EP0970302B1 - Device for controlling the opening and closing of at least an internal combustion engine cylinder head air conduit - Google Patents

Device for controlling the opening and closing of at least an internal combustion engine cylinder head air conduit Download PDF

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Publication number
EP0970302B1
EP0970302B1 EP99901637A EP99901637A EP0970302B1 EP 0970302 B1 EP0970302 B1 EP 0970302B1 EP 99901637 A EP99901637 A EP 99901637A EP 99901637 A EP99901637 A EP 99901637A EP 0970302 B1 EP0970302 B1 EP 0970302B1
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EP
European Patent Office
Prior art keywords
sliding gate
engine
cylinder head
constituted
closing
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
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EP99901637A
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German (de)
French (fr)
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EP0970302A1 (en
Inventor
Didier Girard
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Automobiles Peugeot SA
Automobiles Citroen SA
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Automobiles Peugeot SA
Automobiles Citroen SA
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Publication of EP0970302A1 publication Critical patent/EP0970302A1/en
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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
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F02D9/12—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having slidably-mounted valve members; having valve members movable longitudinally of conduit
    • F02D9/14—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having slidably-mounted valve members; having valve members movable longitudinally of conduit the members being slidable transversely of conduit
    • 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
    • F02D9/12—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having slidably-mounted valve members; having valve members movable longitudinally of conduit
    • F02D9/16—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having slidably-mounted valve members; having valve members movable longitudinally of conduit the members being rotatable

