WO2006008114A1 - Dispositif d'epuration des gaz d'echappement pour vehicules a moteur - Google Patents

Dispositif d'epuration des gaz d'echappement pour vehicules a moteur Download PDF

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Publication number
WO2006008114A1
WO2006008114A1 PCT/EP2005/007799 EP2005007799W WO2006008114A1 WO 2006008114 A1 WO2006008114 A1 WO 2006008114A1 EP 2005007799 W EP2005007799 W EP 2005007799W WO 2006008114 A1 WO2006008114 A1 WO 2006008114A1
Authority
WO
WIPO (PCT)
Prior art keywords
mat
housing
monolith
gas purification
purification device
Prior art date
Application number
PCT/EP2005/007799
Other languages
German (de)
English (en)
Inventor
Thomas Buckel
Walter Stoepler
Original Assignee
Faurecia Abgastechnik 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 Faurecia Abgastechnik Gmbh filed Critical Faurecia Abgastechnik Gmbh
Priority to DE112005000400T priority Critical patent/DE112005000400B4/de
Publication of WO2006008114A1 publication Critical patent/WO2006008114A1/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
    • 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
    • F01N3/2839—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration
    • F01N3/2853—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration using mats or gaskets between catalyst body and housing
    • F01N3/2857—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration using mats or gaskets between catalyst body and housing the mats or gaskets being at least partially made of intumescent material, e.g. unexpanded vermiculite
    • 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
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/022—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
    • 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
    • F01N2330/00—Structure of catalyst support or particle filter
    • F01N2330/02—Metallic plates or honeycombs, e.g. superposed or rolled-up corrugated or otherwise deformed sheet metal
    • F01N2330/04—Methods of manufacturing
    • 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
    • F01N2350/00—Arrangements for fitting catalyst support or particle filter element in the housing
    • F01N2350/02—Fitting ceramic monoliths in a metallic housing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Definitions

