WO2007098802A1 - Systeme de conduit de gaz d'echappement - Google Patents

Systeme de conduit de gaz d'echappement Download PDF

Info

Publication number
WO2007098802A1
WO2007098802A1 PCT/EP2006/012610 EP2006012610W WO2007098802A1 WO 2007098802 A1 WO2007098802 A1 WO 2007098802A1 EP 2006012610 W EP2006012610 W EP 2006012610W WO 2007098802 A1 WO2007098802 A1 WO 2007098802A1
Authority
WO
WIPO (PCT)
Prior art keywords
exhaust pipe
layers
pipe system
film
wall
Prior art date
Application number
PCT/EP2006/012610
Other languages
German (de)
English (en)
Inventor
Martin Geisler
Winfried Willeke
Original Assignee
Emcon Technologies Germany (Augsburg) 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 Emcon Technologies Germany (Augsburg) Gmbh filed Critical Emcon Technologies Germany (Augsburg) Gmbh
Publication of WO2007098802A1 publication Critical patent/WO2007098802A1/fr

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
    • 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
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
    • F01N13/102—Other arrangements or adaptations of exhaust conduits of exhaust manifolds having thermal insulation
    • 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
    • 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
    • F01N2470/24—Concentric tubes or tubes being concentric to housing, e.g. telescopically assembled
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2530/00—Selection of materials for tubes, chambers or housings
    • F01N2530/26—Multi-layered walls