Definitions

  • the present invention relates to a device for command to open and close at least one duct air from an internal combustion engine cylinder head.
  • control devices opening and closing of the air intake ducts of internal combustion engines consist of a shaft arranged in the breech which crosses on both sides the conduits of admissions and which is provided with the right of each conduit of a milling on which is fixed a butterfly, which has the general shape a disc, by means of two screws.
  • Such devices require numerous machining operations. great details in the cylinder head, as well as an assembly of the butterflies in particularly difficult ducts that can lead for example to the risk of screw loss in the intake ducts, which leads to assembly times important and expensive.
  • the purpose of the present invention is to provide a opening and closing control device of at least an intake duct that resolves the disadvantages mentioned above.
  • the present invention relates to a bushel cylindrical, for opening and closing control at least one air intake duct of a cylinder head internal combustion engine, characterized in that it comprises successively along its length for each conduit of a share a first portion forming a bearing which has in section transverse the general shape of a cross and on the other hand a second portion which consists of a cylindrical bar provided with a hole whose longitudinal axis of symmetry (N) is perpendicular to the longitudinal axis (M) of said plug and whose diameter is equivalent to the diameter of the duct corresponding air intake.
  • FIG. 1 shows a cylinder head 1 of an engine with internal combustion which is conventionally provided with air intake ducts 2, for example four, arranged on one of the side faces of the cylinder head 1 and each having the general shape of an elbow, one of the holes of which is emerging at the horizontal joint plane P on which installs a camshaft housing, not shown.
  • the cylinder head 1 is advantageously provided with a device for opening and closing conduits air intake which is constituted, according to this invention of a cylindrical plug 3 arranged transversely to the air ducts 2 in a bore 4, as shown in figure 2, made in the cylinder head 1 and able to move between a first position closing the P2 pipe and a second open position P1 of said conduit under the action of an actuating means.
  • a device for opening and closing conduits air intake which is constituted, according to this invention of a cylindrical plug 3 arranged transversely to the air ducts 2 in a bore 4, as shown in figure 2, made in the cylinder head 1 and able to move between a first position closing the P2 pipe and a second open position P1 of said conduit under the action of an actuating means.
  • the bore 4 consists of a blind hole which is made so as to cross transversely on both sides intake ducts 2, as shown in Figure 2.
  • Bushel 3 consists of a one-piece assembly produced by molding a plastic material which is suitable for withstand temperatures less than or equal to 100 degrees celsius such as for example polyamide.
  • This bushel 3 comprises successively along its length for each conduit 2 on the one hand a first portion 5 forming a bearing which has in cross section the shape general of a cross and on the other hand a second portion 6 which consists of a vertical partition 7 of length roughly equivalent to the diameter of a pipe 2.
  • Each portions 5, 6 being delimited by two discs perpendicular to the longitudinal axis M of the plug 3.
  • This groove 9 is capable of receiving the end of a screw 10 guide which is fixed on the cylinder head 1, as visible on the figure 2.
  • FIGS. 2 and 3 show means actuation of the valve 3 allowing the latter to move in translation inside the bore, following a direction represented by arrow F.
  • the cylindrical plug 3 is provided with one of its ends 11 of a circular groove 12 in which is mounted an O-ring 13 thus forming a piston.
  • a closure plate 14 is fixed via screw V on the cylinder head 1 so as to close the blind hole 4 thus ensuring the tightness of the control device.
  • This plate 14 is provided with a small diameter orifice 15 allowing depression to be taken in a room 16 formed between the plate 14 and the end of the plug 3 forming piston.
  • the air supply control in the ducts intake 2 is provided by the cylindrical plug 3 which is displaceable in translation between a first position P1 by example of opening, as shown in Figure 6, or the vertical partition 7 is arranged in line with the conduits 2 air intake and a second shutter position P2, such as shown in Figures 7 and 2, or the first portion 5 of bushel 3 is arranged in line with the intake ducts 2 air.
  • This plug 3 is actuated by a system with depression / overpressure, depending on engine speed, achieved in the chamber 16 formed between the end 11 of said plug 3 and the closure plate 14 which is controlled for example by a computer, not shown.
  • the displacement of the bushel 3 is variably controlled between the two positions opening P1 and closing P2 of the intake ducts 2 air.
  • FIG 4 an alternative embodiment means for actuating the plug 3, in which the vacuum chamber 16 is replaced by a capsule with depression 17 mounted at the end of the bore 4 allowing the displacement of the plug 3 in translation, along arrow F, as a function of the engine speeds controlled by a computer, not shown.
  • FIG. 5 Another alternative embodiment of the means actuation is shown in Figure 5, in which the displacement in translation is replaced by displacement in rotation, arrow R.
  • actuation means are by example constituted by a link 18 fixed on one of the ends 11 of plug 3 which is connected to a capsule 19 to vacuum which is actuated according to the engine speeds controlled by a computer.
  • FIGS. 8 and 9 show another variant of realization of the control plug 3 allowing, advantageously, not to disturb the air flow in the air intake duct 2.
  • the shape of the plug 3 is made in such a way that this is completely erased from the air duct in position P1, as shown in Figure 8.
  • This bushel 3 comprises successively along its length for each conduit 2 on the one hand a first portion 20 forming a bearing which has in cross section the shape general of a cross and on the other hand a second portion 21 which consists of a cylindrical bar provided with an orifice 22 whose longitudinal axis of symmetry N is perpendicular to the longitudinal axis M of the plug 3 and whose diameter is equivalent to the diameter of the air intake duct corresponding, as shown in figure 8.
  • the plug 3 can be moved in translation or rotation depending on the actuation means described above or equivalent means.
  • control device of the present invention allows advantageously easier mounting in the cylinder head and to be inexpensive.

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

Description

La présente invention se rapporte un dispositif de commande d'ouverture et de fermeture d'au moins un conduit d'air d'une culasse d'un moteur à combustion interne.The present invention relates to a device for command to open and close at least one duct air from an internal combustion engine cylinder head.

De façon générale, les dispositifs de commande d'ouverture et de fermeture des conduits d'admission d'air des moteurs à combustion interne sont constitués d'un axe disposé dans la culasse qui traverse de part et d'autre les conduits d'admissions et qui est pourvu au droit de chaque conduit d'un fraisage sur lequel est fixé un papillon, qui a la forme générale d'un disque, par l'intermédiaire de deux vis.Generally speaking, the control devices opening and closing of the air intake ducts of internal combustion engines consist of a shaft arranged in the breech which crosses on both sides the conduits of admissions and which is provided with the right of each conduit of a milling on which is fixed a butterfly, which has the general shape a disc, by means of two screws.

De tels dispositifs nécessitent de nombreux usinages de grande précisions dans la culasse, ainsi qu'un montage des papillons dans les conduits particulièrement difficiles pouvant entraíner par exemple des risques de pertes de vis dans les conduits d'admission, ce qui entraíne des temps de montage important et coûteux.Such devices require numerous machining operations. great details in the cylinder head, as well as an assembly of the butterflies in particularly difficult ducts that can lead for example to the risk of screw loss in the intake ducts, which leads to assembly times important and expensive.

