EP0284466A1 - Exhaust pipes connecting device and internal combustion engine equipped with this device - Google Patents

Exhaust pipes connecting device and internal combustion engine equipped with this device Download PDF

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Publication number
EP0284466A1
EP0284466A1 EP88400463A EP88400463A EP0284466A1 EP 0284466 A1 EP0284466 A1 EP 0284466A1 EP 88400463 A EP88400463 A EP 88400463A EP 88400463 A EP88400463 A EP 88400463A EP 0284466 A1 EP0284466 A1 EP 0284466A1
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EP
European Patent Office
Prior art keywords
conduits
piece
combustion engine
spacer
internal combustion
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.)
Granted
Application number
EP88400463A
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German (de)
French (fr)
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EP0284466B1 (en
Inventor
Gabriel Laine
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
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Automobiles Peugeot SA
Automobiles Citroen SA
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Application filed by Automobiles Peugeot SA, Automobiles Citroen SA filed Critical Automobiles Peugeot SA
Publication of EP0284466A1 publication Critical patent/EP0284466A1/en
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Publication of EP0284466B1 publication Critical patent/EP0284466B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08—Other arrangements or adaptations of exhaust conduits

Definitions

  • the present invention essentially relates to a device for connecting conduits for hot gases leaving, for example, an internal combustion engine.
  • connection thus produced can be carried out by cutting and welding beforehand the ends of the conduits, but the operation is delicate and implies that the conduits deviate near their junction in order to be able to have a weld bead between them.
  • the juxtaposed ends have excessive heating, because they have no contact with the ambient air, so that expansions can occur in the long term causing cracks and even ruptures of the conduits.
  • the object of the present invention is to remedy the above drawbacks in particular by proposing a connection device which prevents excessive heating and any deterioration of the juxtaposed conduits, even after long use.
  • the subject of the invention is a device for connecting exhaust gas conduits leaving, for example, an internal combustion engine, and in which the ends of the conduits are juxtaposed and shaped so that the assembly thus formed can be fitted into the end of a pipe or the like, characterized in that a hollow intermediate piece forming a spacer is interposed between the ends of the conduits and remains in contact over its entire extent with said ends, this piece comprising a bottom of the end of the nozzle receiving the ends of the conduits.
  • the aforementioned hollow part opens on the side opposite to the end piece.
  • At least two pipes are provided which open into the aforementioned hollow part to ensure a forced air flow therein, in which case the end of the hollow part opposite to that situated on the side of the tip can be optionally closed.
  • the aforementioned hollow part has substantially the shape of a flattened tube or a star with at least three branches.
  • the aforementioned hollow part is made of folded and welded sheet metal and is assembled by welding with the exhaust ducts.
  • the invention also relates to an internal combustion engine equipped with a connection device meeting one and / or the other of the above characteristics.
  • connection according to this invention is carried out between a plurality of conduits or tubes 1, connected on one side to an engine cylinder head by means of a fixing flange 2 and, from the on the other hand, to a pipe 3 which can be connected to a silencer (not shown) and comprising a nozzle 4.
  • the endpiece 4 is fitted on the parallel ends and juxtaposed la of the exhaust conduits 1.
  • a hollow intermediate piece 5 forming a spacer is interposed between the juxtaposed and substantially parallel ends of the conduits 1 and remains in contact over its entire extent with said ends, this spacer 5 comprising a bottom 6 on the side of the end piece 4, as seen in particular in FIGS. 2, 4, 7 and 8.
  • the hollow part or spacer 5 is closed at its end situated on the side of the pipe 3 fitted on the ends 1a conduits or tubes 1.
  • the hollow intermediate piece 5 has the shape of a flattened tube with two substantially parallel walls 6a which are applied respectively on the flat portions facing the ends 1a of two tubes 1.
  • the end forming the bottom 6 of the hollow piece or spacer 5 located on the side of the end piece 4 of the pipe 3 is profiled and welded, while the opposite end of this piece opens out at 6b on the side opposite the pipe 3, it that is to say in the interval 7 between the two conduits 1.
  • the hollow part or spacer 5 has, in cross section, the shape of a star with three branches 8 against which the ends 1a of three conduits are applied.
  • the three hollow branches of the part 5 are closed at their end situated on the side of the end piece 4 of the pipe 3.
  • the hollow intermediate piece 5 still has substantially, in cross section, the shape of a star with three branches. But here the ends 1a of the conduits 1 have a circular section, so that said ends bear on concave faces 9 forming the three hollow branches of the part 5, while, in the case of FIG. 5, the ends 1a of the conduits 1 have flat parts 10 applying to the flat branches of the star constituting the hollow part 5.
  • the hollow intermediate piece 5 has in cross section the shape of a star with four branches, the end 6 of which is located on the side of the end piece 4 of the pipe 3 is closed, as can be seen in FIGS. 7 and 8.
  • conduits 1 are applied against the four branches of the hollow spacer 5.
  • the end 6b can be closed by welding, in which case the pipes 11 and 12 are connected to a system (not shown) causing an air flow, this system using for example the aforementioned dynamic effect or a pulser associated with the motor.
  • the assembly is carried out by fitting and welding the endpiece or nozzle 4 on the ends 1a of the conduits or tubes 1 previously welded on the hollow spacer 5.
  • the various welds can easily performed thanks to good accessibility to the areas to receive a weld bead.
  • connection device with hollow spacer which allows good heat exchange between the respective ends 1a conduits 1 and the ambient air thanks to the recess opening into the interior of this spacer, and possibly, thanks to the flow of air forced into this recess. Consequently, such a connection device does not require the use of expensive metals since it does not undergo excessive heating.
  • the hollow spacer piece on which the ends 1a of the conduits or tubes 1 are applied will advantageously allow free internal radial deformations, materialized by the arrows F, of these ends, which expansions result of course from the temperature of the hot gases. evacuated from the engine by the conduits 1. This means that any cracking or deterioration of the conduits 1 and of their ends 1a will be avoided.
  • pipes such as 11 and 12 opening into the hollow spacer 5 can be provided on a spacer comprising an end 6b which can be open or not, and that the spacer 5 has the form of a tube flattened or shaped like a three-pointed star, four or more branches.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Abstract

