EP1717424A1 - Support for an exhaust line - Google Patents

Support for an exhaust line Download PDF

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Publication number
EP1717424A1
EP1717424A1 EP05103503A EP05103503A EP1717424A1 EP 1717424 A1 EP1717424 A1 EP 1717424A1 EP 05103503 A EP05103503 A EP 05103503A EP 05103503 A EP05103503 A EP 05103503A EP 1717424 A1 EP1717424 A1 EP 1717424A1
Authority
EP
European Patent Office
Prior art keywords
exhaust line
support device
elastic
elastic elements
line support
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
EP05103503A
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German (de)
French (fr)
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EP1717424B1 (en
Inventor
Pierre Delmon
Jean Mas
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.)
Delmon Industrie SAS
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Delmon Industrie SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Delmon Industrie SAS filed Critical Delmon Industrie SAS
Priority to DE602005027056T priority Critical patent/DE602005027056D1/en
Priority to ES05103503T priority patent/ES2362584T3/en
Priority to EP09178489A priority patent/EP2177732A1/en
Priority to AT05103503T priority patent/ATE503090T1/en
Priority to EP05103503A priority patent/EP1717424B1/en
Publication of EP1717424A1 publication Critical patent/EP1717424A1/en
Application granted granted Critical
Publication of EP1717424B1 publication Critical patent/EP1717424B1/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
    • F01N13/1811—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body with means permitting relative movement, e.g. compensation of thermal expansion or vibration
    • F01N13/1822—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body with means permitting relative movement, e.g. compensation of thermal expansion or vibration for fixing exhaust pipes or devices 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
    • F01N2530/00—Selection of materials for tubes, chambers or housings
    • F01N2530/22—Flexible elastomeric material