Le document EP-A-0 480 607 décrit, en tant que dispositif de commande d'ouverture et de fermeture de deux conduits d'admission d'air parallèles d'une culasse d'un moteur à combustion interne, un boisseau cylindrique disposé transversalement par rapport aux conduits d'air d'admission dans un alésage réalisé dans la culasse et apte à se déplacer entre une première position d'obturation des conduits et une seconde position d'ouverture de ceux-ci. Le boisseau divulgué dans ce document comporte successivement sur sa longueur pour chaque conduit un palier qui présente en coupe transversale la forme générale d'un cercle et d'autre part une seconde portion constituée d'une cloison verticale de longueur sensiblement équivalente au diamètre d'un conduit, chacune des portions étant délimitée par deux disques perpendiculaires à l'axe longitudinal du boisseau. Un inconvénient lié à ce boisseau est que l'écoulement de l'air autour de la cloison lors de la phase d'admission peut être fortement perturbé, ce qui est préjudiciable à la combustion immédiatement après. Document EP-A-0 480 607 describes, as a device for opening and closing two conduits parallel air intake of a cylinder head of a internal combustion, a cylindrical plug arranged transversely to the intake air ducts in a bore made in the cylinder head and able to move between a first position for closing the conduits and a second opening position of these. The bushel disclosed in this document successively comprises along its length for each conduit a bearing which presents in section transverse the general shape of a circle and on the other hand a second portion consisting of a vertical partition of length roughly equivalent to the diameter of a conduit, each portions being delimited by two perpendicular discs to the longitudinal axis of the plug. One drawback related to this bushel is that the air flow around the bulkhead when of the admission phase can be severely disrupted, which is detrimental to combustion immediately after.

Le but de la présente invention est de proposer un dispositif de commande d'ouverture et de fermeture d'au moins un conduit d'admission qui permet de résoudre les inconvénients mentionnés ci-dessus.The purpose of the present invention is to provide a opening and closing control device of at least an intake duct that resolves the disadvantages mentioned above.

A cet effet, la présente invention concerne un boisseau cylindrique, destiné à la commande d'ouverture et fermeture d'au moins un conduit d'admission d'air d'une culasse d'un moteur à combustion interne, caractérisé en ce qu'il comporte successivement sur sa longueur pour chaque conduit d'une part une première portion formant palier qui présente en coupe transversale la forme générale d'une croix et d'autre part une seconde portion qui est constituée d'une barre cylindrique pourvue d'un orifice dont son axe de symétrie longitudinal (N) est perpendiculaire à l'axe longitudinal (M) dudit boisseau et dont le diamètre est équivalent au diamètre du conduit d'admission d'air correspondant.To this end, the present invention relates to a bushel cylindrical, for opening and closing control at least one air intake duct of a cylinder head internal combustion engine, characterized in that it comprises successively along its length for each conduit of a share a first portion forming a bearing which has in section transverse the general shape of a cross and on the other hand a second portion which consists of a cylindrical bar provided with a hole whose longitudinal axis of symmetry (N) is perpendicular to the longitudinal axis (M) of said plug and whose diameter is equivalent to the diameter of the duct corresponding air intake.

Le dispositif de commande suivant l'invention peut également comporter une ou plusieurs des caractéristiques suivantes:

  • le boisseau est apte à se déplacer en translation dans l'alésage,
  • le boisseau est apte à se déplacer en rotation dans l'alésage,
  • le boisseau comporte sur l'une des portions formant palier, un moyen de détrompage du boisseau dans l'alésage permettant de s'assurer de la position adéquate desdites secondes portion au droit des conduits d'admission d'air,
  • le moyen de détrompage est constitué d'une rainure longitudinale qui est apte à recevoir l'extrémité d'une vis de guidage qui est fixée sur la culasse,
  • le moyen d'actionnement est constitué d'une chambre de dépression formée entre l'une des extrémités du boisseau et une plaque de fermeture qui est munie d'un orifice formant un système à dépression commandable par un calculateur en fonction des régimes moteurs,
  • le moyen d'actionnement est constitué d'une biellette fixée sur l'une des extrémités du boisseau et qui est reliée à une capsule à dépression actionnée par un calculateur en fonction des régimes moteur,
  • le boisseau est constitué d'un ensemble monopièce réalisé par moulage d'un matériau plastique qui est apte à résister à des températures inférieures ou égales à 100 degrés celsius tel que par exemple du polyamide.
The control device according to the invention may also include one or more of the following characteristics:
  • the plug is able to move in translation in the bore,
  • the plug is able to move in rotation in the bore,
  • the plug comprises on one of the portions forming a bearing, a means for coding the plug in the bore making it possible to ensure the adequate position of said second portion in line with the air intake ducts,
  • the coding means consists of a longitudinal groove which is capable of receiving the end of a guide screw which is fixed to the cylinder head,
  • the actuating means consists of a vacuum chamber formed between one end of the plug and a closure plate which is provided with an orifice forming a vacuum system controllable by a computer according to the engine speeds,
  • the actuation means consists of a rod fixed to one end of the plug and which is connected to a vacuum capsule actuated by a computer according to the engine speeds,
  • the plug consists of a one-piece assembly produced by molding a plastic material which is capable of withstanding temperatures less than or equal to 100 degrees celsius, such as for example polyamide.

Les caractéristiques de l'invention mentionnées ci-dessus, ainsi que d'autres, apparaítront plus clairement à la lecture de la description suivante de plusieurs exemples de réalisation, en se référant aux dessins annexés sur lesquels

  • la figure 1 est une vue en perspective partielle d'une culasse, d'un moteur à combustion interne, pourvu du dispositif de commande d'ouverture et de fermeture des conduits d'admission d'air ,
  • la figure 2 est une vue en coupe suivant la ligne II-II de la culasse de la figure 1 équipée d'un moyen d'actionnement du dispositif en translation,
  • la figure 3 est une vue en perspective du dispositif selon la figure 2 sans la culasse,
  • la figure 4 est une vue similaire à la figure 2, équipée selon une variante d'un moyen d'actionnement en translation,
  • la figure 5 est une vue en perspective du dispositif de commande d'ouverture et de fermeture et de son moyen d'actionnement en rotation, sans la culasse,
  • les figures 6 et 7 sont des vues partielles en perspective d'une culasse et du dispositif selon les lignes VI-VI de la figure 2, respectivement en position d'ouverture et en position de fermeture des conduits d'admission d'air,
  • la figure 8 est une vue de face en coupe d'un conduit d'admission d'air muni d'une variante de réalisation du dispositif de commande, et
  • la figure 9 est une vue en perspective du dispositif de commande selon la figure 8.
The characteristics of the invention mentioned above, as well as others, will appear more clearly on reading the following description of several exemplary embodiments, with reference to the accompanying drawings in which
  • FIG. 1 is a partial perspective view of a cylinder head, of an internal combustion engine, provided with the device for controlling the opening and closing of the air intake ducts,
  • FIG. 2 is a sectional view along line II-II of the cylinder head of FIG. 1 equipped with means for actuating the device in translation,
  • FIG. 3 is a perspective view of the device according to FIG. 2 without the cylinder head,
  • FIG. 4 is a view similar to FIG. 2, fitted in a variant with a means of actuation in translation,
  • FIG. 5 is a perspective view of the opening and closing control device and of its rotary actuation means, without the cylinder head,
  • FIGS. 6 and 7 are partial perspective views of a cylinder head and of the device along the lines VI-VI of FIG. 2, respectively in the open position and in the closed position of the air intake ducts,
  • FIG. 8 is a front view in section of an air intake duct provided with an alternative embodiment of the control device, and
  • FIG. 9 is a perspective view of the control device according to FIG. 8.

On a représenté à la figure 1, une culasse 1 d'un moteur à combustion interne qui est pourvue, de manière classique, de conduits 2 d'admission d'air, par exemple quatre, disposés sur l'une des faces latérales de la culasse 1 et ayant chacun la forme générale d'un coude dont l'un des orifices est débouchant au niveau du plan de joint horizontal P sur lequel repose un carter arbre à cames, non représenté.FIG. 1 shows a cylinder head 1 of an engine with internal combustion which is conventionally provided with air intake ducts 2, for example four, arranged on one of the side faces of the cylinder head 1 and each having the general shape of an elbow, one of the holes of which is emerging at the horizontal joint plane P on which installs a camshaft housing, not shown.