The present invention relates to a device for the connection of hot-gas exhaust conduits. This device is characterised by ends (1a) of conduits (1) which are juxtaposed and shaped in such a way that the assembly so formed can be fitted into the endpiece (4) of a pipe, whilst a hollow intermediate piece (5) forming a spacer is interposed between the ends (1a) of the conduits (1) and remains in contact with these ends over its entire extent, the piece (5) having a bottom (6) located on the same side as the endpiece (4) of the pipe (3). This device makes it possible, for example, to connect exhaust conduits for burnt gases escaping from an internal-combustion engine. <IMAGE>

Description

La présente invention a essentiellement pour objet un dispositif de raccordement de conduits pour gaz chauds sortant par exemple d'un moteur à combustion interne.The present invention essentially relates to a device for connecting conduits for hot gases leaving, for example, an internal combustion engine.

Elle vise également un moteur à combustion interne équipé de ce dispositif.It also relates to an internal combustion engine equipped with this device.

Il est connu de juxtaposer les extrémités des conduits d'échappement reliés à la culasse d'un moteur et de conformer ces extrémités de telle façon que l'ensemble puisse être emmanché dans l'embout d'un tuyau comportant par exemple un silencieux.It is known to juxtapose the ends of the exhaust conduits connected to the cylinder head of an engine and to conform these ends so that the assembly can be fitted into the end of a pipe comprising for example a silencer.

Le raccordement ainsi réalisé peut s'effectuer par découpage et soudage préalables des extrémités des conduits, mais l'opération est délicate et implique que les conduits s'écartent près de leur jonction pour pouvoir disposer un cordon de soudure entre eux.The connection thus produced can be carried out by cutting and welding beforehand the ends of the conduits, but the operation is delicate and implies that the conduits deviate near their junction in order to be able to have a weld bead between them.

On peut également réaliser une juxtaposition parallèle des extrémités des conduits, de telle façon que le contour de l'ensemble qu'elles constituent une fois juxtaposées soit emmanché juste ou à force dans l'embout du tuyau, mais une telle solution présente des inconvénients.One can also realize a parallel juxtaposition of the ends of the conduits, so that the outline of the assembly which they constitute once juxtaposed is just or force fitted into the end of the pipe, but such a solution has drawbacks.