Definitions

  • the present invention relates to an exhaust line support device particularly adapted to maintaining an exhaust line at the outlet of the engine compartment of a vehicle and in particular usable to limit the deflections of the line relative to a hose connecting the vehicle. line to an exhaust manifold.
  • the support device comprises two elastic fastening elements arranged on either side of the exhaust line and each fixed, on the one hand, to a structural element of the vehicle and, on the other hand, to a paw of integral fastening of the exhaust line.
  • FIG. 1 shows a double fastening device comprising two elastic fastening elements a and a support plate of a heat shield c.
  • the exhaust line attaches to this device using rods inserted in housings d made in the elastic fasteners.
  • Such a device has the disadvantage, on the one hand not to allow precise control of the spacings between the housing made in the fasteners, which makes it difficult to install the exhaust line on the production line of the vehicle and after-sales, and, secondly, to be too flexible along the longitudinal and transverse axes of the vehicle, which makes it imprecise positioning of the exhaust line relative to the screen thermal and underbody of the vehicle and induces vibrations of the line causing noise and fatigue of the line and / or the hose connecting the line to the exhaust manifold on the engine side.
  • the present invention provides an exhaust line support device better able to maintain the line rigidly in particular along the longitudinal and transverse axes of the vehicle and defining a precise spacing.
  • the support device of the invention has the advantage of facilitating the installation of the exhaust line on the vehicle and to better center the latter with respect to the heat shield and the underbody of the vehicle.
  • the present invention provides an exhaust line support device comprising at least two elastic elements, arranged on either side of the exhaust line, each provided, at a first end, with means for maintaining the an element of the exhaust line, at a second end, fixing means on a structural element of the vehicle and provided with an elastic intermediate section between their first and second ends, the device further comprising a mounting plate, provided with legs connected by a bridge, receiving the second ends of the elastic elements, said elastic elements being secured to the fixing plate by their second end and having, at their intermediate section, a first leg connecting the first end of the elastic elements to the trigger guard.
  • the distance between the first ends of the elastic elements of the support device and the bridge made by the first legs is determined precisely, which avoids relative positioning defects between the means of maintenance.
  • the first leg of each elastic element constitutes a strut inclined with respect to an axis A passing through the first and second ends of the elastic element carrying it.
  • the first legs of the two elastic elements disposed on either side of the exhaust line are thus inclined in opposite directions, oppose the lateral movements of the exhaust line and refocus it with respect to the element of structure of the vehicle to which the device is attached.
  • FIG. 2 An exemplary embodiment of the support device according to the invention is described in particular use in Figure 2.
  • the device which will be detailed below with reference to Figures 3 to 6, allows, in the application shown, to maintain a line of exhaust 3 on a structural element of the vehicle 11 at the outlet of the engine compartment.
  • the structural element is for example the engine cradle.
  • the line shown comprises a hose 36 connecting a traditional exhaust manifold of a motor vehicle, a first conduit 35 between the hose 36 and a catalytic converter 31, a second conduit 32 between the catalytic converter 31 and a silencer 33 at the end of the line.
  • the support device must absorb the vibrations of the engine and its movements, in particular during acceleration, deceleration and shifting of the vehicle, without transmitting them to the line and must allow the hose 36 to work in compression. and in extension to attenuate these movements and vibrations.
  • the device must, on the one hand, hold the line in the lateral, vertical and longitudinal directions to prevent any noise and fatigue generating movement of the constituent materials and, on the other hand, to reduce the vibrations of this material. line.
  • the device must therefore be of significant stiffness along the longitudinal axis X of the vehicle, the transverse axis Y of the vehicle and the vertical axis Z while having good characteristics of filtering the vibrations of the line.
  • the exhaust line when mounting the exhaust line on the vehicle, the latter must be positioned precisely with respect to the exhaust outlet of the engine and the support device must perfectly center it.
  • the described device comprises two elastic elements 1, arranged on either side of the exhaust line 3, each provided, at a first end, means for holding a line element exhaust 3, here a hoop 34 welded to the duct 35, and comprises a fixing plate 6 secured to the structural element 11.
  • the support device is more particularly detailed in FIG.
  • the elastic elements comprise a first end 2 of connection with the exhaust line, an intermediate portion 5 and a second end 4 of attachment to the vehicle.
  • the elastic elements 1 are each provided, at their first end 2, with means 21 for holding an element of the exhaust line, these means being, according to the example, constituted by tubular receiving housings of rods 14 secured to the exhaust line 3.
  • the rods are the ends of a hoop 34 welded on the line 3 but other configurations such as separate rods welded to the catalyst are of course possible.
  • the elastic elements are provided with means 41 for fixing the device on the structural element 11 of the vehicle, these means being, according to the example, threaded rods welded or crimped onto the fixing plate 6.
  • the elastic elements 1 are each provided with an elastic intermediate section 5, this intermediate section being in use aligned in the vertical direction Z with the first and second ends of the elastic element carrying it. .
  • the device according to the invention further comprises a mounting plate 6 provided with legs 7 receiving the second ends 4 of the elastic elements 1.
  • the elastic elements in the context of the invention are advantageously made of elastomer material and overmolded on the plate, the second end 4 of the elastic elements being constituted by a molded foot on the base 7 receiving it.
  • the legs of the plate are connected by a bridge 8 provided with a central plate 12 and two inclined branches 13 connecting the legs 7 to the ends of the central plate of the mounting plate 6.
  • the elastic elements 1, secured to the fixing plate 6 by their second end 4 comprise, at their intermediate section 5, a first leg 9 connecting the first end 2 of the elastic elements 1 to the bridge 8.
  • This configuration reinforces the attachment of the exhaust line with respect to a support device consisting of two independent elastic elements such as the device of FIG. 1 and precisely defines the spacing between the tubular housings 21 receiving the rods 14.
  • each elastic element 1 is shaped as an inclined strut relative to an axis A passing through the first and second ends 2, 4 of the elastic element 1 carrying it.
  • This leg 9 has a high stiffness and can be made with a cross section, as shown in Figures 5 and 6, in the case where a very high fixation rigidity is sought, or, as shown in Figure 3 have a thinned section in its intermediate part to adapt the stiffness of the elastic element as a function of the mass of the line and vibratory frequencies to be attenuated.
  • first end 2 is connected to the intermediate section 5 by a bridging 5a symmetrical or not with respect to said axis A, that is to say whose dimensions of width respectively a and b in Figure 4 with respect to the axis A are identical or not.
  • the two elastic elements are constituted from a common mold in a single elastomer piece overmolded on the plate 6, the overmolding on the bridge 8 being thin and not participating in the elasticity of the elements 1.
  • the elastic elements 1 are symmetrical with respect to a median plane P secant with the plate 6 and perpendicular to the latter.
  • the first leg 9 of each elastic element is inclined, along an axis B for the left-hand element and an axis C for the right-hand element, the axes B and C intersecting in the plane P.
  • the inclination of the first leg 9 is defined as a function of the difference in height between the legs 7 and the central plate 12 of the bridge and the resistance that one wishes to obtain along the axis Y.
  • the first jambs 9 are connected to the bridge 8 in the vicinity of the connection of the central plate 12 with the inclined branches 13.
  • the elastic elements in the embodiment shown comprise a second leg 10 connecting the first and the second end 2, 4 of the elastic elements 1 at their intermediate section 5.
  • the second leg 10 comprises two branches 10a, 10b connected by a bend, which makes it possible to adapt the elasticity of the device along the vertical axis Z.
  • first leg 9 and the second leg 10 constitute an asymmetrical elastic structure which offers a great flexibility in adapting the stiffness of the elastic elements along the X, Y and Z axes.
  • the section of the leg 10 can be, like that of the leg 9, increased or reduced in order to adapt the stiffness of said elastic elements 1.
  • the second end 4 comprises a foot 42 forming a stop for the first end 2 of the elastic element 1 in the case where the intermediate section 5 would be to be strongly compressed.
  • the width (dimension c, FIG. 4) with respect to the axis A of the foot 42 may be modified to adapt the stiffness.
  • the bridge 8 may constitute a support for fixing a heat shield 15 positioned on either side of the exhaust line 3 and between the first ends 2 of the elastic elements 1.
  • Such a heat shield is in particular represented in FIG. 5.
  • the stiffness of the elastic elements and their perfect positioning along the Y axis by the first legs center the line in the middle of the screen 15, which prevents any contact or impact. of the line with this screen.
  • the device is fixed by the fastening means 41 on the engine cradle so that the first ends 2 are above the second ends 4.
  • Fixing the device is performed by the threaded rods protruding from the plate 6 to the opposite of said first ends 2 and received in the structural element 11 of the vehicle and then held with nuts.
  • the support device according to the invention offers excellent resistance to forces along the three axes, very good positioning accuracy of the line due to the support of the first leg on the bridge and can be adapted to stiffness by locally reducing the section of the jambs and adapting the geometry of the second leg of the elastic elements.
  • the invention is not limited to the embodiments shown and in particular it is of course possible to use the device for fixing the rear of the line, the device then being used upside down.

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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)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Vibration Prevention Devices (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

The device has elastic units (1) disposed on both the sides of an exhaust line (3), and tubular housings (21) for maintaining a unit of the exhaust line. A unit (41) fixes the device on a structural unit of a vehicle and includes an elastic intermediate section (5) between two ends (2, 4). The elastic units are integrated to a mounting plate (6) through the end (4) and includes a jamb (9) connecting the end (2) to a deck plate (8).

