EP0057142A2 - Silencer made of corrosion-resisting material for exhaust muffler of motor vehicles - Google Patents

Silencer made of corrosion-resisting material for exhaust muffler of motor vehicles Download PDF

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Publication number
EP0057142A2
EP0057142A2 EP82400117A EP82400117A EP0057142A2 EP 0057142 A2 EP0057142 A2 EP 0057142A2 EP 82400117 A EP82400117 A EP 82400117A EP 82400117 A EP82400117 A EP 82400117A EP 0057142 A2 EP0057142 A2 EP 0057142A2
Authority
EP
European Patent Office
Prior art keywords
shells
plates
silencer
intermediate elements
elements
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
EP82400117A
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German (de)
French (fr)
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EP0057142B1 (en
EP0057142A3 (en
Inventor
Pierre Blanchot
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INDUSTELER S.A.
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INDUSTELER SA
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Publication date
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Publication of EP0057142A2 publication Critical patent/EP0057142A2/en
Publication of EP0057142A3 publication Critical patent/EP0057142A3/en
Application granted granted Critical
Publication of EP0057142B1 publication Critical patent/EP0057142B1/en
Expired legal-status Critical Current

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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
    • F01N13/1872—Construction facilitating manufacture, assembly, or disassembly the assembly using stamp-formed parts or otherwise deformed sheet-metal
    • 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
    • F01N13/009—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 having two or more separate purifying devices arranged in series
    • F01N13/0097—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 having two or more separate purifying devices arranged in series the purifying devices are arranged in a single housing
    • 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
    • F01N13/16—Selection of particular materials
    • 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
    • F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
    • F01N13/1844—Mechanical joints
    • F01N13/185—Mechanical joints the connection being realised by deforming housing, tube, baffle, plate, or parts thereof
    • 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
    • F01N13/1888—Construction facilitating manufacture, assembly, or disassembly the housing of the assembly consisting of two or more parts, e.g. two half-shells
    • 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
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • F01N2470/02—Tubes being perforated
    • 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
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • F01N2470/06—Tubes being formed by assembly of stamped or otherwise deformed sheet-metal
    • 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
    • F01N2510/00—Surface coverings
    • F01N2510/08—Surface coverings for corrosion prevention
    • 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
    • F01N2530/00—Selection of materials for tubes, chambers or housings
    • F01N2530/02—Corrosion resistive metals
    • F01N2530/04—Steel alloys, e.g. stainless steel