En effet, les extrémités juxtaposées présentent un échauffement excessif, car elles n'ont aucun contact avec l'air ambiant, de sorte qu'il peut se produire des dilatations provoquant à la longue des fissurations et même des ruptures des conduits.Indeed, the juxtaposed ends have excessive heating, because they have no contact with the ambient air, so that expansions can occur in the long term causing cracks and even ruptures of the conduits.

Il en résulte que l'on doit utiliser pour les conduits des métaux nobles résistant aux températures élevées, ce qui est fort coûteux.As a result, noble metals resistant to high temperatures must be used for the conduits, which is very expensive.

La présente invention a pour but de remédier notamment aux inconvénients ci-dessus en proposant un dispositif de raccordement qui évite tout échauffement excessif et toute détérioration des conduits juxtaposés, même après un long usage.The object of the present invention is to remedy the above drawbacks in particular by proposing a connection device which prevents excessive heating and any deterioration of the juxtaposed conduits, even after long use.

A cet effet, l'invention a pour objet un dispositif de raccordement de conduits d'échappement des gaz sortant par exemple d'un moteur à combustion interne, et dans lequel les extrémités des conduits sont juxtaposées et conformées de telle façon que l'ensemble ainsi formé puisse être emmanché dans l'embout d'un tuyau ou analogue, caractérisé en ce qu'une pièce intermédiaire creuse formant entretoise est interposée entre les extrémités des conduits et demeure en contact sur toute son étendue avec lesdites extrémités, cette pièce comportant un fond du côté de l'embout recevant les extrémités des conduits.To this end, the subject of the invention is a device for connecting exhaust gas conduits leaving, for example, an internal combustion engine, and in which the ends of the conduits are juxtaposed and shaped so that the assembly thus formed can be fitted into the end of a pipe or the like, characterized in that a hollow intermediate piece forming a spacer is interposed between the ends of the conduits and remains in contact over its entire extent with said ends, this piece comprising a bottom of the end of the nozzle receiving the ends of the conduits.

Suivant une autre caractéristique de l'invention, la pièce creuse précitée débouche du côté opposé à l'embout.According to another characteristic of the invention, the aforementioned hollow part opens on the side opposite to the end piece.

Selon encore une autre caractéristique de l'invention, on prévoit au moins deux conduites débouchant dans la pièce creuse précitée pour y assurer un écoulement d'air forcé, dans quel cas l'extrémité de la pièce creuse opposée à celle située du côté de l'embout peut être éventuellement obturée.According to yet another characteristic of the invention, at least two pipes are provided which open into the aforementioned hollow part to ensure a forced air flow therein, in which case the end of the hollow part opposite to that situated on the side of the tip can be optionally closed.

On précisera encore ici que la pièce creuse précitée présente sensiblement la forme d'un tube aplati ou d'une étoile à au moins trois branches.It will also be specified here that the aforementioned hollow part has substantially the shape of a flattened tube or a star with at least three branches.

La pièce creuse précitée est réalisée en tôle pliée et soudée et est assemblée par soudage avec les conduits d'échappement.The aforementioned hollow part is made of folded and welded sheet metal and is assembled by welding with the exhaust ducts.

L'invention vise également un moteur à combustion interne équipé d'un dispositif de raccordement répondant à l'une et/ou l'autre des caractéristiques susmentionnées.The invention also relates to an internal combustion engine equipped with a connection device meeting one and / or the other of the above characteristics.

Mais d'autres caractéristiques et 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 est une vue schématique et en perspective d'un collecteur d'échappement du type concerné par la présente invention ;
  • Les figures 2, 3 et 4 illustrent respectivement en coupe axiale, en section suivant la ligne III-III de la figure 2, et en perspective, un premier mode de réalisation de raccordement de deux conduits d'échappement avec un embout de tuyau ;
  • Les figures 5 et 6 illustrent respectivement en section un deuxième et un troisième modes de réalisation de raccordement de trois conduits d'échappement ;
  • La figure 7 est une vue en coupe axiale d'un quatrième mode de réalisation de raccordement pour quatre conduits d'échappement ;
  • La figure 8 est une vue schématique et en perspective de ce raccordement ; et
  • La figure 9 est une section suivant la ligne IX-IX de la figure 7.
However, other characteristics and 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 is a schematic perspective view of an exhaust manifold of the type concerned by the present invention;
  • Figures 2, 3 and 4 respectively illustrate in axial section, in section along line III-III of Figure 2, and in perspective, a first embodiment of connection of two exhaust ducts with a pipe end;
  • Figures 5 and 6 respectively illustrate in section a second and a third embodiment of connection of three exhaust ducts;
  • Figure 7 is an axial sectional view of a fourth embodiment of connection for four exhaust ducts;
  • Figure 8 is a schematic perspective view of this connection; and
  • Figure 9 is a section along line IX-IX of Figure 7.

