EP2514941A1 - Amortisseur de bruit - Google Patents

Amortisseur de bruit Download PDF

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Publication number
EP2514941A1
EP2514941A1 EP12164945A EP12164945A EP2514941A1 EP 2514941 A1 EP2514941 A1 EP 2514941A1 EP 12164945 A EP12164945 A EP 12164945A EP 12164945 A EP12164945 A EP 12164945A EP 2514941 A1 EP2514941 A1 EP 2514941A1
Authority
EP
European Patent Office
Prior art keywords
support structure
housing
silencer according
lightweight
silencer
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
EP12164945A
Other languages
German (de)
English (en)
Other versions
EP2514941B1 (fr
Inventor
Georg Wirth
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
J Eberspaecher 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.)
Filing date
Publication date
Application filed by J Eberspaecher GmbH and Co KG filed Critical J Eberspaecher GmbH and Co KG
Publication of EP2514941A1 publication Critical patent/EP2514941A1/fr
Application granted granted Critical
Publication of EP2514941B1 publication Critical patent/EP2514941B1/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
    • 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
    • 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
    • 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
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/10—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling in combination with sound-absorbing materials

Definitions

  • the present invention relates to a silencer for an exhaust system of an internal combustion engine, in particular of a motor vehicle.
  • a muffler typically includes a housing enclosing a muffler volume and at least one inlet tube and at least one outlet tube. About the inlet pipe and the outlet pipe of the muffler is fluidly connected to the rest of the exhaust system.
  • the muffler may also comprise at least one holder, with which the muffler to a support structure, for.
  • a support structure for example, the internal combustion engine or preferably of the vehicle, can be attached.
  • the support structure for fixing the housing is then formed by an underfloor region of the vehicle or a vehicle body. Since only comparatively little installation space is available in the underbody area, the mufflers can be designed to be comparatively flat, with their housing having at least one flat wall area, which in the mounted state, for example, faces the underbody of the vehicle or a roadway.
  • the present invention is concerned with the problem of providing a muffler of the type mentioned an improved embodiment, which is particularly suitable for the realization of a lightweight construction.
  • the invention is based on the general idea, with a silencer whose housing has at least one flat wall region, to realize at least one wall section of such a flat wall region with the aid of a flat lightweight building board.
  • a lightweight board has a hollow chamber structure or a sandwich structure and characterized thereby at low weight by a high bending stiffness.
  • Such a rigid lightweight board has a very low tendency to vibrational excitation, so that the risk of unwanted sound radiation and the mechanical stress of the muffler is reduced by vibrations.
  • the sandwich structure of the lightweight building panel may have an inner skin, an outer skin and a support structure arranged between the inner skin and the outer skin, which inner skin and outer skin are supported against one another or fastened to one another.
  • the inner skin and outer skin extend substantially parallel to one another.
  • the support structure may have a plurality of individual cells, which are separated from each other by common walls, wherein these partitions are perpendicular to the inner skin and perpendicular to the outer skin.
  • the support structure may also be referred to as a honeycomb structure or "honeycomb".
  • sandwich structures are characterized by an extremely high stability at low weight.
  • the respective lightweight board may be inserted into an opening which contains the flat wall area and which is bordered by an opening edge of the flat wall area.
  • the flat wall portion is provided with at least one opening to insert the separately manufactured lightweight panel therein.
  • the respective lightweight panel closes the respective opening gas-tight.
  • the sandwich structure of the lightweight panel can be compressed in an outer, peripheral edge region to form a flange that can be easily connected to the peripheral opening edge, for example.
  • the respective holder may be attached to the flat wall portion outside the respective lightweight panel.
  • the lightweight panel thus assumes no supporting function, but only serves to gas-tight limitation of the muffler volume.
  • an inner bottom may be arranged in the housing, for example.
  • At least one tube for example, the inlet pipe and / or the outlet pipe and / or another pipe to support the housing.
  • this inner floor can be attached to the flat wall area outside the respective lightweight panel in order to relieve the lightweight panel of a holding function in this regard.
  • the respective planar wall region can be completely formed by a lightweight board.
  • the respective flat wall portion is completely replaced by a flat lightweight panel, which may be useful provided that the lightweight panel does not perform any supporting function, but is used only for gas-tight limitation of the muffler volume.
  • the housing may have at least one non-planar wall region, which in the following may also be referred to as a curved wall region.
  • At least one wall section of such a non-planar wall region can be formed according to an advantageous embodiment by a gas-tight film.
  • a gas-tight film is characterized by a significantly reduced wall thickness compared to a conventional wall.
  • a film has a wall thickness of not more than 0.5 mm, preferably not more than 0.3 mm and in particular not more than 0.1 mm.
  • Such a film can not have a supporting function, but only serves to gas-tight limitation of the muffler volume.
