EP0409713B1 - Control device for a gas inlet trottle valve for a combustion engine - Google Patents

Control device for a gas inlet trottle valve for a combustion engine Download PDF

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Publication number
EP0409713B1
EP0409713B1 EP19900402045 EP90402045A EP0409713B1 EP 0409713 B1 EP0409713 B1 EP 0409713B1 EP 19900402045 EP19900402045 EP 19900402045 EP 90402045 A EP90402045 A EP 90402045A EP 0409713 B1 EP0409713 B1 EP 0409713B1
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EP
European Patent Office
Prior art keywords
damper
throttle valve
spring
butterfly
point
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.)
Expired - Lifetime
Application number
EP19900402045
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German (de)
French (fr)
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EP0409713A1 (en
Inventor
Jean Tiphaine
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.)
Automobiles Peugeot SA
Automobiles Citroen SA
Original Assignee
Automobiles Peugeot SA
Automobiles Citroen SA
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Publication of EP0409713A1 publication Critical patent/EP0409713A1/en
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Publication of EP0409713B1 publication Critical patent/EP0409713B1/en
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Expired - Lifetime legal-status Critical Current

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    • 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
    • F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
    • 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
    • F02M19/00—Details, component parts, or accessories of carburettors, not provided for in, or of interest apart from, the apparatus of groups F02M1/00 - F02M17/00
    • F02M19/12—External control gear, e.g. having dash-pots
    • F02M19/122—Damping elements
    • 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
    • F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
    • F02D2009/0201—Arrangements; Control features; Details thereof
    • F02D2009/0259—Arrangements; Control features; Details thereof having a dashpot, e.g. working in the throttle opening and closing directions
    • 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
    • F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
    • F02D2009/0201—Arrangements; Control features; Details thereof
    • F02D2009/0261—Arrangements; Control features; Details thereof having a specially shaped transmission member, e.g. a cam, specially toothed gears, with a clutch

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)

Description

La présente invention a essentiellement pour objet un dispositif de commande d'un papillon d'admission des gaz dans un moteur à combustion interne ou externe.The present invention essentially relates to a device for controlling a throttle valve for admitting gases into an internal or external combustion engine.

Si l'on se reporte par exemple au document FR-A-2 602 004, on constate qu'il a déjà été proposé un dispositif de commande d'un papillon d'admission des gaz dans un moteur à combustion et du type dans lequel une pédale de manoeuvre est reliée au papillon par des moyens de liaison qui comprennent notamment un élément formant ressort et dont la partie située entre le ressort et le papillon est reliée à un amortisseur.If one refers for example to document FR-A-2 602 004, it can be seen that a device has already been proposed for controlling a throttle valve for admitting gases into a combustion engine and of the type in which an operating pedal is connected to the butterfly by connecting means which in particular comprise a spring element and the part of which situated between the spring and the butterfly is connected to a damper.

Toutefois, un tel dispositif présente un certain nombre d'inconvénients parmi lesquels on peut citer la complexité de la conception mécanique et donc de la fabrication, ainsi que la fiabilité de fonctionnement probablement aléatoire en raison de la multiplicité des divers éléments composant le dispositif.However, such a device has a certain number of drawbacks among which one can cite the complexity of the mechanical design and therefore of the manufacturing, as well as the reliability of operation, which is probably random due to the multiplicity of the various elements making up the device.

Aussi, la présente invention a pour but de remédier à ces inconvénients en proposant un dispositif de commande d'un papillon d'admission des gaz qui est d'une structure simplifiée et qui procure avantageusement un amortissement en début d'ouverture et de fermeture du papillon.Also, the present invention aims to remedy these drawbacks by proposing a device for controlling a throttle valve which is of a simplified structure and which advantageously provides damping at the start of opening and closing of the butterfly.

On connaît par ailleurs d'après le document FR-A-2 528 113 un dispositif de commande d'un papillon d'admission du type décrit dans le préambule de la revendication 1.Also known from document FR-A-2 528 113 is a device for controlling an intake throttle of the type described in the preamble to claim 1.