Description

La présente invention concerne un dispositif support de ligne d'échappement notamment adapté au maintien d'une ligne d'échappement en sortie du compartiment moteur d'un véhicule et en particulier utilisable pour limiter les débattements de la ligne par rapport à un flexible reliant la ligne à un collecteur d'échappement.The present invention relates to an exhaust line support device particularly adapted to maintaining an exhaust line at the outlet of the engine compartment of a vehicle and in particular usable to limit the deflections of the line relative to a hose connecting the vehicle. line to an exhaust manifold.

Le dispositif support selon l'invention comporte deux éléments de fixation élastiques disposés de part et d'autre de la ligne d'échappement et fixés chacun, d'une part à un élément structurel du véhicule et, d'autre part à une patte de fixation solidaire de la ligne d'échappement.The support device according to the invention comprises two elastic fastening elements arranged on either side of the exhaust line and each fixed, on the one hand, to a structural element of the vehicle and, on the other hand, to a paw of integral fastening of the exhaust line.

Des dispositifs de fixation doubles sont connus et notamment la figure 1 représente un dispositif de fixation double comportant deux éléments de fixation élastiques a et une plaque b support d'un écran thermique c.Double fastening devices are known and in particular FIG. 1 shows a double fastening device comprising two elastic fastening elements a and a support plate of a heat shield c.

La ligne d'échappement s'accroche à ce dispositif à l'aide de tiges s'insérant dans des logements d réalisés dans les éléments de fixation élastiques.The exhaust line attaches to this device using rods inserted in housings d made in the elastic fasteners.

Un tel dispositif comporte comme inconvénient, d'une part de ne pas permettre de maîtriser de façon précise les entraxes entre les logements réalisés dans les éléments de fixation, ce qui rend difficile la pose de la ligne d'échappement sur la chaîne de fabrication du véhicule et en après-vente, et, d'autre part, d'être d'une trop grande souplesse selon les axes longitudinal et transversal du véhicule, ce qui rend imprécis le positionnement de la ligne d'échappement par rapport à l'écran thermique et au soubassement du véhicule et induit des vibrations de la ligne causant du bruit et une fatigue de la ligne et/ou du flexible reliant la ligne au collecteur d'échappement côté moteur.Such a device has the disadvantage, on the one hand not to allow precise control of the spacings between the housing made in the fasteners, which makes it difficult to install the exhaust line on the production line of the vehicle and after-sales, and, secondly, to be too flexible along the longitudinal and transverse axes of the vehicle, which makes it imprecise positioning of the exhaust line relative to the screen thermal and underbody of the vehicle and induces vibrations of the line causing noise and fatigue of the line and / or the hose connecting the line to the exhaust manifold on the engine side.

La présente invention propose un dispositif support de ligne d'échappement mieux à même de maintenir la ligne de façon rigide notamment selon les axes longitudinal et transversal du véhicule et définissant un entraxe précis.The present invention provides an exhaust line support device better able to maintain the line rigidly in particular along the longitudinal and transverse axes of the vehicle and defining a precise spacing.

Le dispositif support de l'invention a pour avantage de faciliter la pose de la ligne d'échappement sur le véhicule et de mieux centrer cette dernière par rapport à l'écran thermique et au soubassement du véhicule.The support device of the invention has the advantage of facilitating the installation of the exhaust line on the vehicle and to better center the latter with respect to the heat shield and the underbody of the vehicle.

Pour ce faire, la présente invention prévoit un dispositif support de ligne d'échappement comportant au moins deux éléments élastiques, disposés de part et d'autre de la ligne d'échappement, pourvus chacun, à une première extrémité, de moyens de maintien d'un élément de la ligne d'échappement, à une seconde extrémité, de moyens de fixation sur un élément structurel du véhicule et pourvus d'une section intermédiaire élastique entre leurs première et seconde extrémités, le dispositif comportant en outre une platine de fixation, pourvue de piétements reliés par un pontet, recevant les secondes extrémités des éléments élastiques, lesdits éléments élastiques étant solidaires de la platine de fixation par leur seconde extrémité et comportant, au niveau de leur section intermédiaire, un premier jambage reliant la première extrémité des éléments élastiques au pontet.To do this, the present invention provides an exhaust line support device comprising at least two elastic elements, arranged on either side of the exhaust line, each provided, at a first end, with means for maintaining the an element of the exhaust line, at a second end, fixing means on a structural element of the vehicle and provided with an elastic intermediate section between their first and second ends, the device further comprising a mounting plate, provided with legs connected by a bridge, receiving the second ends of the elastic elements, said elastic elements being secured to the fixing plate by their second end and having, at their intermediate section, a first leg connecting the first end of the elastic elements to the trigger guard.

Du fait de la liaison entre les premières extrémités des éléments élastiques du dispositif support et le pontet réalisée par les premiers jambages, la distance entre les premières extrémités des éléments élastiques est déterminée avec précision, ce qui évite des défauts de positionnement relatif entre les moyens de maintien.Due to the connection between the first ends of the elastic elements of the support device and the bridge made by the first legs, the distance between the first ends of the elastic elements is determined precisely, which avoids relative positioning defects between the means of maintenance.

Avantageusement, le premier jambage de chaque élément élastique constitue une jambe de force inclinée par rapport à un axe A passant par les première et seconde extrémités de l'élément élastique le portant. Les premiers jambages des deux éléments élastiques disposés de part et d'autre de la ligne d'échappement sont ainsi inclinés en vis à vis, s'opposent aux mouvements latéraux de la ligne d'échappement et la recentrent par rapport à l'élément de structure du véhicule auquel est fixé le dispositif.Advantageously, the first leg of each elastic element constitutes a strut inclined with respect to an axis A passing through the first and second ends of the elastic element carrying it. The first legs of the two elastic elements disposed on either side of the exhaust line are thus inclined in opposite directions, oppose the lateral movements of the exhaust line and refocus it with respect to the element of structure of the vehicle to which the device is attached.

