EP4105456B1 - Silencieux pour un système d'échappement d'un moteur à combustion interne - Google Patents

Silencieux pour un système d'échappement d'un moteur à combustion interne Download PDF

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Publication number
EP4105456B1
EP4105456B1 EP22172212.7A EP22172212A EP4105456B1 EP 4105456 B1 EP4105456 B1 EP 4105456B1 EP 22172212 A EP22172212 A EP 22172212A EP 4105456 B1 EP4105456 B1 EP 4105456B1
Authority
EP
European Patent Office
Prior art keywords
housing
silencer
opening
region
outlet pipe
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
EP22172212.7A
Other languages
German (de)
English (en)
Other versions
EP4105456A1 (fr
Inventor
Thomas Müller
Philipp Kratz
Benjamin Röhr
Thomas Uhlemann
Nicolas Mettenleiter
Frank Berkemer
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
Purem GmbH
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.)
Filing date
Publication date
Application filed by Purem GmbH filed Critical Purem GmbH
Publication of EP4105456A1 publication Critical patent/EP4105456A1/fr
Application granted granted Critical
Publication of EP4105456B1 publication Critical patent/EP4105456B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
    • F01N1/023—Helmholtz resonators
    • 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
    • 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
    • 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
    • F01N1/089—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using two or more expansion chambers in series
    • 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
    • F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
    • F01N1/026—Annular resonance chambers arranged concentrically to an exhaust passage and communicating with it, e.g. via at least one opening in the exhaust passage
    • 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
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • 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
    • 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
    • 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
    • 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
    • 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
    • F01N13/1877—Construction facilitating manufacture, assembly, or disassembly the assembly using stamp-formed parts or otherwise deformed sheet-metal the channels or tubes thereof being made integrally with the 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
    • 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
    • F01N13/1894—Construction facilitating manufacture, assembly, or disassembly the housing of the assembly consisting of two or more parts, e.g. two half-shells the parts being assembled in longitudinal direction
    • 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 exhaust gas passages, pipes or tubes
    • F01N2470/18—Structure or shape of exhaust gas passages, pipes or tubes the axis of inlet or outlet tubes being other than the longitudinal axis of apparatus
    • 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
    • F01N2490/00—Structure, disposition or shape of gas-chambers
    • F01N2490/10—Two or more expansion chambers in parallel
    • 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
    • F01N2490/00—Structure, disposition or shape of gas-chambers
    • F01N2490/14—Dead or resonance chambers connected to gas flow tube by relatively short side-tubes
    • 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
    • F01N2490/00—Structure, disposition or shape of gas-chambers
    • F01N2490/15—Plurality of resonance or dead chambers

