valve of internal combustion engines, whether they are gasoline or diesel. It also finds its applications as an exhaust gas recirculation valve or EGR valve (for Exhaust Gas Recirculation according to the English terminology). Other applications of the valve according to the invention are also possible without departing from the scope of the invention.
  • actuators and for example actuators of fluid circulation valves, operating in a reversible kinematics.
  • These actuators or control shafts use as a return element in their equilibrium position a torsion spring connected to a toothed sector or to a gear wheel.
  • This spring comprises a fixed portion, which abuts in a slot or a stud, and a movable portion connected to the toothed sector or the toothed wheel.
  • actuators or control shafts are arranged in a complex environment or restricted space, and for example in the body of a valve of a motor vehicle as described in the application FR2992046.
  • the present invention proposes a fluid circulation valve comprising a body having a fluid passage duct, a shutter shutter of the duct, an actuator of the flap, the actuator being free to rotate and comprising a torsion spring, and a member for rotating the actuator, the valve comprising spring positioning means.
  • the invention thus has the advantage of allowing the spring to be guided to a functional position in which the first end of the spring, and thus the spring, also allows optimum operation of the valve.
  • the positioning means are formed by a ramp for guiding a first end of the spring to its functional position.
  • the ramp is formed by a slide or groove.
  • the positioning means of the first end of the spring are dug in the foundry of the body of the valve.
  • the positioning means of the first end of the spring are adapted to the size of the first end of the spring.
  • the positioning means of the first end of the spring open at a radial stop stop of the first end of the spring.
  • the positioning means of the first end of the spring are arranged all around the spring.
  • the width of the positioning means of the first end of the spring gradually decreases to the radial stop stop.
  • the invention also relates to a motor vehicle comprising a valve according to the invention.
  • FIG. 1 is a view in axial section of an exemplary embodiment of a fluid circulation valve according to the invention
  • FIG. 2 is a perspective view of the actuator of the valve according to the invention
  • FIG. 3 is a view of part of the valve according to the invention.
  • FIG. 4 is a view of the positioning means of the spring of the valve according to the invention.
  • the invention relates to a valve with an actuator comprising means for positioning a spring.
  • the actuator is also called the control shaft.
  • the actuator is a fluid circulation valve actuator, in particular for a motor vehicle. More specifically, the valve is a valve for adjusting the intake gas flow rate of a heat engine, and in particular a metering valve for a diesel engine.
  • the actuator is, for example, metal, especially stainless steel.
  • the valve is a valve well known to those skilled in the art and is for example such as that described in the patent application FR2992046.
  • the valve comprises a body 2 inside which is formed a conduit 3 for circulating the fluid.
  • the body 2 is here intended to be mounted, by means of connections, on an engine intake line so that the portion of the gases flowing in this branch passes through the duct and is directed towards the engine to participate in the engine. combustion.
  • the connections and the intake line have not been shown, being well known in themselves.
  • the actuator 4 free in rotation with, integral with it, a flap 5 for closing the duct 3 according to the angular position of the actuator 4, as illustrated by the arrow 20 rotating around the longitudinal axis A of the actuator 4.
  • the actuator 4 is connected in rotation to the shutter 5 by fasteners 14, here for example a screw-nut system, or others, which allows the shutter to be able to rotate with the tree between two extreme positions.
  • fasteners 14 here for example a screw-nut system, or others, which allows the shutter to be able to rotate with the tree between two extreme positions.
  • One of the fully open positions, as in FIG. 1, lets the fluid pass, and the other, not shown, blocks its passage, the shutter then being applied against the lateral wall of the duct 3.
  • the valve comprises connecting means 6, 7 pivot between said body 2 and the actuator 4.
  • the actuator 4 can thus pivot freely about the axis A, by a sliding adjustment provided between the shaft and the connecting means.
  • the end of the actuator, described as upper 12 opens outwardly of the body 2 of the valve 1 to be connected to a drive member 21 in rotation of said control shaft 4.
  • the driving member 21 is, for example, a toothed sector 22 comprising a central portion 24 centered on the actuator 4 and a radial protuberance 26, forming a corner sector slightly greater than the angular clearance of the flap and provided with gear teeth 28.
  • toothed sector 22 is here rotatably connected to a return wheel 30 free in rotation with respect to the body 2 about an axis of articulation 32 parallel to the longitudinal axis A of the control shaft 4.
  • the valve comprises an electric motor, not shown, in particular a stepping motor.
  • the electric motor meshes with a large pinion 36 of the idler wheel 30 while the toothed sector 22 meshes with a small pinion 37 of the latter.
