EP2003301B1 - Dispositif de traitement de gaz d'échappement - Google Patents

Dispositif de traitement de gaz d'échappement Download PDF

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Publication number
EP2003301B1
EP2003301B1 EP08157392.5A EP08157392A EP2003301B1 EP 2003301 B1 EP2003301 B1 EP 2003301B1 EP 08157392 A EP08157392 A EP 08157392A EP 2003301 B1 EP2003301 B1 EP 2003301B1
Authority
EP
European Patent Office
Prior art keywords
exhaust treatment
widening
flange
treatment device
insert
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
EP08157392.5A
Other languages
German (de)
English (en)
Other versions
EP2003301A1 (fr
Inventor
Marco Wenz
Andreas Balle
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
Eberspaecher Exhaust Technology 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.)
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Publication date
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Publication of EP2003301A1 publication Critical patent/EP2003301A1/fr
Application granted granted Critical
Publication of EP2003301B1 publication Critical patent/EP2003301B1/fr
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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
    • 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
    • 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

Definitions

  • the present invention relates to an exhaust gas treatment device for an exhaust system of an internal combustion engine, which is arranged in particular in a motor vehicle.
  • Exhaust gas treatment devices such as catalysts and particulate filters, usually have a tubular housing, which can be configured basically in shell construction and optionally has two half-shells which are fastened to each other along two opposite longitudinal sides along outwardly projecting flange webs, for example by means of a weld.
  • This housing serves to receive at least one exhaust gas treatment insert through which exhaust gas can flow, which can be, for example, a ceramic monolith.
  • a bearing mat can be provided for fixing the position of the exhaust gas treatment insert in the housing, which coaxially surrounds the respective exhaust gas treatment insert, which consists of a bearing material and which is pressed radially between the respective exhaust gas treatment insert and the housing.
  • the respective, with the bearing mat wrapped exhaust treatment insert is inserted into one of the half-shells, then the other half-shell is placed to secure the two half-shells together.
  • the half shells must be pressed radially towards each other in order to achieve the radial compression of the bearing mat.
  • This type of introduction of exhaust treatment inserts in a housing may be referred to as "half shell scanning". It has been found that in half-shell scanning in particular when the bearing mat to achieve the desired radial compression in its thickness direction has an excess over the formed between the housing and the exhaust treatment insert radial gap, bearing material can penetrate between the Flanschstegen, resulting in errors in the particular can lead to automated production.
  • a weld for connecting the flange webs can not be performed properly.
  • a welding robot can report an error and remain stationary if the flange webs to be welded together do not abut each other due to the intermediate bearing material. In this case, the stock material must then be replenished manually until it is removed from the region lying between the flange webs. Production interruptions and manual rework increased the cost of production.
  • the present invention deals with the problem for an exhaust gas treatment device of the aforementioned Specify an improved embodiment, which is characterized in particular by the fact that their production is relatively inexpensive feasible.
  • an improved embodiment which is characterized in particular by the fact that their production is relatively inexpensive feasible.
  • in the manufacture of a penetration of bearing material in the area between each other on the same longitudinal side opposite flange webs should be avoided.
  • the invention is based on the general idea of providing an escape space on the housing side in the region of the flange webs opposite the same longitudinal side, into which the bearing mat can yield during the pressing of the half-shells.
  • This additional space is provided in a flange flange having the flange.
  • the respective escape space is created in that, at least in one half shell, at least one longitudinal side in the respective flange region is widened, that is to say a local increase in diameter for receiving bearing material. Such expansion can be particularly easy to bring in the production of the respective half-shell, whereby no additional manufacturing step is required.
  • both half-shells in the respective flange region each have such a widening, which together form a receiving zone or pocket.
  • the two expansions thus work together to create the necessary alternative space together.
  • a symmetrical arrangement of the escape space is realized in the flange area, which is advantageous for receiving the bearing material during the pressing of the half-shells.
  • FIG. 1 includes an exhaust gas treatment device 1, which may be, for example, a particulate filter or a catalyst, a housing 2, an exhaust gas treatment insert 3 and a bearing mat 4.