  • the invention relates to an exhaust gas purification device for motor vehicles.
  • a device comprises a housing in which a monolith is mounted.
  • a monolith is a ceramic body, which is traversed in the axial direction by a multiplicity of flow channels. Due to this structure and due to the ceramic material, monoliths are very fragile. They are therefore fixed to a bearing mat which is pressed radially in the radial direction and is arranged in a gap between the monolith and the housing, essentially made of mineral fiber.
  • swelling mats are used, which are mineral fiber mats in which Blähglimmerpumble are stored.
  • this object is achieved in that in a - with respect to the axial direction - middle portion of the housing, deformation is at risk, in the gap at least a second portion of a non-swelling bearing mat is arranged in one of the first, from a swelling mat formed part region (7) bounded, rests from the peripheral surface of the monolith (2) to the inside of the housing (1) extending receiving space (18) of the gap space (13).
  • This measure ensures that the negative effect of using a non-swelling mat in a deformation-endangered area is at least partially compensated.
  • the second subregion of non-swelling mat material is completely encompassed by the first subregion, swelling mats having a high pressing force are arranged in the regions of the gap space adjoining the end faces of the housing.
  • the housing wall is substantially more dimensionally stable than middle wall sections in these areas, for example because of the connection with housing funnels, so that there is no need to fear wall deformation despite the high pressing force of a swelling mat.
  • the receiving space for the second portion of the bearing mat extends from the monolith to the inside of the housing, it is completely available for receiving a non-swelling fiber mat available.
  • a further advantage is that the risk of breakage due to uneven application of force to the monolith, as explained in more detail below, is reduced.
  • the risk of breakage is further reduced by the edges of a second subregion extending substantially transversely, obliquely or curved with respect to the axial direction. With an edge profile parallel to the axial direction, the dividing line between the first and the second partial region would extend parallel to the flow channels passing through the monolith. Due to the different pressing force of the two partial regions, a shearing force running along a flow channel would result on the monoliths. The risk of breakage at such a load is now much greater than in a transversely or shear force acting obliquely to the flow channels.
  • a second portion which has two edge portions extending transversely to the axial direction and two curved edge portions connecting them.
  • a second portion is disposed only on one side of the housing.
  • a swelling mat is located in the gap space assigned to the other sides.
  • Such a design makes sense, for example, in case of triangular in cross-section housings in which one side is wider and therefore more vulnerable to deformation than the other two, narrower sides.
  • each side of the housing is assigned a second portion.
  • an erosion protection preferably in the form of a first partial area, can be provided there.
  • the first and second partial areas can also be composed of several mat layers or individual matts.
  • FIG. 1 shows a mounting mat in plan view and a housing a Mono ⁇ and the mounting mat-containing housing in cross section
  • FIG. 2 is a plan view of the housing of FIG. 1 in the direction of arrow II
  • 3 shows a further exemplary embodiment in a representation corresponding to FIG. 1, FIG.
  • FIG. 4 shows a further exemplary embodiment in a representation corresponding to FIG. 1
  • FIGS. 5 and 6 show further exemplary embodiments for the design of positioning mats
  • FIG. 7 shows a bearing mat with a multi-layered first partial area.
  • FIG. 1 shows a housing 1 which has an approximately triangular cross-sectional shape.
  • a monolith 2 is arranged, wherein between this and the inside of the housing, a gap space 3 is present.
  • a Lager ⁇ mat 4 is arranged, which is supported with its outer side on the inside of the housing 1 and with its inside on the peripheral surface of the monolith.
  • the bearing mat 4 is preferably single-layered, but may also be composed of a plurality of mat layers 18, 19 (FIG. 7).
  • the bearing mat In the uninstalled state, the bearing mat is an approximately rectangular section, which has a recess 5 on one narrow side and an extension 6 which fits into this on the other narrow side.
  • the storage mat 4 has a total of two partial areas formed by different mats, namely a first partial area 7 and a second partial area 8. The first subregion is formed by a swelling mat.
  • Swelling mats are, for example, the mats available under the names Unifrax AV2 and Interam 100 in question.
  • the second subregion 8 is flanked in the axial direction by two first subregions 7a, which are integral with the region 7, with the subregions 7a overlapping extend the entire circumference of the monolith 2.
  • the housing 1 has two short sides 10 and a longer side 12. In the assembled state, the second portion 8 is positioned approximately centrally on the longer side 12 (see also FIG. 2).
  • the first portion 7 defines a receiving space 20 which extends from the peripheral surface of the monolith to the inside of the housing.
  • the receiving space 20 is completely filled with the second portion 8 (see also Fig. 7).
  • the second portion 8 has two parallel to each other and transverse to the axial direction 9 and transverse to the flow channels not shown) of the monolith extending edge portions 14.
  • a second partial region 8 ' is indicated by dashed lines 15, as is known from US Pat. No. 6,613,294 B2, FIG. 4.
  • Such a configuration would mean that in the entire area region enclosed by the lines 15, the monolith 2 would be exposed from its upper side to a one-sided load resulting from the different pressing force of swelling mat and non-swelling mat.
  • the side edges of the subarea 8 ', represented by the dashed lines 15, would act like shearing points running along the flow channels of the monolith, where the monolith could easily break due to the unilateral loading. Experiments have shown that this is indeed the case.
  • the partial region 8 is flan ⁇ ed in the axial direction of mat regions 7a, which preferably extend around the entire circumference of the monolith.
  • the force imbalance is now reduced because the partial regions 7a develop the same pressing force as the corresponding surface regions of the swelling mat arranged on the sides 10.
  • the probability of breakage for a monolith is further minimized by the fact that the edge regions 16 of the subarea 8 connecting the two parallel edge regions 14 do not extend in the axial direction or in the direction of the flow channels passing through a monolith 2, but have a curved course, as a result of which the formation a breaking line extending along a flow channel is prevented.
  • FIGS. 3 and 4 show two exemplary embodiments in which a plurality of second partial regions 8d-h are arranged in recesses 18 of the first partial region 7 in the mounting mat 4. Every second sub-area 8d-h is assigned to a deformation-endangered side of the housing 1.
  • the subregion 8a is not in the form of a soap, or designed as an inlay. It is moreover a strip extending over the entire length of the mounting mat 4a, which is flanked by two first partial regions 7a which likewise extend over the entire length of the mounting mat 4a.
  • the partial region 8a is offset axially relative to the partial regions 7a, so that the recess 5 is formed on one side and the extension 6 on the other side.
  • a centrally arranged second subregion 8b is present.
  • the front edges 17 of the mounting mat 4b are formed by a second partial region 8c, that is to say by a non-swelling mineral fiber mat. It is also conceivable that another material is used as edge protection.
  • Fig. 7 shows a bearing mat 4c, whose portion 7 of two
  • Matt layers 18, 19 is composed.
  • the mat layers 18, 19 may consist of identical or different source mat materials.
  • the receiving space 20 already mentioned above is arranged centrally as in the bearing mat of FIG. 1 and passes through the subarea 7.
  • a complementary subregion 8i made of a single-layer, non-swelling body is inserted into the receiving space 20 used sermatte. It is conceivable that a second subarea 8i also consists of several non-swelling mat layers or that only the second subarea 8i is formed from a plurality of individual mats. The same applies to the embodiments described above. However, preference is given to working with single-layered first and second partial regions, because this makes it easier to assemble an exhaust gas purification device.

