EP2633162A1 - Système de silencieux d'échappement - Google Patents

Système de silencieux d'échappement

Info

Publication number
EP2633162A1
EP2633162A1 EP11776425.8A EP11776425A EP2633162A1 EP 2633162 A1 EP2633162 A1 EP 2633162A1 EP 11776425 A EP11776425 A EP 11776425A EP 2633162 A1 EP2633162 A1 EP 2633162A1
Authority
EP
European Patent Office
Prior art keywords
exhaust
muffler
housing
wall
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
EP11776425.8A
Other languages
German (de)
English (en)
Other versions
EP2633162B1 (fr
Inventor
Kurt Klammler
Thomas Obenaus
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.)
AVL List GmbH
Original Assignee
AVL List 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 AVL List GmbH filed Critical AVL List GmbH
Publication of EP2633162A1 publication Critical patent/EP2633162A1/fr
Application granted granted Critical
Publication of EP2633162B1 publication Critical patent/EP2633162B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • F01N1/084—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling the gases flowing through the silencer two or more times longitudinally in opposite directions, e.g. using parallel or concentric 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
    • 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
    • F01N13/14—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having thermal insulation
    • F01N13/141—Double-walled exhaust pipes or housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1888—Construction facilitating manufacture, assembly, or disassembly the housing of the assembly consisting of two or more parts, e.g. two half-shells
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2882—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices
    • F01N3/2885—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices with exhaust silencers in a single housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2210/00—Combination of methods of silencing
    • F01N2210/02—Resonance and interference
    • 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
    • F01N2230/00—Combination of silencers and other devices
    • F01N2230/04—Catalytic converters
    • 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
    • F01N2490/155—Plurality of resonance or dead chambers being disposed one after the other in flow direction