  • the actuation of the motor thus causes a rotation of the return wheel 30 which in turn causes rotation of the toothed sector 22 and therefore of the flap 5 via the control shaft 4.
  • the drive member 21, the intermediate wheel 30 and / or said motor are positioned in a housing 38 of the valve closed by a cover 40.
  • the valve comprises at least one torsion spring 42 for positioning the flap 5 in a rest position, here an open position. By position of rest, one hears a position taken when the motor of the valve is not actuated.
  • a first end 421 of the spring 42 bears on the body 2, and a second end 422 of the spring bears on the drive member 21, at the level of a slot 46 illustrated in FIG.
  • the spring 42 is centered, in particular, on the longitudinal axis A.
  • the slot 46 thus accommodates the second end 422 of the spring 42, illustrated in FIG. 1.
  • the slot 46 passes axially through the wall 50 of the drive member 21.
  • the slot 46 is oriented, for example, along a corner sector, centered on the longitudinal axis A of the actuator 4.
  • the slot 46 thus defines an attachment position of the spring 42.
  • the first end 421 of the spring 42 is thus supported on the body 2 of the valve.
  • This first end 421 is also called fixed end in opposition to the second end 422 which is driven by the drive member 21. Indeed, this first end 421 of the spring 42 is not rotated by the body member. 21 training.
  • this stop means 423 is a stop, and for example a stud, against which the first end 421 of the spring 42 abuts.
  • this stop means 423 is a slot, not shown, in which the first end 421 of the spring 42 is inserted.
  • the valve according to the invention comprises positioning means 424 of the spring illustrated in FIG. 4.
  • these means 424 make it possible to guide the first end 421 of the spring 42 to its functional position.
  • functional position is meant the position in which the first end 421 of the spring 42, and therefore the spring 42 also, the operation of the valve is optimum.
  • the correct positioning of the spring is important to ensure the correct tare angle and therefore the good restoring torque of the kinematics of the actuator. Incorrect positioning therefore influences the booster torque which is not as effective as it should be.
  • the spring 42 plays its role near the drive member 21 by returning it to its rest position.
  • the positioning means 424 are formed by a ramp dug in the casting of the body 2 of the valve. More specifically, this ramp is formed by a slide or groove.
  • the shape of the ramp 424 is adapted to the size of the first end
  • the ramp 424 and allows the first end 421 of the spring to slide or slide to the stop which will stop it.
  • Ramp 424 guides the spring to the stop.
  • the ramp 424 thus opens at the stop stop.
  • the ramp 424 is arranged all around the spring 42.
  • the width of the ramp 424 gradually decreases to the stop stop.
  • the valve comprises a sensor target 66. It is, for example, a flat magnet described in the application FR2992046.
  • Such a valve is more particularly intended for applications as an intake gas metering valve of internal combustion engines, whether gasoline or diesel. It also finds its applications as an exhaust gas recirculation valve or EGR valve (for Exhaust Gas Recirculation according to the English terminology). Other applications of the valve according to the invention are also possible without departing from the scope of the invention.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Electrically Driven Valve-Operating Means (AREA)
  • Mechanically-Actuated Valves (AREA)
  • Lift Valve (AREA)

Abstract

The invention relates to a fluid flow valve comprising a body having a pipe through which the fluid flows, a flap for sealing the pipe, an actuator of the flap, the actuator being freely rotatable and comprising a torsion spring (42), and a member for rotating the actuator, characterised in that the valve includes means (424) for positioning the spring (42).

Description

VANNE DE CIRCULATION DE FLUIDE  FLUID CIRCULATION VALVE
La présente invention concerne le domaine des vannes de circulation de fluide, et plus précisément une vanne de circulation de fluide pour véhicule automobile comportant un actionneur avec ressort de rappel. The present invention relates to the field of fluid circulation valves, and more specifically a fluid circulation valve for a motor vehicle comprising an actuator with return spring.
La vanne selon l'invention est plus particulièrement destinée à des applications en tant que vanne doseuse de gaz d'admission de moteurs à combustion interne, qu'ils soient à essence ou Diesel. Elle trouve aussi ses applications en tant que vanne de recirculation de gaz d'échappement ou vanne EGR (pour Exhaust Gaz Recirculation selon la terminologie anglaise). D'autres applications de la vanne conforme à l'invention sont également possibles sans sortir du cadre de l'invention.  The valve according to the invention is more particularly intended for applications as an intake gas metering valve of internal combustion engines, whether they are gasoline or diesel. It also finds its applications as an exhaust gas recirculation valve or EGR valve (for Exhaust Gas Recirculation according to the English terminology). Other applications of the valve according to the invention are also possible without departing from the scope of the invention.