  • the film can be designed as a single-layer or single-layer, whereby the respective wall section can be realized particularly inexpensively.
  • the curved films are expediently curved in such a way that they are sufficiently dimensionally stable in relation to the internal pressure prevailing in the silencer volume.
  • the curved wall areas are outwardly curved, so away from the muffler volume.
  • At least one wall portion of such a non-planar wall portion may be formed by a spatially curved lightweight sandwich panel.
  • a spatially curved lightweight sandwich panel Depending on the three-dimensional shape of the curved wall region, it is therefore also possible to use a correspondingly curved lightweight building panel.
  • a support structure may be provided, to which the inlet tube, the outlet tube, the holder and the lightweight panel are attached.
  • the support structure thus assumes all support functions within the muffler and thus allows the desired relief of the respective lightweight panel.
  • the housing consists exclusively of flat and curved lightweight panels or flat lightweight panels and foils.
  • the support structure is designed self-supporting, while the housing is designed with its flat and non-planar wall portions not self-supporting, but mainly realized the gas-tightness of the muffler volume.
  • At least one tube can be arranged in the housing, which is also fastened to the support structure. At the same time can be used by the integration of the tube in the support structure for stiffening the support structure.
  • the support structure is designed as a truss structure.
  • the support structure then has a plurality of nodes for securing the inlet tube, the outlet tube, the holder and the lightweight panel. Further, the support structure then comprises a plurality of beams for connecting the nodes.
  • a truss-like support structure can be particularly stable and easy to configure at the same time.
  • the housing may be designed in shell construction, so that the housing has at least two shell elements, wherein at least one of the shell elements both has at least one flat wall region and at least one non-planar wall region. Due to the shell structure of the housing, it is in particular possible to accommodate the support structure in the interior of the housing by closing the shells around the support structure.
  • the housing may also have angular edges and corners, which may be formed in particular by suitable edge body or corner body to connect adjacent lightweight panels and / or foils and / or conventional wall sections together.
  • a muffler 1 comprises a housing 2, at least one inlet pipe 3, at least one outlet pipe 4 and at least one holder 5.
  • the muffler 1 is suitable for mounting in an exhaust system of an internal combustion engine, preferably a motor vehicle.
  • the muffler 1 is suitable for an arrangement in the region of a subfloor of the vehicle.
  • the housing 2 has at least one flat wall region 6 which, in the installed state of the muffler 1, may, for example, face the mentioned underbody of the vehicle or a roadway.
  • a flat wall portion 6 facing a rectilinearly extending tunnel wall, which is located in the underbody area of the vehicle for accommodating the exhaust system.
  • the housing 2 encloses a silencer volume 7, which on the one hand serves to form flow paths for the exhaust gas and on the other hand serves to provide a resonance volume and / or an absorption volume and / or a reflection volume and / or an expansion volume.
  • at least one inner bottom 8 may be arranged, by means of which at least one tube is supported on the housing 2.
  • three such inner bottoms 8 are provided, of which the inner bottom 8 arranged on the left supports the inlet pipe 3 on the housing 2, while the inner bottom 8 shown on the right supports the outlet pipe 4 on the housing 2.
  • the muffler 1 can be attached to a support structure, not shown here.
  • This support structure may be suitably formed by an underbody area of the vehicle.
  • the respective holder 5 may be equipped with an elastomeric bearing 10 in order to enable a vibration decoupling between the housing 2 and the respective support structure.
  • At least one wall section 11 is formed by a flat lightweight building board 12, which has a sandwich structure, at least in one of the flat wall regions 6.
  • a flat lightweight building board 12 which has a sandwich structure, at least in one of the flat wall regions 6.
  • opposite planar wall portions 6 each have two wall sections 11, which are each formed by such a lightweight board 12.
  • the in accordance with Fig. 2 opposite planar wall portions 6 each have only one formed by such a lightweight panel 12 wall portion 11.
  • the housing 2 in the Fig. 1 and 2 shown embodiment a total of six lightweight panels 12 are provided.
  • the respective lightweight board 12 has a sandwich structure, so that the respective lightweight board 12 is assembled from several parts and is hollow.
  • the respective lightweight board 12 expediently has an inner skin 13, an outer skin 14 and a support structure 15.
  • the respective support structure 15 is arranged between inner skin 13 and outer skin 14 and supports inner skin 13 and outer skin 14 from each other. Furthermore, the support structure 15 expediently also causes an attachment of the inner skin 13 to the outer skin 14.
  • inner skin 13 and outer skin 14 extend substantially parallel to one another, while the support structure 15 extends, e.g. extends largely transversely to the planes of inner skin 13 and outer skin 14.
  • the support structure 15 forms a plurality of honeycombs or cells whose cell walls are perpendicular to the planes of the inner skin 13 and the outer skin 14 and each separate two adjacent cells from each other.
  • the support structure 15 can thus also be referred to as a cell structure or honeycomb structure.
  • the sandwich structure of the lightweight board 12 may have a shear-resistant support structure 15 between two cover layers, ie inner skin 13 and outer skin 14, which may be welded, glued or soldered.