Definitions

  • the present invention relates to a silencer for an exhaust system of an internal combustion engine according to the preamble of claim 1.
  • a silencer according to the preamble of claim 1 is from the US 2013/0153329 A1 known.
  • a silencer housing of this known silencer is constructed with two housing shells. In one of the two housing shells, an outlet opening for receiving an outlet pipe is formed in a central region in the direction of a housing longitudinal axis.
  • the DE 10 2011 102 611 A1 discloses a silencer with a silencer housing constructed with two housing shells. An outlet pipe of the silencer passes through a housing opening formed in half in each of the two housing shells. An inlet pipe of the silencer passes through a housing opening formed in one of the housing shells.
  • the DE 10 2011 077 183 A1 discloses a silencer with a wound silencer housing, in which a circumferential wall is formed by a circumferential wall part wrapped circumferentially around intermediate walls and end walls. In the peripheral wall part, housing openings are formed in different peripheral areas to accommodate an inlet pipe or an outlet pipe.
  • the DE 10 2012 206 871 A1 discloses a silencer with a silencer housing constructed with two housing shells.
  • a housing opening for receiving an outlet pipe is formed in half in each of the two housing shells.
  • a housing opening is formed, through which an exhaust pipe socket fixed on the inside of this housing shell extends.
  • a silencer for an exhaust system of an internal combustion engine comprises a silencer housing surrounding a silencer interior with at least two housing parts that are adjacent to one another and connected to one another in an adjacent area and at least one that penetrates the silencer housing in the area of a housing opening formed in the silencer housing Outlet pipe, wherein at least one housing opening through which an outlet pipe passes is formed completely in one of the housing parts.
  • the connection of such an outlet pipe to the silencer housing can be used as Two-part connection can be realized, in the area of which only this outlet pipe and the housing part of the silencer housing are connected to one another to provide a gas-tight seal, which completely provides the housing opening through which the outlet pipe passes.
  • This process is much easier, can be carried out with greater reliability and less waste than a connection process in which three or four parts of a silencer or an exhaust system have to be connected to one another.
  • the design of a silencer according to the invention enables the positioning of an outlet pipe with a greater degree of freedom, which also enables the structural design inside the silencer, in particular with a view to a lighter and therefore more cost-effective, space-saving structure and to reducing pollutant emissions with a greater degree of freedom.
  • the silencer housing comprises two housing shells, each providing a housing part and connected to one another in the adjacent area by material connection and/or positive connection. At least one housing opening formed completely in one of the housing parts is formed in one of the housing shells.
  • a particularly compact design in a longitudinal direction of a silencer is achieved in that the silencer housing has a circumferential wall which is elongated in the direction of a longitudinal axis of the housing and an end wall at both axial end regions of the circumferential wall and at least one housing opening which is completely formed in one of the housing parts is formed in the circumferential wall. Since the silencer housing is constructed with two housing shells, each of the housing shells can provide a section of the two end walls and a section of the peripheral wall.
  • the silencer housing is flattened orthogonally to the longitudinal axis of the housing and at least one complete housing opening formed in one of the housing parts is formed in an area of the peripheral wall that provides a broad side of the silencer housing.
  • this broad side can be oriented downwards, so that when such a silencer forms a rear silencer, exhaust gas released from an outlet pipe is ejected in a downward direction.
  • At least one housing opening formed completely in one of the housing shells is formed in a substantially non-curved region of the peripheral wall.
  • a compact design is supported by the fact that at least one outlet pipe passing through the silencer housing in the area of a housing opening completely formed in one of the housing shells has a longitudinal center axis This outlet pipe is angled in the area of its length region passing through the housing opening with respect to an opening center axis. Furthermore, it can be provided that at least one
  • Silencer housing in the area of a housing opening completely formed in one of the housing parts does not protrude beyond the silencer housing in the direction of the longitudinal axis of the housing.
  • an edge region surrounding this housing opening is reshaped in the direction away from the silencer interior.
  • the outlet pipe then does not rest on an edge of the silencer housing formed, for example, by stamping, but rather on a surface area formed by forming.
  • an outlet pipe passing through at least one housing opening completely formed in one of the housing parts can extend from the interior of the silencer beyond the edge region surrounding this housing opening.
  • an outlet pipe passing through at least one housing opening completely formed in one of the housing parts ends essentially flush with the edge region surrounding this housing opening.
  • At least one connection is formed completely in one of the housing shells
  • the outlet pipe passing through the housing opening is connected by welding to the silencer housing in the area of the edge area surrounding this housing opening.
  • an outlet pipe passing through at least one housing opening completely formed in one of the housing shells can be formed in one piece with its length region extending in the area of the housing opening and outside the silencer interior and can provide an exhaust gas outlet opening for releasing exhaust gas to the environment.
  • An end pipe that is usually present and provides an additional component, which is to be connected to the exhaust pipe leading out of the silencer interior and passing through the silencer housing, is therefore not required in the structure according to the invention.
  • This also has a particularly advantageous effect on the weight and volume of a silencer or an exhaust system constructed with it and makes it possible to use the available installation space efficiently, especially for the silencer with regard to the sound attenuation characteristics and pollutant emissions.
  • the invention further relates to an exhaust system for an internal combustion engine, comprising a silencer constructed according to the invention.
  • the silencer is a rear silencer, and an exhaust gas outlet opening on an outlet pipe passing through at least one housing opening completely formed in one of the housing parts is provided for releasing exhaust gas to the environment.
  • the in Fig. 1 Silencer 10 shown can provide a rear silencer of an exhaust system, generally designated 12, of an internal combustion engine on a vehicle.
  • the silencer 10 comprises a silencer housing, generally designated 14, which in the illustrated embodiment is constructed with two housing shells 20, 22 each providing a housing part 16 or 18.
  • the silencer 10 is constructed in such a way that, even when installed in a vehicle, the housing shell 20 is an upper housing shell, i.e. oriented upwards in the height direction, and the housing shell 22 is a lower housing shell, i.e. oriented downwards in the height direction or facing the ground Housing shell is.