Definitions

  • the present invention relates to a silencer intended to be incorporated in the exhaust pipe of a motor vehicle, this silencer being most often made of stainless steel or a neighboring material resistant to the agents under consideration.
  • Mufflers are already known which are made from stainless steel or neighboring metal alloys, but we have always encountered great difficulties during the manufacture of these mufflers, because stainless steel is a noble material. not easy to open. In addition, if it is necessary to weld, the welds are points of low resistance that corrosion can quickly attack and, therefore, the advantages of stainless steel are greatly diminished, not to say practically nullified. However, as stainless steel is an expensive product, it is absolutely necessary to produce silencers by means ensuring complete resistance to corrosion.
  • the elements constituting the silencer must be obtained by conventional methods but also with a reduced tooling because it is very expensive and it must be possible to reduce this tooling to the strict minimum in order to obtain an attractive cost price which , even if it is a little higher than the normal price, must, because of stainless steel, provide an economy since this material is much better resistant to the agents considered, that is to say to the acid gases and liquids leaving the internal combustion engine.
  • the present invention creates a muffler which can be manufactured from a reduced and standardized number of parts in order to be able to produce several types of muffler according to the power of the motors and their design so as to considerably limit the cost price in manufacturing. .
  • the exhaust pipe consists of the bottoms of two half-shells having transverse undulations in which the arched bottoms of intermediate elements in the form of a box rest, the vertically wedged wings of which terminate in wavy edges. into which semicircular corrugations of plates penetrate, then all of these elements are held in place in the two aforementioned half-shells by the peripheral crimping,
  • the plates have holes on the corrugations connecting the spaces delimited by the plates, the intermediate elements and the half-shells.
  • the silencer 1 is produced by two half-shells 2, 3 which are not necessarily symmetrical, the upper half-shell 2 possibly being slightly larger than the lower half-shell 3.
  • these half-shells include, on their periphery, flat edges 2a, 3a which overlap so as to allow crimping of the periphery of the silencer (see fig. 5 and 6),
  • the half-shells each contain three intermediate elements 5, one of which is shown in perspective in fig. 3. As can be seen, each intermediate element has the shape of a box with an arcuate bottom 5a and whose vertical wings .5b end in wavy edges 5c.
  • the arched bottom 5a normally takes place in corrugations or embossments of transverse stiffening 7 provided in the arched walls of the half-shells 1,2 (see fig. 4) and thus the corrugations 7 are immediately reinforced by the interca elements laires 5 which are obtained, like each half-shell, by stamping.
  • a shaped plate 10 is made to rest on the corrugated edges 5c of the elements 5.
  • the latter which is of rectangular shape, is present (see FIG. 1 ) three semi-circular undulations 11 which penetrate into the edges 5c of the intermediate elements.
  • these semi-circular undulations 11 have deformed zones in relief 12 intended to penetrate inside the hollowed-out part of the intermediate elements 5 (see FIG. 4).
  • the shaped plates 10 are pierced with a multitude of holes 13 allowing the communication of the interior of the conduits constituted by two superimposed plates 10 held by the intermediate elements 5 and the volumes delimited by the two superimposed half-shells 2, 3.
  • the holes 13 are drilled in greater or lesser numbers, just as it is possible to provide, in the deformed zones in relief 12, holes 12a enabling communication the tubes constituted by two plates 10 superimposed with the hollowed-out interior of the intermediate elements 5 (see fig. 5).
  • This allows to play on the interior volumes of the silencer by allowing the decompression then the circulation following a broken gas path which are thus relaxed and cooled and which can therefore exit through the terminal tube 20, towards the atmosphere, completely cooled and limiting noise as much as possible.
  • 21 designates the tube which brings the exhaust gases from the engine.
  • the number of holes 13 can vary as well as the number of holes 12a drilled in the deformed zones in relief 12 so that the gases exhaust come out through the end tube 20 in the best conditions.
  • the parts constituting the silencer that is to say the two half-shells 2, 3, the intermediate elements 5, the plates 10 are perfectly crimped on the edges 2a, 3a of the half-shells 2, 3 like this.
  • this kind of silencer made either of stainless steel or of a neighboring metallic material perfectly resistant to the agents considered,

Abstract

Le silencieux en inoxydable pour pot d'échappement pour véhicule automobile est réalisé par deux demi-coquilles (2, 3) à rebords de passant (2a, 3a) permettant le sertissage, les fonds de deux demi-coquilles présentent des ondulations transversales (7) dans lesquelles reposent les fonds arqués (5a) d'éléments intercalaires (5) en forme de coffret dont les ailes verticales (5b) se terminent par des bordures ondulées (5c) dans lesquelles pénètrent des ondulations demi-circulaires (11) de plaques (10) puis tous ces éléments sont maintenus en place dans les deux demi-coquilles précitées par le sertissage périphérique. Aucune soudure (ni interne, ni externe) n'est nécessaire pour sa réalisation.The stainless steel exhaust silencer for motor vehicles is produced by two half-shells (2, 3) with flanges (2a, 3a) allowing crimping, the bottoms of two half-shells have transverse undulations (7 ) in which rest the arched bottoms (5a) of intermediate elements (5) in the form of a box, the vertical wings (5b) of which terminate in wavy edges (5c) into which semicircular undulations (11) of plates penetrate (10) then all of these elements are held in place in the two aforementioned half-shells by the peripheral crimping. No welding (neither internal nor external) is necessary for its realization.

Description

La présente invention a pour objet un silencieux destiné à être incorporé dans le pot d'échappement d'un véhicule automobile, ce silencieux étant réalisé le plus souvent en acier inoxydable ou en une matière voisine résistant bien aux agents considérés.The present invention relates to a silencer intended to be incorporated in the exhaust pipe of a motor vehicle, this silencer being most often made of stainless steel or a neighboring material resistant to the agents under consideration.