  • the exhaust gas treatment device 1 is for installation in an exhaust system of an internal combustion engine, which is arranged in particular in a motor vehicle can be.
  • the housing 2 is designed tubular and is realized in half-shell construction, so that it has two half-shells 5 and 6.
  • the half-shells 5, 6 are attached to each other at two, in particular diametrically opposite, longitudinal sides.
  • each half-shell 5, 6 in the region of these longitudinal sides each have a flange web 7 or 8, which in each case protrudes from the respective half-shell 5, 6 to the outside, preferably radially.
  • the respective longitudinal sides of the two flange webs 7, 8 are directly adjacent to each other.
  • the attachment of the two half shells 5, 6 to each other for example, by means of continuous welds, which connect the abutting flange webs 7, 8 together.
  • the half-shells 5, 6 may expediently be designed as identical parts.
  • the half-shells 5, 6 extend in the profile of the housing 2 in each case by about 180 °.
  • the exhaust gas treatment insert 3 is traversed by the exhaust gas and is arranged in the housing 2.
  • the exhaust treatment insert 3 may be a catalyst insert or a particulate filter cartridge. It is clear that more than one exhaust gas treatment insert 3 can in principle be arranged in the housing 2, with a plurality of exhaust gas treatment inserts 3 then being arranged expediently in succession in the axial direction.
  • the exhaust gas treatment insert 3 can be made in particular of ceramic. Further, the exhaust treatment insert 3 may be configured as a monolith.
  • the bearing mat 4 consists of a more suitable bearing material. For example, swelling mats and fiber mats made of heat-resistant materials are known.
  • the bearing mat 4 envelops the respective exhaust gas treatment insert 3 in the circumferential direction, ie coaxially and is in the shown installed state radially between the respective exhaust gas treatment insert 3 and the housing 2. In order to achieve the desired positional fixation, in particular in the axial direction, between the exhaust gas treatment insert 3 and the housing 2, the bearing mat 4 is radially compressed in the installed state.
  • This radial compression must be generated during the production of the exhaust gas treatment device 1 and takes place when the half shells 5, 6 are pressed against one another on the longitudinal sides in the respective flange region 9 or 10 marked by a brace directly abutting the two flange webs 7, 8.
  • At least one of the half-shells 5, 6 has an expansion 11 on at least one longitudinal side of the housing 2 in the respective flange region 9, 10, which serves to receive bearing material.
  • the respective half-shell 5, 6 each have such a widening 11 on both longitudinal sides.
  • both half-shells 5, 6 can each be equipped with such a widening 11 on the respective longitudinal side.
  • both half-shells 5, 6 on both longitudinal sides in each case such a widening 11.
  • the widenings 11 formed on the two half shells 5, 6 are configured such that they cooperate on the respective longitudinal side or in the respective flange region 9, 10 in such a way that they together form a receiving zone 12, which can also be referred to as a receiving pocket 12 or short pocket 12.
  • a symmetrical design is preferred, so that the two widenings 11 of the respective pocket 12 are designed mirror-symmetrically in profile with respect to a plane 13.
  • this plane 13 the flange webs 7, 8 of the respective flange 9, 10 abut each other.
  • This plane 13 can in particular form the parting plane of the half-shells 5, 6.
  • the widenings 11 are characterized in that a radial distance 14 between the housing 2 and the exhaust gas treatment insert 3 within the widening 11 is greater than in the circumferential direction next to the widening 11.
  • the respective expansion 11 is expediently shaped so that it merges in the circumferential direction in the respective flange web 7, 8. This transition can be done in profile with a circular arc segment 15. Furthermore, the respective widening 11 in the profile away from the respective flange web 7, 8 can preferably pass smoothly into the adjoining conventional contour of the respective half shell 5, 6. Between the transition to the contour of the remaining half shell 5, 6 and the transition to the respective flange web 7, 8, the respective expansion 11 may have a straight section in profile, which may be oriented tangentially, for example.
  • the respective expansion 11 is dimensioned in the radial direction and / or in the circumferential direction so that sufficient escape space for the bearing material is created, so that the risk of compression of bearing material between the flange webs 7, 8 is reduced.
  • This risk exists during manufacture when the respective exhaust gas treatment insert 3 with the bearing mat 4 enveloping it is inserted into the one half shell 6 and the other half shell 5 must be pressed in order to abut the flange webs 7, 8 in the flange regions 9, 10 bring to. Since the bearing mat 4 must be pressed radially to achieve its fixing effect, this compression takes place in particular when pressing the half-shells 5, 6 together.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (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)