  • Each of the two housing shells 20, 22 is preferably provided as a formed sheet metal part and has a connecting edge 26, 28 that is bent outwards with respect to a silencer interior 24.
  • the two connecting edges 26, 28 provide an adjoining area 29 of the housing shells 20, 22, in which they rest against one another and are connected to one another, for example by welding.
  • the two housing shells 20, 22 could be connected to one another in these edge regions 26, 28 by a positive connection formed by flanging.
  • the two housing shells 20, 22 provide a peripheral wall 30 surrounding a housing longitudinal axis L on the silencer housing 14, each of the two housing shells 20, 22 providing approximately half of the peripheral wall 30.
  • the two housing shells 20, 22 together each provide an end wall 32, 34, with each of the two housing shells 20, 22 also providing approximately half of a respective end wall.
  • a housing opening 36 is formed, which is penetrated by an inlet pipe 38.
  • the housing opening 36 is positioned in such a way that it lies essentially half in the two housing shells 20, 22 and thus interrupts the connecting edges 26, 28 forming the adjacent area 29.
  • an edge region 39, 40 is formed on each of the housing shells 20, 22, which is shaped away from the silencer interior 24 and provides an approximately cylindrical structure of the housing opening 36, with which the inlet pipe 38 is firmly and gas-tightly connected, for example by welding. How this can happen Fig.
  • inlet pipe 38 protrudes slightly outwards beyond the silencer housing 14 in the area of the edge regions 39, 40 or can end flush with the two edge regions 39, 40.
  • An exhaust gas from the area of an internal combustion engine leading to the silencer 10 of the exhaust system 12 can be inserted into the inlet pipe 38 and connected firmly and gas-tight to the inlet pipe 38 and possibly also the two housing shells 20, 22 of the silencer housing 14 by welding.
  • the inlet pipe 38 passes through an intermediate wall 42 arranged in the silencer interior 24 and held between the two housing shells 20, 22 and extends into a chamber 44 formed in the silencer interior 24.
  • an outlet pipe 46 adjoins the inlet pipe 38 and is fixed to the inlet pipe 38, for example by welding and/or by a press connection connected gas-tight.
  • the outlet pipe 46 passes through a housing opening 48, described in more detail below, in the lower housing shell 22 and, with its length region 50 passing through the housing opening 48, extends slightly beyond the housing opening 48 out of the silencer housing 14.
  • the inlet pipe 38 is open via a plurality of openings 54 to the silencer interior 24, in particular to the chamber 52. Furthermore, in the length region of the inlet tube 38 extending in the chamber 52, a resonator tube 56 branches off from it, which passes through an associated opening in the intermediate wall 42 and thus provides a Helmholtz resonator together with the chamber 44.
  • the course of the inlet pipe 38 and the outlet pipe 36 in the silencer interior 24 is only shown as an example. More than the two chambers 44, 52 shown could be provided in the silencer interior 24, which could communicate with one another via one or more pipes extending exclusively in the silencer interior 24.
  • at least one inlet pipe 38 is provided, via which exhaust gas is introduced into the silencer interior 24, and at least one outlet pipe 46 is provided, via which exhaust gas leaves the silencer housing 14.
  • the inlet pipe 38 and the outlet pipe 46 do not necessarily have to connect directly to one another, but could, for example, also be open to one or different chambers and in this way be connected to one another in a connection that guides the exhaust gas through the silencer housing 14.
  • the housing opening 48 provided in association with the outlet pipe 46 is formed in the area of the peripheral wall 30 of the silencer housing 14.
  • the silencer housing 14 is flattened transversely to its longitudinal axis L and thus essentially represents two Fig. 2 Broadsides 58, 60 shown above and below as well as two in Fig. 2 Narrow sides 62, 64 shown on the right and left are ready.
  • the housing opening 48 through which the outlet pipe 46 extends, is provided in the broad side 60 of the lower housing shell 20.
  • the lower housing shell 22 is essentially non-curved, i.e. has an area 66 lying essentially in a plane E, in which the housing opening 48 penetrated by the outlet pipe 46 is formed.
  • the non-curved region 66 of the lower housing shell 22, which lies essentially in the plane E the lower housing shell 22 is deformed in a region surrounding the housing opening 48 in the direction of the silencer interior 24 in order to provide an edge region 68 which preferably essentially completely surrounds the housing opening 48 .
  • the outlet pipe 46 rests on the inside of this edge region 68, so that sharp-edged contact is avoided.
  • the outlet pipe 46 can be firmly and gas-tightly connected to the lower housing shell 22 by means of a weld seam guided, for example, along an outwardly oriented end face of the edge region 68.
  • the housing opening 48 is formed in the essentially non-curved region 66 of the section of the peripheral wall 30 provided on the lower housing shell 22 and lying in the plane E, this can be compared, for example, with a circular cross-sectional contour of the outlet pipe 46 in its length region 50 passing through the housing opening 48 simple geometric configuration, in particular with an elliptical circumferential contour, since the outlet pipe 46 is oriented in such a way that its length region 50, which extends through the housing opening 48, is oriented at an angle with its longitudinal center axis A present in this length region 50 with respect to an opening center axis M of the housing opening 48.
  • the opening center axis M is essentially orthogonal to the plane E in which the region 66 of the lower housing shell 22 having the housing opening 48 lies.
  • the outlet pipe 46 which can be constructed in one piece or from several pipe segments, extends through the housing opening 48 and over the edge region 68 out.
  • This length region 50 of the outlet pipe 46 is formed in one piece and provides an exhaust gas outlet opening 70 of the outlet pipe 46 or the silencer 10.
  • the outlet pipe 46, with its length region 50 extending through the housing opening 48 and outside the same, is designed in such a way that it essentially does not protrude beyond the overall outer circumferential contour of the silencer housing 14, particularly downwards. Even in the direction of the longitudinal axis L of the housing, the outlet pipe 48 does not protrude beyond the outer circumferential contour of the silencer housing 14, which in Fig.
  • outlet pipe 46 Since the outlet pipe 46, with its length region 50 which passes through the housing opening 48 and also provides the exhaust gas outlet opening 70, only protrudes outwards for a comparatively short time beyond the silencer housing 14, there is no risk of a tailpipe trembling occurring due to vibrations present in a vehicle.
  • the silencer shown in the figures could be designed differently in various areas.
  • two or more outlet pipes could be guided out of the silencer housing 14 in the manner shown in the figures in connection with the outlet pipe 46.
  • the housing opening 36 provided in association with the inlet pipe 38 could also be be provided completely in one of the two housing shells 20, 22, preferably in the area of the peripheral wall 30.