Comme on le voit sur la figure 1, le raccordement suivant cette invention est effectué entre une pluralité de conduits ou tubes 1, reliés d'un côté à une culasse de moteur par l'intermédiaire d'une bride de fixation 2 et, de l'autre côté, à un tuyau 3 pouvant être raccordé à un silencieux (non représenté) et comportant un embout 4.As can be seen in FIG. 1, the connection according to this invention is carried out between a plurality of conduits or tubes 1, connected on one side to an engine cylinder head by means of a fixing flange 2 and, from the on the other hand, to a pipe 3 which can be connected to a silencer (not shown) and comprising a nozzle 4.

Plus précisément, l'embout 4 est emmanché sur les extrémités parallèles et juxtaposées la des conduits d'échappement 1.More precisely, the endpiece 4 is fitted on the parallel ends and juxtaposed la of the exhaust conduits 1.

Dans tous les modes de réalisation représentés aux figures 2 à 9, une pièce intermédiaire creuse 5 formant entretoise est interposée entre les extrémités juxtaposées et sensiblement parallèles la des conduits 1 et demeure en contact sur toute son étendue avec lesdites extrémités, cette entretoise 5 comportant un fond 6 du côté de l'embout 4, comme on le voit notamment sur les figures 2, 4, 7 et 8. Autrement dit, la pièce ou entretoise creuse 5 est obturée à son extrémité située du côté du tuyau 3 emmanché sur les extrémités 1a des conduits ou tubes 1.In all of the embodiments shown in FIGS. 2 to 9, a hollow intermediate piece 5 forming a spacer is interposed between the juxtaposed and substantially parallel ends of the conduits 1 and remains in contact over its entire extent with said ends, this spacer 5 comprising a bottom 6 on the side of the end piece 4, as seen in particular in FIGS. 2, 4, 7 and 8. In other words, the hollow part or spacer 5 is closed at its end situated on the side of the pipe 3 fitted on the ends 1a conduits or tubes 1.

Suivant le mode de réalisation représenté sur les figures 2 à 4, la pièce intermédiaire creuse 5 présente la forme d'un tube aplati avec deux parois sensiblement parallèles 6a qui s'appliquent respectivement sur les portions plates en vis-à-vis des extrémités 1a de deux tubes 1.According to the embodiment shown in Figures 2 to 4, the hollow intermediate piece 5 has the shape of a flattened tube with two substantially parallel walls 6a which are applied respectively on the flat portions facing the ends 1a of two tubes 1.

L'extrémité formant fond 6 de la pièce ou entretoise creuse 5 située du côté de l'embout 4 du tuyau 3 est profilée et soudée, tandis que l'extrémité opposée de cette pièce débouche en 6b du côté opposé au tuyau 3, c'est-à-dire dans l'intervalle 7 entre les deux conduits 1.The end forming the bottom 6 of the hollow piece or spacer 5 located on the side of the end piece 4 of the pipe 3 is profiled and welded, while the opposite end of this piece opens out at 6b on the side opposite the pipe 3, it that is to say in the interval 7 between the two conduits 1.

Dans le deuxième mode de réalisation illustré par la figure 5, la pièce ou entretoise creuse 5 présente, en section transversale, la forme d'une étoile à trois branches 8 contre lesquelles s'appliquent les extrémités 1a de trois conduits.In the second embodiment illustrated in FIG. 5, the hollow part or spacer 5 has, in cross section, the shape of a star with three branches 8 against which the ends 1a of three conduits are applied.

Comme décrit précédemment, les trois branches creuses de la pièce 5 sont fermées à leur extrémité située du côté de l'embout 4 du tuyau 3.As described above, the three hollow branches of the part 5 are closed at their end situated on the side of the end piece 4 of the pipe 3.

