EP3330509B1 - Silencieux d'échappement et son procédé de fabrication - Google Patents

Silencieux d'échappement et son procédé de fabrication Download PDF

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Publication number
EP3330509B1
EP3330509B1 EP17203291.4A EP17203291A EP3330509B1 EP 3330509 B1 EP3330509 B1 EP 3330509B1 EP 17203291 A EP17203291 A EP 17203291A EP 3330509 B1 EP3330509 B1 EP 3330509B1
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EP
European Patent Office
Prior art keywords
exhaust gas
gas pipe
muffler
area
circumferential wall
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.)
Active
Application number
EP17203291.4A
Other languages
German (de)
English (en)
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EP3330509A1 (fr
Inventor
Ian Barret
Laurent Cazeneuve
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.)
Eberspaecher Exhaust Technology GmbH and Co KG
Original Assignee
Eberspaecher Exhaust Technology GmbH and Co KG
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 of EP3330509A1 publication Critical patent/EP3330509A1/fr
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Publication of EP3330509B1 publication Critical patent/EP3330509B1/fr
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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
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/083—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using transversal baffles defining a tortuous path for the gases or successively throttling gas flow
    • 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
    • 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
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • 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
    • F01N13/18—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
    • 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
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • 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
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/22—Methods or apparatus for fitting, inserting or repairing different elements by welding or brazing
    • 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
    • F01N2470/04—Tubes being perforated characterised by shape, disposition or dimensions of apertures
    • 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
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • F01N2470/08—Gas passages being formed between the walls of an outer shell and an inner chamber
    • 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
    • F01N2470/18—Structure or shape of gas passages, pipes or tubes the axis of inlet or outlet tubes being other than the longitudinal axis of apparatus