  • the support structure 15 for this purpose have two support plates, each having on a front side a plurality of, for example, by deep drawing, one-sided protruding elevations, which are arranged for example in mutually perpendicular rows and columns. The two support plates are so that the elevations of one support plate rest on the other support plate in spaces between adjacent elevations in the normal direction of the support plates and vice versa.
  • elevations and spaces are suitably dimensioned or coordinated so that the elevations of a support plate lie transversely to the normal direction of the support plates to adjacent elevations of the other support plate.
  • an extremely shear-resistant support structure 15 can be created.
  • inner skin 13 and outer skin 14 can rest on the rear sides of the support plates and thereby close the recesses complementary to the elevations.
  • the lightweight board 12 may be perforated inside.
  • the respective inner skin 13 of the sandwich structure may be perforated.
  • a pressure compensation for the interior of the substantially hollow sandwich structure can be made possible.
  • the respective lightweight panel 12 is inserted into an opening 16 which is formed in the associated planar wall portion 6 thereto. Said opening 16 is enclosed by an opening edge 17 of the flat wall portion 6, via which the lightweight board 12 is fixed to the flat wall portion 6.
  • the lightweight board 12 may be flattened according to a circumferential outer edge 18.
  • the sandwich structure can be compressed until inner skin 13 and outer skin 14 touch.
  • the outer edge 18 of the respective lightweight board 12th can be connected in a suitable manner gas-tight with the opening edge 17 of the flat wall portion 6, z. Eg by gluing, soldering or welding.
  • the inner floors 8 are in the in the Fig. 1 and 2 embodiment shown expediently attached to the flat wall portion 6, and that outside the respective lightweight panel 12, so that the respective lightweight panel 12 does not support function.
  • the respective planar wall portion 6 is substantially completely formed by a lightweight board 12. Accordingly, the two, according to the average Fig. 3 opposite planar wall portions 6 each completely formed by such a lightweight board 12. Likewise, the two are in accordance with the average Fig. 4 opposite planar wall portions 6 are each completely formed by such a conductive plate 12.
  • the lightweight panels 12 again have the sandwich structure with inner skin 13, outer skin 14 and support structure 15th
  • the housing 2 may have at least one non-planar or curved wall region 19.
  • the curved wall portions 19 may be formed in a conventional manner as a solid wall in conventional wall thickness of at least 0.5 mm, preferably at least 0.7 mm and in particular at least 1.0 mm.
  • the show Fig. 3 and 4 an embodiment in which the curved wall portions 19 are largely decoupled from their support function and are each formed by a gas-tight film 20.
  • Such a film 20 is characterized by a reduced compared to a conventional wall Wall thickness.
  • the film 20 has a wall thickness of not more than 0.5 mm, preferably not more than 0.3 mm and in particular not more than 0.1 mm.
  • curved lightweight panels can be used, which then also have a sandwich structure with inner skin 13, outer skin 14 and support structure 15.
  • can shell body can then realize in which curved lightweight panels integrally merge into flat lightweight panels 12.
  • the muffler 1 may be equipped with a support structure 21.
  • This supporting structure 21 assumes the supporting functions within the muffler 1.
  • the inlet pipe 3, the outlet pipe 4 and the respective holder 5 are fastened to this supporting structure 21.
  • the lightweight panels 12 may be attached to the support structure 21.
  • the films 20 are attached to the support structure 21.
  • the foils 20 thereby extend from the support structure 21 to one of the lightweight panels 12.
  • the support structure 21 is configured to be self-supporting, while the housing 2, which is formed by the lightweight panels 12 and by the foils 20, is not self-supporting. In this way, the housing 2 assumes the sealing function for gas-tight enclosure of the muffler volume 7, while the support structure 21 assumes the support function.
  • the inner floors 8 are omitted.
  • Inlet pipe 3 and outlet pipe 4 are fixed directly to the support structure 21.
  • the additional tube 9 is fixed to the support structure 21.
  • the support structure 21 is designed as a truss structure.
  • it comprises a plurality of nodes 22 and a plurality of carriers 23 for connecting the nodes 22.
  • a node 22 can be seen in conjunction with another tube piece 25, by means of which the outlet tube 4 is effectively supported.
  • a further node 22 is provided in conjunction with a ring 26 in order to reliably support the further tube 9. Furthermore, the lightweight panels 12 are supported by further nodes 22 on the support structure 21. The holders 5 are fixed on the support structure 21 via such nodes 22.
  • the support structure 21 is designed as an internal support structure 21, which is substantially enclosed by the gas-tight envelope, which is formed by the non-supporting housing 2.
  • the support structure is designed on the outside, so that a gas-tight envelope, which is formed by the non-supporting housing 2, is housed substantially within the support structure 21.
  • the housing 2 is configured in shell construction, so that it has at least two housing shells.
  • Each housing shell then has at least one lightweight board 12 and optionally a curved wall portion 19, which may be formed by a foil 20 or by a curved lightweight panel. Due to the shell construction, it is possible to move the support structure 21 largely into the interior of the housing 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
EP12164945.3A 2011-04-21 2012-04-20 Amortisseur de bruit Active EP2514941B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011007856A DE102011007856A1 (de) 2011-04-21 2011-04-21 Schalldämpfer