Suivant un troisième mode de réalisation visible sur la figure 6, la pièce intermédiaire creuse 5 présente encore sensiblement , en section transversale, la forme d'une étoile à trois branches. Mais ici les extrémités 1a des conduits 1 présentent une section circulaire, de sorte que lesdites extrémités prennent appui sur des faces concaves 9 formant les trois branches creuses de la pièce 5, alors que, dans le cas de la figure 5, les extrémités 1a des conduits 1 comportent des parties planes 10 s'appliquant sur les branches plates de l'étoile constituant la pièce creuse 5.According to a third embodiment visible in FIG. 6, the hollow intermediate piece 5 still has substantially, in cross section, the shape of a star with three branches. But here the ends 1a of the conduits 1 have a circular section, so that said ends bear on concave faces 9 forming the three hollow branches of the part 5, while, in the case of FIG. 5, the ends 1a of the conduits 1 have flat parts 10 applying to the flat branches of the star constituting the hollow part 5.

Dans le mode de réalisation visible sur les figures 7 à 9, la pièce intermédiaire creuse 5 présente en section transversale la forme d'une étoile à quatre branches dont l'extrémité 6 située du côté de l'embout 4 du tuyau 3 est fermée, comme on le voit bien sur les figures 7 et 8.In the embodiment visible in FIGS. 7 to 9, the hollow intermediate piece 5 has in cross section the shape of a star with four branches, the end 6 of which is located on the side of the end piece 4 of the pipe 3 is closed, as can be seen in FIGS. 7 and 8.

Selon ce mode de réalisation, quatre extrémités 1a de conduits 1 viennent s'appliquer contre les quatre branches de l'entretoise creuse 5.According to this embodiment, four ends 1a of conduits 1 are applied against the four branches of the hollow spacer 5.

On peut prévoir deux conduites 11, 12 qui sont bien visibles sur la figure 9 et qui débouchent à l'intérieur de la pièce ou entretoise creuse 5. Ces conduites 11, 12 permettent un écoulement d'air forcé à l'intérieur de la pièce creuse 5. Plus précisément, les conduites 11, 12 permettent l'évacuation de l'air qui entre dans la pièce creuse 5 par son extrémité 6b opposée au tuyau 3, notamment par effet dynamique dû au déplacement du véhicule entraîné par le moteur.It is possible to provide two pipes 11, 12 which are clearly visible in FIG. 9 and which open out inside the room or hollow spacer 5. These pipes 11, 12 allow a forced air flow inside the room hollow 5. More specifically, the pipes 11, 12 allow the evacuation of the air which enters the hollow part 5 through its end 6b opposite the pipe 3, in particular by dynamic effect due to the movement of the vehicle driven by the engine.

Comme cela est montré en 13 sur la figure 7, l'extrémité 6b peut être fermée par soudage, dans quel cas les conduites 11 et 12 sont reliées à un système (non représenté) provoquant un écoulement d'air, ce système utilisant par exemple l'effet dynamique susmentionné ou un pulseur associé au moteur.As shown at 13 in Figure 7, the end 6b can be closed by welding, in which case the pipes 11 and 12 are connected to a system (not shown) causing an air flow, this system using for example the aforementioned dynamic effect or a pulser associated with the motor.

Dans tous les modes de réalisation représentés sur les figures, l'assemblage s'effectue par emmanchement et soudage de l'embout ou buse 4 sur les extrémités 1a des conduits ou tubes 1 préalablement soudées sur l'entretoise creuse 5. Les divers soudages peuvent s'effectuer aisément grâce à une bonne accessibilité aux zones devant recevoir un cordon de soudure.In all the embodiments shown in the figures, the assembly is carried out by fitting and welding the endpiece or nozzle 4 on the ends 1a of the conduits or tubes 1 previously welded on the hollow spacer 5. The various welds can easily performed thanks to good accessibility to the areas to receive a weld bead.