On connaît déjà des silencieux qui sont réalisés à partir d'acier inoxydable ou d'alliages métalliques voisins, mais on s'est toujours heurté.lors de la fabrication de ces silencieux à de grandes difficultés, car l'acier inoxydable est un matériau noble peu facile à ouvrer. De plus, s'il est besoin de souder, les soudures sont des points de faible résistance que la corrosion peut rapidement attaquer et, de ce fait, les avantages de l'acier inoxydable sont très amoindris pour ne pas dire pratiquement réduits à néant. Or, comme l'acier inoxydable est un produit cher, il est absolument nécessaire de réaliser des silencieux par des moyens assurant une résistance complète à la corrosion. Les éléments constituant le silencieux doivent être obtenus par des procédés classiques mais également avec un outillage réduit car celui-ci est fort onéreux et l'on doit pouvoir réduire cet outillage au strict minimum afin d'obte- nit un prix de revient intéressant et qui, même s'il est un peu supérieur au prix normal, doit, du fait de l'acier inoxydable, procurer une économie puisque ce matériau résiste beaucoup mieux aux agents considérés, c'est-à-dire aux gaz et liquides acides sortant du moteur à combustion interne.Mufflers are already known which are made from stainless steel or neighboring metal alloys, but we have always encountered great difficulties during the manufacture of these mufflers, because stainless steel is a noble material. not easy to open. In addition, if it is necessary to weld, the welds are points of low resistance that corrosion can quickly attack and, therefore, the advantages of stainless steel are greatly diminished, not to say practically nullified. However, as stainless steel is an expensive product, it is absolutely necessary to produce silencers by means ensuring complete resistance to corrosion. The elements constituting the silencer must be obtained by conventional methods but also with a reduced tooling because it is very expensive and it must be possible to reduce this tooling to the strict minimum in order to obtain an attractive cost price which , even if it is a little higher than the normal price, must, because of stainless steel, provide an economy since this material is much better resistant to the agents considered, that is to say to the acid gases and liquids leaving the internal combustion engine.

La présente invention crée un silencieux qui peut être fabriqué à partir d'un nombre de pièces réduites et standardisées afin de pouvoir réaliser plusieurs types de silencieux selon la puissance- des moteurs et leur conception pour, ainsi, limiter considérablement le prix de revient en fabrication.The present invention creates a muffler which can be manufactured from a reduced and standardized number of parts in order to be able to produce several types of muffler according to the power of the motors and their design so as to considerably limit the cost price in manufacturing. .

Conformément à l'invention, le pot d'échappement est constitué par les fonds de deux demi-coquilles présentant des ondulations transversales dans lesquelles reposent les fonds arqués d'éléments intercalaires en forme de coffret dont les ailes verti cales se terminent par des bordures ondulées dans lesquelles pénètrent des ondulations demi-circulaires de plaques puis tous ces éléments sont maintenus en place dans les deux demi-coquilles précitées par le sertissage périphérique,In accordance with the invention, the exhaust pipe consists of the bottoms of two half-shells having transverse undulations in which the arched bottoms of intermediate elements in the form of a box rest, the vertically wedged wings of which terminate in wavy edges. into which semicircular corrugations of plates penetrate, then all of these elements are held in place in the two aforementioned half-shells by the peripheral crimping,

Suivant une autre caractéristique de l'invention, les plaques présentent sur les ondulations des trous mettant en communication les espaces délimités par les plaques, les éléments intercalaires et les demi-coquilles.According to another characteristic of the invention, the plates have holes on the corrugations connecting the spaces delimited by the plates, the intermediate elements and the half-shells.

Diverses autres caractéristiques de l'invention ressortent d'ailleurs de la description détaillée qui suit.Various other characteristics of the invention will also emerge from the detailed description which follows.

Une forme de réalisation de l'objet de l'invention est représentée, à titre d'exemple, aux dessins annexés.

  • La fig. 1 est un plan, en partie arrachée, d'un silencieux conforme à l'invention.
  • La fig. 2 montre la face supérieure d'un silencieux conforme à l'invention, la demi-coquille supérieure étant simplement schématisée.
  • La fig. 3 est une vue en perspective d'un des éléments du silencieux.
  • La fig. 4 est une coupe suivant la ligne IV-IV de la fig. 1.
  • Les fig. 5 et 6 sont des coupes suivant les lignes V-V et VI-VI de la fig. 1.
An embodiment of the object of the invention is shown, by way of example, in the accompanying drawings.
  • Fig. 1 is a plan, partially broken away, of a silencer according to the invention.
  • Fig. 2 shows the upper face of a silencer according to the invention, the upper half-shell being simply shown.
  • Fig. 3 is a perspective view of one of the elements of the silencer.
  • Fig. 4 is a section along the line IV-IV of FIG. 1.
  • Figs. 5 and 6 are sections along the lines VV and VI-VI of FIG. 1.

