WO1996027735A1 - Element alveolaire metallique - Google Patents

Element alveolaire metallique Download PDF

Info

Publication number
WO1996027735A1
WO1996027735A1 PCT/EP1996/000427 EP9600427W WO9627735A1 WO 1996027735 A1 WO1996027735 A1 WO 1996027735A1 EP 9600427 W EP9600427 W EP 9600427W WO 9627735 A1 WO9627735 A1 WO 9627735A1
Authority
WO
WIPO (PCT)
Prior art keywords
honeycomb body
sleeve
body according
jacket tube
tube
Prior art date
Application number
PCT/EP1996/000427
Other languages
German (de)
English (en)
Inventor
Norbert Bergau
Original Assignee
Emitec Gesellschaft Für Emissionstechnologie Mbh
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 Emitec Gesellschaft Für Emissionstechnologie Mbh filed Critical Emitec Gesellschaft Für Emissionstechnologie Mbh
Publication of WO1996027735A1 publication Critical patent/WO1996027735A1/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
    • F01N13/18—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
    • F01N13/1894—Construction facilitating manufacture, assembly, or disassembly the housing of the assembly consisting of two or more parts, e.g. two half-shells the parts being assembled in longitudinal direction
    • 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
    • F01N3/2842—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration specially adapted for monolithic supports, e.g. of honeycomb type