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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 (8)

  1. Silencieux pour un système d'échappement d'un moteur à combustion interne, comprenant un boîtier de silencieux (14) entourant un espace intérieur de silencieux (24) avec au moins deux parties de boîtier (16, 18) adjacentes dans une zone adjacente (29) et connectées l'une à l'autre, et au moins un tube de sortie (46) traversant le boîtier de silencieux (14) dans la zone d'une ouverture de boîtier (48) formée dans le boîtier de silencieux (14), dans lequel au moins une ouverture de boîtier (48) traversée par un tube de sortie (46) est réalisée entièrement dans l'une des parties de boîtier (16, 18), dans lequel le boîtier de silencieux (14) comporte deux coques de boîtier (20, 22) fournissant chacune une partie de boîtier (16, 18), reliées entre elles par une liaison par le matériau ou par la forme, dans lequel au moins une ouverture de boîtier (48) réalisée entièrement dans l'une des parties de boîtier (16, 18) est réalisée dans l'une des coques de boîtier (20, 22), dans lequel le boîtier de silencieux (14) présente une paroi circonférentielle (30) allongée dans la direction d'un axe longitudinal de boîtier (L) et une paroi frontale (32, 34) aux deux zones d'extrémité axiales de la paroi circonférentielle (30), et dans lequel au moins une ouverture de boîtier (48) entièrement réalisée dans l'une des coques de boîtier (20, 22) est réalisée dans la paroi circonférentielle (30), caractérisé en ce que
    - au moins une ouverture de boîtier (48) formée entièrement dans l'une des coques de boîtier (20, 22) est formée dans une zone (66) essentiellement non courbée, située dans un plan (E), de la paroi circonférentielle (30),
    - dans au moins un tube de sortie (46) traversant le boîtier de silencieux (14) dans la zone d'une ouverture de boîtier (48) réalisée entièrement dans l'une des coques de boîtier (20, 22), un axe central longitudinal (A) de ce tube de sortie (46) est incliné, dans la zone de sa zone longitudinale (50) traversant l'ouverture de boîtier (48), par rapport à un axe central d'ouverture (M) sensiblement orthogonal au plan (E),
    - dans la zone d'au moins une ouverture de boîtier (48) réalisée entièrement dans l'une des coques de boîtier (20, 22), la coque de boîtier (20, 22) est déformée s'éloignant de l'espace intérieur de silencieux (24) pour fournir une zone de bord (68) entourant cette ouverture de boîtier (48),
    - en ce qu'un tube de sortie (46) traversant au moins une ouverture de boîtier (48) formée entièrement dans l'une des coques de boîtier (20, 22) est relié par soudage au boîtier de silencieux (14) dans la zone de la zone de bord (68) entourant cette ouverture de boîtier (48).
  2. Silencieux selon la revendication 1, caractérisé en ce que le boîtier de silencieux (14) est aplati orthogonalement à l'axe longitudinal de boîtier (L), et en ce qu'au moins une ouverture de boîtier (48) complète formée dans l'une des coques de boîtier (20, 22) est formée dans une zone de la paroi circonférentielle (30) fournissant un côté large (60) du boîtier de silencieux (14).
  3. Silencieux selon l'une des revendications précédentes, caractérisé en ce qu'au moins un tube de sortie (46) traversant le boîtier de silencieux (14) dans la zone d'une ouverture de boîtier (48) formée entièrement dans l'une des coques de boîtier (20, 22) ne fait pas saillie au-delà du boîtier de silencieux (14) dans la direction d'un axe longitudinal de boîtier (L).
  4. Silencieux selon l'une des revendications précédentes, caractérisé en ce qu'un tube de sortie (46) qui traverse au moins une ouverture de boîtier (48) formée entièrement dans l'une des coques de boîtier (20, 22) s'étend hors de l'espace intérieur de silencieux (24) au-delà de la zone de bord (68) entourant cette ouverture de boîtier (48).
  5. Silencieux selon l'une des revendications précédentes, caractérisé en ce qu'un tube de sortie (46) qui traverse au moins une ouverture de boîtier (48) formée entièrement dans l'une des coques de boîtier (20, 22) se termine sensiblement à fleur de la zone de bord (68) entourant cette ouverture de boîtier (48).
  6. Silencieux selon l'une des revendications précédentes, caractérisé en ce qu'un tube de sortie (46) qui traverse au moins une ouverture de boîtier (48) réalisée entièrement dans l'une des coques de boîtier (16, 18) est réalisé d'une seule pièce avec sa zone de longueur (50) s'étendant dans la zone de l'ouverture de boîtier (48) et à l'extérieur de l'espace intérieur de silencieux (24) et met à disposition une ouverture de sortie de gaz d'échappement (70) pour l'émission de gaz d'échappement vers l'environnement.
  7. Système d'échappement pour un moteur à combustion interne, comprenant un silencieux (10) selon l'une des revendications précédentes.
  8. Système d'échappement selon la revendication 7, caractérisé en ce que le silencieux (10) est un silencieux d'extrémité, et en ce qu'une ouverture de sortie de gaz d'échappement (70) est prévue sur un tube de sortie (46) traversant au moins une ouverture de boîtier (48) formée entièrement dans l'une des coques de boîtier (16, 18), pour l'émission de gaz d'échappement vers l'environnement.
EP22172212.7A 2021-06-15 2022-05-09 Silencieux pour un système d'échappement d'un moteur à combustion interne Active EP4105456B1 (fr)