Claims (9)

  1. Dispositif de traitement de gaz d'échappement pour une installation d'échappement d'un moteur à combustion interne, en particulier dans un véhicule automobile,
    - avec un boîtier (2) tubulaire qui présente deux demi-coques (5, 6) qui sont fixées sur deux côtés longitudinaux opposés respectivement le long de nervures bridées (7, 8) dépassant vers l'extérieur radialement l'un à l'autre,
    - avec au moins un insert de traitement de gaz d'échappement (3) pouvant être traversé par des gaz d'échappement qui est agencé dans le boîtier (2),
    - avec une natte de palier (4) se composant d'un matériau de palier, entourant coaxialement l'insert de traitement de gaz d'échappement (3) respectif qui est compressé pour la fixation en position de l'insert de traitement de gaz d'échappement (3) dans le boîtier (2) radialement entre l'insert de traitement de gaz d'échappement (3) respectif et le boîtier (2),
    caractérisé en ce
    - qu'au moins pour une demi-coque (5, 6) sur au moins un côté longitudinal dans une zone de bride (9, 10) présentant la nervure bridée (7, 8) respective un élargissement (11) est réalisé pour la réception de matériau de palier divergeant radialement lors de la pression l'une sur l'autre des demi-coques (5, 6) pour le soudage des nervures bridées (7, 8),
    - que sur le côté longitudinal respectif les deux demi-coques (5, 6) dans la zone de bride (9, 10) respective présentent un tel élargissement (11) qui forment ensemble une zone de réception (12),
    - que les deux élargissements (11) de la zone de réception (12) dans le profil par rapport à un plan (13) dans lequel les nervures bridées (7, 8) reposent l'une contre l'autre, sont conçus de manière symétrique.
  2. Dispositif de traitement de gaz d'échappement selon la revendication 1, caractérisé en ce
    que l'élargissement respectif (11) se trouve dans une section longitudinale sans moulure de la demi-coque (5, 6) respective.
  3. Dispositif de traitement de gaz d'échappement selon la revendication 1 ou 2, caractérisé en ce
    que l'élargissement respectif (11) caractérisé en ce qu'une distance radiale (14) entre le boîtier (2) et l'insert de traitement de gaz d'échappement (3) respectif dans l'élargissement (11) est plus grand que dans le sens périphérique à côté de l'élargissement (11).
  4. Dispositif de traitement de gaz d'échappement selon l'une quelconque des revendications 1 à 3,
    caractérisé en ce
    que l'élargissement respectif (11) passe dans le sens périphérique en la nervure bridée (7, 8) respective.
  5. Dispositif de traitement de gaz d'échappement selon l'une quelconque des revendications 1 à 4,
    caractérisé en ce
    que l'élargissement respectif (11) passe dans le profil avec un segment d'arc de cercle (15) en la nervure bridée (7, 8) respective.
  6. Dispositif de traitement de gaz d'échappement selon l'une quelconque des revendications 1 à 5,
    caractérisé en ce
    que l'élargissement respectif (11) passe dans le profil dans une section éloignée de la nervure bridée (7, 8) respective en continu en le contour se raccordant à celle-ci dans le sens périphérique de la demi-coque (5, 6) respective.
  7. Dispositif de traitement de gaz d'échappement selon l'une quelconque des revendications 1 à 6,
    caractérisé en ce
    que la demi-coque respective (5, 6) présente sur les deux côtés longitudinaux un tel élargissement (11).
  8. Dispositif de traitement de gaz d'échappement selon l'une quelconque des revendications 1 à 7,
    caractérisé en ce
    que les deux demi-coques (5, 6) présentent sur les deux côtés longitudinaux un tel élargissement (11) qui forment sur chaque côté longitudinal ensemble une zone de réception (12) ou poche (12).
  9. Dispositif de traitement de gaz d'échappement selon l'une quelconque des revendications 1 à 8,
    caractérisé en ce
    que l'insert de traitement de gaz d'échappement (3) respectif est un insert de catalyseur ou un insert de filtre de particule qui peut être fabriqué en particulier en céramique et/ou qui peut être configuré de préférence en tant que monolithe.
EP08157392.5A 2007-06-15 2008-06-02 Dispositif de traitement de gaz d'échappement Active EP2003301B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200710028326 DE102007028326A1 (de) 2007-06-15 2007-06-15 Abgasbehandlungseinrichtung

Publications (2)

Publication Number Publication Date
EP2003301A1 EP2003301A1 (fr) 2008-12-17
EP2003301B1 true EP2003301B1 (fr) 2019-03-20

Family

ID=39745130

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08157392.5A Active EP2003301B1 (fr) 2007-06-15 2008-06-02 Dispositif de traitement de gaz d'échappement

Country Status (2)

Country Link
EP (1) EP2003301B1 (fr)
DE (1) DE102007028326A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56159608U (fr) * 1980-04-26 1981-11-28
DE4427459A1 (de) * 1994-08-03 1996-02-08 Roth Technik Gmbh Abgasanlage
US5888457A (en) * 1995-10-16 1999-03-30 Honda Giken Kogyo Kabushiki Kaisha Catalytic converter

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0711245B2 (ja) * 1988-02-09 1995-02-08 株式会社ユタカ技研 触媒コンバータ
DE3922667C2 (de) * 1989-03-17 1994-12-01 Eberspaecher J Vorrichtung zur katalytischen Entgiftung zur Entrußung und/oder zur Schalldämpfung von Verbrennungsmotor-Abgasen mit doppelwandigem Gehäuse
DE4236893A1 (en) * 1991-11-16 1993-05-19 Volkswagen Ag Exhaust gas system for internal combustion engines - has exhaust pipes leading from cylinder head exhaust duct and catalytic converter arrangement
WO2000039437A1 (fr) * 1998-12-28 2000-07-06 Corning Incorporated Convertisseur utilise dans le traitement de gaz

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56159608U (fr) * 1980-04-26 1981-11-28
DE4427459A1 (de) * 1994-08-03 1996-02-08 Roth Technik Gmbh Abgasanlage
US5888457A (en) * 1995-10-16 1999-03-30 Honda Giken Kogyo Kabushiki Kaisha Catalytic converter

Also Published As

Publication number Publication date
DE102007028326A1 (de) 2008-12-18
EP2003301A1 (fr) 2008-12-17

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