L'invention a pour objet un dispositif de commande d'un papillon d'admission des gaz dans un moteur à combustion et du type dans lequel une pédale de manoeuvre est reliée au papillon par des moyens de liaison qui comprennent un élément formant ressort et dont la partie située entre le ressort et le papillon est reliée à un amortisseur qui est monté entre deux points d'articulation dont l'un s'articule sur une pièce pivotant sur un axe fixe, l'amortisseur étant du type à simple effet et disposé de manière à n'agir que lorsque sa ligne d'action s'approche de l'axe fixe, caractérisé en ce que la ligne d'action de l'amortisseur passe par ledit axe fixe lorsque le papillon est dans une position d'ouverture partielle, et se situe d'un côté ou de l'autre de cet axe fixe lorsque le papillon est en position de grande ouverture ou de fermeture.The subject of the invention is a device for controlling a throttle valve for admitting gases into a combustion engine and of the type in which an operating pedal is connected to the throttle valve by connection means which comprise a spring element and the part between the spring and the butterfly is connected to a damper which is mounted between two points of articulation, one of which is articulated on a part pivoting on a fixed axis, the damper being of the single-acting type and arranged so as to act only when its line of action approaches the fixed axis, characterized in that the line of action of the shock absorber passes through said fixed axis when the butterfly is in a position partial opening, and is located on one side or the other of this fixed axis when the throttle is in the large opening or closing position.

Suivant un exemple de réalisation, ce dispositif est encore caractérisé en ce que le point d'articulation précité de l'amortisseur à la pièce est solidaire d'un câble de commande du papillon, tandis que l'autre point d'articulation ce l'amortisseur est fixe.According to an exemplary embodiment, this device is further characterized in that the aforementioned articulation point of the damper to the workpiece is integral with a throttle control cable, while the other articulation point this shock absorber is fixed.

On précisera ici que la pièce précitée est constituée par une biellette de poussée.It will be specified here that the aforementioned part is constituted by a thrust link.

Suivant un autre mode de réalisation, l'autre point d'articulation de l'amortisseur s'articule sur l'extrémité d'un levier solidaire du papillon et dont l'autre extrémité est articulée sur la pièce par l'intermédiaire d'une biellette.According to another embodiment, the other point of articulation of the damper is articulated on the end of a lever integral with the butterfly and the other end of which is articulated on the part by means of a link.

Dans ce cas, la pièce précitée présente une forme de came sur laquelle est articulée la biellette précitée.In this case, the aforementioned part has a cam shape on which the aforementioned link is articulated.

Mais d'autres avantages de l'invention apparaîtront mieux dans la description détaillée qui suit et se réfère aux dessins annexés, donnés uniquement à titre d'exemple, et dans lesquels :

  • La figure 1 illustre schématiquement un dispositif conforme aux principes selon cette invention;
  • La figure 2 illustre schématiquement et pour une meilleure compréhension trois positions de l'amortisseur et de la pièce à laquelle est articulé cet amortisseur et correspondant respectivement à une position de ralenti c'est-à-dire de faible ouverture du papillon, à une position d'ouverture plus grande du papillon, et à une position d'ouverture presque totale du papillon ;
  • La figure 3 est une vue schématique d'un autre mode de réalisation de dispositif de commande de papillon selon cette invention ; et
  • La figure 4 montre trois courbes illustrant respectivement la variation de la longueur de l'amortisseur, l'effort d'amortissement à l'ouverture du papillon et l'effort d'amortissement à la fermeture de ce papillon, en fonction de l'angle d'ouverture de ce dernier.
However, other advantages of the invention will appear better in the detailed description which follows and refers to the appended drawings, given solely by way of example, and in which:
  • Figure 1 schematically illustrates a device according to the principles according to this invention;
  • Figure 2 illustrates schematically and for a better understanding three positions of the shock absorber and of the part to which this shock absorber is articulated and corresponding respectively to an idle position, that is to say of small throttle opening, to a position of greater throttle opening, and to a position d 'almost complete opening of the butterfly;
  • Figure 3 is a schematic view of another embodiment of the throttle control device according to this invention; and
  • FIG. 4 shows three curves respectively illustrating the variation in the length of the damper, the damping force at the opening of the butterfly and the damping force at the closing of this butterfly, as a function of the angle opening of the latter.