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US (1) US11840948B2 (fr)
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Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4132286A (en) * 1976-08-31 1979-01-02 Nihon Radiator Co., Ltd. Muffler
DE19611133A1 (de) * 1996-03-21 1997-09-25 Eberspaecher J Schalldämpfer-Anordnung
DE102011077183B4 (de) * 2011-06-08 2015-05-21 Eberspächer Exhaust Technology GmbH & Co. KG Schalldämpfer und Herstellungsverfahren
CN103174493A (zh) * 2011-12-20 2013-06-26 凯特利迪克·科姆巴森公司 静音消音器
DE102012206871A1 (de) * 2012-04-25 2013-10-31 Friedrich Boysen Gmbh & Co. Kg Schalldämpfer für eine Brennkraftmaschine und Verfahren zur Herstellung eines Schalldämpfers
JP5934150B2 (ja) * 2013-07-03 2016-06-15 本田技研工業株式会社 消音器
DE102015102611A1 (de) * 2015-02-24 2016-08-25 Eberspächer Exhaust Technology GmbH & Co. KG Abgasführungssystem für eine Brennkraftmaschine
DE102017124750A1 (de) * 2017-10-23 2019-04-25 Eberspächer Exhaust Technology GmbH & Co. KG Schalldämpfereinsatz, Schalldämpfer mit diesem und Verfahren zur Herstellung eines Schalldämpfereinsatzes
JP6667561B2 (ja) 2018-01-26 2020-03-18 フタバ産業株式会社 排気ユニット
DE102018106429A1 (de) * 2018-03-20 2019-09-26 Eberspächer Exhaust Technology GmbH & Co. KG Verfahren zur Herstellung eines Schalldämpfers

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CN115478928B (zh) 2025-02-25
ZA202206574B (en) 2024-04-24
DE102021115392A1 (de) 2022-12-15
US11840948B2 (en) 2023-12-12
US20220397050A1 (en) 2022-12-15
CN115478928A (zh) 2022-12-16
EP4105456A1 (fr) 2022-12-21

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