D'autres caractéristiques et avantages de l'invention seront mieux compris à la lecture de la description qui va suivre d'un exemple de réalisation non limitatif en référence aux figures qui représentent:

  • En figure 1: un dispositif support de l'art antérieur;
  • En figure 2: une vue générale d'une ligne d'échappement fixée à un élément structurel d'un véhicule par un dispositif selon l'invention;
  • En figure 3: une vue en perspective d'un dispositif selon l'invention en regard d'un tronçon de ligne d'échappement;
  • En figure 4: un dispositif selon l'invention en vue de face;
  • En figures 5 et 6: deux vues en perspective du dessus et du dessous d'un dispositif selon l'invention.
Other characteristics and advantages of the invention will be better understood on reading the following description of a nonlimiting exemplary embodiment with reference to the figures which represent:
  • In FIG. 1: a support device of the prior art;
  • In Figure 2: a general view of an exhaust line attached to a structural element of a vehicle by a device according to the invention;
  • In Figure 3: a perspective view of a device according to the invention facing an exhaust line section;
  • In Figure 4: a device according to the invention in front view;
  • In Figures 5 and 6: two perspective views of the top and bottom of a device according to the invention.

Un exemple de réalisation du dispositif support selon l'invention est décrit en utilisation notamment à la figure 2. Le dispositif, qui sera détaillé plus loin en référence aux figures 3 à 6, permet, dans l'application représentée, de maintenir une ligne d'échappement 3 sur un élément structurel du véhicule 11 en sortie de compartiment moteur. L'élément structurel est par exemple le berceau moteur.An exemplary embodiment of the support device according to the invention is described in particular use in Figure 2. The device, which will be detailed below with reference to Figures 3 to 6, allows, in the application shown, to maintain a line of exhaust 3 on a structural element of the vehicle 11 at the outlet of the engine compartment. The structural element is for example the engine cradle.

La ligne représentée comprend un flexible 36, de raccordement à un collecteur d'échappement traditionnel d'un véhicule automobile, un premier conduit 35 entre le flexible 36 et un pot catalytique 31, un second conduit 32 entre le pot catalytique 31 et un silencieux 33 en sortie de la ligne.The line shown comprises a hose 36 connecting a traditional exhaust manifold of a motor vehicle, a first conduit 35 between the hose 36 and a catalytic converter 31, a second conduit 32 between the catalytic converter 31 and a silencer 33 at the end of the line.

Dans une telle application, le dispositif support doit encaisser les vibrations du moteur et ses mouvements, en particulier lors des accélérations, des décélérations et des changements de vitesses du véhicule, sans les transmettre à la ligne et doit permettre au flexible 36 de travailler en compression et en extension pour atténuer ces mouvements et vibrations.In such an application, the support device must absorb the vibrations of the engine and its movements, in particular during acceleration, deceleration and shifting of the vehicle, without transmitting them to the line and must allow the hose 36 to work in compression. and in extension to attenuate these movements and vibrations.

En outre, le dispositif doit, d'une part, retenir la ligne dans les directions latérale, verticale et longitudinale pour lui éviter tout mouvement générateur de bruit et de fatigue des matériaux la constituant et, d'autre part, atténuer les vibrations de cette ligne.In addition, the device must, on the one hand, hold the line in the lateral, vertical and longitudinal directions to prevent any noise and fatigue generating movement of the constituent materials and, on the other hand, to reduce the vibrations of this material. line.

Le dispositif doit donc être d'une une raideur importante selon l'axe longitudinal X du véhicule, l'axe transversal Y de ce véhicule et l'axe vertical Z tout en possédant de bonnes caractéristiques de filtrage des vibrations de la ligne.The device must therefore be of significant stiffness along the longitudinal axis X of the vehicle, the transverse axis Y of the vehicle and the vertical axis Z while having good characteristics of filtering the vibrations of the line.

De plus, lors du montage de la ligne d'échappement sur le véhicule, cette dernière doit se positionner précisément par rapport à la sortie d'échappement du moteur et le dispositif support doit parfaitement la centrer.In addition, when mounting the exhaust line on the vehicle, the latter must be positioned precisely with respect to the exhaust outlet of the engine and the support device must perfectly center it.

Pour ce faire, le dispositif décrit comporte deux éléments élastiques 1, disposés de part et d'autre de la ligne d'échappement 3, pourvus chacun, à une première extrémité, de moyens de maintien d'un élément de la ligne d'échappement 3, ici un arceau 34 soudé sur le conduit 35, et comporte une platine de fixation 6 solidarisée à l'élément structurel 11.To do this, the described device comprises two elastic elements 1, arranged on either side of the exhaust line 3, each provided, at a first end, means for holding a line element exhaust 3, here a hoop 34 welded to the duct 35, and comprises a fixing plate 6 secured to the structural element 11.

Le dispositif support est plus particulièrement détaillé en figure 3.The support device is more particularly detailed in FIG.

Les éléments élastiques comprennent une première extrémité 2 de liaison avec la ligne d'échappement, une partie intermédiaire 5 et une seconde extrémité 4 de fixation sur le véhicule.The elastic elements comprise a first end 2 of connection with the exhaust line, an intermediate portion 5 and a second end 4 of attachment to the vehicle.

Pour maintenir la ligne, les éléments élastiques 1 sont pourvus chacun, à leur première extrémité 2, de moyens 21 de maintien d'un élément de la ligne d'échappement, ces moyens étant selon l'exemple constitués par des logements tubulaires de réception de tiges 14 solidaires de la ligne d'échappement 3.To maintain the line, the elastic elements 1 are each provided, at their first end 2, with means 21 for holding an element of the exhaust line, these means being, according to the example, constituted by tubular receiving housings of rods 14 secured to the exhaust line 3.