Definitions

  • the invention relates to a metallic honeycomb body, in particular a catalyst carrier body for internal combustion engines.
  • a metallic honeycomb body has walls which form a multiplicity of channels through which a fluid can flow.
  • the honeycomb body is arranged and held in at least one inner and one outer jacket tube.
  • Metallic honeycomb bodies in particular as catalyst support bodies, are known in the most varied of variants, for example by EP-A-0 245 737, EP-B-0 430 945.
  • Metallic honeycomb bodies are produced, for example, from layers of structured sheets, the sheets being one above the other are layered and / or entwined. It is also known to produce the metallic honeycomb body by powder metallurgy.
  • EP-A-0 212 243 describes a holder for a catalyst carrier body which enables the catalyst carrier body to be tension-free elongated. This arrangement has only one jacket tube, which concentrically surrounds the catalyst carrier body at a distance. In many forms of catalyst carrier bodies, however, a jacket tube, which directly surrounds the actual honeycomb body and contains its structure, is indispensable.
  • EP-B-0 435 956 describes an exhaust gas catalytic converter which has an inner jacket tube which is present for reasons of stability and which is surrounded approximately concentrically by an outer jacket tube.
  • the inner jacket tube is firmly connected in an end region to the end region of the outer jacket tube, preferably welded with a round weld seam.
  • the other end of the inner jacket tube extends freely into the interior of the outer jacket tube and can thus expand unhindered when the temperature rises.
  • DE 43 03 950 C1 also describes a metallic honeycomb body, in particular a catalyst carrier body for motor vehicles with an internal combustion engine, with walls which form a multiplicity of channels through which a fluid can flow, the honeycomb body in at least one inner and one outer Jacket tube is arranged and supported, known.
  • the inner jacket tube is divided into at least three sections, namely a first along a section of the length of the honeycomb body on this outside area, a second conically widening area and a third area on the inside of the outer jacket tube.
  • This cranked shape of the inner jacket ensures that the honeycomb body is thermally decoupled from the outer jacket tube everywhere except at the location of the second partial area, since the air gap that forms forms good insulation. Free elongation in all directions is achieved.
  • the object of the present invention is the development of a generic honeycomb body which has good thermal and mechanical decoupling between the honeycomb body and the outer jacket tube, but is nevertheless held securely and with little vibration.
  • the metallic honeycomb body according to the invention is characterized in that the outer casing tube has at least two conical collars which are arranged at a distance from one another and are directed in opposite directions.
  • a neck which is in contact with the respective collar is formed and is connected to the inner casing tube.
  • the pairing of collar and neck creates a mechanical connection between the inner jacket tube in which the honeycomb body is arranged and the outer jacket tube, which is a sliding connection within certain limits.
  • the two collars or the two necks are preferably arranged between the two necks or the two collars. This design enables thermal expansion of the individual components of the honeycomb body without the mechanical stresses arising from alternating thermal loads putting too much strain on the metallic honeycomb body.
  • the inner jacket tube is not exposed to any external influences, so that these can be disregarded when selecting the material.
  • Both the collar and the necks can be formed all around. This has the advantage that an almost closed air gap is created between two pairings of collar and neck, which provides good thermal insulation of the honeycomb body. No contribution is required additional insulating layers between the inner and the outer jacket tube.
  • the collar on a sleeve which is inserted into the outer jacket tube.
  • the collar can be formed by reducing the sleeve diameter. This is advantageous in terms of production technology and can help to compensate for tolerances. It is also possible to form a neck on a sleeve which is placed on the inner jacket tube.
  • a honeycomb body is preferred in which the sleeve is materially connected to the outer or inner casing tube.
  • the material connection between the sleeve and the inner or outer jacket tube can be made by welding, preferably laser welding.
  • connection of the sleeve to the jacket tube in question by soldering, preferably by brazing.
  • soldering preferably by brazing.
  • Such a connection is of particular interest when the metallic honeycomb body is soldered to the inner jacket tube, since all the necessary connections can then be made during a manufacturing step.
  • a honeycomb body is preferred, in each of which a neck is formed in an end region of the inner jacket tube.
  • a honeycomb body is preferred, in each of which a neck is formed in an end region of the inner jacket tube.
  • a honeycomb body is preferred in which the neck is formed in one piece with the inner jacket tube. This has the advantage that the weight of the honeycomb body is reduced. This also minimizes the cost of manufacturing such a honeycomb body.
  • the proposed design of the honeycomb body is particularly favorable if the outer casing tube is formed in two parts with a flange connection between two collars. In this way, simple assembly of the metallic honeycomb body is achieved. Furthermore, the tightly fitting parts, collar and neck provide an additional gas seal in series with the flange itself, so that complex additional sealing systems can be dispensed with. Even with a slight leak in the flange, there is no significant leakage of exhaust gas due to the close-fitting collar-neck combination. However, the honeycomb body can be replaced with little assembly effort, without the outer jacket tube also having to be replaced.
  • the inner casing tube can be tensioned accordingly via the two pairs of neck and collar.
  • the outer jacket tube be divided into a plane which is essentially perpendicular to its longitudinal extent.
  • the outer jacket tube be designed in such a way that it has a cross-section, preferably a constant widening, between two adjacent collars.