Il est déjà connu des actionneurs, et par exemple des actionneurs de vannes de circulation de fluide, fonctionnant selon une cinématique réversible. Ces actionneurs ou arbres de commande utilisent comme élément de retour dans leur position d'équilibre un ressort de torsion lié à un secteur denté ou à une roue dentée. Ce ressort comporte une partie fixe, qui est en butée dans une fente ou sur un plot, et une partie mobile liée au secteur dentée ou la roue dentée.  It is already known actuators, and for example actuators of fluid circulation valves, operating in a reversible kinematics. These actuators or control shafts use as a return element in their equilibrium position a torsion spring connected to a toothed sector or to a gear wheel. This spring comprises a fixed portion, which abuts in a slot or a stud, and a movable portion connected to the toothed sector or the toothed wheel.
Généralement ces actionneurs ou arbres de commande sont disposés dans un environnement complexe ou espace restreint, et par exemple dans le corps d'une vanne d'un véhicule automobile comme décrit dans la demande FR2992046.  Generally these actuators or control shafts are arranged in a complex environment or restricted space, and for example in the body of a valve of a motor vehicle as described in the application FR2992046.
Un inconvénient avec ce type de dispositif provient du fait que dans de tels environnements, plusieurs éléments jouant le rôle de butée de la partie fixe sont présents. La partie fixe du ressort ne va ainsi pas être en butée sur la butée ou dans la fente initialement prévue pour un bon positionnement du ressort. Le bon positionnement du ressort est important pour garantir le bon angle de tarage et donc le bon couple de rappel de la cinématique de l'actionneur. Un mauvais positionnement influence donc le couple de rappel qui n'est plus aussi efficace que ce qu'il devrait l'être. Pour cela, la présente invention propose une vanne de circulation de fluide comportant un corps présentant un conduit de passage du fluide, un volet obturateur du conduit, un actionneur du volet, l'actionneur étant libre en rotation et comportant un ressort de torsion, et un organe d'entraînement en rotation de l'actionneur, la vanne comprenant des moyens de positionnement du ressort. A disadvantage with this type of device comes from the fact that in such environments, several elements acting as stop of the fixed part are present. The fixed part of the spring will not be in abutment on the abutment or in the slot initially provided for a good positioning of the spring. The correct positioning of the spring is important to ensure the correct tare angle and therefore the good restoring torque of the kinematics of the actuator. Incorrect positioning therefore influences the booster torque which is not as effective as it should be. For this purpose, the present invention proposes a fluid circulation valve comprising a body having a fluid passage duct, a shutter shutter of the duct, an actuator of the flap, the actuator being free to rotate and comprising a torsion spring, and a member for rotating the actuator, the valve comprising spring positioning means.
L'invention présente ainsi l'avantage de permettre de guider le ressort jusqu'à une position fonctionnelle dans laquelle la première extrémité du ressort, et donc le ressort également, permet un fonctionnement optimum de la vanne.  The invention thus has the advantage of allowing the spring to be guided to a functional position in which the first end of the spring, and thus the spring, also allows optimum operation of the valve.
Selon un mode de réalisation de l'invention, les moyens de positionnement sont formés par une rampe permettant de guider une première extrémité du ressort jusqu'à sa position fonctionnelle.  According to one embodiment of the invention, the positioning means are formed by a ramp for guiding a first end of the spring to its functional position.
Selon un mode de réalisation de l'invention, la rampe est formée par une glissière ou rainure.  According to one embodiment of the invention, the ramp is formed by a slide or groove.
Selon un mode de réalisation de l'invention, les moyens de positionnement de la première extrémité du ressort sont creusés dans la fonderie du corps de la vanne.  According to one embodiment of the invention, the positioning means of the first end of the spring are dug in the foundry of the body of the valve.
Selon un mode de réalisation de l'invention, les moyens de positionnement de la première extrémité du ressort sont adaptés à la taille de la première extrémité du ressort.  According to one embodiment of the invention, the positioning means of the first end of the spring are adapted to the size of the first end of the spring.
Selon un mode de réalisation de l'invention, les moyens de positionnement de la première extrémité du ressort débouchent au niveau d'une butée d'arrêt radiale de la première extrémité du ressort.  According to one embodiment of the invention, the positioning means of the first end of the spring open at a radial stop stop of the first end of the spring.