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

Abstract

L'invention concerne un dispositif d'épuration des gaz d'échappement pour véhicules à moteur, comprenant un monolithe (2) mis en place dans un boîtier (1), un espace à fente (3) situé entre le monolithe (2) et une section du boîtier entourant celui-ci, et une natte de stockage (4) disposée dans ledit espace, servant à supporter le monolithe, essentiellement constituée de fibres minérales, dispositif caractérisé en ce qu'au moins une première zone partielle (7) de la natte de stockage (4) est formée d'une natte gonflante, et en ce qu'au moins une seconde zone partielle (8) est formée d'une natte non gonflante, et en ce que dans une zone intermédiaire, vue en direction axiale, du boîtier (1), est disposée au moins une seconde zone partielle (8) qui est insérée dans un logement (18) de l'espace à fente (13), délimité par la première zone partielle (7) et s'étendant de la surface périphérique du monolithe (2) jusqu'à la partie intérieure du boîtier (1).
PCT/EP2005/007799 2004-07-16 2005-07-18 Dispositif d'epuration des gaz d'echappement pour vehicules a moteur WO2006008114A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112005000400T DE112005000400B4 (de) 2004-07-16 2005-07-18 Abgasreinigungsvorrichtung für Kraftfahrzeuge

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004034574A DE102004034574A1 (de) 2004-07-16 2004-07-16 Abgasreinigungsvorrichtung für Kraftfahrzeuge
DE102004034574.0 2004-07-16

Publications (1)

Publication Number Publication Date
WO2006008114A1 true WO2006008114A1 (fr) 2006-01-26

Family

ID=35057083

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/007799 WO2006008114A1 (fr) 2004-07-16 2005-07-18 Dispositif d'epuration des gaz d'echappement pour vehicules a moteur

Country Status (3)

Country Link
KR (1) KR100870600B1 (fr)
DE (2) DE102004034574A1 (fr)
WO (1) WO2006008114A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015016097A1 (fr) * 2013-07-30 2015-02-05 イビデン株式会社 Dispositif de purification des gaz d'échappement

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008014362B4 (de) * 2008-03-14 2014-08-14 Audi Ag Lagermatte für einen Keramikkörper einer Abgasreinigungsanlage, insbesondere für eine Katalysatorträgeranordnung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4985212A (en) * 1987-09-29 1991-01-15 Kabushiki Kaisha Toshiba Support apparatus for a ceramic honeycomb element
EP0719912A1 (fr) * 1994-12-30 1996-07-03 Firma J. Eberspächer Dispositif de traitement de gaz d'échappement d'un moteur à combustion interne
DE19803063A1 (de) * 1998-01-28 1999-07-29 Eberspaecher J Gmbh & Co Verfahren zur Halterung und Isolation von Keramikmonolithen in einer Kraftfahrzeug-Abgasanlage einschließlich hiernach gefertigte Lagerung
EP1247953A2 (fr) * 2001-04-07 2002-10-09 Adam Opel Ag Convertisseur catalytique pour un système de gaz d'échappement
US6613294B2 (en) 1996-06-18 2003-09-02 3M Innovative Properties Company Hybrid mounting system for pollution control devices

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7645426B2 (en) * 2004-04-14 2010-01-12 3M Innovative Properties Company Sandwich hybrid mounting mat

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4985212A (en) * 1987-09-29 1991-01-15 Kabushiki Kaisha Toshiba Support apparatus for a ceramic honeycomb element
EP0719912A1 (fr) * 1994-12-30 1996-07-03 Firma J. Eberspächer Dispositif de traitement de gaz d'échappement d'un moteur à combustion interne
US6613294B2 (en) 1996-06-18 2003-09-02 3M Innovative Properties Company Hybrid mounting system for pollution control devices
DE19803063A1 (de) * 1998-01-28 1999-07-29 Eberspaecher J Gmbh & Co Verfahren zur Halterung und Isolation von Keramikmonolithen in einer Kraftfahrzeug-Abgasanlage einschließlich hiernach gefertigte Lagerung
EP1247953A2 (fr) * 2001-04-07 2002-10-09 Adam Opel Ag Convertisseur catalytique pour un système de gaz d'échappement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015016097A1 (fr) * 2013-07-30 2015-02-05 イビデン株式会社 Dispositif de purification des gaz d'échappement
JPWO2015016097A1 (ja) * 2013-07-30 2017-03-02 イビデン株式会社 排ガス浄化装置

Also Published As

Publication number Publication date
DE112005000400B4 (de) 2008-07-03
KR20070014138A (ko) 2007-01-31
KR100870600B1 (ko) 2008-11-25
DE112005000400A5 (de) 2007-07-26
DE102004034574A1 (de) 2006-02-16

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