Au dessin, le silencieux 1 est réalisé par deux demi-coquilles 2, 3 qui ne sont pas obligatoirement symétriques, la demi-coquille supérieure 2 pouvant être légèrement plus volumineuse que la demi-coquille inférieure 3. Cependant, ces demi-coquilles comportent, sur leur périphérie, des rebords plans 2a, 3a qui se superposent de façon à permettre un sertissage du pourtour du silencieux (voir fig. 5 et 6) , Les demi-coquilles contiennent chacune trois éléments intercalaires 5 dont l'un est représenté en perspective à la fig. 3. Comme on le voit, chaque élément intercalaire présente la forme d'un coffret à fond arqué 5a et dont les ailes verticales .5b se terminent par des bordures ondulées 5c. Le fond arqué 5a prend place normalement dans des ondulations ou gaufrages de raidissements transversaux 7 prévus dans les parois arquées des demi-coquilles 1,2 (voir fig. 4) et ainsi les ondulations 7 sont immédiatement renforcées par les éléments intercalaires 5 qui sont obtenus, comme chaque demi-coquille, par emboutissage. Lorsque les éléments intercalaires 5 sont en place dans chaque demi-coquille 2, 3, on fait reposer, sur les bords ondulés 5c des éléments 5, une plaque conformée 10. Cette dernière, qui est de forme rectangulaire, présente (voir fig. 1) trois ondulations demi-circulaires 11 qui pénètrent dans les bordures 5c des éléments intercalaires. De plus, ces ondulations demi-circulaires 11 présentent des zones déformées en relief 12 destinées à pénétrer à l'intérieur de la partie évidée des éléments intercalaires 5 (voir fig. 4) .In the drawing, the silencer 1 is produced by two half-shells 2, 3 which are not necessarily symmetrical, the upper half-shell 2 possibly being slightly larger than the lower half-shell 3. However, these half-shells include, on their periphery, flat edges 2a, 3a which overlap so as to allow crimping of the periphery of the silencer (see fig. 5 and 6), The half-shells each contain three intermediate elements 5, one of which is shown in perspective in fig. 3. As can be seen, each intermediate element has the shape of a box with an arcuate bottom 5a and whose vertical wings .5b end in wavy edges 5c. The arched bottom 5a normally takes place in corrugations or embossments of transverse stiffening 7 provided in the arched walls of the half-shells 1,2 (see fig. 4) and thus the corrugations 7 are immediately reinforced by the interca elements laires 5 which are obtained, like each half-shell, by stamping. When the intermediate elements 5 are in place in each half-shell 2, 3, a shaped plate 10 is made to rest on the corrugated edges 5c of the elements 5. The latter, which is of rectangular shape, is present (see FIG. 1 ) three semi-circular undulations 11 which penetrate into the edges 5c of the intermediate elements. In addition, these semi-circular undulations 11 have deformed zones in relief 12 intended to penetrate inside the hollowed-out part of the intermediate elements 5 (see FIG. 4).

Entre les zones déformées en relief 12, les plaques conformées 10 sont percées d'une multitude de trous 13 permettant la mise en communication de l'intérieur des conduits constitués par deux plaques 10 superposées maintenues par les éléments intercalaires 5 et les volumes délimités par les deux demi-coquilles 2, 3 superposées.Between the deformed zones in relief 12, the shaped plates 10 are pierced with a multitude of holes 13 allowing the communication of the interior of the conduits constituted by two superimposed plates 10 held by the intermediate elements 5 and the volumes delimited by the two superimposed half-shells 2, 3.