Selon un mode de réalisation de l'invention, les moyens de positionnement de la première extrémité du ressort sont disposés tout autour du ressort.  According to one embodiment of the invention, the positioning means of the first end of the spring are arranged all around the spring.
Selon un mode de réalisation de l'invention, la largeur des moyens de positionnement de la première extrémité du ressort diminue progressivement jusqu'à la butée d'arrêt radiale.  According to one embodiment of the invention, the width of the positioning means of the first end of the spring gradually decreases to the radial stop stop.
L'invention concerne également un véhicule automobile comportant une vanne selon l'invention. D'autres buts, caractéristiques et avantages de l'invention seront mieux compris et apparaîtront plus clairement à la lecture de la description faite, ci-après, en se référant aux figures annexées, données à titre d'exemple et dans lesquelles: The invention also relates to a motor vehicle comprising a valve according to the invention. Other objects, features and advantages of the invention will be better understood and will appear more clearly on reading the description given hereinafter with reference to the appended figures given by way of example and in which:
- la figure 1 est une vue en coupe axiale d'un exemple de réalisation d'une vanne de circulation de fluide conforme à l'invention,  FIG. 1 is a view in axial section of an exemplary embodiment of a fluid circulation valve according to the invention,
la figure 2 est une vue, en perspective de l'actionneur de la vanne selon l'invention,  FIG. 2 is a perspective view of the actuator of the valve according to the invention,
la figure 3 est une vue d'une partie de la vanne selon l'invention,  FIG. 3 is a view of part of the valve according to the invention,
- La figure 4 est une vue des moyens de positionnement du ressort de la vanne selon l'invention.  FIG. 4 is a view of the positioning means of the spring of the valve according to the invention.
Comme illustré sur la figure 1, l'invention concerne une vanne avec actionneur comportant des moyens de positionnement d'un ressort. L'actionneur est également appelé arbre de commande.  As illustrated in FIG. 1, the invention relates to a valve with an actuator comprising means for positioning a spring. The actuator is also called the control shaft.
Selon un mode de réalisation, l'actionneur est un actionneur de vanne de circulation de fluide, notamment pour véhicule automobile. Plus précisément, la vanne est une vanne de réglage du débit de gaz d'admission d'un moteur thermique, et en particulier une vanne doseuse pour moteur diesel.  According to one embodiment, the actuator is a fluid circulation valve actuator, in particular for a motor vehicle. More specifically, the valve is a valve for adjusting the intake gas flow rate of a heat engine, and in particular a metering valve for a diesel engine.
Selon un mode de réalisation de l'invention, l'actionneur est, par exemple, en métal, notamment en acier inoxydable.  According to one embodiment of the invention, the actuator is, for example, metal, especially stainless steel.
La vanne est une vanne bien connue de l'homme du métier et est par exemple telle que celle décrite dans la demande de brevet FR2992046.  The valve is a valve well known to those skilled in the art and is for example such as that described in the patent application FR2992046.
Notamment, la vanne comprend un corps 2 à l'intérieur duquel est ménagé un conduit 3 de circulation du fluide. Le corps 2 est ici destiné à être monté, par l'intermédiaire de raccords, sur une ligne d'admission du moteur de manière à ce que la partie des gaz circulant dans cette dérivation traverse le conduit et soit dirigée vers le moteur pour participer à la combustion. Les raccords et la ligne d'admission n'ont pas été représentés, étant bien connus en eux-mêmes. Dans le corps 2 de la vanne 1, sont reçus l'actionneur 4, libre en rotation avec, solidaire de celui-ci, un volet 5 permettant d'obturer le conduit 3 en fonction de la position angulaire de l'actionneur 4, comme illustré par la flèche 20 tournant autour de l'axe longitudinal A de l'actionneur 4. In particular, the valve comprises a body 2 inside which is formed a conduit 3 for circulating the fluid. The body 2 is here intended to be mounted, by means of connections, on an engine intake line so that the portion of the gases flowing in this branch passes through the duct and is directed towards the engine to participate in the engine. combustion. The connections and the intake line have not been shown, being well known in themselves. In the body 2 of the valve 1, are received the actuator 4, free in rotation with, integral with it, a flap 5 for closing the duct 3 according to the angular position of the actuator 4, as illustrated by the arrow 20 rotating around the longitudinal axis A of the actuator 4.