En se reportant aux figures 1 et 3, on voit un dispositif de commande d'un papillon 1 d'admission des gaz dans un moteur à combustion, ledit papillon étant commandé par une pédale d'accélérateur 2 articulée en 3 sur le véhicule.Referring to Figures 1 and 3, there is shown a device for controlling a throttle valve 1 for admitting gases into a combustion engine, said throttle valve being controlled by an accelerator pedal 2 articulated at 3 on the vehicle.

La pédale 2 est reliée au papillon 1 par l'intermédiaire d'un élément élastique 4 formant par exemple un ressort. Entre le ressort 4 et le papillon 1 est interposé un amortisseur 5 d'un type connu en soi et comprenant essentiellement, comme on le voit bien sur les figures 1 et 3 un corps 6 dans lequel est logée une membrane déformable 7 sollicitée par un ressort 8 et comportant, comme cela est bien visible sur la figure 3, un orifice 9 restreint établissant une communication permanente entre les deux chambres séparées par la membrane 7.The pedal 2 is connected to the butterfly 1 by means of an elastic element 4, for example forming a spring. Between the spring 4 and the butterfly 1 is interposed a damper 5 of a type known per se and essentially comprising, as can be seen in Figures 1 and 3 a body 6 in which is housed a deformable membrane 7 biased by a spring 8 and comprising, as is clearly visible in FIG. 3, a restricted orifice 9 establishing permanent communication between the two chambers separated by the membrane 7.

Conformément à l'invention, l'amortisseur 5 est monté par ses extrémités entre deux points d'articulation 10, 11 dont l'un 11 s'articule sur une pièce 12 susceptible de pivoter autour d'un axe fixe 13 de sorte que, comme on le comprend, la ligne d'action de l'amortisseur 5 pourra soit passer par l'axe fixe 13, soit se situer d'un côté ou de l'autre de cet axe fixe en fonction de la pression exercée sur la pédale 2.According to the invention, the damper 5 is mounted by its ends between two articulation points 10, 11 one of which 11 is articulated on a part 12 capable of pivoting about a fixed axis 13 so that, as we understand, the line of action of the shock absorber 5 can either pass through the fixed axis 13 or be located on one side or the other of this fixed axis as a function of the pressure exerted on the pedal 2.

Suivant le mode de réalisation illustré par les figures 1 et 2, le point d'articulation 11 de l'amortisseur 5 à la pièce 12 est solidaire d'un câble 14 de commande du papillon 1. Ce câble 14 est relié en 15 à la pédale 2 et en 16 à une bobinette 17 de commande du papillon 1, ce dernier étant sollicité par un ressort de rappel montré schématiquement en 18. Le ressort 4 mentionne précédemment est ici interposé sur le câble 14 entre le point 15 et le point d'articulation 11 de l'amortisseur sur la pièce 12 et sur ledit câble 14.According to the embodiment illustrated in FIGS. 1 and 2, the articulation point 11 of the damper 5 to the part 12 is integral with a cable 14 for controlling the throttle 1. This cable 14 is connected at 15 to the pedal 2 and at 16 to a reel 17 for controlling the butterfly valve 1, the latter being biased by a return spring shown diagrammatically at 18. The spring 4 mentioned previously is here interposed on the cable 14 between point 15 and the point of articulation 11 of the damper on the part 12 and on said cable 14.

L'autre point 10 d'articulation de l'amortisseur 5 est un point fixe, de sorte que l'amortisseur peut pivoter autour de ce point, de même que le point d'articulation 13 de la pièce 12 est lui aussi un point fixe.The other point 10 of articulation of the damper 5 is a fixed point, so that the damper can pivot around this point, just as the articulation point 13 of the part 12 is also a fixed point .

Cette pièce 12 est constituée par une biellette de poussée, mais, pour une meilleure compréhension de l'invention, on expliquera ci-après comment fonctionne le dispositif qui vient d'être décrit en s'aidant de la figure 2.This part 12 is constituted by a push rod, but, for a better understanding of the invention, the following will explain how the device which has just been described works with the aid of FIG. 2.