Publications (2)

Publication Number Publication Date
EP2514941A1 true EP2514941A1 (fr) 2012-10-24
EP2514941B1 EP2514941B1 (fr) 2014-12-24

Family

ID=46000962

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12164945.3A Active EP2514941B1 (fr) 2011-04-21 2012-04-20 Amortisseur de bruit

Country Status (4)

Country Link
US (1) US8770342B2 (fr)
EP (1) EP2514941B1 (fr)
CN (1) CN102748111B (fr)
DE (1) DE102011007856A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2674585A1 (fr) * 2012-06-13 2013-12-18 Eberspächer Exhaust Technology GmbH & Co. KG Silencieux à structure légère
DE102014225749A1 (de) 2014-12-12 2016-06-16 Eberspächer Exhaust Technology GmbH & Co. KG Abgasrohr

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6378583B2 (ja) * 2014-08-28 2018-08-22 川崎重工業株式会社 鞍乗型車両の排気チャンバ
US9534522B2 (en) * 2015-03-23 2017-01-03 Bosal Emission Control Systems Nv Muffler for an exhaust system of an internal combustion engine
DE102015108495A1 (de) * 2015-05-29 2016-12-01 Eberspächer Exhaust Technology GmbH & Co. KG Abgasschalldämpfer zum Quereinbau in ein Fahrzeug
DE102019132097A1 (de) * 2019-11-27 2021-05-27 Eberspächer Exhaust Technology GmbH Abgasschalldämpfer

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4941545A (en) * 1989-04-28 1990-07-17 Arvin Industries, Inc. Muffler assembly
DE19900148A1 (de) * 1998-01-08 1999-07-15 Honda Motor Co Ltd Metallträger für einen Abgasreinigungs-Katalysator
GB2352480A (en) * 1999-07-23 2001-01-31 Perusahaan Otomobil Nasional B I.c. engine exhaust noise suppressor
EP2273084A1 (fr) * 2008-03-26 2011-01-12 Honda Motor Co., Ltd. Appareil catalyseur, procede de production d'un appareil catalyseur et structure de retenue de support de catalyseur