Definitions

  • the present invention relates to an exhaust gas silencer for an exhaust system of an internal combustion engine used, for example, in a vehicle as a drive unit.
  • an exhaust silencer is known.
  • an exhaust pipe holding opening is provided in association with two inlet pipes in a peripheral wall of a muffler housing, in the region of which a respective inlet pipe is fixed on the peripheral wall of the muffler housing.
  • a support plate which is penetrated by and supports the inlet pipe is provided in a housing interior of the muffler housing.
  • the inlet pipe which is constructed in several parts, for example, is curved approximately at right angles.
  • An exhaust silencer according to the preamble of claim 1 is known from the JP 2000 303822 A known.
  • the EP 2 682 575 A1 discloses an exhaust gas purification device with a housing with a peripheral wall, in which two openings are provided for receiving an exhaust pipe.
  • the exhaust pipe is closed in one of its end areas by an end cap.
  • the exhaust muffler according to the invention is further characterized in that two exhaust pipe holding openings are provided in the peripheral wall in association with at least one exhaust pipe, that the exhaust pipe is fixed to the peripheral wall in the area of each exhaust pipe holding opening, that the exhaust pipe is preferably closed at one end region by a closing element, and that in a length region extending between the two exhaust pipe holding openings, the at least one exhaust pipe has at least one exhaust gas passage opening.
  • a stable and gas-tight closure is ensured by the fact that the at least one exhaust pipe is fixed to the circumferential wall in the area of at least one, preferably each of the associated exhaust pipe holding openings, preferably by welding, and that the closure element is inserted into the end region of the at least one exhaust pipe and it is materially fixed, preferably by welding.
  • one of the exhaust pipe holding openings assigned to the at least one exhaust pipe has a smaller cross-sectional dimension, preferably a smaller inner diameter, than the other exhaust pipe holding opening assigned to this exhaust pipe, and the exhaust pipe points between them on the peripheral wall in the area of the exhaust pipe holding openings defined a reduction in cross section.
  • an embodiment that is easy to implement and prevents mutual interference with components provided in the interior of the housing can be achieved in that at least one, preferably each, holding edge region is designed to protrude outward from the housing interior, and / or that at least one, preferably each, holding edge region is provided as a passage is.
  • the exhaust gas silencer according to the invention is preferably constructed such that the end region of the at least one exhaust pipe is positioned in the region of one of the exhaust pipe holding openings assigned to this exhaust pipe, and that another end region of the at least one exhaust pipe is located in the region of the other exhaust pipe holding opening associated with this exhaust pipe or outside the housing interior.
  • a plurality of exhaust gas passage openings is provided on the at least one exhaust gas pipe, at least some, preferably all, of the exhaust gas passage openings being elongated in the direction of an exhaust pipe longitudinal axis of this exhaust pipe or / and at least one ring formation of exhaust gas passage openings which follow one another in the circumferential direction around the longitudinal axis of the exhaust pipe is provided.
  • At least one intermediate wall is provided in the housing interior, the exhaust pipe holding openings assigned to the at least one exhaust pipe being arranged in the direction of the housing axis between two intermediate walls or between an intermediate wall and an end wall.
  • the at least one exhaust pipe between its areas defined in the area of the exhaust pipe holding openings assigned to this exhaust pipe on the peripheral wall is not supported with respect to the muffler housing and / or is connected to the muffler housing.
  • Such additional support is not required in the exhaust silencer according to the invention, since the exhaust pipe is stably supported in two areas with respect to the circumferential wall of the silencer housing.
  • At least one exhaust pipe is an inlet pipe and that at least one outlet pipe leading out of the housing interior is provided. At least one outlet pipe can be carried on an end wall.