On partira de la position de repos visible sur la figure 1, position pour laquelle aucune pression n'est exercée sur la pédale 2 et pour laquelle les points d'articulation 10, 11 et 13 ne sont pas alignés.We will start from the visible rest position in Figure 1, position for which no pressure is exerted on the pedal 2 and for which the articulation points 10, 11 and 13 are not aligned.

Si maintenant on exerce une pression sur la pédale d'accélérateur 2, une traction sera exercée sur le câble 14 via le ressort 4 ce qui va provoquer le déplacement du point d'articulation 11 et donc la rotation de l'amortisseur 5 autour du point 10 et de la biellette 12 autour du point 13. Cette rotation fera que la tige 19 de l'amortisseur 5 comprimera la membrane 7 de l'amortisseur sous l'action de la biellette de poussée 12. Dès lors, on comprend qu'une telle compression opposera un effort temporaire à l'ouverture du papillon, étant entendu que le ressort 4 interposé entre la pédale 2 et le point d'articulation 11 intégrera la résistance procurée par l'amortisseur 5. Ainsi, le mouvement de rotation du papillon 1 en début d'ouverture se trouve amorti par rapport à l'action sur la pédale 2, ce qui améliore notablement l'agrément de conduite, car la brutalité de l'ouverture du papillon est réduite et les à-coups sont évités.If now there is pressure on the accelerator pedal 2, traction will be exerted on the cable 14 via the spring 4 which will cause the displacement of the articulation point 11 and therefore the rotation of the damper 5 around the point 10 and of the link 12 around the point 13. This rotation will cause the rod 19 of the shock absorber 5 will compress the diaphragm 7 of the shock absorber under the action of the thrust link 12. Therefore, it is understood that such compression will oppose a temporary force to the opening of the butterfly, it being understood that the spring 4 interposed between the pedal 2 and the articulation point 11 will integrate the resistance provided by the damper 5. Thus, the rotational movement of the butterfly 1 at the start of opening is damped with respect to the action on the pedal 2, this which significantly improves driving pleasure, because the brutality of the throttle opening is reduced and jolts are avoided.

Si l'on continue d'exercer une pression sur la pédale 2, il se produira un franchissement du "point mort" constitué par l'alignement des points d'articulation 10, 11 et 13, et, en position plus enfoncée de la pédale 2, les points d'articulations 10, 11 et 13 seront à nouveau désalignés, mais suivant la position inverse de celle représentée sur la figure 1, ce qui provoquera en quelque sorte une détente de l'amortisseur 5 au fur et à mesure que l'amortisseur parvient vers la position de pleine ouverture du papillon 1.If one continues to exert a pressure on the pedal 2, it will occur a crossing of the "dead center" constituted by the alignment of the points of articulation 10, 11 and 13, and, in the more depressed position of the pedal 2, the points of articulations 10, 11 and 13 will again be misaligned, but in the opposite position to that shown in FIG. 1, which will in a way cause the shock absorber 5 to relax as the the shock absorber reaches the fully open throttle position 1.

Puis, en relâchant la pression du pied sur la pédale 2, l'effet d'amortissement précédemment décrit se produira à nouveau, en sens inverse, c'est-à-dire que le début du mouvement de fermeture du papillon 1 sera amorti, ce qui réduit avantageusement les émissions d'hydrocarbures.Then, by releasing the pressure of the foot on the pedal 2, the damping effect previously described will again occur, in the opposite direction, that is to say that the start of the closing movement of the butterfly 1 will be damped, which advantageously reduces hydrocarbon emissions.

On comprend donc que l'amortissement s'exerce dans les deux sens, c'est-à-dire tant à l'ouverture qu'à la fermeture du papillon.We therefore understand that the amortization is exercised in the two-way, that is, both when the butterfly opens and closes.

Les divers mouvements ci-dessus se retrouvent sur la figure 2 où l'on voit en D la course du câble 14 et en E la course de compression appliquée à l'amortisseur 5 dans la position "point mort", c'est-à-dire d'alignement des points d'articulation 10, 11 et 13. Sur cette figure, on a montré en lia la position du point d'articulation 11 correspondant à la position ralenti, et en 11b la position du point d'articulation 11 correspondant à la position "pied à fond" sur la pédale d'accélérateur 2.The various movements above are found in Figure 2 where we see in D the race of the cable 14 and in E the compression stroke applied to the damper 5 in the "neutral" position, that is to say say alignment of the articulation points 10, 11 and 13. In this figure, the position of the articulation point 11 corresponding to the idle position has been shown in lia, and at 11b the position of the articulation point 11 corresponding to the "full foot" position on the accelerator pedal 2.