Selon l'exemple, les tiges sont les terminaisons d'un arceau 34 soudé sur la ligne 3 mais d'autres configurations telles que des tiges séparées soudées sur le catalyseur sont bien entendu possibles.According to the example, the rods are the ends of a hoop 34 welded on the line 3 but other configurations such as separate rods welded to the catalyst are of course possible.

A leur seconde extrémité 4, les éléments élastiques sont pourvus de moyens 41 de fixation du dispositif sur l'élément structurel 11 du véhicule, ces moyens étant selon l'exemple des tiges filetées soudées ou serties sur la platine de fixation 6.At their second end 4, the elastic elements are provided with means 41 for fixing the device on the structural element 11 of the vehicle, these means being, according to the example, threaded rods welded or crimped onto the fixing plate 6.

Entre leur première et seconde extrémités 2, 4, les éléments élastiques 1 sont chacun pourvu d'une section intermédiaire élastique 5, cette section intermédiaire étant en utilisation alignée dans la direction verticale Z avec les première et seconde extrémités de l'élément élastique la portant.Between their first and second ends 2, 4, the elastic elements 1 are each provided with an elastic intermediate section 5, this intermediate section being in use aligned in the vertical direction Z with the first and second ends of the elastic element carrying it. .

Le dispositif selon l'invention comporte en outre une platine de fixation 6 pourvue de piétements 7 recevant les secondes extrémités 4 des éléments élastiques 1.The device according to the invention further comprises a mounting plate 6 provided with legs 7 receiving the second ends 4 of the elastic elements 1.

Les éléments élastiques dans le cadre de l'invention sont avantageusement en matériau élastomère et surmoulés sur la platine, la seconde extrémité 4 des éléments élastiques étant constituée d'un pied surmoulé sur le piétement 7 la recevant.The elastic elements in the context of the invention are advantageously made of elastomer material and overmolded on the plate, the second end 4 of the elastic elements being constituted by a molded foot on the base 7 receiving it.

Toujours selon l'invention, les piétements de la platine sont reliés par un pontet 8 pourvu d'un plateau central 12 et de deux branches inclinées 13 reliant les piétements 7 aux extrémités du plateau central de la platine de fixation 6.Still according to the invention, the legs of the plate are connected by a bridge 8 provided with a central plate 12 and two inclined branches 13 connecting the legs 7 to the ends of the central plate of the mounting plate 6.

Pour permettre aux éléments élastiques de remplir leur fonction de centrage de la ligne et d'encaisser les efforts selon l'axe transversal Y, les éléments élastiques 1, solidaires de la platine de fixation 6 par leur seconde extrémité 4 comportent, au niveau de leur section intermédiaire 5, un premier jambage 9 reliant la première extrémité 2 des éléments élastiques 1 au pontet 8.To allow the elastic elements to fulfill their function of centering the line and to absorb the forces along the transverse axis Y, the elastic elements 1, secured to the fixing plate 6 by their second end 4 comprise, at their intermediate section 5, a first leg 9 connecting the first end 2 of the elastic elements 1 to the bridge 8.

Cette configuration renforce la fixation de la ligne d'échappement par rapport à un dispositif support constitué de deux éléments élastiques indépendants comme le dispositif de la figure 1 et définit précisément l'entraxe entre les logements tubulaires 21 recevant les tiges 14.This configuration reinforces the attachment of the exhaust line with respect to a support device consisting of two independent elastic elements such as the device of FIG. 1 and precisely defines the spacing between the tubular housings 21 receiving the rods 14.

Pour accroître la résistance du dispositif aux efforts selon les axes longitudinal X et transversal Y, le premier jambage 9 de chaque élément élastique 1 est conformé en jambe de force inclinée par rapport à un axe A passant par les première et seconde extrémités 2, 4 de l'élément élastique 1 le portant.To increase the resistance of the device to the forces along the longitudinal X and transverse Y axes, the first leg 9 of each elastic element 1 is shaped as an inclined strut relative to an axis A passing through the first and second ends 2, 4 of the elastic element 1 carrying it.

Ce jambage 9 possède une raideur importante et peut être réalisé avec une section droite, comme représenté en figures 5 et 6, dans le cas où l'on recherche une très grande rigidité de fixation, ou, comme représenté en figure 3 posséder une section amincie dans sa partie intermédiaire pour adapter la raideur de l'élément élastique en fonction de la masse de la ligne et des fréquences vibratoires à atténuer.This leg 9 has a high stiffness and can be made with a cross section, as shown in Figures 5 and 6, in the case where a very high fixation rigidity is sought, or, as shown in Figure 3 have a thinned section in its intermediate part to adapt the stiffness of the elastic element as a function of the mass of the line and vibratory frequencies to be attenuated.

Par ailleurs, la première extrémité 2 est reliée à la section intermédiaire 5 par un pontage 5a symétrique ou non par rapport audit axe A, c'est-à-dire dont les cotes de largeur respectivement a et b sur la figure 4 par rapport à l'axe A sont identiques ou non.Moreover, the first end 2 is connected to the intermediate section 5 by a bridging 5a symmetrical or not with respect to said axis A, that is to say whose dimensions of width respectively a and b in Figure 4 with respect to the axis A are identical or not.

Pour la réalisation du dispositif support, les deux éléments élastiques sont constitués à partir d'un moule commun en une pièce élastomère unique surmoulée sur la platine 6, le surmoulage sur le pontet 8 étant de faible épaisseur et ne participant pas à l'élasticité des éléments 1.For the production of the support device, the two elastic elements are constituted from a common mold in a single elastomer piece overmolded on the plate 6, the overmolding on the bridge 8 being thin and not participating in the elasticity of the elements 1.