  • measure c) at the same time fixes the at least one exhaust pipe on the peripheral wall and the end element on the exhaust pipe or / and the peripheral wall by material closure.
  • the peripheral wall of the silencer housing is provided as an essentially plate-like blank and the exhaust pipe holding openings assigned to the at least one exhaust pipe before the plate-like blank is formed into an essentially cylindrical configuration on the Blank are provided, preferably as a thread.
  • the at least one exhaust pipe can be fixed on the circumferential wall in the region of the exhaust pipe holding openings assigned to this exhaust pipe by welding.
  • the present invention further relates to an exhaust system for an internal combustion engine, preferably in a vehicle, comprising at least one exhaust gas silencer according to the invention, which is preferably produced using a method according to the invention.
  • the exhaust gas muffler 10 comprises a muffler housing 12 with an essentially cylindrical peripheral wall 14 elongated in the direction of a housing axis L, and an end wall 20, 22 on each of the two axial end regions 16, 18 of the peripheral wall 14.
  • a housing interior 24 of the muffler housing 12 in the direction of the Following the housing axis L, a plurality of intermediate walls 26, 28 are provided, which subdivide the housing interior 24 into a plurality of chambers 34, 36, 38 which are connected to one another, for example through openings 30 in the intermediate walls 26, 28 or / and through one or more connecting pipes 32.
  • Exhaust gas expelled by an internal combustion engine is introduced into the housing interior 24 via an inlet pipe 40 which is described in detail below and which provides an exhaust pipe.
  • the exhaust gas is discharged from the muffler housing 12, for example to the environment or a downstream part of the exhaust system, through an outlet pipe 42 which passes through the end wall 22 and is, for example, integrally formed with the connecting pipe 32 or adjoins this.
  • each of the exhaust pipe holding openings 44, 46 is provided in the peripheral wall 14 of the muffler housing 12.
  • an essentially cylindrical holding edge area 48, 50 which preferably completely surrounds the respective exhaust pipe holding opening 44, 46.
  • the inlet pipe 40 is inserted into the associated exhaust pipe holding openings 44, 46 in the peripheral wall 14, so that it is positioned with its upstream end area 52 in the area of the holding edge area 48 of the exhaust pipe holding opening 44 and with its downstream end area 54 in the area of the holding edge area 50 of the exhaust pipe holding opening 46 is positioned.
  • the inlet pipe 40 has, for example, a step-like cross-sectional reduction 56 between its end regions 52, 54 positioned in the region of the peripheral wall 14 or the exhaust pipe holding openings 44, 46, the inlet pipe 40 basically preferably having a circular cross-sectional geometry.
  • the exhaust pipe holding opening 46 receiving the downstream end region 54 of the inlet pipe 40 is designed with a smaller internal dimension, for example a smaller inner diameter, than the exhaust pipe holding opening 44 receiving the upstream end region 52.
  • the exhaust pipe holding openings 44, 46 are dimensioned accordingly the dimensioning of the inlet pipe 40 in its two end regions 52, 54 is coordinated so that after inserting the inlet pipe 40 into the exhaust pipe holding openings 44, 46 one is possible a precise, essentially play-free fit of the inlet pipe 40 in the exhaust pipe holding openings 44, 46 is achieved.
  • a cap-like or pot-like closure element 58 with a bottom region 60 and a substantially cylindrical circumferential region 62, which is fitted into the downstream end region 54 of the inlet pipe 40 and is essentially free of play, is inserted into the inlet pipe 40.
  • the Fig. 4 illustrates that the holding edge region 50 of the exhaust pipe holding opening 46, the downstream end region 54 of the inlet pipe 40 and the peripheral region 62 of the closure element 58 are positioned to overlap one another in the direction of an inlet pipe longitudinal axis A.
  • the inlet pipe 40 is preferably fixed to the peripheral wall 14 by welding to the holding edge region 48, in order to achieve a stable and gas-tight closure of the housing interior 24 in this end region 52 as well, to connect the inlet pipe 40 to the peripheral wall 14 of the muffler housing 12 .