  • the outer jacket tube here has a first section which is adjoined by a collar which extends outwards from the outer jacket tube and which merges into a second section which has the enlarged cross section.
  • the second section is followed by a third section, with between the second and third sections cut a second collar is formed, which runs opposite to the first collar.
  • the honeycomb body is arranged within an exhaust system.
  • the exhaust system includes exhaust pipes.
  • the cross section of the exhaust pipes is smaller than the cross section of the honeycomb body.
  • a diffuser to the honeycomb body. If the collar is formed by a sleeve, it is proposed to arrange the sleeve in the diffuser and / or the confuser so that the outer surface of the sleeve is at a distance from the diffuser wall or the confuser wall.
  • An annular space is created between the outer surface of the sleeve and the wall of the confuser or dissusor, which is preferably closed on its two end faces, so that the diffuser or confuser has thermal insulation.
  • the sleeve consequently serves both as part of the thermal insulation and as a collar for the neck arranged on the inner jacket tube.
  • FIG. 1 shows a schematic longitudinal section through a honeycomb body according to the invention with an inner and an outer jacket tube
  • Figure 2 shows a longitudinal section through a second embodiment of a honeycomb body
  • FIG. 3 shows a third exemplary embodiment of a honeycomb body
  • FIG. 4 shows a longitudinal section through a third exemplary embodiment of a honeycomb body
  • Figure 5 shows a fifth embodiment of a honeycomb body
  • Figure 6 shows a sixth embodiment of a honeycomb body in
  • the exemplary embodiments shown are constructed rotationally symmetrically with respect to the longitudinal axis 12. Such a rotationally symmetrical structure is not mandatory.
  • the invention can also be embodied by honeycomb bodies which have a polygonal cross section.
  • FIG. 1 shows a metallic honeycomb body 1, in particular a catalyst carrier body for internal combustion engines.
  • the metallic honeycomb body has walls 2 which form a plurality of channels 3 through which a fluid, in particular an exhaust gas, can flow.
  • the honeycomb body 1 is enclosed in an inner jacket tube 4.
  • the casing tube 5 is formed in two parts.
  • the division plane is essentially perpendicular to the Longitudinal axis 12 of the arrangement.
  • each part has a flange 13.
  • the flanges 13 have bores, not shown, through which fastening means, for. B. screws, can extend through.
  • Two sleeves 10, 11 are introduced into the outer casing tube 5 and positioned at a distance from one another.
  • the sleeves 10, 11 can with the inner surface of the casing tube, for. B. by soldering, be connected to one another.
  • Each sleeve has a circumferential collar 6 or 7.
  • the collars 6, 7 point from the outer casing tube 5 to the honeycomb body 1, and are directed in opposite directions.
  • Each sleeve has a neck 8 or 9.
  • the necks 8, 9 are arranged between the two collars 6, 7 and rest on them.
  • the parts of the arrangement expand differently.
  • the honeycomb body extends radially, the collar and neck slide on one another, so that no mechanical tension arises. With an axial expansion of the honeycomb body, the collar and neck come to rest against one another.
  • FIG. 2 shows a second exemplary embodiment of a honeycomb body according to the invention.
  • the honeycomb body 1 is surrounded by an inner jacket tube 4.
  • the two ends of the inner jacket tube are to the outer jacket tube 5 bent so that these bent sections of the inner jacket tube 4 each at one. Form a neck 8 or 9 at the end.
  • the further structure of the honeycomb body corresponds to the illustration in FIG. 1. To avoid repetition, reference is made in full to the description of FIG. 1.
  • FIG. 3 shows a further exemplary embodiment of the honeycomb body according to the invention.
  • the honeycomb body 1 is surrounded by an inner jacket tube 4.
  • a sleeve 14 or 15, which has a collar 8 or 9, is arranged on the respective end region of the honeycomb body 1.
  • the collars 8, 9 are formed in opposite directions.
  • the outer casing tube 5 has a first section 16, which is followed by a second section 17.
  • a collar 6 is formed between the partial sections 16 and 17 and is directed outward from the outer casing tube.
  • a third section 18 adjoins the section 17, the two sections 17, 18 being connected to one another via a collar 7.
  • the section 17 has an enlarged cross section of the casing tube.
  • the cross section of the honeycomb body 1 essentially corresponds to the cross section of the sections 16 and 18, respectively.
  • the schematically illustrated honeycomb body 1, designated 1 in FIG. 4, is enclosed by an inner jacket tube 4.
  • An outer jacket tube 5 surrounding the honeycomb body 1 is provided concentrically with the inner jacket tube 4.
  • the outer casing tube 5 is in two parts educated.
  • the division plane runs essentially perpendicular to the longitudinal axis 12 of the arrangement.
  • each part 19 and 20 has a flange 13.
  • the flanges 13 can be connected to one another with the known means.
  • the part 19 is connected to a diffuser 21.
  • the connection can e.g. B. done by welding.
  • a collar 6 is formed on the diffuser 21, on which a neck 8 which is part of the inner jacket tube 4 bears.
  • a sleeve 16 is arranged, on which a collar 7 is formed.
  • the sleeve 16 is V-shaped in cross section.
  • the part of the sleeve 16 adjacent to the collar 7 bears against a confuser 22.
  • the part 20 of the outer casing tube 5 can be formed in one piece with the confuser 22.
  • FIG. 1 Another embodiment of an arrangement is shown in FIG.
  • the outer casing tube 5 is formed in two parts. A part 19 of the outer casing tube 5 is preceded by a diffuser 21. The cross section of the outer jacket tube after the honeycomb body remains constant. In the outer casing tube 5, two sleeves 14, 15 are arranged, each having a collar 6, 7.
  • FIG. A diffuser 21 is connected upstream of the outer casing tube 5.
  • the diffuser 21 can be connected to a pipe 23, which is part of an exhaust system.
  • a sleeve 24 is arranged, which is at a distance from the diffuser with its outer surface, so that between the diffuser wall and the outer surface of the sleeve 24 Gap 25 is formed.
  • the gap 2. is closed.
  • the sleeve 24 has a tubular section 26 which, as shown, is connected to the tube 23. In the upper region of the sleeve 24, this rests on the outer casing tube 5.
  • Appropriate training can also be provided on a confuser.