Definitions

  • the invention relates to an exhaust silencer arrangement for an internal combustion engine, in particular of a power generator, with a pre-silencer and a rear silencer.
  • DE 19 834 822 AI describes an exhaust muffler on an internal combustion engine in a motor chain saw, which consists of a housing which is composed of two housing shells.
  • the one housing shell has an exhaust gas inlet, the other housing shell an exhaust gas outlet.
  • an inner wall, and arranged between the exhaust inlet and exhaust outlet catalyst element are provided in the interior of the muffler housing.
  • a combined exhaust silencer and catalyst unit is further known from EP 0 356 607 AI.
  • the object of the invention is to achieve the highest possible acoustic and thermal damping in an exhaust system for an internal combustion engine in the smallest possible space and in a simple manufacturing manner.
  • the two chambers may be sandwiched one above the other or side by side. As a result, an extremely compact design can be made possible.
  • a power generator such as a so-called range extender for an electric vehicle
  • the partition has at least one thermal insulation, wherein preferably the partition wall has a sandwich-type structure with at least three layers. - - has, wherein an insulating mat is particularly preferably arranged between two dividing plates.
  • the flow connection between the two chambers may be formed by a sliding seat normal to the partition exhibiting connecting pipe.
  • the housing wall has a thermal insulation, preferably a sandwich-like structure with at least three layers, wherein particularly preferably between a metallic inner wall and a preferably metallic outer wall an existing example of an insulating mat insulating layer is arranged.
  • the outer wall of the housing wall may consist of an at least single-layered, preferably dome-embossed, Edelstallfolie.
  • a particularly preferred embodiment variant of the invention provides that at least one exhaust gas aftertreatment device formed, preferably at least one catalyst unit, is arranged in the housing, wherein the housing preferably has at least one closable expansion opening for installing and removing the exhaust gas aftertreatment device.
  • the integration of the exhaust aftertreatment device in the housing allows a particularly compact design of the exhaust system.
  • the insulation of the housing wall also has an advantageous effect on the response of the exhaust aftertreatment device.
  • the housing is formed integrally with at least one preferably flexible exhaust pipe and / or an exhaust manifold, wherein to minimize the heat radiation may be provided that the exhaust pipe and / or the exhaust manifold, preferably by a sandwich Structure formed insulation having preferably arranged between two metallic layers insulating layer.
  • a high sound attenuation is achieved if the front silencer is designed as a reflection silencer and the rear silencer as a combined absorption / resonator silencer with at least two, preferably at least three, particularly preferably four resonator chambers.
  • the housing has an upper shell and a lower shell, the upper shell and the lower shell preferably being in the region of a parting plane.
  • - - Are welded together rallel to the partition wall. It is particularly advantageous if the inner wall of the upper and / or lower shell housing wall of a half-shell, preferably made of sheet metal.
  • FIG. 1 shows a silencer arrangement according to the invention in a first
  • FIG. 2 shows the muffler assembly in a plan view.
  • Fig. 3 shows a silencer arrangement according to the invention in a second
  • the figures each show an exhaust muffler arrangement 1 with a housing 2, in which a first chamber 3 and a second chamber 4 is arranged.
  • the housing 2 consists of an upper shell 2a and a lower shell 2b, which are welded together in the region of a separation plane ⁇ parallel to the partition wall 9.
  • a pre-silencer VSD and in the second chamber 4 a rear silencer NSD is arranged in the same housing 2.
  • an exhaust gas aftertreatment device 6 formed by a catalyst unit 5, 5a, 5b may be arranged.
  • an exhaust manifold 7, an exhaust gas pipe or flexible exhaust pipes may be formed in one piece with the housing 2.
  • the housing wall 8 of the housing 2 has a sandwich-like structure with a plurality of layers, wherein an insulating mat 8c is arranged between an inner wall 8a formed by a half-shell of sheet metal and an outer wall 8b formed by, for example, a dome-embossed stainless steel foil.
  • the first chamber 3 and second chamber 4 are separated by a partition wall 9.
  • the partition wall 9 also has a sandwich-like structure - -, wherein between two partitions 9a, 9b, an insulating mat 9c is arranged, as shown in detail in Fig. 6.
  • the exhaust aftertreatment device 6 is arranged horizontally, i. the flow axis 6 a of the exhaust aftertreatment device 6 is formed substantially parallel to the partition wall 9.
  • the aftertreatment device 6 is lying, that is, with a substantially horizontal flow axis 6a.
  • the catalyst units 5 a, 5 b of the exhaust gas aftertreatment device 6 are positioned vertically, the flow axis 6 a of the exhaust gas aftertreatment device 6 is arranged substantially normal to the dividing wall 9, the catalyst units 5 a, 5 b via Abdichtringe 13 are mounted in the partition 9.
  • a mounting opening 15 which can be closed by means of a cover 14, via which the catalyst units 5a, 5b can be removed and installed.
  • the pre-muffler VSD shown in FIG. 4 in the chamber 3 is designed as a so-called reflection muffler 10 and has a plurality of reflection chambers 10a, 10b, which are bounded by normal to the partition wall 9 arranged reflective plates I Ia, I Ib, 11c.
  • the reflection muffler 10 has an input pipe 12a, a connection pipe 12b and an exhaust pipe 12c.
  • the rear muffler NSD shown in FIG. 5 is embodied in the exemplary embodiment as a combined absorption / resonator muffler with low-frequency resonator chambers R 1, R 2, R 3, R 4, as well as high-frequency absorption chambers.
  • Pre-muffler VSD and rear muffler NSD are fluidly connected to each other via a connecting pipe 16 penetrating the partition 9.
  • the connecting tube 16 is mounted in a sliding seat 17 normal to the partition wall 9, as shown in Fig. 6 can be seen.
  • the exhaust gas passes from the internal combustion engine according to arrows shown in FIGS. 3 to 5 into the housing 2 and is guided via the catalyst units 5 a, 5 b into the pre-silencer VSD arranged in the first chamber 3.
  • the exhaust gas flows via the connecting pipe 16 into the rear silencer NSD arranged in the second chamber 4.
  • the exhaust gas leaves the housing 2 via the outlet opening 19.
  • the exhaust muffler assembly 1 described allow a particularly compact design and the integration of the exhaust muffler, consisting of pre-muffler VSD and rear silencer NSD in the vehicle periphery.
  • the exhaust muffler assembly 1 allows a particularly simple production: Between the pre-muffler VSD and the rear muffler NSD an insulating mat 9c is inserted with a wall thickness between 10 mm and 30 mm and a heat resistance up to about 1000 ° C, which the heat transfer between the front silencer VSD and rear silencer NSD prevented. Thereafter, the pre-muffler VSD and rear muffler NSD are connected and welded together via the separating plates 9a, 9b. This results in a compact exhaust muffler arrangement 1, which consists primarily of pre-muffler VSD and rear muffler NSD. The next step is the application of an insulating layer 8c to the inner wall 8a of the housing 2.
  • the permanent attachment then takes place by means of a formed by about a single or multi-layer dome embossed stainless steel foil outer wall 8b, which is firmly welded to the unit consisting of pre-silencer VSD and rear silencer NSD.
  • the embossing depth of the dome-embossed stainless steel foil can be between 0.1 mm and 0.9 mm.
  • the design of the interior of the pre-silencer VSD and the rear silencer NSD can be adapted differently.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Silencers (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