  • the inlet pipe 40 has a multiplicity of exhaust gas passage openings 66.
  • the exhaust gas passage openings 66 which are preferably elongated in the direction of the exhaust pipe longitudinal axis A and also extend in this direction, are for providing a large total cross-sectional area in a plurality of ring formations 68 which follow one another in the direction of the exhaust pipe longitudinal axis A and each have a plurality of exhaust gas passage openings which follow one another in the circumferential direction around the exhaust pipe longitudinal axis A 66 arranged.
  • Exhaust muffler 10 shown can be proceeded so that the peripheral wall 14 is first provided as a plate-like sheet metal blank.
  • the exhaust pipe holding openings 44, 46 assigned to the inlet pipe 40 can then be provided in this plate-like sheet metal blank, for example as passages or as openings made by perforation.
  • the peripheral wall 14 for the construction of the muffler housing is wound around the components to be accommodated therein in a substantially cylindrical, tube-like configuration, so that the peripheral wall surrounds the intermediate walls 26, 28 to be provided therein and the two exhaust pipe holding openings 44, 46 are positioned essentially opposite one another.
  • the two end walls 20, 22 and the connecting pipe 32 or the outlet pipe 42 can also be installed, for example.
  • the inlet pipe 40 with its downstream end region 54 is first inserted into the mutually opposite exhaust pipe holding openings 44, 46 through the exhaust pipe holding opening 44 and then into the exhaust pipe holding opening 46. Even before inserting the inlet pipe 40 into the exhaust pipe holding openings 44, 46 or with the inlet pipe 40 already inserted into the exhaust pipe holding openings 44, 46, the closure element 58 is fitted into the downstream end region 54 of the inlet pipe 40.
  • the inlet pipe 40 is connected to the peripheral wall 14, in particular the retaining edge regions 48, 50 preferably integrally provided thereon, preferably by welding, with the closing element 58 on the inlet pipe 40 and, respectively, at the downstream end region 54 at the same time is fixed to the peripheral wall 14.
  • the inlet pipe 40 then lies with its length region 64 having the exhaust gas passage openings 66 in the chamber 36 formed between the two intermediate walls 26, 28, so that exhaust gas flowing in via the inlet pipe 40 passes through the exhaust gas passage openings 66 into the chamber 36 and out of the chamber 36 into the chambers 34, 38 can flow.
  • Exhaust muffler 10 shown can be modified in various ways without departing from the principles of the present invention.
  • several inlet pipes can be provided, of which preferably, but not necessarily, several, preferably all, can be fixed to the peripheral wall in the manner described above.
  • Several outlet pipes can also be provided.
  • one or more outlet pipes can lead out of the muffler housing in the region of the peripheral wall and can be fixed to the peripheral wall as exhaust pipes in the manner described above.
  • the structure in the housing interior can be designed differently than in the Fig. 1-4 shown. More or fewer intermediate walls than the illustrated intermediate walls can be provided, and at least one exhaust pipe can be fixed to the peripheral wall between an intermediate wall and an end wall.
  • the inlet pipe or possibly the inlet pipes could also be designed such that its upstream end region is not positioned in the region of the peripheral wall of the muffler housing, but extends out of the muffler housing and extends with this length range outside the muffler housing to the exhaust gas muffler leading leading tube provides.
  • the closure element can also be designed or dimensioned such that it is not inserted into the end region of the inlet pipe, but rather can be positioned with a circumferential region surrounding the retaining edge region on the circumferential wall and the exhaust pipe holding opening provided in the circumferential wall is fixed on the circumferential wall, covering it from the outside can.
  • the connection element can, for example, be offset with its bottom region in the direction upstream with respect to the downstream end region, so that it closes the inlet pipe somewhat away from its downstream end region.