Definitions

  • the invention relates to an exhaust pipe system, in particular of a vehicle, with a wall.
  • Internal combustion engine exhaust manifolds typically include piping and fittings such as exhaust manifolds, catalytic converters, or particulate filters. These pipelines or built-in parts have walls that are sometimes exposed to enormous thermal loads. In the case of large local temperature differences, this leads to extreme stress on the wall material and overall to a difficult fastening situation due to the considerable thermal expansion of the pipes or built-in components. A stress-free or low-voltage attachment of the exhaust pipe system is therefore always associated with great effort.
  • the object of the invention is to achieve a better behavior of the exhaust pipe system under thermal stress and a better sound attenuation.
  • an inventive exhaust pipe system wherein the wall of the exhaust pipe system is a composite component of a plurality of superposed, interconnected, film-like layers. Between these individual layers, an oxidation layer forms, which acts as thermal insulation. Furthermore, improved sound attenuation values were found compared to a single-layered wall.
  • adjacent film-like layers lie flat against one another. With increasing contact surfaces between the individual Layers increases the mechanical stability of the composite component, so that it can be used in particular as a structural component.
  • adjacent film-like layers are spaced apart in sections, that is, they are not adjacent to each other over the entire surface. Between the junctions of adjacent layers even small spacings are sufficient to achieve an improved sound attenuation of the wall according to the principle of absorption sound attenuation.
  • the layer gaps or micro gaps are usually filled with air and thus also improve the thermal insulation properties of the wall.
  • the film-like layers are preferably metal foils. Due to the thermal loads, metals with their generally relatively high melting points are particularly suitable as wall material for exhaust pipe systems. In addition, the composite component wall of metal foils can be used well as a supporting component, since metals largely retain their strength even when heated.
  • the exhaust pipe system comprises an air gap insulated exhaust pipe with an inner tube and an outer tube, wherein between the tubes, an air gap is provided.
  • the exhaust pipe has a double wall.
  • Both the inner tube and the outer tube is to be referred to in the sense of this document as a wall, so that the inner and / or outer tube at least partially consists of the interconnected, foil-like layers.
  • the intermediate plate prevents hot Leckesteströmonne, for example, to bumps of the inner tube.
  • the outer tube thus remains selectively spared from thermal extremes.
  • the intermediate sheet is also to be understood as a wall, more precisely as a non-load-bearing wall of the exhaust-gas power system. Accordingly, the intermediate plate at least consist in sections of the interconnected, film-like layers.
  • these film-like layers to form the composite component has a thickness of 0.05 mm to 0.1 mm, which is preferably constant.
  • this relatively thin layer formation it is also possible to produce non-load-bearing intermediate sheets without too much material consumption from at least two layers.
  • at least one oxide insulating layer is formed, which leads to better thermal insulation and better sound-damping behavior of the wall.
  • the exhaust pipe system may e.g. an exhaust manifold, since the exhaust gas temperatures in the region of the exhaust manifold, i. directly at the cylinder outlets of the engine block, are very high and consequently an improved thermal insulation is particularly advantageous.
  • FIG. 1 is a schematic longitudinal sectional view through an inventive exhaust pipe system
  • FIG. 2 is a sectional view taken along the line H-II in FIG. 1;
  • FIG. 3 is a sectional view taken along the line III-III in Figure 1;
  • FIGS. 4a to 4c each show a schematic cross section through an exhaust pipe system according to the invention with enlarged cutouts
  • FIG. 5 shows the detail V of Figure 1 in an alternative embodiment.
  • FIG. 1 an air gap insulated exhaust manifold is shown, the three cylinder-side inlet pipes 2, 4, 6 connected to each other.
  • the cylinder outlets are symbolized by the circles 8.
  • Each cylinder 8 is assigned its own inlet pipe 2, 4, 6.
  • the inlet pipes 2, 4, 6 have a section 9 coming from the cylinder 8, with which they are welded to the cylinder block flange 11 (FIG. 3), and a cantilevered section with which they continue into a exhaust pipe-side outlet pipe 10 penetrate (Fig. 2 and 3).
  • the exhaust-side outlet pipe 10 is composed of upper and lower shells 12, 14 and has an exhaust-side flange 16 to which an exhaust pipe is attached. On the input side, the outlet pipe 10 is also welded to the cylinder block flange 11.
  • the outlet tube 10 surrounds the inlet tubes 2, 4, 6 in the region in which they flow into one another in terms of flow.
  • the inlet pipes 2, 4, 6 are inserted into one another.
  • the middle inlet tube 4 has for this purpose lateral, enlarged receiving openings facing in opposite directions, while the left and right inlet tube 2, 6 receive slidably.
  • a collector chamber 18 is formed, which has a substantially elongated cylindrical shape and in Figure 1 from lying in the plane of the left portion of the left inlet tube 2 to to the right portion of the right inlet tube 6 extends.
  • the thermal insulation serving air gap 20 is formed.