La culasse 1 est munie, avantageusement, d'un dispositif de commande d'ouverture et de fermeture des conduits d'admission d'air qui est constitué, selon la présente invention, d'un boisseau cylindrique 3 disposé transversalement par rapport aux conduits 2 d'air dans un alésage 4, comme visible à la figure 2, réalisé dans la culasse 1 et apte à se déplacer entre une première position d'obturation du conduit P2 et une seconde position d'ouverture P1 dudit conduit sous l'action d'un moyen d'actionnement.The cylinder head 1 is advantageously provided with a device for opening and closing conduits air intake which is constituted, according to this invention of a cylindrical plug 3 arranged transversely to the air ducts 2 in a bore 4, as shown in figure 2, made in the cylinder head 1 and able to move between a first position closing the P2 pipe and a second open position P1 of said conduit under the action of an actuating means.

L'alésage 4 est constitué d'un trou borgne qui est réalisé de manière à traverser transversalement de part et d'autre les conduits d'admission 2, comme visible à la figure 2.The bore 4 consists of a blind hole which is made so as to cross transversely on both sides intake ducts 2, as shown in Figure 2.

Le boisseau 3 est constitué d'un ensemble monopièce réalisé par moulage d'un matériau plastique qui est apte à résister à des températures inférieures ou égales à 100 degrés celsius tel que par exemple du polyamide.Bushel 3 consists of a one-piece assembly produced by molding a plastic material which is suitable for withstand temperatures less than or equal to 100 degrees celsius such as for example polyamide.

Ce boisseau 3 comporte successivement sur sa longueur pour chaque conduit 2 d'une part une première portion 5 formant palier qui présente en coupe transversale la forme générale d'une croix et d'autre part une seconde portion 6 qui est constituée d'une cloison verticale 7 de longueur sensiblement équivalente au diamètre d'un conduit 2. Chacune des portions 5, 6 étant délimitée par deux disques perpendiculaires à l'axe longitudinal M du boisseau 3.This bushel 3 comprises successively along its length for each conduit 2 on the one hand a first portion 5 forming a bearing which has in cross section the shape general of a cross and on the other hand a second portion 6 which consists of a vertical partition 7 of length roughly equivalent to the diameter of a pipe 2. Each portions 5, 6 being delimited by two discs perpendicular to the longitudinal axis M of the plug 3.

On notera que de manière à assurer le détrompage de la cloison verticale 7 des secondes portion 6 du boisseau 3 lors du montage de celui-ci dans l'alésage 4, il est prévu un moyen de détrompage sur l'une des branches formant la croix de l'une des premières portions 5 qui est constitué d'une rainure longitudinale 9, comme visible sur la figure 3.Note that in order to ensure the polarization of the vertical partition 7 of the second portions 6 of the bushel 3 during mounting thereof in bore 4, there is provided a means coding on one of the branches forming the cross of one of the first portions 5 which consists of a groove longitudinal 9, as visible in FIG. 3.

Cette rainure 9 est apte à recevoir l'extrémité d'une vis 10 de guidage qui est fixée sur la culasse 1, comme visible à la figure 2.This groove 9 is capable of receiving the end of a screw 10 guide which is fixed on the cylinder head 1, as visible on the figure 2.

On a représenté sur les figures 2 et 3, des moyens d'actionnement du boisseau 3 permettant à ce-dernier de se déplacer en translation à l'intérieur de l'alésage, suivant une direction représentée par la flèche F.FIGS. 2 and 3 show means actuation of the valve 3 allowing the latter to move in translation inside the bore, following a direction represented by arrow F.

A cet effet, le boisseau 3 cylindrique est pourvu à l'une-de ses extrémités 11 d'une gorge circulaire 12 dans laquelle est monté un joint torique 13 formant ainsi un piston.For this purpose, the cylindrical plug 3 is provided with one of its ends 11 of a circular groove 12 in which is mounted an O-ring 13 thus forming a piston.

Une plaque de fermeture 14 est fixée par l'intermédiaire de vis V sur la culasse 1 de manière à obturer le trou borgne 4 assurant ainsi l'étanchéité du dispositif de commande. Cette plaque 14 est munie d'un orifice 15 de faible diamètre permettant la prise de dépression dans une chambre 16 formée entre la plaque 14 et l'extrémité du boisseau 3 formant piston.A closure plate 14 is fixed via screw V on the cylinder head 1 so as to close the blind hole 4 thus ensuring the tightness of the control device. This plate 14 is provided with a small diameter orifice 15 allowing depression to be taken in a room 16 formed between the plate 14 and the end of the plug 3 forming piston.