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)

Abstract

La présente invention concerne un élément alvéolaire métallique, et plus précisément un support de catalyseur à utiliser dans des moteurs à combustion interne. Les parois (2) de l'élément alvéolaire (1) forment une multiplicité de canaux (3) par lesquels peut s'écouler un fluide. Cet élément (1) est placé dans des manchons tubulaires de protection, interne (4) et externe (5). Le manchon externe (5) présente au moins deux rebords coniques (6, 7) suffisamment espacés l'un de l'autre et orientés dans des directions opposées. A chacun de ces rebords (6, 7) est juxtaposé un collet (8, 9) reposant sur chaque rebord (6, 7). Chaque collet (8, 9) est relié au manchon interne (4).
PCT/EP1996/000427 1995-03-08 1996-02-01 Element alveolaire metallique WO1996027735A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19508217.6 1995-03-08
DE1995108217 DE19508217A1 (de) 1995-03-08 1995-03-08 Metallischer Wabenkörper

Publications (1)

Publication Number Publication Date
WO1996027735A1 true WO1996027735A1 (fr) 1996-09-12

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ID=7756029

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1996/000427 WO1996027735A1 (fr) 1995-03-08 1996-02-01 Element alveolaire metallique

Country Status (2)

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DE (1) DE19508217A1 (fr)
WO (1) WO1996027735A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999011911A1 (fr) 1997-09-03 1999-03-11 Emitec Gesellschaft Für Emissionstechnologie Mbh Ensemble support de catalyseur pour montage dans le compartiment moteur
EP1464798A1 (fr) * 2003-03-31 2004-10-06 HONDA MOTOR CO., Ltd. Structure pour maintenir un corps catalytique dans un conduit d'échappement
DE10357953B4 (de) * 2003-12-11 2006-10-26 Emitec Gesellschaft Für Emissionstechnologie Mbh Halterung für eine Abgasreinigungskomponente eines Abgassystems
DE19755703B4 (de) * 1997-12-15 2008-03-13 Emitec Gesellschaft Für Emissionstechnologie Mbh Katalysatorträgeranordnung für einen motornahen Einbau
CN111255546A (zh) * 2020-01-22 2020-06-09 苏州怀德自控科技有限公司 一种具有耐久性的汽车排气用三元催化转换器