Compte tenu des caractéristiques du moteur devant être équipé de ce silencieux, les trous 13 sont percés en nombres plus ou moins grands de même qu'il est possible de prévoir, dans les zones déformées en relief 12, des trous 12a permettant de mettre en communication les tubes constitués par deux plaques 10 superposées avec l'intérieur évidé des éléments intercalaires 5 (voir fig. 5). Ceci permet de jouer sur les volumes intérieurs du silencieux en permettant la décompression puis la circulation suivant un parcours brisé des gaz qui sont ainsi détendus et refroidis et qui peuvent donc sortir par le tube terminal 20, vers l'atmosphère, complètement refroidis et en limitant au maximum le bruit. 21 désigne le tube qui amène, depuis le moteur, les gaz d'échappement.Given the characteristics of the engine to be fitted with this silencer, the holes 13 are drilled in greater or lesser numbers, just as it is possible to provide, in the deformed zones in relief 12, holes 12a enabling communication the tubes constituted by two plates 10 superimposed with the hollowed-out interior of the intermediate elements 5 (see fig. 5). This allows to play on the interior volumes of the silencer by allowing the decompression then the circulation following a broken gas path which are thus relaxed and cooled and which can therefore exit through the terminal tube 20, towards the atmosphere, completely cooled and limiting noise as much as possible. 21 designates the tube which brings the exhaust gases from the engine.

Suivant le parcours du tube d'amenée des gaz chauds comprimés, le type du moteur, son rendement énergétique, son fonctionnement en moteur deux temps, quatre temps ou diesel, on peut être amené à modifier non seulement le nombre des éléments intercalaires 5 mais également la distance séparant ces éléments intercalaires, par conséquent la distance séparant les zones déformées en relief 12 des plaques 10. Le nombre de trous 13 peut varier ainsi que le nombre de trous 12a percés dans les zones déformées en relief 12 afin que les gaz d'échappement sortent par le tube terminal 20 dans les meilleures conditions.Depending on the path of the compressed hot gas supply tube, the type of engine, its fuel efficiency, its operation as a two-stroke, four-stroke or diesel engine, it may be necessary to modify not only the number of intermediate elements 5 but also the distance separating these intermediate elements, consequently the distance separating the deformed zones in relief 12 from the plates 10. The number of holes 13 can vary as well as the number of holes 12a drilled in the deformed zones in relief 12 so that the gases exhaust come out through the end tube 20 in the best conditions.

Bien entendu les pièces constituant le silencieux, c'est-à-dire les deux demi-coquilles 2, 3, les éléments intercalaires 5, les plaques 10 sont parfaitement sertis sur les rebords 2a, 3a des demi-coquilles 2, 3 comme cela est courant dans ce genre de silencieux réalisé soit en acier inoxydable soit dans une matière métallique voisine résistant parfaitement aux agents considérés,Of course the parts constituting the silencer, that is to say the two half-shells 2, 3, the intermediate elements 5, the plates 10 are perfectly crimped on the edges 2a, 3a of the half-shells 2, 3 like this. is common in this kind of silencer made either of stainless steel or of a neighboring metallic material perfectly resistant to the agents considered,

L'invention n'est pas limitée à l'exemple de réalisation représenté et décrit en détail car diverses modifications peuvent y être apportées sans sortir de son cadre.The invention is not limited to the embodiment shown and described in detail since various modifications can be made without departing from its scope.

Claims (4)