Le fonctionnement du dispositif de commande d'ouverture et de fermeture de la présente invention va maintenant être expliqué au regard des figures 6, 7 et 2.Operation of the opening control device and closing the present invention will now be explained with reference to Figures 6, 7 and 2.

La commande d'arrivée d'air dans les conduits d'admission 2 est assurée par le boisseau 3 cylindrique qui est déplaçable en translation entre une première position P1 par exemple d'ouverture, tel que représentée à la figure 6, ou la cloison verticale 7 est disposée au droit des conduits 2 d'admission d'air et une seconde position d'obturation P2, tel que représentée aux figures 7 et 2, ou la première portion 5 du boisseau 3 est disposée au droit des conduits 2 d'admission d'air.The air supply control in the ducts intake 2 is provided by the cylindrical plug 3 which is displaceable in translation between a first position P1 by example of opening, as shown in Figure 6, or the vertical partition 7 is arranged in line with the conduits 2 air intake and a second shutter position P2, such as shown in Figures 7 and 2, or the first portion 5 of bushel 3 is arranged in line with the intake ducts 2 air.

Ce boisseau 3 est actionné par un système à dépression/surpression, en fonction du régime moteur, réalisée dans la chambre 16 formée entre l'extrémité 11 dudit boisseau 3 et la plaque 14 de fermeture qui est commandée par exemple par un calculateur, non représenté.This plug 3 is actuated by a system with depression / overpressure, depending on engine speed, achieved in the chamber 16 formed between the end 11 of said plug 3 and the closure plate 14 which is controlled for example by a computer, not shown.

On notera que le déplacement du boisseau 3 est commandé de manière variable entre les deux positions d'ouverture P1 et de fermeture P2 des conduits 2 d'admission d'air.It will be noted that the displacement of the bushel 3 is variably controlled between the two positions opening P1 and closing P2 of the intake ducts 2 air.

On a représenté à la figure 4, une variante de réalisation du moyen d'actionnement du boisseau 3, dans laquelle la chambre de dépression 16 est remplacée par une capsule à dépression 17 montée en bout de l'alésage 4 permettant le déplacement du boisseau 3 en translation, suivant la flèche F, en fonction des régimes moteur contrôlés par un calculateur, non représenté.There is shown in Figure 4, an alternative embodiment means for actuating the plug 3, in which the vacuum chamber 16 is replaced by a capsule with depression 17 mounted at the end of the bore 4 allowing the displacement of the plug 3 in translation, along arrow F, as a function of the engine speeds controlled by a computer, not shown.

Une autre variante de réalisation du moyen d'actionnement est représentée à la figure 5, dans laquelle le déplacement en translation est remplacé par un déplacement en rotation, flèche R. Ces moyens d'actionnement sont par exemple constitués par une biellette 18 fixée sur l'une des extrémités 11 du boisseau 3 qui est reliée à une capsule 19 à dépression qui est actionnée en fonction des régimes moteur contrôlés par un calculateur.Another alternative embodiment of the means actuation is shown in Figure 5, in which the displacement in translation is replaced by displacement in rotation, arrow R. These actuation means are by example constituted by a link 18 fixed on one of the ends 11 of plug 3 which is connected to a capsule 19 to vacuum which is actuated according to the engine speeds controlled by a computer.

On a représenté aux figures 8 et 9, une autre variante de réalisation du boisseau 3 de commande permettant, avantageusement, de ne pas perturber l'écoulement d'air dans le conduit 2 d'admission d'air. FIGS. 8 and 9 show another variant of realization of the control plug 3 allowing, advantageously, not to disturb the air flow in the air intake duct 2.

La forme du boisseau 3 est réalisée de telle manière que celui-ci soit complètement effacé du conduit d'air en position d'ouverture P1, comme visible à la figure 8.The shape of the plug 3 is made in such a way that this is completely erased from the air duct in position P1, as shown in Figure 8.