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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)

Claims (15)

  1. Silencieux de gaz d'échappement pour un système d'échappement d'un moteur à combustion interne, comprenant :
    - un boîtier de silencieux (12) avec une paroi circonférentielle (14) allongée dans la direction d'un axe de boîtier (L) et avec une paroi d'extrémité (20, 22) à chaque zone d'extrémité axiale (16, 18) de la paroi circonférentielle (14), et
    - au moins un tuyau de gaz d'échappement (40) maintenu dans la zone d'une ouverture de support de tuyau de gaz d'échappement (44, 46) sur la paroi circonférentielle (14) et ouvert vers un intérieur de boîtier (24),
    dans lequel deux ouvertures de support de tuyau de gaz d'échappement (44, 46) sont prévues dans la paroi circonférentielle (14) en association avec au moins un tuyau de gaz d'échappement (40),
    dans lequel le tuyau de gaz d'échappement (40) est fixé à la paroi circonférentielle (14) dans la zone de chaque ouverture de support de tuyau de gaz d'échappement (44, 46),
    dans lequel le tuyau de gaz d'échappement (40) est fermé dans une zone d'extrémité (54) au moyen d'un élément de fermeture (58), et
    dans lequel ledit au moins un tuyau de gaz d'échappement (40) comporte au moins une ouverture de passage de gaz d'échappement (66) dans une zone de longueur (64) s'étendant entre les deux ouvertures de support de tuyau de gaz d'échappement (44, 46), et
    dans lequel ledit au moins un tuyau de gaz d'échappement (40) est fixé par liaison de matériau à la paroi circonférentielle (14) dans la zone d'au moins une ouverture de support de tuyau de gaz d'échappement (46) associée à ce tuyau de gaz d'échappement,
    caractérisé en ce que
    - l'élément de fermeture (58) est inséré dans la zone d'extrémité (54) dudit au moins un tuyau de gaz d'échappement (40) et y est fixé par liaison de matériau,
    - que l'une des ouvertures de support de tuyau de gaz d'échappement (44, 46) associée audit au moins un tuyau de gaz d'échappement (40) a une dimension en section transversale plus petite que l'autre ouverture de support de tuyau de gaz d'échappement (44, 46) associée à ce tuyau de gaz d'échappement (40), et
    - que le tuyau de gaz d'échappement (40) présente une réduction de section transversale entre ses zones fixées à la paroi circonférentielle (14) dans la zone des ouvertures de support de tuyau de gaz d'échappement (44, 46).
  2. Silencieux de gaz d'échappement selon la revendication 1, caractérisé en ce qu'une zone de bord de support (48, 50), faisant saillie de la paroi circonférentielle (14) et entourant l'ouverture de support de tuyau de gaz d'échappement (44, 46) de préférence sans interruption, est prévue dans la zone d'au moins une, de préférence de chacune des ouvertures de support de tuyau de gaz d'échappement (44, 46) associées audit au moins un tuyau de gaz d'échappement (40).
  3. Silencieux de gaz d'échappement selon la revendication 2, caractérisé en ce qu'au moins une, de préférence chaque zone de bord de support (48, 50) est configurée comme faisant saillie vers l'extérieur à partir de l'intérieur du boîtier (24), et/ou en ce qu'au moins une, de préférence chaque zone de bord de support (48, 50) est prévue comme passage.
  4. Silencieux de gaz d'échappement selon l'une des revendications précédentes, caractérisé en ce que ledit au moins un tuyau de gaz d'échappement (40) est fixé par liaison de matériau, de préférence par soudage, à la paroi circonférentielle (14) dans la zone de chacune des ouvertures de support de tuyau de gaz d'échappement (44, 46) associées à ce tuyau de gaz d'échappement, et/ou en ce que l'élément de fermeture (58) est fixé par soudage dans la zone d'extrémité (54) dudit au moins un tuyau de gaz d'échappement (40).
  5. Silencieux de gaz d'échappement selon l'une des revendications précédentes, caractérisé en ce que la zone d'extrémité (54) dudit au moins un tuyau de gaz d'échappement (40) est positionnée dans la zone de l'une des ouvertures de support de tuyau de gaz d'échappement associées à ce tuyau de gaz d'échappement (40), et en ce qu'une autre zone d'extrémité (52) dudit au moins un tuyau de gaz d'échappement (40) est située dans la zone de l'autre ouverture de support de tuyau de gaz d'échappement (44) associée à ce tuyau de gaz d'échappement (40) ou hors de l'intérieur de boîtier (24).
  6. Silencieux de gaz d'échappement selon l'une des revendications précédentes, caractérisé en ce qu'une pluralité d'ouvertures de passage de gaz d'échappement (66) sont prévues sur ledit au moins un tuyau de gaz d'échappement (40), au moins une partie des ouvertures de passage de gaz d'échappement (66), de préférence toutes les ouvertures de passage de gaz d'échappement, étant allongées dans la direction d'un axe longitudinal de tuyau de gaz d'échappement (A) de ce tuyau de gaz d'échappement (40) et/ou au moins une formation annulaire (68) des ouvertures de passage de gaz d'échappement (66) étant prévue en succession dans la direction circonférentielle autour de l'axe longitudinal (A) de tuyau de gaz d'échappement.