Selon l'exemple représenté notamment en figure 5, les éléments élastiques 1 sont symétriques par rapport à un plan P médian sécant avec la platine 6 et perpendiculaire à cette dernière.According to the example shown in particular in Figure 5, the elastic elements 1 are symmetrical with respect to a median plane P secant with the plate 6 and perpendicular to the latter.

Selon la figure 4 pour laquelle le dispositif est vu de face, le premier jambage 9 de chaque élément élastique est incliné, ce, selon un axe B pour l'élément de gauche et un axe C pour l'élément de droite les axes B et C s'intersectant dans le plan P.According to FIG. 4 for which the device is seen from the front, the first leg 9 of each elastic element is inclined, along an axis B for the left-hand element and an axis C for the right-hand element, the axes B and C intersecting in the plane P.

L'inclinaison du premier jambage 9 est définie en fonction de la différence de hauteur entre les piétements 7 et le plateau central 12 du pontet et de la résistance que l'on souhaite obtenir selon l'axe Y. Selon l'exemple, les premiers jambages 9 sont reliés au pontet 8 au voisinage de la liaison du plateau central 12 avec les branches inclinées 13.The inclination of the first leg 9 is defined as a function of the difference in height between the legs 7 and the central plate 12 of the bridge and the resistance that one wishes to obtain along the axis Y. According to the example, the first jambs 9 are connected to the bridge 8 in the vicinity of the connection of the central plate 12 with the inclined branches 13.

Les éléments élastiques dans le mode de réalisation représenté comportent un second jambage 10 reliant la première et la seconde extrémité 2, 4 des éléments élastiques 1 au niveau de leur section intermédiaire 5.The elastic elements in the embodiment shown comprise a second leg 10 connecting the first and the second end 2, 4 of the elastic elements 1 at their intermediate section 5.

Le second jambage 10 comporte deux branches 10a, 10b reliées par un coude, ce qui permet d'adapter l'élasticité du dispositif selon l'axe vertical Z.The second leg 10 comprises two branches 10a, 10b connected by a bend, which makes it possible to adapt the elasticity of the device along the vertical axis Z.

Ainsi, le premier jambage 9 et le second jambage 10 constituent une structure élastique dissymétrique qui offre une grande latitude d'adaptation de la raideur des éléments élastiques selon les axes X, Y et Z.Thus, the first leg 9 and the second leg 10 constitute an asymmetrical elastic structure which offers a great flexibility in adapting the stiffness of the elastic elements along the X, Y and Z axes.

La section du jambage 10 peut être, comme celle du jambage 9, accrue ou réduite afin d'adapter la raideur desdits éléments élastiques 1.The section of the leg 10 can be, like that of the leg 9, increased or reduced in order to adapt the stiffness of said elastic elements 1.

Pour limiter les mouvements verticaux de la ligne, la seconde extrémité 4 comporte un pied 42 formant butée pour la première extrémité 2 de l'élément élastique 1 au cas où la section intermédiaire 5 viendrait à être fortement comprimée. La largeur (cote c, figure 4) par rapport à l'axe A du pied 42 peut être modifiée à des fins d'adaptation de la raideur.To limit the vertical movements of the line, the second end 4 comprises a foot 42 forming a stop for the first end 2 of the elastic element 1 in the case where the intermediate section 5 would be to be strongly compressed. The width (dimension c, FIG. 4) with respect to the axis A of the foot 42 may be modified to adapt the stiffness.

En fonction des applications véhicule, le pontet 8 peut constituer un support de fixation d'un écran thermique 15 se positionnant de part et d'autre de la ligne d'échappement 3 et entre les premières extrémités 2 des éléments élastiques 1.Depending on the vehicle applications, the bridge 8 may constitute a support for fixing a heat shield 15 positioned on either side of the exhaust line 3 and between the first ends 2 of the elastic elements 1.

Un tel écran thermique est notamment représenté en figure 5. Dans cette configuration, la raideur des éléments élastiques et leur parfait positionnement selon l'axe Y par les premiers jambages centrent la ligne au milieu de l'écran 15 ce qui évite tout contact ou chocs de la ligne avec cet écran.Such a heat shield is in particular represented in FIG. 5. In this configuration, the stiffness of the elastic elements and their perfect positioning along the Y axis by the first legs center the line in the middle of the screen 15, which prevents any contact or impact. of the line with this screen.

Dans l'application représentée, le dispositif est fixé par les moyens de fixation 41 sur le berceau moteur de sorte que les premières extrémités 2 soient au dessus des secondes extrémités 4.In the application shown, the device is fixed by the fastening means 41 on the engine cradle so that the first ends 2 are above the second ends 4.

La fixation du dispositif est réalisée par les tiges filetées dépassant de la platine 6 à l'opposée desdites premières extrémités 2 et reçues dans l'élément structurel 11 du véhicule puis maintenues avec des écrous.Fixing the device is performed by the threaded rods protruding from the plate 6 to the opposite of said first ends 2 and received in the structural element 11 of the vehicle and then held with nuts.

Ainsi le dispositif support selon l'invention offre une excellente résistance aux efforts selon les trois axes, une très bonne précision de positionnement de la ligne du fait de l'appui du premier jambage sur le pontet et peut être adapté en raideur en réduisant localement la section des jambages et en adaptant la géométrie du second jambage des éléments élastiques.Thus the support device according to the invention offers excellent resistance to forces along the three axes, very good positioning accuracy of the line due to the support of the first leg on the bridge and can be adapted to stiffness by locally reducing the section of the jambs and adapting the geometry of the second leg of the elastic elements.