On a donc réalisé suivant l'invention un dispositif de raccordement à entretoise creuse qui permet un bon échange thermique entre les extrémités respectives 1a des conduits 1 et l'air ambiant grâce à l'évidement débouchant à l'intérieur de cette entretoise, et éventuellement, grâce à l'écoulement d'air forcé dans cet évidement. Par conséquent, un tel dispositif de raccordement ne nécessite pas l'utilisation de métaux coûteux puisqu'il ne subit pas d'échauffement excessif. En outre, la pièce entretoise creuse sur laquelle viennent s'appliquer les extrémités 1a des conduits ou tubes 1 permettra avantageusement les libres déformations radiales internes, matérialisées par les flèches F, de ces extrémités, lesquelles dilatations résultent bien sûr de la température des gaz chauds évacués du moteur par les conduits 1. C'est dire qu'on évitera toute fissuration ou détérioration des conduits 1 et de leurs extrémités 1a.There is therefore produced according to the invention a connection device with hollow spacer which allows good heat exchange between the respective ends 1a conduits 1 and the ambient air thanks to the recess opening into the interior of this spacer, and possibly, thanks to the flow of air forced into this recess. Consequently, such a connection device does not require the use of expensive metals since it does not undergo excessive heating. In addition, the hollow spacer piece on which the ends 1a of the conduits or tubes 1 are applied will advantageously allow free internal radial deformations, materialized by the arrows F, of these ends, which expansions result of course from the temperature of the hot gases. evacuated from the engine by the conduits 1. This means that any cracking or deterioration of the conduits 1 and of their ends 1a will be avoided.

L'invention n'est nullement limitée aux modes de réalisation décrits et illustrés qui n'ont été donnés qu'à titre d'exemple.The invention is in no way limited to the embodiments described and illustrated which have been given only by way of example.

C'est ainsi que des conduites telles que 11 et 12 débouchant dans l'entretoise creuse 5 peuvent être prévues sur une entretoise comprenant une extrémité 6b qui peut être ouverte ou non, et cela que l'entretoise 5 présente la forme d'un tube aplati ou la forme d'une étoile à trois branches, quatre branches ou plus.Thus, pipes such as 11 and 12 opening into the hollow spacer 5 can be provided on a spacer comprising an end 6b which can be open or not, and that the spacer 5 has the form of a tube flattened or shaped like a three-pointed star, four or more branches.

L'invention comprend donc tous les équivalents techiques des moyens décrits ainsi que leurs combinaisons si celles-ci sont effectuées suivant son esprit.The invention therefore includes all the technical equivalents of the means described and their combinations if these are carried out according to the spirit.

Claims (5)

1. Dispositif de raccordement de conduits pour gaz chauds sortant par exemple d'un moteur à combustion interne, et dans lequel les extrémités (1a) des conduits (1) sont juxtaposées et conformées de façon que l'ensemble ainsi formé puisse être emmanché dans l'embout (4) d'un tuyau ou analogue (3), tandis qu'une pièce intermédiaire formant entretoise (5) est interposée entre les extrémités des conduits (1) et demeure en contact avec elles, caractérisé en ce que ladite pièce intermédiaire formant entretoise (5) est creuse et comporte d'une part un fond (6) du côté de l'embout (4) et d'autre part une extrémité débouchante (6b) située du côté opposé à l'embout (4).1. A device for connecting conduits for hot gases leaving, for example, an internal combustion engine, and in which the ends (1a) of the conduits (1) are juxtaposed and shaped so that the assembly thus formed can be fitted into the end piece (4) of a pipe or the like (3), while an intermediate piece forming a spacer (5) is interposed between the ends of the conduits (1) and remains in contact with them, characterized in that said piece intermediate forming spacer (5) is hollow and comprises on the one hand a bottom (6) on the side of the end piece (4) and on the other hand a through end (6b) located on the side opposite to the end piece (4) . 2. Dispositif selon la revendication 1, caractérisé par au moins deux conduites (11, 12) débouchant dans la pièce creuse précitée (5) pour y assurer un écoulement d'air forcé, dans quel cas l'extrémité de la pièce creuse (5) opposée à celle située du côté de l'embout (4) peut être éventuellement obturée.2. Device according to claim 1, characterized by at least two pipes (11, 12) opening into the aforementioned hollow part (5) to ensure a forced air flow, in which case the end of the hollow part (5 ) opposite to that located on the end of the end piece (4) can possibly be closed. 3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que la pièce creuse précitée (5) présente sensiblement la forme d'un tube aplati ou d'une étoile à au moins trois branches.3. Device according to claim 1 or 2, characterized in that the aforementioned hollow part (5) has substantially the shape of a flattened tube or a star with at least three branches. 4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que la pièce creuse précitée (5) est réalisée en tôle pliée et soudée et est assemblée par soudage avec les conduits d'échappement (1).4. Device according to one of claims 1 to 3, characterized in that the aforementioned hollow part (5) is made of folded and welded sheet metal and is assembled by welding with the exhaust ducts (1). 5. Moteur à combustion interne équipé d'un dispositif de raccordement selon l'une quelconque des revendications précédentes.5. Internal combustion engine equipped with a connection device according to any one of the preceding claims.
EP88400463A 1987-03-09 1988-02-29 Exhaust pipes connecting device and internal combustion engine equipped with this device Expired - Lifetime EP0284466B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8703177A FR2612252B1 (en) 1987-03-09 1987-03-09 DEVICE FOR CONNECTING EXHAUST PIPES AND INTERNAL COMBUSTION ENGINE PROVIDED WITH THIS DEVICE
FR8703177 1987-03-09