  7. Silencieux de gaz d'échappement selon l'une des revendications précédentes, caractérisé en ce qu'au moins une paroi intermédiaire (26, 28) est prévue à l'intérieur du boîtier (24), les ouvertures de support de tuyau de gaz d'échappement (44, 46) associées audit au moins un tuyau de gaz d'échappement (40) étant disposées dans la direction de l'axe de boîtier (L) entre deux parois intermédiaires (26, 28) ou entre une paroi intermédiaire (26, 28) et une paroi d'extrémité (20, 22).
  8. Silencieux de gaz d'échappement selon l'une des revendications précédentes, caractérisé en ce que ledit au moins un tuyau de gaz d'échappement (40) n'est pas supporté entre ses zones fixées à la paroi circonférentielle (14) dans la zone des ouvertures de support de tuyau de gaz d'échappement (44, 46) associées à ce tuyau de gaz d'échappement (40) au niveau du boîtier de silencieux (12) et/ou n'est pas relié au boîtier de silencieux (12).
  9. Silencieux de gaz d'échappement selon l'une des revendications précédentes, caractérisé en ce qu'au moins un tuyau de gaz d'échappement (40) est un tuyau d'entrée (40) et qu'au moins un tuyau de sortie (42) sortant de l'intérieur de boîtier (24) est prévu.
  10. Silencieux de gaz d'échappement selon la revendication 9, caractérisé en ce qu'au moins un tuyau de sortie (42) est porté à une paroi d'extrémité (22).
  11. Procédé de fabrication d'un silencieux de gaz d'échappement selon l'une des revendications précédentes, comprenant les étapes suivantes
    a) fourniture du boîtier de silencieux (12) avec deux ouvertures de support de tuyau de gaz d'échappement (44, 46) en association avec au moins un tuyau de gaz d'échappement (40) à fixer sur le boîtier de silencieux (12) dans la paroi circonférentielle (14),
    b) insertion dudit au moins un tuyau de gaz d'échappement (40) dans les ouvertures de support (44, 46) prévues dans la paroi circonférentielle (14) en association avec ce tuyau de gaz d'échappement (40),
    c) la fixation d'au moins un tuyau de gaz d'échappement (40) sur la paroi circonférentielle (14) dans la zone des ouvertures de support de tuyau de gaz d'échappement (44, 46) associées à ce tuyau de gaz d'échappement (40), et
    d) disposition de l'élément de fermeture (58) dans la zone d'extrémité (54) dudit au moins un tuyau de gaz d'échappement (40) avant l'étape b) et/ou l'étape c), caractérisé en ce que dans l'étape c), ledit au moins un tuyau de gaz d'échappement (40) est fixé par liaison de matériau dans sa zone d'extrémité (54) à la paroi circonférentielle (14), et simultanément l'élément de fermeture (58) est fixé par liaison de matériau au tuyau de gaz d'échappement (40) et/ou à la paroi circonférentielle (14).
  12. Procédé selon la revendication 11, caractérisé en ce que, dans l'étape a), la paroi circonférentielle (14) du boîtier de silencieux (12) est fournie sous la forme d'une ébauche essentiellement en forme de feuille et les ouvertures de support de tuyau de gaz d'échappement (44, 46) associées audit au moins un tuyau de gaz d'échappement (40) sont fournies au niveau de l'ébauche, de préférence sous la forme de passages, avant le façonnage de l'ébauche en forme de feuille en une configuration essentiellement cylindrique.
  13. Procédé selon la revendication 11 ou 12, caractérisé en ce que dans l'étape c), ledit au moins un tuyau de gaz d'échappement (40) est fixé par soudage sur la paroi circonférentielle (14) dans la zone des ouvertures de support de tuyau de gaz d'échappement (44, 46) associées à ce tuyau de gaz d'échappement (40).
  14. Procédé selon l'une des revendications 11 à 13, caractérisé en ce que dans l'étape c), ledit au moins un tuyau de gaz d'échappement (40) est fixé par soudage, dans sa zone d'extrémité (54), à la paroi circonférentielle (14), et l'élément de fermeture (58) est fixé par soudage, au tuyau de gaz d'échappement (40) et/ou à la paroi circonférentielle (14).
  15. Système d'échappement pour un moteur à combustion interne, de préférence dans un véhicule, comprenant au moins un silencieux de gaz d'échappement (10) selon l'une des revendications 1 à 10, de préférence fabriqué selon un procédé selon l'une des revendications 11 à 14.
EP17203291.4A 2016-11-30 2017-11-23 Silencieux d'échappement et son procédé de fabrication Active EP3330509B1 (fr)

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DE102016123139.8A DE102016123139A1 (de) 2016-11-30 2016-11-30 Abgasschalldämpfer und Verfahren zu dessen Herstellung

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DE102020109817A1 (de) * 2020-04-08 2021-10-14 Purem GmbH Einsatzbaugruppe für einen Schalldämpfer einer Abgasanlage einer Brennkraftmaschine

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CN108119216B (zh) 2021-05-11
US10815847B2 (en) 2020-10-27
EP3330509A1 (fr) 2018-06-06
US20180149053A1 (en) 2018-05-31
BR102017024828A2 (pt) 2018-08-14
CN108119216A (zh) 2018-06-05
DE102016123139A1 (de) 2018-05-30

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