L'invention n'est pas limitée aux exemples de réalisation représentés et notamment il est bien entendu possible d'utiliser le dispositif pour la fixation de l'arrière de la ligne, le dispositif étant alors utilisé la tête en bas.The invention is not limited to the embodiments shown and in particular it is of course possible to use the device for fixing the rear of the line, the device then being used upside down.

Claims (13)

Dispositif support de ligne d'échappement (3) comportant au moins deux éléments élastiques (1), disposés de part et d'autre de la ligne d'échappement (3), pourvus chacun, à une première extrémité (2), de moyens (21) de maintien d'un élément de la ligne d'échappement (3), à une seconde extrémité (4), de moyens (41) de fixation du dispositif sur un élément structurel (11) du véhicule et pourvus d'une section intermédiaire élastique (5) entre leurs première et seconde extrémités (2, 4), le dispositif comportant en outre une platine de fixation (6), pourvue de piétements (7) reliés par un pontet et recevant les secondes extrémités (4) des éléments élastiques (1), caractérisé en ce que lesdits éléments élastiques (1) sont solidaires de la platine de fixation (6) par leur seconde extrémité (4) et comportent, au niveau de leur section intermédiaire (5), un premier jambage (9) reliant la première extrémité (2) des éléments élastiques (1) au pontet (8).Exhaust line support device (3) comprising at least two elastic elements (1), arranged on either side of the exhaust line (3), each provided, at a first end (2), with means (21) for maintaining an element of the exhaust line (3), at a second end (4), means (41) for fixing the device on a structural element (11) of the vehicle and provided with a intermediate elastic section (5) between their first and second ends (2, 4), the device further comprising a fixing plate (6), provided with legs (7) connected by a bridge and receiving the second ends (4) of elastic elements (1), characterized in that said elastic elements (1) are integral with the fixing plate (6) by their second end (4) and comprise, at their intermediate section (5), a first leg ( 9) connecting the first end (2) of the elastic elements (1) to the bridge ( 8). Dispositif support de ligne d'échappement selon la revendication 1 caractérisé en ce que la seconde extrémité (4) des éléments élastiques est constituée d'un pied (42) surmoulé sur le piétement (7) la recevant.Exhaust line support device according to claim 1 characterized in that the second end (4) of the elastic elements consists of a foot (42) overmolded on the base (7) receiving it. Dispositif support de ligne d'échappement selon la revendication 1 ou 2 caractérisé en ce que le premier jambage (9) de chaque élément élastique (1) constitue une jambe de force inclinée par rapport à un axe A passant par les première et seconde extrémités (2, 4) de l'élément élastique (1) le portant.Exhaust line support device according to claim 1 or 2, characterized in that the first leg (9) of each elastic element (1) constitutes a strut inclined with respect to an axis A passing through the first and second ends ( 2, 4) of the elastic element (1) carrying it. Dispositif support de ligne d'échappement selon l'une quelconque des revendications précédentes caractérisé en ce que les éléments élastiques (1) sont symétriques par rapport à un plan P sécant avec la platine (6) et perpendiculaire à cette dernière, le premier jambage (9) de chaque élément élastique étant incliné selon un axe B, C sécant audit plan PExhaust line support device according to any one of the preceding claims, characterized in that the elastic elements (1) are symmetrical with respect to a plane P intersecting with the plate (6) and perpendicular thereto, the first leg ( 9) of each elastic element being inclined along an axis B, C intersecting said plane P Dispositif support de ligne d'échappement selon l'une quelconque des revendications précédentes caractérisé en ce que la section intermédiaire (5) de chaque élément élastique (1) comporte un second jambage (10) reliant la première et la seconde extrémité (2, 4) des éléments élastiques (1).Exhaust line support device according to any one of the preceding claims, characterized in that the intermediate section (5) of each elastic element (1) comprises a second leg (10) connecting the first and the second end (2, 4). ) elastic elements (1). Dispositif support de ligne d'échappement selon la revendication 5 caractérisé en ce que le premier jambage (9) et le second jambage (10) constituent une structure élastique dissymétrique.Exhaust line support device according to claim 5 characterized in that the first leg (9) and the second leg (10) constitute an asymmetrical elastic structure. Dispositif support de ligne d'échappement selon l'une quelconque des revendications précédentes caractérisé en ce que le pontet (8) comporte un plateau central (12) et deux branches inclinées (13) reliant les piétements (7) aux extrémités du plateau central de la platine de fixation (6).Exhaust line support device according to any one of the preceding claims characterized in that the bridge (8) comprises a central plate (12) and two inclined branches (13) connecting the legs (7) to the ends of the central plate of the mounting plate (6). Dispositif support de ligne d'échappement selon la revendication 7 caractérisé en ce que les premiers jambages (9) sont reliés au pontet (8) au voisinage de la liaison du plateau central (12) avec les branches inclinées (13).Exhaust line support device according to claim 7 characterized in that the first legs (9) are connected to the bridge (8) in the vicinity of the connection of the central plate (12) with the inclined branches (13). Dispositif support de ligne d'échappement selon l'une quelconque des revendications précédentes caractérisé en ce que les moyens de maintien (21) sont constitués par des logements tubulaires de réception de tiges (14) solidaires de la ligne d'échappement (3).Exhaust line support device according to any one of the preceding claims, characterized in that the holding means (21) consist of tubular receiving housing rods (14) integral with the exhaust line (3). Dispositif support de ligne d'échappement selon l'une quelconque des revendications précédentes caractérisé en ce que le pontet (8) constitue un support de fixation d'un écran thermique (15) se positionnant de part et d'autre de la ligne d'échappement (3) et entre les premières extrémités (2) des éléments élastiques (1).Exhaust line support device according to any one of the preceding claims, characterized in that the bridge (8) constitutes a support for fixing a heat shield (15) positioned on either side of the line of exhaust (3) and between the first ends (2) of the elastic elements (1). Dispositif support de ligne d'échappement selon l'une quelconque des revendications 1 à 10, caractérisé en ce que le premier (9) et le second (10) jambage présentent une section appropriée pour adapter la raideur desdits éléments élastiques (1).Exhaust line support device according to any one of claims 1 to 10, characterized in that the first (9) and the second (10) leg have a section adapted to adapt the stiffness of said elastic members (1). Dispositif support de ligne d'échappement selon les revendications 3 et 5, caractérisé en ce que ladite extrémité (2) est reliée auxdits premier et second jambages (9, 10) par un pontage (5a) symétrique ou non par rapport audit axe (A) passant par les première et seconde extrémités (2, 4), à des fins d'adaptation de raideur.Exhaust line support device according to claims 3 and 5, characterized in that said end (2) is connected to said first and second legs (9, 10) by a bridging (5a) symmetrical or not with respect to said axis (A passing through the first and second ends (2, 4) for stiffness adaptation purposes. Dispositif support de ligne d'échappement selon les revendications 2 et 3, caractérisé en ce que la largeur (c) du pied (42) par rapport audit axe (A) passant par les première et seconde extrémités (2, 4) est réglable à des fins d'adaptation de raideur.Exhaust line support device according to claims 2 and 3, characterized in that the width (c) of the foot (42) with respect to said axis (A) passing through the first and second ends (2, 4) is adjustable to stiffness adaptation purposes.
EP05103503A 2005-04-28 2005-04-28 Support for an exhaust line Active EP1717424B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE602005027056T DE602005027056D1 (en) 2005-04-28 2005-04-28 Fastening device of an exhaust gas line
ES05103503T ES2362584T3 (en) 2005-04-28 2005-04-28 SUPPORT DEVICE FOR EXHAUST DRIVING.
EP09178489A EP2177732A1 (en) 2005-04-28 2005-04-28 Support for an exhaust line
AT05103503T ATE503090T1 (en) 2005-04-28 2005-04-28 FASTENING DEVICE FOR AN EXHAUST TRACK
EP05103503A EP1717424B1 (en) 2005-04-28 2005-04-28 Support for an exhaust line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05103503A EP1717424B1 (en) 2005-04-28 2005-04-28 Support for an exhaust line