Selon un mode de réalisation de l'invention, l'actionneur4 est lié en rotation au volet d'obturation 5 par des organes de fixation 14, ici par exemple un système vis-écrous, ou autres, ce qui permet au volet de pouvoir tourner avec l'arbre entre deux positions extrêmes. Une des positions totalement ouverte, comme sur la figure 1, laisse passer le fluide, et l'autre, non illustrée, bloque son passage, le volet étant alors appliqué contre la paroi latérale du conduit 3.  According to one embodiment of the invention, the actuator 4 is connected in rotation to the shutter 5 by fasteners 14, here for example a screw-nut system, or others, which allows the shutter to be able to rotate with the tree between two extreme positions. One of the fully open positions, as in FIG. 1, lets the fluid pass, and the other, not shown, blocks its passage, the shutter then being applied against the lateral wall of the duct 3.
Selon un mode de réalisation de l'invention, la vanne comprend des moyens de liaison 6, 7 pivot entre ledit corps 2 et l'actionneur 4.  According to one embodiment of the invention, the valve comprises connecting means 6, 7 pivot between said body 2 and the actuator 4.
L'actionneur4 peut ainsi pivoter librement autour de l'axe A, par un ajustement glissant prévu entre l'arbre et les moyens de liaison.  The actuator 4 can thus pivot freely about the axis A, by a sliding adjustment provided between the shaft and the connecting means.
L'extrémité de l'actionneur, qualifiée de supérieure 12 débouche vers l'extérieur du corps 2 de la vanne 1 pour être reliée à un organe d'entraînement 21 en rotation dudit arbre de commande 4.  The end of the actuator, described as upper 12 opens outwardly of the body 2 of the valve 1 to be connected to a drive member 21 in rotation of said control shaft 4.
Comme cela est illustré sur la figure 2, selon un mode de réalisation de l'invention, l'organe d'entraînement 21 est, par exemple, un secteur denté 22 comprenant une partie centrale 24 centré sur l'actionneur 4 et une excroissance radiale 26, formant un secteur d'angle légèrement supérieur au débattement angulaire du volet et munie de dents d'engrenage 28.  As illustrated in FIG. 2, according to one embodiment of the invention, the driving member 21 is, for example, a toothed sector 22 comprising a central portion 24 centered on the actuator 4 and a radial protuberance 26, forming a corner sector slightly greater than the angular clearance of the flap and provided with gear teeth 28.
Si l'on se reporte de nouveau à la figure 1, on constate que le secteur denté 22 est ici lié en rotation à une roue de renvoie 30 libre en rotation par rapport au corps 2 autour d'un axe d'articulation 32 parallèle à l'axe longitudinal A de l'arbre de commande 4.  Referring again to FIG. 1, it can be seen that the toothed sector 22 is here rotatably connected to a return wheel 30 free in rotation with respect to the body 2 about an axis of articulation 32 parallel to the longitudinal axis A of the control shaft 4.
Selon un mode de réalisation de l'invention, la vanne comprend, un moteur électrique, non illustré, notamment un moteur pas à pas. Le moteur électrique engrène sur un grand pignon 36 de la roue de renvoi 30 tandis que le secteur denté 22 engrène sur un petit pignon 37 de cette dernière. L'actionnement du moteur entraine de la sorte une rotation de la roue de renvoie 30 qui entraine à son tour une rotation du secteur denté 22 et donc du volet 5 par l'intermédiaire de l'arbre de commande 4. According to one embodiment of the invention, the valve comprises an electric motor, not shown, in particular a stepping motor. The electric motor meshes with a large pinion 36 of the idler wheel 30 while the toothed sector 22 meshes with a small pinion 37 of the latter. The actuation of the motor thus causes a rotation of the return wheel 30 which in turn causes rotation of the toothed sector 22 and therefore of the flap 5 via the control shaft 4.
Selon un mode de réalisation de l'invention, l'organe d'entraînement 21, la roue intermédiaire 30 et/ou ledit moteur sont positionnés dans un logement 38 de la vanne fermé par un couvercle 40.  According to one embodiment of the invention, the drive member 21, the intermediate wheel 30 and / or said motor are positioned in a housing 38 of the valve closed by a cover 40.
Selon un mode de réalisation de l'invention, la vanne comprend au moins un ressort de torsion 42 permettant de positionner le volet 5 dans une position de repos, ici une position ouverte. Par position de repos, on entend une position prise lorsque le moteur de la vanne n'est pas actionné. Comme illustré sur la figure 3, une première extrémité 421 du ressort 42 prend appui sur le corps 2, et une deuxième extrémité 422 du ressort prend appui sur l'organe d'entraînement 21, au niveau d'une fente 46 illustrée figure 2. Le ressort 42 est centré, notamment, sur l'axe longitudinal A.  According to one embodiment of the invention, the valve comprises at least one torsion spring 42 for positioning the flap 5 in a rest position, here an open position. By position of rest, one hears a position taken when the motor of the valve is not actuated. As illustrated in FIG. 3, a first end 421 of the spring 42 bears on the body 2, and a second end 422 of the spring bears on the drive member 21, at the level of a slot 46 illustrated in FIG. The spring 42 is centered, in particular, on the longitudinal axis A.