  • This air gap 20 is in addition to the thermal insulation and a free expansion of the inlet pipes 2, 4, 6 to the outlet pipe 10 offer, as inlet and outlet pipes attached to each other only at one end and thus are arranged movably inside one another outside the end.
  • the air gap surrounds the collector chamber 18 on all sides.
  • Two shell-shaped, deep-drawn intermediate plates with a maximum thickness of 0.3 mm are arranged in the air gap 20 and completely surround the collector chamber 18.
  • An upper intermediate plate 22 is inserted into a lower intermediate plate 24, wherein the intermediate plates 22, 24 in the region of Bermmr selected 26 (Fig. 2) are easily clamped.
  • the intermediate plates 22, 24 already cover the inlet pipes 2 to 6 immediately after they have penetrated into the outlet pipe 10 (FIG. 3) and, as can be seen in FIG. 1, extend to the flange 16.
  • the intermediate plates 22, 24 complement each other to a very flexible, thin hollow body which is clamped between the inlet pipes 2 to 6 and the outlet pipe 10, without being permanently attached to the pipes and without having a supporting function.
  • Spacers in the form of generated during deep drawing of the intermediate plates 22, 24 point projections 28 serve the system and the spacing of the intermediate plates 22, 24 on the inlet tubes 2 to 6 and the outlet tube 10, so that the air gap 20 through the intermediate plates into an inner and a outer section 30, 32 is divided.
  • the intermediate plates 22, 24 at the inlet pipes 2 to 6 or the outlet pipe 10 can be selectively welded.
  • the intermediate plates 22, 24 are produced by deep drawing a film which, although a uniform thickness, but has a slightly knobbed surface, so that material can flow during deep drawing.
  • the intermediate sheets are made of temperature resistant material, e.g. AISI 309.
  • the exhaust manifold according to the figures 1 to 3 is described by way of example as a built-in part of an exhaust pipe system.
  • Walls 34 in the sense of this document. Examples of such walls 34 At least one of the walls 34 of the exhaust manifold is formed as a composite component of a plurality of superimposed, interconnected, foil-like layers, as described with reference to the examples according to FIGS. 4a to 4c to c can be executed.
  • Figures 4a to 4c show schematically and by way of example three embodiments of exhaust pipes 36 of an exhaust pipe system with one or more walls 34, wherein at least one wall 34 is a composite component.
  • FIG. 4 a shows an exhaust gas line 36, in which the exhaust gas flows in
  • each layer 38 consists of a metal foil, preferably a steel foil, but other metals such as aluminum are also suitable.
  • Figure 4b shows an exhaust pipe 36 with a double wall, i. an inner tube 40 and an outer tube 42.
  • the wall 34 of the inner and / or outer tube may be constructed as a composite member of film-like layers 38.
  • the tubes are wound from a foil.
  • the double-walled exhaust pipe 36 of Figure 4b additionally comprises a non-supporting intermediate plate 44.
  • This structure of the exhaust pipe 36 is in accordance with the structure of the air gap-insulated exhaust manifold according to Figures 1 to 3 functionally identical.
  • the inlet tubes 2 to 6 correspond to the inner tube 40
  • the outlet tube 10 corresponds to the outer tube 42
  • the upper and lower intermediate plate 22, 24 corresponds to the intermediate plate 44.
  • At least one of the illustrated walls 34 is constructed in this embodiment as a composite component of film-like layers.
  • this wall 34 constructed as a composite component is, in particular, the intermediate plate 44 of the exhaust gas line 36.
  • the thickness of the walls 34 is 0.05 mm to 0.1 mm. If a load-bearing wall is to be produced from the films, the thickness can optionally grow up to 0.5 mm.
  • Intermediate plate 44 constructed as a composite component of a plurality of layers 38 and may rest on the inner and / or outer tube 40, 42 or spaced from the inner and / or outer tube 40, 42.
  • a connecting region 46 between the upper shell 12 and the lower shell 14 of the outer tube 42 is shown in dashed lines in Figure 5.
  • the intermediate plate 44 extends in the connecting region 46 between the upper and lower shell 12, 14 to the outside.
  • the individual layers 34 of the intermediate plate 44, the upper and lower shell 12, 14 of the outer tube 42 and the intermediate plate 44 and the outer tube 42 connected in one step, preferably welded together.
  • the intermediate plate 44 is thereby fixed relative to the outer tube 42 in its position so that it can not rattle in the outer tube 42.
  • the film-like layers are spot-welded near the edge of the produced package or at sufficiently spaced points P, e.g. by laser.
  • the individual walls can also be welded to the projections 28 with each other and simultaneously with the adjacent tube wall.
  • the layers 38 are shown spaced apart for illustrative purposes, although in reality they abut each other in sections and are joined together by conventional joining methods. Soldering or welding, in particular laser welding, are preferably used joining methods. Between adjacent layers 38, in particular during thermal stress during operation of the exhaust pipe system, small intermediate spaces or micro gaps, which are usually filled with air. In order to avoid a full-surface contact of the layers 38 with each other, the films may have a slightly dimpled surface. This surface is formed during rolling, deep drawing or pressing of the film by means of not completely flat rolling or pressing surface.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)