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6217832B1 (en) * 1998-04-30 2001-04-17 Catalytica, Inc. Support structures for a catalyst
US7163666B2 (en) 2000-11-13 2007-01-16 Kawasaki Jukogyo Kabushiki Kaisha Thermally tolerant support structure for a catalytic combustion catalyst
GB2381219B (en) * 2001-10-25 2004-04-14 Eminox Ltd Gas treatment apparatus
DE102007002556A1 (de) * 2007-01-17 2008-07-24 Purem Abgassysteme Gmbh & Co. Kg Katalysatorbauteil mit wenigstens einem Katalysatorrohr und wenigstens einer Zwischenwand
DE102007011956A1 (de) * 2007-03-09 2008-09-11 J. Eberspächer GmbH & Co. KG Abgasbehandlungseinrichtung und zugehöriges Herstellungsverfahren
DE102007032267B4 (de) * 2007-07-11 2018-01-18 Emcon Technologies Germany (Augsburg) Gmbh Abgasanlagen-Rohr mit maßgeschneiderter Wandstärke
DE102008010736B4 (de) * 2008-02-23 2014-08-14 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Metallkatalysator
DE102010019959A1 (de) * 2010-05-08 2011-11-10 J. Eberspächer GmbH & Co. KG Schalldämpfer
DE102010045871A1 (de) 2010-09-17 2012-03-22 Emitec Gesellschaft Für Emissionstechnologie Mbh Abgasbehandlungseinheit für eine AGR-Leitung
DE102010053452A1 (de) * 2010-12-06 2012-06-06 Mann + Hummel Gmbh Filtereinheit zur Abgasnachbehandlung von Brennkraftmaschinen

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2179257A1 (fr) * 1972-04-07 1973-11-16 Kali Chemie Ag
US3841839A (en) * 1972-11-17 1974-10-15 Corning Glass Works Catalytic converter
US4248833A (en) * 1979-08-28 1981-02-03 Chuo Hatsujo Kabushiki Kaisha Exhaust gas purifier system for internal combustion engine
EP0367065A1 (fr) * 1988-11-04 1990-05-09 HEINRICH GILLET GMBH & CO. KG Catalyseur de gaz d'échappement pour véhicule
EP0435956B1 (fr) * 1988-10-11 1994-07-06 Emitec Gesellschaft für Emissionstechnologie mbH Catalyseur a systeme d'enveloppe double

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2179257A1 (fr) * 1972-04-07 1973-11-16 Kali Chemie Ag
US3841839A (en) * 1972-11-17 1974-10-15 Corning Glass Works Catalytic converter
US4248833A (en) * 1979-08-28 1981-02-03 Chuo Hatsujo Kabushiki Kaisha Exhaust gas purifier system for internal combustion engine
EP0435956B1 (fr) * 1988-10-11 1994-07-06 Emitec Gesellschaft für Emissionstechnologie mbH Catalyseur a systeme d'enveloppe double
EP0367065A1 (fr) * 1988-11-04 1990-05-09 HEINRICH GILLET GMBH & CO. KG Catalyseur de gaz d'échappement pour véhicule

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999011911A1 (fr) 1997-09-03 1999-03-11 Emitec Gesellschaft Für Emissionstechnologie Mbh Ensemble support de catalyseur pour montage dans le compartiment moteur
DE19755703B4 (de) * 1997-12-15 2008-03-13 Emitec Gesellschaft Für Emissionstechnologie Mbh Katalysatorträgeranordnung für einen motornahen Einbau
EP1464798A1 (fr) * 2003-03-31 2004-10-06 HONDA MOTOR CO., Ltd. Structure pour maintenir un corps catalytique dans un conduit d'échappement
US7155902B2 (en) 2003-03-31 2007-01-02 Honda Giken Kogyo Kabushiki Kaisha Structure for fixing catalytic body to exhaust pipe
DE10357953B4 (de) * 2003-12-11 2006-10-26 Emitec Gesellschaft Für Emissionstechnologie Mbh Halterung für eine Abgasreinigungskomponente eines Abgassystems
CN111255546A (zh) * 2020-01-22 2020-06-09 苏州怀德自控科技有限公司 一种具有耐久性的汽车排气用三元催化转换器
CN111255546B (zh) * 2020-01-22 2021-05-04 苏州怀德自控科技有限公司 一种具有耐久性的汽车排气用三元催化转换器

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