La fente 46 accueille ainsi la deuxième extrémité 422 du ressort 42, illustré figure 1. La fente 46 traverse axialement la paroi 50 de l'organe d'entraînement 21. La fente 46 est orientée, par exemple, selon un secteur d'angle, centré sur axe longitudinal A de l'actionneur 4. La fente 46 définit ainsi une position d'accrochage du ressort 42.  The slot 46 thus accommodates the second end 422 of the spring 42, illustrated in FIG. 1. The slot 46 passes axially through the wall 50 of the drive member 21. The slot 46 is oriented, for example, along a corner sector, centered on the longitudinal axis A of the actuator 4. The slot 46 thus defines an attachment position of the spring 42.
La première extrémité 421 du ressort 42 est ainsi en appui sur le corps 2 de la vanne. Cette première extrémité 421 est également appelée extrémité fixe par opposition à la deuxième extrémité 422 qui est entraînée par l'organe d'entraînement 21. En effet, cette première extrémité 421 du ressort 42 n'est pas entraînée en rotation par l'organe d'entraînement 21.  The first end 421 of the spring 42 is thus supported on the body 2 of the valve. This first end 421 is also called fixed end in opposition to the second end 422 which is driven by the drive member 21. Indeed, this first end 421 of the spring 42 is not rotated by the body member. 21 training.
La première extrémité 421 du ressort 42 est en appuie sur un moyen, d'arrêt radial, du corps 2. Selon un mode de réalisation de l'invention, ce moyen d'arrêt 423 est une butée, et par exemple un plot, contre lequel bute la première extrémité 421 du ressort 42. The first end 421 of the spring 42 is pressed against a radial stop means of the body 2. According to one embodiment of the invention, this stop means 423 is a stop, and for example a stud, against which the first end 421 of the spring 42 abuts.
Selon un autre mode de réalisation de l'invention, ce moyen d'arrêt 423 est une fente, non illustrée, dans laquelle s'insère la première extrémité 421 du ressort 42.  According to another embodiment of the invention, this stop means 423 is a slot, not shown, in which the first end 421 of the spring 42 is inserted.
Afin que la première extrémité 421 du ressort 42 soit dans une position correcte, quelque soit sa position de départ lors du montage de la vanne, la vanne selon l'invention comporte des moyens de positionnement 424 du ressort illustrés figure 4.  So that the first end 421 of the spring 42 is in a correct position, whatever its starting position when mounting the valve, the valve according to the invention comprises positioning means 424 of the spring illustrated in FIG. 4.
Plus précisément, ces moyens 424 permettent de guider la première extrémité 421 du ressort 42 jusqu'à sa position fonctionnelle.  More precisely, these means 424 make it possible to guide the first end 421 of the spring 42 to its functional position.
On entend par position fonctionnelle, la position dans laquelle la première extrémité 421 du ressort 42, et donc le ressort 42 également, le fonctionnement de la vanne est optimum. Comme expliqué précédemment, le bon positionnement du ressort est important pour garantir le bon angle de tarage et donc le bon couple de rappel de la cinématique de l'actionneur. Un mauvais positionnement influence donc le couple de rappel qui n'est plus aussi efficace que ce qu'il devrait l'être. Ainsi, lorsque la première extrémité 421 du ressort 42 est correctement positionnée, le ressort 42 joue son rôle auprès de l'organe de l'entraînement 21 en le ramenant dans sa position de repos.  By functional position is meant the position in which the first end 421 of the spring 42, and therefore the spring 42 also, the operation of the valve is optimum. As explained above, the correct positioning of the spring is important to ensure the correct tare angle and therefore the good restoring torque of the kinematics of the actuator. Incorrect positioning therefore influences the booster torque which is not as effective as it should be. Thus, when the first end 421 of the spring 42 is correctly positioned, the spring 42 plays its role near the drive member 21 by returning it to its rest position.
Selon un mode de réalisation de l'invention, les moyens de positionnement 424 sont formés par une rampe creusée dans la fonderie du corps 2 de la vanne. Plus précisément, cette rampe est formée par une glissière ou rainure.  According to one embodiment of the invention, the positioning means 424 are formed by a ramp dug in the casting of the body 2 of the valve. More specifically, this ramp is formed by a slide or groove.