1 - Silencieux en inoxydable pour pot d'échappement pour véhicule automobile, qui est réalisé par deux démi-coquilles (2 , 3) é rebords dépassants (2a, 3a) permettant le sertissage, caractérisé en ce que les fonds de deux demi-coquilles présentent des ondulations transversales (7) dans lesquelles reposent les fonds arqués (5a) d'éléments intercalaires (5) en forme de coffret dont les ailes verticales (5b) se terminent par des bordures ondulées (5c) dans lesquelles pénètrent des ondulations demi-circulaires (11) de plaques (10) puis tous ces éléments sont maintenus en place dans les deux demi-coquilles précitées par le sertissage périphérique.1 - Stainless steel silencer for exhaust for a motor vehicle, which is produced by two half-shells (2, 3) and protruding edges (2a, 3a) allowing crimping, characterized in that the bottoms of two half-shells have transverse undulations (7) in which rest the arched bottoms (5a) of intermediate elements (5) in the form of a box, the vertical wings (5b) of which end in corrugated edges (5c) into which half undulations penetrate circular (11) of plates (10) then all these elements are held in place in the two aforementioned half-shells by the peripheral crimping. 2 - Silencieux suivant la revendication 1, caractérisé en ce que les plaques (10) présentent sur les ondulations (11) des trous (13) mettant en communication les espaces délimités par les plaques (10), les éléments intercalaires (5) et les demi-coquilles (2, 3).2 - Silencer according to claim 1, characterized in that the plates (10) have on the corrugations (11) holes (13) connecting the spaces defined by the plates (10), the intermediate elements (5) and the half-shells (2, 3). 3 - Silencieux suivant l'une des revendications 1 et 2, caractérisé en ce qu'il est prévu des trous (12a) percés dans des zones déformées en relief (12) des plaques (10) au droit des éléments intercalaires (5).3 - Muffler according to one of claims 1 and 2, characterized in that there are provided holes (12a) drilled in deformed areas in relief (12) of the plates (10) in line with the intermediate elements (5). 4 - Silencieux ne nécessitant aucune soudure (ni interne, ni externe) pour immobilisation des intercalaires.4 - Silent requiring no welding (neither internal nor external) for immobilization of the spacers.
EP82400117A 1981-01-23 1982-01-22 Silencer made of corrosion-resisting material for exhaust muffler of motor vehicles Expired EP0057142B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8101209A FR2498682B1 (en) 1981-01-23 1981-01-23 STAINLESS STEEL MUFFLER FOR MOTOR VEHICLE EXHAUST
FR8101209 1981-01-23

Publications (3)

Publication Number Publication Date
EP0057142A2 true EP0057142A2 (en) 1982-08-04
EP0057142A3 EP0057142A3 (en) 1982-08-11
EP0057142B1 EP0057142B1 (en) 1984-05-23

Family

ID=9254432

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82400117A Expired EP0057142B1 (en) 1981-01-23 1982-01-22 Silencer made of corrosion-resisting material for exhaust muffler of motor vehicles

Country Status (5)

Country Link
US (1) US4456091A (en)
EP (1) EP0057142B1 (en)
DE (2) DE57142T1 (en)
ES (1) ES271007Y (en)
FR (1) FR2498682B1 (en)

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DE3415064A1 (en) * 1984-04-21 1985-10-31 Fa. J. Eberspächer, 7300 Esslingen Process for the manufacture of a silencer
FR2629864A1 (en) * 1988-04-12 1989-10-13 Renault SILENCER FOR EXPLOSION ENGINES
EP0563843A1 (en) * 1992-03-31 1993-10-06 MARMITTE ZARA S.p.A. Method for manufacturing mufflers for motor vehicles and mufflers obtained thereby
CN111630193A (en) * 2018-02-09 2020-09-04 贺利氏德国有限两合公司 Method for processing noble metal-tin alloy by wet metallurgy

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DE3415064A1 (en) * 1984-04-21 1985-10-31 Fa. J. Eberspächer, 7300 Esslingen Process for the manufacture of a silencer
FR2629864A1 (en) * 1988-04-12 1989-10-13 Renault SILENCER FOR EXPLOSION ENGINES
EP0337877A1 (en) * 1988-04-12 1989-10-18 Regie Nationale Des Usines Renault Silencer for internal-combustion engines
EP0563843A1 (en) * 1992-03-31 1993-10-06 MARMITTE ZARA S.p.A. Method for manufacturing mufflers for motor vehicles and mufflers obtained thereby
CN111630193A (en) * 2018-02-09 2020-09-04 贺利氏德国有限两合公司 Method for processing noble metal-tin alloy by wet metallurgy
CN111630193B (en) * 2018-02-09 2022-05-03 贺利氏德国有限两合公司 Method for processing noble metal-tin alloy by wet metallurgy

Also Published As

Publication number Publication date
DE57142T1 (en) 1983-04-14
FR2498682A1 (en) 1982-07-30
ES271007U (en) 1983-08-16
ES271007Y (en) 1984-03-01
EP0057142B1 (en) 1984-05-23
US4456091A (en) 1984-06-26
EP0057142A3 (en) 1982-08-11
FR2498682B1 (en) 1986-08-08
DE3260168D1 (en) 1984-06-28

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