Ce boisseau 3 comporte successivement sur sa longueur pour chaque conduit 2 d'une part une première portion 20 formant palier qui présente en coupe transversale la forme générale d'une croix et d'autre part une seconde portion 21 qui est constituée d'une barre cylindrique munie d'un orifice 22 dont l'axe de symétrie longitudinal N est perpendiculaire à l'axe longitudinal M du boisseau 3 et dont le diamètre est équivalent au diamètre du conduit d'admission d'air correspondant, comme visible à la figure 8.This bushel 3 comprises successively along its length for each conduit 2 on the one hand a first portion 20 forming a bearing which has in cross section the shape general of a cross and on the other hand a second portion 21 which consists of a cylindrical bar provided with an orifice 22 whose longitudinal axis of symmetry N is perpendicular to the longitudinal axis M of the plug 3 and whose diameter is equivalent to the diameter of the air intake duct corresponding, as shown in figure 8.

On notera que le boisseau 3 peut être déplacé en translation ou en rotation suivant les moyens d'actionnement décrit ci-dessus ou des moyens équivalents.It will be noted that the plug 3 can be moved in translation or rotation depending on the actuation means described above or equivalent means.

On comprend à la lecture de la description ci-dessus, que le dispositif de commande de la présente invention permet avantageusement un montage plus aisé dans la culasse et d'être peu coûteux.It is understood from reading the description above, that the control device of the present invention allows advantageously easier mounting in the cylinder head and to be inexpensive.

Claims (8)

  1. Cylindrical sliding gate (3), intended for controlling the opening and closing of at least one air intake conduit (2) of a cylinder head (1) of an internal combustion engine, characterised in that it comprises, in succession over its length, for each conduit (2) on the one hand a first portion (20) forming a bearing that is generally cross-shaped in cross section and, on the other hand, a second portion (21) that is constituted by a cylindrical bar provided with an orifice (22), the longitudinal axis of symmetry (N) of which is perpendicular to the longitudinal axis (M) of said sliding gate (3) and the diameter of which is equivalent to the diameter of the corresponding air intake conduit (2).
  2. Sliding gate according to Claim 1, characterised in that it is constituted by a single-part assembly produced by moulding a plastic material that is capable of resisting temperatures below or equal to 100 degrees Celsius, such as for example polyamide.
  3. Sliding gate according to Claim 1 or 2, characterised in that it comprises, on one of the portions (20) forming a bearing, a fool-proofing means (9, 10) for the sliding gate (3) in the bore hole (4) of said air intake conduit (2) making it possible to ensure the correct position of each of said second portions (21) in line with said conduit (2).
  4. Sliding gate according to Claim 3, characterised in that the fool-proofing means is constituted by a longitudinal slot (9) that is capable of receiving the end of a guide screw (10) fixed to the cylinder head (1).
  5. Internal combustion engine comprising a cylinder head with at least one air intake conduit (2) in which there is arranged transversely, in a bore hole (4), the sliding gate (3) according to any one of the preceding claims as a device for controlling the opening and closing of said passage.
  6. Engine according to Claim 5, in which the sliding gate (3) is capable of being displaced in translation between a first blocking position (P2) and a second open position (P1) by the action of an actuating means integral with the engine, characterised in that the actuation means is constituted by a vacuum chamber (16) formed between one of the ends (11) of the sliding gate (3) and a closing plate (14), which is provided with an orifice (15) forming a vacuum system controllable by a calculator as a function of engine speeds.
  7. Engine according to Claim 5, in which the sliding gate (3) is capable of being displaced in translation between a first blocking position (P2) and a second open position (P1) by the action of an actuation means integral with the engine, characterised in that the actuation means is constituted by a vacuum capsule (17) mounted at the end of the bore hole (4).
  8. Engine according to Claim 5, in which the sliding gate (3) is capable of being displaced in rotation between a first blocking position (P2) and a second open position (P1) by the action of an actuation means integral with the engine, characterised in that the actuation means is constituted by a link (18) fixed to one of the ends (11) of the sliding gate (3) and which is connected to a vacuum capsule (19) actuated by a calculator as a function of engine speeds.
EP99901637A 1998-01-29 1999-01-28 Device for controlling the opening and closing of at least an internal combustion engine cylinder head air conduit Expired - Lifetime EP0970302B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9800992A FR2774125B1 (en) 1998-01-29 1998-01-29 CONTROL DEVICE FOR OPENING AND CLOSING AT LEAST ONE AIR DUCT OF A CYLINDER HEAD OF AN INTERNAL COMBUSTION ENGINE
FR9800992 1998-01-29
PCT/FR1999/000160 WO1999039091A1 (en) 1998-01-29 1999-01-28 Device for controlling the opening and closing of at least an internal combustion engine cylinder head air conduit