Publications (2)

Publication Number Publication Date
EP0284466A1 true EP0284466A1 (en) 1988-09-28
EP0284466B1 EP0284466B1 (en) 1991-07-24

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Application Number Title Priority Date Filing Date
EP88400463A Expired - Lifetime EP0284466B1 (en) 1987-03-09 1988-02-29 Exhaust pipes connecting device and internal combustion engine equipped with this device

Country Status (3)

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EP (1) EP0284466B1 (en)
DE (1) DE3863808D1 (en)
FR (1) FR2612252B1 (en)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0380407A1 (en) * 1989-01-25 1990-08-01 Automobiles Peugeot Exhaust manifold for a supercharged internal-combustion engine
WO1992003639A1 (en) * 1990-08-13 1992-03-05 Flowmaster, Inc. Header assembly for internal combustion engine and method
WO1993016272A1 (en) * 1992-02-17 1993-08-19 Alexander Chabry Internal combustion engine intake and exhaust systems
EP0733789A2 (en) * 1995-03-23 1996-09-25 Mercedes-Benz Ag Fan-shaped exhaust manifold for multi-cylinder internal combustion engines
EP0736678A2 (en) * 1995-04-03 1996-10-09 Toyota Jidosha Kabushiki Kaisha Structure of an exhaust manifold branch collecting portion
EP0733788A3 (en) * 1995-02-24 1996-10-23 Volkswagen Aktiengesellschaft Manifold for an internal combustion engine
EP0744537A1 (en) * 1995-05-22 1996-11-27 Dr.Ing.h.c. F. Porsche Aktiengesellschaft Exhaust pipe for internal combustion engines
DE19526084A1 (en) * 1995-07-18 1997-01-23 Porsche Ag Exhaust manifold
US5787709A (en) * 1995-12-26 1998-08-04 Toyota Jidosha Kabushiki Kaisha Exhaust manifold
US5875434A (en) * 1995-03-15 1999-02-23 Fujitsu Limited System for picking articles
DE10144795A1 (en) * 2001-09-12 2003-04-03 Daimler Chrysler Ag Exhaust gas manifold has exit flange side ends of individual tubes against inner wall of exit flange
EP1199450A3 (en) * 2000-10-16 2003-07-23 J. Eberspächer GmbH & Co. KG Exhaust manifold
US6634171B1 (en) * 1999-10-27 2003-10-21 Banks, Iii Gale C. Exhaust scavenging system
US6959543B2 (en) * 2001-09-01 2005-11-01 Ing. H.C.F. Porsche Ag Exhaust gas manifold of an exhaust system for an internal combustion engine
EP1344912A3 (en) * 2002-03-13 2006-01-18 Yumex Corporation Structure of an exhaust manifold branch collecting portion
US8468812B1 (en) 2011-10-20 2013-06-25 Gale C. Banks, III Exhaust scavenging system
CN104690108A (en) * 2015-03-30 2015-06-10 西峡县内燃机进排气管有限责任公司 Manufacturing method for tubular stainless steel manifold

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DE4228187C2 (en) * 1992-08-25 1995-04-27 Hde Metallwerk Gmbh Exhaust manifold for internal combustion engines
DE19722725A1 (en) * 1997-05-30 1998-12-03 Zeuna Staerker Kg Pipe merging
DE102016111336A1 (en) 2016-06-21 2017-12-21 Tenneco Gmbh housing connection