On observera ici que la position relative initiale des points d'articulation 10, 11 et 13 définit la course de compression maximum obtenue lorsque ces trois points sont alignés.It will be observed here that the initial relative position of the articulation points 10, 11 and 13 defines the maximum compression stroke obtained when these three points are aligned.

Dans le deuxième mode de réalisation du dispositif selon cette invention et visible sur la figure 3, on voit que le câble 14 actionnable par la pédale d'accélérateur est relié, par l'intermédiaire du ressort 4, à une pièce 12 qui, ici, présente la forme d'une came pivotant autour de l'axe fixe 13.In the second embodiment of the device according to this invention and visible in FIG. 3, it can be seen that the cable 14 actuable by the accelerator pedal is connected, via the spring 4, to a part 12 which, here, has the shape of a cam pivoting around the fixed axis 13.

Comme pour le mode de réalisation précédent, le point d'articulation 11 de la tige 19 de l'amortisseur 5 s'articule sur la pièce 12.As for the previous embodiment, the articulation point 11 of the rod 19 of the damper 5 is articulated on the part 12.

Mais ici, l'autre point 10 d'articulation de l'amortisseur 5 n'est plus un point d'articulation fixe, mais s'articule sur l'extrémité d'un levier 20 solidaire par sa partie 20a de l'axe 20b du papillon d'admission des gaz 1.But here, the other point 10 of articulation of the damper 5 is no longer a fixed point of articulation, but is articulated on the end of a lever 20 secured by its part 20a of the axis 20b throttle valve 1.

Quant à l'autre extrémité du levier 20, elle est articulée en 21 sur une biellette de liaison 22 elle-même articulée en 23 sur la pièce ou came 12.As for the other end of the lever 20, it is articulated at 21 on a connecting rod 22 itself articulated at 23 on the part or cam 12.

En d'autres termes, on comprend que le papillon 1 est commandé indirectement par un système à levier 20 et biellette 22 permettant une démultiplication en début d'ouverture du papillon 1.In other words, it is understood that the butterfly 1 is controlled indirectly by a lever 20 and link 22 system allowing a reduction in the start of opening of the butterfly 1.

On a montré en 24 un ressort attelé au levier 20 et permettant le rappel en position de fermeture du papillon 1.There is shown at 24 a spring coupled to the lever 20 and allowing the return in the closed position of the butterfly 1.

On comprend qu'ici, la position relative des points d'articulation 10 et 11 par rapport aux axes fixes 13 et 20b de la came 12 et du papillon 1 respectivement détermine la variation de distance qui se produit au cours du mouvement entre les points d'articulation 10 et 11. Ainsi, on pourra ajuster la course d'amortissement et l'angle à partir duquel l'amortissement sera appliqué. Comme on le voit bien sur la première courbe de la figure 4, au-delà d'une certaine valeur d'ouverture, la distance entre les points d'articulation 10 et 11 va cesser de décroître, de sorte que l'ouverture du papillon se fera sans retard.It is understood that here, the relative position of the points of articulation 10 and 11 relative to the fixed axes 13 and 20b of the cam 12 and of the butterfly 1 respectively determines the variation in distance which occurs during the movement between the points d hinge 10 and 11. Thus, we can adjust the damping stroke and the angle from which the damping will be applied. As can be seen on the first curve in Figure 4, beyond a certain opening value, the distance between the points of articulation 10 and 11 will stop decreasing, so that the opening of the butterfly will be done without delay.

Il est à noter que l'amortissement s'effectuera de façon analogue au retour sur ralenti.It should be noted that the amortization will be carried out in a similar way to the return to idling.

Sur la figure 4, on a montré en F la distance de départ entre les points d'articulation 10 et 11, en G la position ralenti et en H la position "pied à fond" sur la pédale d'accélérateur.In FIG. 4, the starting distance between the points of articulation 10 and 11 has been shown in F, in G the idle position and in H the "full foot" position on the accelerator pedal.