La forme de la rampe 424 est adaptée à la taille de la première extrémité The shape of the ramp 424 is adapted to the size of the first end
421 du ressort 42. La rampe 424 permet ainsi à la première extrémité 421 du ressort de glisser ou coulisser jusqu'à la butée qui va l'arrêter. 421 of the spring 42. The ramp 424 and allows the first end 421 of the spring to slide or slide to the stop which will stop it.
La rampe 424 guide le ressort jusqu'à la butée d'arrêt. La rampe 424 débouche ainsi au niveau de la butée d'arrêt. Selon un mode de réalisation de l'invention, la rampe 424 est disposée tout autour du ressort 42. Ramp 424 guides the spring to the stop. The ramp 424 thus opens at the stop stop. According to one embodiment of the invention, the ramp 424 is arranged all around the spring 42.
Selon un mode de réalisation de l'invention, la largeur de la rampe 424 diminue progressivement jusqu'à la butée d'arrêt. Ces moyens de positionnement 424 garantissent un chemin direct à l'extrémité du ressort jusqu'à la butée qui permet le bon positionnement du ressort 42. Il n'y a ainsi plus aucune butée supplémentaire sur le chemin de la première extrémité 421 du ressort 42 qui pourrait empêcher son bon positionnement.  According to one embodiment of the invention, the width of the ramp 424 gradually decreases to the stop stop. These positioning means 424 ensure a direct path at the end of the spring to the stop which allows the correct positioning of the spring 42. There is thus no additional stop in the path of the first end 421 of the spring 42 which could prevent its good positioning.
Selon un mode de réalisation de l'invention, la vanne comprend une cible de capteur 66. Il s'agit, par exemple, d'un aimant plat décrit dans la demande FR2992046.  According to one embodiment of the invention, the valve comprises a sensor target 66. It is, for example, a flat magnet described in the application FR2992046.
Une telle vanne est plus particulièrement destinée à des applications en tant que vanne doseuse de gaz d'admission de moteurs à combustion interne, qu'ils soient à essence ou Diesel. Elle trouve aussi ses applications en tant que vanne de recirculation de gaz d'échappement ou vanne EGR (pour Exhaust Gaz Recirculation selon la terminologie anglaise). D'autres applications de la vanne conforme à l'invention sont également possibles sans sortir du cadre de l'invention.  Such a valve is more particularly intended for applications as an intake gas metering valve of internal combustion engines, whether gasoline or diesel. It also finds its applications as an exhaust gas recirculation valve or EGR valve (for Exhaust Gas Recirculation according to the English terminology). Other applications of the valve according to the invention are also possible without departing from the scope of the invention.
La portée de la présente invention ne se limite pas aux détails donnés ci- dessus et permet des modes de réalisation sous de nombreuses autres formes spécifiques sans s'éloigner du domaine d'application de l'invention. Par conséquent, les présents modes de réalisation doivent être considérés à titre d'illustration, et peuvent être modifiés sans toutefois sortir de la portée définie par les revendications.  The scope of the present invention is not limited to the details given above and allows embodiments in many other specific forms without departing from the scope of the invention. Therefore, the present embodiments should be considered by way of illustration, and may be modified without departing from the scope defined by the claims.

Claims

REVENDICATIONS
1. Vanne de circulation de fluide comportant un corps (2) présentant un conduit (3) de passage du fluide, un volet (5) obturateur du conduit (3), un actionneur (4) du volet (5), l'actionneur étant libre en rotation et comportant un ressort de torsion, et un organe (21) d'entraînement en rotation de l'actionneur (4), caractérisé en ce que la vanne comprend des moyens de positionnement (424) du ressort (42). 1. Fluid circulation valve comprising a body (2) having a conduit (3) for the passage of fluid, a flap (5) shutter of the duct (3), an actuator (4) of the flap (5), the actuator being free in rotation and comprising a torsion spring, and a member (21) for rotating the actuator (4), characterized in that the valve comprises positioning means (424) of the spring (42).
2. Vanne selon la revendication 1, dans laquelle les moyens de positionnement (424) sont formés par une rampe (424) permettant de guider une première extrémité (421) du ressort (42) jusqu'à sa position fonctionnelle.  2. Valve according to claim 1, wherein the positioning means (424) are formed by a ramp (424) for guiding a first end (421) of the spring (42) to its operative position.
