EP0672822B1 - Catalyseur de gaz d'échappement, en particulier pour moteurs à combustion interne - Google Patents

Catalyseur de gaz d'échappement, en particulier pour moteurs à combustion interne Download PDF

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Publication number
EP0672822B1
EP0672822B1 EP95101317A EP95101317A EP0672822B1 EP 0672822 B1 EP0672822 B1 EP 0672822B1 EP 95101317 A EP95101317 A EP 95101317A EP 95101317 A EP95101317 A EP 95101317A EP 0672822 B1 EP0672822 B1 EP 0672822B1
Authority
EP
European Patent Office
Prior art keywords
plates
exhaust gas
constructed
smooth
catalyser
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.)
Expired - Lifetime
Application number
EP95101317A
Other languages
German (de)
English (en)
Other versions
EP0672822A1 (fr
Inventor
Heinz Lemberger
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP0672822A1 publication Critical patent/EP0672822A1/fr
Application granted granted Critical
Publication of EP0672822B1 publication Critical patent/EP0672822B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
    • F01N3/2807—Metal other than sintered metal
    • F01N3/281—Metallic honeycomb monoliths made of stacked or rolled sheets, foils or plates
    • 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
    • F01N2330/30—Honeycomb supports characterised by their structural details
    • F01N2330/32—Honeycomb supports characterised by their structural details characterised by the shape, form or number of corrugations of plates, sheets or foils
    • F01N2330/321—Honeycomb supports characterised by their structural details characterised by the shape, form or number of corrugations of plates, sheets or foils with two or more different kinds of corrugations in the same substrate

Definitions

  • the invention relates to an exhaust gas catalytic converter designed according to the preamble features of patent claim 1.
  • An exhaust gas catalytic converter of this type is known, for example, from DE-U 86 12 872.8.
  • an essentially S-shaped arrangement of the stacking layers is proposed in order to achieve sufficient thermal expansion distances, the stacking layers being firmly connected to the jacket sleeve directly by material, for example by soldering, via the ends of the respective sheets.
  • a non-generic exhaust gas catalytic converter in which sheets arranged transversely to the jacket sleeve are arranged essentially radially clamped as catalyst carrier bodies, so that the sheets bulge transversely to the radial extent when exposed to heat.
  • channels with large cross sections are required, so that this catalytic converter builds significantly larger compared to the generic type mentioned above.
  • the invention has for its object to improve a generic exhaust gas catalytic converter with regard to the thermal expansion possibilities of the stack layers so that with relatively free design of the stack layers by simple construction inexpensive devices are achieved which are easy to handle with regard to assembly and fastening of the stack layers or the carrier body in the jacket sleeve and are manageable.
  • the carrier body designed in accordance with the invention can be brought to a diameter which is advantageous for mounting in the casing sleeve by means of a radial pressure which is effective on the outer circumference, the end sections of the stacking plates which then resiliently bear against the inner circumference of the casing sleeve advantageously securely with the casing sleeve, in particular by soldering, are firmly connectable.
  • connection-side end sections of the sheets are designed as elastically flexible elements.
  • separate elements achieved a particularly cost-effective production with the preferred embodiment.
  • Cost-effective production is also achieved in an exhaust gas catalytic converter with stack layers made up of smooth and corrugated metal sheets in that the stack layers are each firmly connected to the casing sleeve via a corrugation of the corrugated metal sheets, the smooth sheets in each case in the area of this connection-side corrugation while leaving one free travel of this curl are designed.
  • the smooth sheets in their end sections be designed to match the corrugations of the corrugated sheets on the connection side.
  • the corrugations on the connection side which are otherwise smooth, are firmly arranged together with the corrugations on the casing sleeve.
  • the smooth sheets are designed in their end sections as at least half-closed rings which are arranged to engage in the corrugations.
  • the elastic stiffness can also be influenced by the choice of the ring radius and, if necessary, a material connection between the ring and corrugation.
  • end sections in the form of folds, which are alternately angled alternately, or end sections designed as essentially closed rings on the sheets forming the stack layers are suitable.
  • a respective exhaust gas catalytic converter 1 for an internal combustion engine (not shown) according to FIGS. 1 and 2 comprises, in a jacket sleeve 2, a catalyst carrier body 3 composed of stacking layers 4 of smooth sheets 5 and corrugated sheets 6.
  • the stacking layers 4 are arranged at least in sections transversely to the jacket sleeve 2 and with the casing sleeve 2 in each case at least one of the sheets 5, 6 at 7 firmly connected, for example by soldering.
  • connection-side end sections 14 of the sheets 5 and 6 are arranged in the connection-side end sections 14 of the sheets 5 and 6.
  • a design which is advantageous for cost-effective production due to simple construction provides that the connection-side end sections 14 of FIG Form sheets 5, 6 themselves as elastically flexible elements 8, 9, 10, 11, 12, 13.
  • the respective stack position 4 of the sub-figures 1 a, 1 b and 1 c each have a material connection or a firm connection via a corrugation 6 'of the corrugated sheet 6 to the casing sleeve 2 at 7, the smooth sheets 5 each in the Area of the corrugation 6 'are designed so that a free travel is achieved for this.
  • the plate 5 of the corrugation 6 'of the resilient element 8 is adapted in sections accordingly.
  • the corrugation 6 'correspondingly adapted sheet 5 to increase the elastic rigidity of the resilient element 9 with the corrugation 6' together on the casing sleeve 2 is fixed.
  • the sheet metal 5 is designed in its end section 14 as an open ring 15, which is arranged so as to engage the resilient element 10 or the corrugation 6 'in an elastic manner.
  • the sheets 5, 6 in the end sections 14 are formed repeatedly and alternately angled to form the flexible element 11, preferably as a relatively narrow fold 16.
  • the flexible element 12 of the stack layer 4 according to FIG. 2 b is one the open eyelet 17 formed in the sheets 5 and 6.
  • the stacking layer 4, as a flexible element 13 has an essentially closed ring 18 formed from one or both of the sheets 5, 6.
  • an exhaust gas catalytic converter 1 can have a catalytic converter carrier body 3 made of stack layers 4, preferably with differently designed flexible elements in the connection-side end sections 14 the versions shown in Figures 1 a to 2 c.