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Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0380407A1 (en) * 1989-01-25 1990-08-01 Automobiles Peugeot Exhaust manifold for a supercharged internal-combustion engine
WO1992003639A1 (en) * 1990-08-13 1992-03-05 Flowmaster, Inc. Header assembly for internal combustion engine and method
US5216883A (en) * 1990-08-13 1993-06-08 Flowmaster, Inc. Header assembly for internal combustion engine and method
AU660150B2 (en) * 1990-08-13 1995-06-15 Flowmaster, Inc. Header assembly for internal combustion engine and method
WO1993016272A1 (en) * 1992-02-17 1993-08-19 Alexander Chabry Internal combustion engine intake and exhaust systems
US5785027A (en) * 1992-02-17 1998-07-28 Chabry; Alexander Internal combustion engine intake and exhaust systems
US5595062A (en) * 1992-02-17 1997-01-21 Chabry; Alexander Internal combustion engine intake and exhaust systems
EP0733788A3 (en) * 1995-02-24 1996-10-23 Volkswagen Aktiengesellschaft Manifold for an internal combustion engine
US5875434A (en) * 1995-03-15 1999-02-23 Fujitsu Limited System for picking articles
EP0733789A2 (en) * 1995-03-23 1996-09-25 Mercedes-Benz Ag Fan-shaped exhaust manifold for multi-cylinder internal combustion engines
EP0733789A3 (en) * 1995-03-23 1996-10-30 Mercedes-Benz Ag Fan-shaped exhaust manifold for multi-cylinder internal combustion engines
EP1039107A2 (en) * 1995-04-03 2000-09-27 Toyota Jidosha Kabushiki Kaisha Structure of an exhaust manifold branch collecting portion
EP1039107A3 (en) * 1995-04-03 2005-02-16 Toyota Jidosha Kabushiki Kaisha Structure of an exhaust manifold branch collecting portion
US5727386A (en) * 1995-04-03 1998-03-17 Toyota Jidosha Kabushiki Kaisha Structure of an exhaust manifold branch collecting portion
EP0736678A2 (en) * 1995-04-03 1996-10-09 Toyota Jidosha Kabushiki Kaisha Structure of an exhaust manifold branch collecting portion
EP1039106A2 (en) * 1995-04-03 2000-09-27 Toyota Jidosha Kabushiki Kaisha Structure of an exhaust manifold branch collecting portion
EP1039106A3 (en) * 1995-04-03 2005-02-16 Toyota Jidosha Kabushiki Kaisha Structure of an exhaust manifold branch collecting portion
EP0736678A3 (en) * 1995-04-03 1997-01-29 Toyota Motor Co Ltd Structure of an exhaust manifold branch collecting portion
EP0744537A1 (en) * 1995-05-22 1996-11-27 Dr.Ing.h.c. F. Porsche Aktiengesellschaft Exhaust pipe for internal combustion engines
DE19526084A1 (en) * 1995-07-18 1997-01-23 Porsche Ag Exhaust manifold
US5787709A (en) * 1995-12-26 1998-08-04 Toyota Jidosha Kabushiki Kaisha Exhaust manifold
US6634171B1 (en) * 1999-10-27 2003-10-21 Banks, Iii Gale C. Exhaust scavenging system
EP1199450A3 (en) * 2000-10-16 2003-07-23 J. Eberspächer GmbH & Co. KG Exhaust manifold
US6959543B2 (en) * 2001-09-01 2005-11-01 Ing. H.C.F. Porsche Ag Exhaust gas manifold of an exhaust system for an internal combustion engine
DE10144795A1 (en) * 2001-09-12 2003-04-03 Daimler Chrysler Ag Exhaust gas manifold has exit flange side ends of individual tubes against inner wall of exit flange
EP1344912A3 (en) * 2002-03-13 2006-01-18 Yumex Corporation Structure of an exhaust manifold branch collecting portion
US8468812B1 (en) 2011-10-20 2013-06-25 Gale C. Banks, III Exhaust scavenging system
CN104690108A (en) * 2015-03-30 2015-06-10 西峡县内燃机进排气管有限责任公司 Manufacturing method for tubular stainless steel manifold

Also Published As

Publication number Publication date
FR2612252B1 (en) 1992-04-03
DE3863808D1 (en) 1991-08-29
FR2612252A1 (en) 1988-09-16
EP0284466B1 (en) 1991-07-24

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