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US2071351A (en) * 1928-01-18 1937-02-23 Ambrose J Mcnamara Muffler for internal combustion engines
US2395005A (en) * 1944-04-08 1946-02-19 Robert B Kuhn Muffler
US3556735A (en) * 1967-06-23 1971-01-19 Jacobo Epelman Muffler adapted to purify the exhaust gases of internal combustion engines
JPS61207813A (ja) * 1985-03-11 1986-09-16 Suzuki Motor Co Ltd エンジン用マフラ
US5310158A (en) * 1990-07-22 1994-05-10 Bks Company Hanger clamp assembly
JP2719890B2 (ja) 1994-09-16 1998-02-25 株式会社ユタカ技研 消音器
JPH11200846A (ja) * 1998-01-17 1999-07-27 Honda Motor Co Ltd 自動二輪車等のマフラー
DE19804718C2 (de) 1998-02-06 2001-09-13 Eurocopter Deutschland Schall absorbierende Sandwichwand
US7510050B2 (en) * 2004-01-27 2009-03-31 Emler Don R Vehicle exhaust systems
DE102005027314A1 (de) * 2005-06-13 2006-12-14 Müller, Ulrich, Dr.-Ing. Verfahren zur Herstellung eines Leichtbaubleches
JP2007092628A (ja) * 2005-09-28 2007-04-12 Calsonic Kansei Corp 車両用消音器
DE102007017661A1 (de) 2007-04-12 2008-10-16 J. Eberspächer GmbH & Co. KG Tiefziehblechbauteil in Schalenbauweise
FR2917122B1 (fr) * 2007-06-08 2009-09-04 Faurecia Sys Echappement Silencieux pour ligne d'echappement de vehicule automobile
US7810609B2 (en) * 2007-09-26 2010-10-12 Chrysler Group Llc Muffler
US20090145687A1 (en) * 2007-12-07 2009-06-11 Treat Troy R Motorcycle exhaust muffler
DE102009049969A1 (de) * 2009-10-20 2011-06-09 Emcon Technologies Germany (Augsburg) Gmbh Abgasschalldämpfer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4941545A (en) * 1989-04-28 1990-07-17 Arvin Industries, Inc. Muffler assembly
DE19900148A1 (de) * 1998-01-08 1999-07-15 Honda Motor Co Ltd Metallträger für einen Abgasreinigungs-Katalysator
GB2352480A (en) * 1999-07-23 2001-01-31 Perusahaan Otomobil Nasional B I.c. engine exhaust noise suppressor
EP2273084A1 (fr) * 2008-03-26 2011-01-12 Honda Motor Co., Ltd. Appareil catalyseur, procede de production d'un appareil catalyseur et structure de retenue de support de catalyseur

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2674585A1 (fr) * 2012-06-13 2013-12-18 Eberspächer Exhaust Technology GmbH & Co. KG Silencieux à structure légère
US9163547B2 (en) 2012-06-13 2015-10-20 Eberspächer Exhaust Technology GmbH & Co. KG Lightweight construction silencer
DE102014225749A1 (de) 2014-12-12 2016-06-16 Eberspächer Exhaust Technology GmbH & Co. KG Abgasrohr
CN105697116A (zh) * 2014-12-12 2016-06-22 埃贝赫排气技术有限两合公司 排气管
US9644510B2 (en) 2014-12-12 2017-05-09 Eberspächer Exhaust Technology GmbH & Co. KG Exhaust pipe
DE102014225749B4 (de) 2014-12-12 2018-03-22 Eberspächer Exhaust Technology GmbH & Co. KG Abgas führendes Rohr und Abgasanlage
CN105697116B (zh) * 2014-12-12 2019-11-12 埃贝赫排气技术有限两合公司 排气管

Also Published As

Publication number Publication date
EP2514941B1 (fr) 2014-12-24
DE102011007856A1 (de) 2012-10-25
CN102748111B (zh) 2014-11-05
CN102748111A (zh) 2012-10-24
US8770342B2 (en) 2014-07-08
US20120267189A1 (en) 2012-10-25

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