3. Vanne selon la revendication 2, dans laquelle la rampe (424) est formée par une glissière ou rainure.  3. Valve according to claim 2, wherein the ramp (424) is formed by a slide or groove.
4. Vanne selon une des revendications 1 à 3, dans laquelle les moyens de positionnement (424) de la première extrémité du ressort sont creusés dans la fonderie du corps (2) de la vanne.  4. Valve according to one of claims 1 to 3, wherein the positioning means (424) of the first end of the spring are hollowed in the casting of the body (2) of the valve.
5. Vanne selon une des revendications 1 à 4, dans laquelle les moyens de positionnement (424) de la première extrémité du ressort sont adaptés à la taille de la première extrémité (421) du ressort (42).  5. Valve according to one of claims 1 to 4, wherein the positioning means (424) of the first end of the spring are adapted to the size of the first end (421) of the spring (42).
6. Vanne selon une des revendications 1 à 5, dans laquelle les moyens de positionnement (424) de la première extrémité du ressort débouchent au niveau d'une butée d'arrêt radiale (423) de la première extrémité (421) du ressort (42).  6. Valve according to one of claims 1 to 5, wherein the positioning means (424) of the first end of the spring open at a radial stop (423) of the first end (421) of the spring ( 42).
7. Vanne selon une des revendications 1 à 6, dans laquelle les moyens de positionnement de la première extrémité du ressort (424) sont disposés tout autour du ressort (42).  7. Valve according to one of claims 1 to 6, wherein the positioning means of the first end of the spring (424) are arranged all around the spring (42).
8. Vanne selon une des revendications 1 à 7, dans laquelle la largeur des moyens de positionnement (424) de la première extrémité du ressort diminue progressivement jusqu'à la butée d'arrêt radiale (423). 8. Valve according to one of claims 1 to 7, wherein the width of the positioning means (424) of the first end of the spring gradually decreases to the radial stop stop (423).
9. Véhicule automobile comportant une vanne selon une des revendications l à 8. 9. Motor vehicle having a valve according to one of claims 1 to 8.
PCT/FR2015/051094 2014-04-22 2015-04-22 Fluid flow valve WO2015162380A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201580032961.3A CN106460680B (en) 2014-04-22 2015-04-22 Fluid circulation valve
EP15725783.3A EP3134630B1 (en) 2014-04-22 2015-04-22 Fluid valve

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1453603A FR3020110B1 (en) 2014-04-22 2014-04-22 FLUID CIRCULATION VALVE
FR1453603 2014-04-22

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2248272A (en) * 1990-09-28 1992-04-01 Weber Srl Mounting throttle valve biasing springs
EP1179665A2 (en) * 2000-08-07 2002-02-13 Visteon Global Technologies, Inc. Electronic throttle return spring assembly
US20090126356A1 (en) * 2007-11-21 2009-05-21 Kwin Abram Offset passive valve for vehicle exhaust system
EP2562449A1 (en) * 2011-08-25 2013-02-27 Valeo Systèmes de Contrôle Moteur Fluid circulation valve having an axial return spring
FR2992046A1 (en) 2012-06-15 2013-12-20 Valeo Sys Controle Moteur Sas Fluid flow valve i.e. exhaust gas recirculation valve for diesel engine of car, has control shaft for controlling flap for closing conduit, and drive element for rotating control shaft, where drive element is molded onto control shaft

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2248272A (en) * 1990-09-28 1992-04-01 Weber Srl Mounting throttle valve biasing springs
EP1179665A2 (en) * 2000-08-07 2002-02-13 Visteon Global Technologies, Inc. Electronic throttle return spring assembly
US20090126356A1 (en) * 2007-11-21 2009-05-21 Kwin Abram Offset passive valve for vehicle exhaust system
EP2562449A1 (en) * 2011-08-25 2013-02-27 Valeo Systèmes de Contrôle Moteur Fluid circulation valve having an axial return spring
FR2992046A1 (en) 2012-06-15 2013-12-20 Valeo Sys Controle Moteur Sas Fluid flow valve i.e. exhaust gas recirculation valve for diesel engine of car, has control shaft for controlling flap for closing conduit, and drive element for rotating control shaft, where drive element is molded onto control shaft

Also Published As

Publication number Publication date
CN106460680B (en) 2020-11-03
FR3020110A1 (en) 2015-10-23
CN106460680A (en) 2017-02-22
EP3134630A1 (en) 2017-03-01
EP3134630B1 (en) 2022-11-23
FR3020110B1 (en) 2017-08-18

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