L'invention concerne un système de silencieux d'échappement (1) pour un moteur à combustion interne, en particulier d'une unité générant du courant, comprenant un silencieux antérieur (VSD) et un silencieux postérieur (NSD). L'invention vise à obtenir une structure compacte très insonorisante. A cet effet, le silencieux antérieur (VSD) et le silencieux postérieur (NSD) sont disposés dans un logement commun (2), le silencieux antérieur (NSD) étant disposé dans une première chambre (3) et le silencieux postérieur (NSD) étant disposé dans une deuxième chambre (4) du logement (2), et les deux chambres (3, 4) étant reliées l'une à l'autre par au moins une liaison d'écoulement dans une paroi de séparation (9).
EP11776425.8A 2010-10-28 2011-10-27 Système de silencieux d'échappement Not-in-force EP2633162B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA1788/2010A AT510788B1 (de) 2010-10-28 2010-10-28 Abgasschalldämpferanordnung
PCT/EP2011/068829 WO2012055949A1 (fr) 2010-10-28 2011-10-27 Système de silencieux d'échappement

Publications (2)

Publication Number Publication Date
EP2633162A1 true EP2633162A1 (fr) 2013-09-04
EP2633162B1 EP2633162B1 (fr) 2015-01-21

Family

ID=44897755

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11776425.8A Not-in-force EP2633162B1 (fr) 2010-10-28 2011-10-27 Système de silencieux d'échappement

Country Status (5)

Country Link
EP (1) EP2633162B1 (fr)
JP (1) JP2013540948A (fr)
CN (1) CN103261593B (fr)
AT (1) AT510788B1 (fr)
WO (1) WO2012055949A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012209932A1 (de) * 2012-06-13 2013-12-19 Eberspächer Exhaust Technology GmbH & Co. KG Leichtbau-Schalldämpfer

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Publication number Priority date Publication date Assignee Title
FR1288891A (fr) * 1961-02-16 1962-03-30 Tecalemit Dispositif silencieux et déformateur des ondes acoustiques
JPS5982517A (ja) * 1982-11-01 1984-05-12 Yamaha Motor Co Ltd 自動二輪車等の消音器構造
JPS59155528A (ja) 1983-02-25 1984-09-04 Honda Motor Co Ltd 消音器
JPS60175717A (ja) * 1984-02-20 1985-09-09 Honda Motor Co Ltd 内燃機関用消音器
US4894987A (en) 1988-08-19 1990-01-23 Ap Parts Manufacturing Company Stamp formed muffler and catalytic converter assembly
JPH0723685B2 (ja) * 1990-11-09 1995-03-15 日本碍子株式会社 エンジン排気ガス用サイレンサー
JP2578330Y2 (ja) * 1992-02-10 1998-08-13 株式会社共立 内燃機関の排気マフラー構造
DE19608273A1 (de) * 1996-03-05 1997-09-11 Eberspaecher J Gmbh & Co Kombinierter Reflexions-Absorptions-Abgas-Schalldämpfer in Mehrkammerbauweise
DE19611133A1 (de) * 1996-03-21 1997-09-25 Eberspaecher J Schalldämpfer-Anordnung
DE19834822A1 (de) 1998-08-01 2000-02-03 Stihl Maschf Andreas Abgasschalldämpfer mit einem Katalysator
EP0992659B1 (fr) * 1998-10-05 2007-05-02 Scambia Industrial Developments Aktiengesellschaft Elément de conduit d'échappement et procédé de préparation d'un élément de conduit d'échappement
GB2347970A (en) 1999-03-13 2000-09-20 Ford Global Tech Inc Motor vehicle exhaust system insulated downstream of catalytic converter
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DE10060522B4 (de) * 2000-12-06 2004-07-22 J. Eberspächer GmbH & Co. KG Abgas-Schalldämpfer für ein brennstoffbetriebenes Heizgerät
EP1308608B1 (fr) * 2001-11-05 2007-08-15 Hiraoka Manufacturing Co., Ltd. Système d'échappement d'un moteur
JP2003239717A (ja) * 2002-02-18 2003-08-27 Nissan Motor Co Ltd 消音装置
JP4047060B2 (ja) * 2002-04-30 2008-02-13 日野自動車株式会社 マフラ
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Also Published As

Publication number Publication date
JP2013540948A (ja) 2013-11-07
WO2012055949A1 (fr) 2012-05-03
AT510788A1 (de) 2012-06-15
CN103261593B (zh) 2018-02-02
AT510788B1 (de) 2012-10-15
EP2633162B1 (fr) 2015-01-21
CN103261593A (zh) 2013-08-21

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