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP09178489.2 Division-Into 2009-12-09

Publications (2)

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EP1717424A1 true EP1717424A1 (en) 2006-11-02
EP1717424B1 EP1717424B1 (en) 2011-03-23

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EP05103503A Active EP1717424B1 (en) 2005-04-28 2005-04-28 Support for an exhaust line
EP09178489A Withdrawn EP2177732A1 (en) 2005-04-28 2005-04-28 Support for an exhaust line

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP09178489A Withdrawn EP2177732A1 (en) 2005-04-28 2005-04-28 Support for an exhaust line

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AT (1) ATE503090T1 (en)
DE (1) DE602005027056D1 (en)
ES (1) ES2362584T3 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2591955A1 (en) * 1985-12-23 1987-06-26 Fiat Auto Spa Support device for exhaust pipes of endothermic engines, especially intended to support the exhaust silencer of a vehicle
DE4312504C1 (en) * 1993-04-16 1994-10-06 Bayerische Motoren Werke Ag Suspension device for an exhaust system of a motor vehicle
EP0816734A2 (en) * 1996-07-02 1998-01-07 Draftex Industries Limited Resilient support
EP1004467A2 (en) * 1998-11-28 2000-05-31 Volkswagen Aktiengesellschaft Device for fixing an exhaust system to a motor vehicle and resilient fixing device for such an exhaust system
DE19953995A1 (en) * 1999-11-10 2001-05-17 Volkswagen Ag Exhaust gas system with heat screening for vehicle including exhaust gas conducting element and heat screening to be arranged between exhaust gas conducting element and bodywork of vehicle spaced at distance from exhaust conducting element
US20010047897A1 (en) * 1999-12-01 2001-12-06 Steenackers Pieter Delfina Exhaust system for a motor vehicle and motor vehicle with an exhaust system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2591955A1 (en) * 1985-12-23 1987-06-26 Fiat Auto Spa Support device for exhaust pipes of endothermic engines, especially intended to support the exhaust silencer of a vehicle
DE4312504C1 (en) * 1993-04-16 1994-10-06 Bayerische Motoren Werke Ag Suspension device for an exhaust system of a motor vehicle
EP0816734A2 (en) * 1996-07-02 1998-01-07 Draftex Industries Limited Resilient support
EP1004467A2 (en) * 1998-11-28 2000-05-31 Volkswagen Aktiengesellschaft Device for fixing an exhaust system to a motor vehicle and resilient fixing device for such an exhaust system
DE19953995A1 (en) * 1999-11-10 2001-05-17 Volkswagen Ag Exhaust gas system with heat screening for vehicle including exhaust gas conducting element and heat screening to be arranged between exhaust gas conducting element and bodywork of vehicle spaced at distance from exhaust conducting element
US20010047897A1 (en) * 1999-12-01 2001-12-06 Steenackers Pieter Delfina Exhaust system for a motor vehicle and motor vehicle with an exhaust system

Also Published As

Publication number Publication date
EP2177732A1 (en) 2010-04-21
ATE503090T1 (en) 2011-04-15
EP1717424B1 (en) 2011-03-23
ES2362584T3 (en) 2011-07-07
DE602005027056D1 (en) 2011-05-05

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