Enfin, les deux autres courbes de la figure 4 illustrent clairement l'effort procuré par l'amortisseur à l'ouverture et a la fermeture du papillon en fonction de son angle d'ouverture.Finally, the two other curves in FIG. 4 clearly illustrate the force provided by the shock absorber when opening and closing the butterfly depending on its opening angle.

On notera que les angles pour lesquels s'effectue un amortissement à l'ouverture et à la fermeture ne sont pas nécessairement les mêmes.It will be noted that the angles for which damping takes place on opening and closing are not necessarily the same.

Ainsi, le ressort 4 peut être remplacé par un autre moyen élastique, par exemple solidaire de la biellette de liaison 22, celle-ci pouvant être réalisée de manière à constituer elle-même un ressort.Thus, the spring 4 can be replaced by another elastic means, for example integral with the connecting rod 22, the latter being able to be produced so as to constitute itself a spring.

Claims (6)

  1. Device for the control of a throttle valve for the intake of gases into a combustion engine and of the type in which an operating pedal (2) is connected to the throttle valve (1) by connecting means which comprise an element forming a spring (4) and the portion of which located between the spring (4) and the throttle valve (1) is connected to a damper (5) which is mounted between two pivotal connection points (10, 11), one (11) of which is pivotally connected to a part (12), swinging about a stationary pin (13), of the damper (5) being of the single acting type and disposed so as to only act when its line of action is coming closer to the stationary pin (13), characterized in that the line of action of the damper passes through the said stationary pin when the throttle valve (1) is in a partial open position and is lying on one side or on the other one of this stationary pin (13) when the throttle valve (1) is in a position of great opening or closing.
  2. Device according to claim 1, characterized in that the aforesaid point (11) for the pivotal connection of the damper (5) to the part (12) is made fast to a cable (14) for the control of the throttle valve (1) whereas the other pivotal connection point (10) of the damper (5) is stationary.
  3. Device according to claim 1 or 2, characterized in that the aforesaid part (12) consists of a thrust link.
  4. Device according to claim 1, characterized in that the other pivotal connection point (10) of the damper (5) is pivoted to the end of a lever (20) made fast to a throttle valve (1) and the other end of which is pivotally connected to the part (12) through the medium of a connecting rod (22).
  5. Device according to claim 4, characterized in that the aforesaid part (12) exhibits the shape of a cam upon which is winding a cable (14) connected to the pedal by the spring (4).
  6. Device according to claim 4, characterized in that the connecting rod (22) is elastic so as to itself constitute the spring-forming element (4).
EP19900402045 1989-07-19 1990-07-16 Control device for a gas inlet trottle valve for a combustion engine Expired - Lifetime EP0409713B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8909724A FR2650031B1 (en) 1989-07-19 1989-07-19 DEVICE FOR CONTROLLING A GAS INTAKE BUTTERFLY IN A COMBUSTION ENGINE
FR8909724 1989-07-19

Publications (2)

Publication Number Publication Date
EP0409713A1 EP0409713A1 (en) 1991-01-23
EP0409713B1 true EP0409713B1 (en) 1992-12-30

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EP19900402045 Expired - Lifetime EP0409713B1 (en) 1989-07-19 1990-07-16 Control device for a gas inlet trottle valve for a combustion engine

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DE (1) DE69000700T2 (en)
FR (1) FR2650031B1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5584273A (en) * 1995-12-04 1996-12-17 Coltec Industries Inc. Throttle valve actuator with non-linear to linear cam operation

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2528113B1 (en) * 1982-06-04 1987-04-17 Noisier Guy IMPROVEMENTS TO POWER SUPPLY CONTROL DEVICES FOR INTERNAL COMBUSTION ENGINES
FR2574121B1 (en) * 1984-11-30 1987-02-13 Renault VARIABLE PROGRESSIVITY GAS CONTROL DEVICE

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DE69000700D1 (en) 1993-02-11
FR2650031B1 (en) 1991-11-15
EP0409713A1 (en) 1991-01-23
FR2650031A1 (en) 1991-01-25
DE69000700T2 (en) 1993-07-22

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