Abstract

L'invention concerne un système de conduit de gaz d'échappement et en particulier un coude pour gaz d'échappement, qui présente une paroi (34). La paroi (34) est un composant composite constitué de plusieurs couches (38) en forme de feuilles superposées et reliées les unes aux autres.
PCT/EP2006/012610 2006-02-24 2006-12-29 Systeme de conduit de gaz d'echappement WO2007098802A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006008782.8 2006-02-24
DE200610008782 DE102006008782A1 (de) 2006-02-24 2006-02-24 Abgasleitungssystem

Publications (1)

Publication Number Publication Date
WO2007098802A1 true WO2007098802A1 (fr) 2007-09-07

Family

ID=37776887

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/012610 WO2007098802A1 (fr) 2006-02-24 2006-12-29 Systeme de conduit de gaz d'echappement

Country Status (2)

Country Link
DE (1) DE102006008782A1 (fr)
WO (1) WO2007098802A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008019999A1 (de) 2008-04-21 2009-10-22 J. Eberspächer GmbH & Co. KG Luftspaltisolierter Abgaskrümmer
JP2013213491A (ja) * 2012-03-08 2013-10-17 Calsonic Kansei Corp 二重管式エキゾースト・マニホールド

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS586723A (ja) * 1981-07-03 1983-01-14 Nippon Steel Corp 断熱複層管の連続製造方法
JPS59153916A (ja) * 1983-02-21 1984-09-01 Mitsubishi Heavy Ind Ltd 排気管
JPS6021135A (ja) * 1983-07-18 1985-02-02 Nippon Steel Corp 多層管の連続製造方法
WO1988003602A1 (fr) * 1986-11-14 1988-05-19 Á4Gm Energetikai Gépgyártó Leányvállalat Barriere thermique en couches
DE29810330U1 (de) * 1997-06-09 1998-09-24 ATD Corp., St. Louis, Mo. Geformte mehrschichtige Metallfolien-Abschirmsrukturen
US6209319B1 (en) * 1998-09-28 2001-04-03 Honda Giken Kogyo Kabushiki Kaisha Pipe assembly having inner and outer pipes
EP1503133A2 (fr) * 2003-07-29 2005-02-02 G + H Isolite GmbH Element isolé thermiquement

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS586723A (ja) * 1981-07-03 1983-01-14 Nippon Steel Corp 断熱複層管の連続製造方法
JPS59153916A (ja) * 1983-02-21 1984-09-01 Mitsubishi Heavy Ind Ltd 排気管
JPS6021135A (ja) * 1983-07-18 1985-02-02 Nippon Steel Corp 多層管の連続製造方法
WO1988003602A1 (fr) * 1986-11-14 1988-05-19 Á4Gm Energetikai Gépgyártó Leányvállalat Barriere thermique en couches
DE29810330U1 (de) * 1997-06-09 1998-09-24 ATD Corp., St. Louis, Mo. Geformte mehrschichtige Metallfolien-Abschirmsrukturen
US6209319B1 (en) * 1998-09-28 2001-04-03 Honda Giken Kogyo Kabushiki Kaisha Pipe assembly having inner and outer pipes
EP1503133A2 (fr) * 2003-07-29 2005-02-02 G + H Isolite GmbH Element isolé thermiquement

Also Published As

Publication number Publication date
DE102006008782A1 (de) 2007-08-30

Similar Documents

Publication Publication Date Title
EP1864006B1 (fr) Collecteur d'echappement isole par une couche d'air
DE69716535T2 (de) Keramischer katalytischer Konverter
EP0992659A2 (fr) Elément de conduit d'échappement et procédé de préparation d'un élément de conduit d'échappement
EP1206631B1 (fr) Collecteur de gaz d'echappement
EP1439895B1 (fr) Couche filtrante thermoresistante, corps filtrant et procede permettant de le produire
DE4111629C2 (de) Wärmebeständige Baueinheit für einen katalytischen Reaktor
DE19800926A1 (de) Wabenkörperanordnung mit einer mindestens eine Metallfolie enthaltenden Zwischenschicht
EP2734417B1 (fr) Ecran de protection acoustique et thermique
DE102006049014A1 (de) Verbundblech mit hohem Energieabsorptionsvermögen
DE102005017725A1 (de) Wabenkörper mit Doppelmantelrohr
DE10250716C1 (de) Verfahren zur Herstellung eines porösen, plattenförmigen Metallverbundes
WO2007098802A1 (fr) Systeme de conduit de gaz d'echappement
DE102016208881A1 (de) Abschirmbauteil
DE19539168A1 (de) Wabenkörper aus Blechlagen mit Verstärkungsstrukturen
EP1859132B1 (fr) Boitier d'un composant de traitement des gaz d'echappement dote d'une douille de renforcement
DE3101252A1 (de) Abgasschalldaempfer fuer brennkraftmaschinen und verfahren zu dessen herstellung
DE102005043196A1 (de) Verfahren zur Herstellung eines ringförmigen Wabenkörpers, sowie ringförmiger Wabenkörper
DE3035722C2 (de) Verfahren zur Herstellung hochtemperaturbeständiger Schalldämmplatten in Sandwichbauweise
EP2310644B1 (fr) Unité de traitement de gaz d'échappement avec des feuilles métalliques à faible épaisseur de matériau
EP1004376B1 (fr) Article de mousse métallique
DE102019114665A1 (de) Verbundstruktur, Fahrzeug und Verfahren zum Herstellen einer Verbundstruktur
AT510788B1 (de) Abgasschalldämpferanordnung
EP1847382A2 (fr) Dispositif d'isolation et son utilisation
DE102023200629A1 (de) Verfahren zum herstellen eines wärmeleitenden elements und wärmetauscher
DE10359502A1 (de) Verfahren zur Herstellung eines dreidimensionalen, flächigen Bauteils

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 06841214

Country of ref document: EP

Kind code of ref document: A1