Publications (2)

Publication Number Publication Date
EP0970302A1 EP0970302A1 (en) 2000-01-12
EP0970302B1 true EP0970302B1 (en) 2002-12-11

Family

ID=9522330

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99901637A Expired - Lifetime EP0970302B1 (en) 1998-01-29 1999-01-28 Device for controlling the opening and closing of at least an internal combustion engine cylinder head air conduit

Country Status (8)

Country Link
US (1) US6332449B1 (en)
EP (1) EP0970302B1 (en)
JP (1) JP2001518166A (en)
BR (1) BR9904803A (en)
DE (1) DE69904400T2 (en)
ES (1) ES2189381T3 (en)
FR (1) FR2774125B1 (en)
WO (1) WO1999039091A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2798426B1 (en) * 1999-09-10 2002-09-13 Renault VARIABLE INTAKE DEVICE FOR A HEAT ENGINE AND A BLOCK FOR SUCH A DEVICE
DE19944108A1 (en) * 1999-09-15 2001-03-22 Mann & Hummel Filter Shift drum
DE10119281A1 (en) * 2001-04-20 2002-10-24 Mann & Hummel Filter Switching assembly for closing suction ducts of an intake device with this switching assembly
FR2824360B1 (en) * 2001-05-02 2003-09-12 Solvay DEVICE FOR SEALING AIR INTAKE DUCTS OF AN ENGINE
DE202006018186U1 (en) * 2006-11-29 2008-04-10 Mann + Hummel Gmbh Control shaft in an internal combustion engine
JP6385407B2 (en) * 2016-09-22 2018-09-05 本田技研工業株式会社 Rotary throttle device for internal combustion engine

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1241191A (en) * 1968-09-12 1971-07-28 Birmingham Small Arms Co Ltd Improvements in or relating to internal combustion engines
JPS59126031A (en) * 1983-01-07 1984-07-20 Yamaha Motor Co Ltd Intake apparatus for internal-combustion engine
JPS6193228A (en) * 1984-10-12 1986-05-12 Mitsubishi Motors Corp Idle mechanism for engine using slide valve
GB2165886A (en) * 1984-10-23 1986-04-23 Ford Motor Co An inlet manifold for an i c engine
GB2211889A (en) * 1987-11-05 1989-07-12 Keith Gordon Hall Engine throttle valve
US4864980A (en) * 1987-11-02 1989-09-12 Brunswick Corporation Exhaust valve throttling mechanism for two-stroke engine
US5081961A (en) * 1989-08-01 1992-01-21 Paul Marius A Internal combustion engine with rotary exhaust control
DE59107147D1 (en) * 1990-10-11 1996-02-08 Wolfram Willeke Internal combustion engine with a cylindrical slide
US5069175A (en) * 1990-10-12 1991-12-03 Ford Motor Company Charge intake system for a multi-intake valve per cylinder engine
JPH07224668A (en) * 1994-02-07 1995-08-22 Sanshin Ind Co Ltd Variable compressing mechanism of two-cycle engine
DE19544243A1 (en) * 1994-12-10 1996-06-13 Volkswagen Ag Intake manifold for internal combustion engine
US5454357A (en) * 1994-12-12 1995-10-03 General Motors Corporation Slide port valve for an internal combustion engine
DE19503771A1 (en) * 1995-02-04 1996-08-08 Mann & Hummel Filter Suction module

Also Published As

Publication number Publication date
FR2774125A1 (en) 1999-07-30
EP0970302A1 (en) 2000-01-12
US6332449B1 (en) 2001-12-25
ES2189381T3 (en) 2003-07-01
FR2774125B1 (en) 2000-03-31
BR9904803A (en) 2000-05-23
DE69904400T2 (en) 2003-10-09
WO1999039091A1 (en) 1999-08-05
DE69904400D1 (en) 2003-01-23
JP2001518166A (en) 2001-10-09

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