Landscapes

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

Claims (9)

  1. Pot catalytique pour gaz d'échappement, notamment de moteurs à combustion interne dans lequel :
    - un support de catalyseur (3), monté dans une douille enveloppe (2), est constitué de couches empilées (4) de tôles plates et/ou ondulées (5, 6),
    - chaque couche (5, 6) du côté de l'enveloppe est disposée transversalement à celle-ci et lui est reliée solidairement par une des tôles (5, 6),
    caractérisé en ce que
    des éléments flexibles élastiquement (8, 9, 10, 11, 12, 13) sont prévus aux extrémités (14) des tôles (5, 6) où se trouvent les liaisons à l'enveloppe.
  2. Pot catalytique selon la revendication 1,
    caractérisé en ce que
    les extrémités de liaison (14) des tôles (5, 6) ont la constitution d'éléments flexibles élastiques (8, 9, 10, 11, 12, 13).
  3. Pot catalytique selon la revendication 1 ou 2, comportant des couches empilées (4) faites de tôles plates et de tôles ondulées (5, 6),
    caractérisé en ce que
    - chaque couche empilée (4) est solidarisée en (7) avec la douille-enveloppe (2) par une ondulation (6') de la tôle (6),
    - chaque tôle plate (5), au niveau de l'ondulation (6') assurant la liaison, est conformée de manière à laisser l'ondulation (6') disposer d'une course élastique libre.
  4. Pot catalytique selon les revendications 1 à 3,
    caractérisé en ce que
    les tôles plates (5), à leurs extrémités (14) ont une conformation adaptée aux ondes (6') de liaison des tôles (6) correspondantes.
  5. Pot catalytique selon l'une des revendications 1 à 4,
    caractérisé en ce que
    les tôles (5) adaptées aux ondulations (6') de liaison et plates par ailleurs sont, en commun avec les ondulations (6'), solidarisées avec l'enveloppe (2).
  6. Pot catalytique selon une des revendications 1 à 3,
    caractérisé en ce que
    les tôles plates (5) à leurs extrémités (14) sont conformées en anneaux ouverts (15) logés et en prise à l'intérieur des ondulations de liaison (6').
  7. Pot catalytique selon une des revendications 1 à 3,
    caractérisé en ce que
    les tôles (5) des couches (4) à leurs extrémités (14) sont repliées plusieurs fois en alternance (plis 16).
  8. Pot catalytique selon une des revendications 1 à 3,
    caractérisé en ce que
    l'élément élastique (12) d'une couche empilée (4) a la forme d'un oeil ouvert (17) constitué d'au moins une des tôles (5, 6).
  9. Pot catalytique selon une des revendications 1 à 3,
    caractérisé en ce que
    une tôle (5, 6) d'une couche empilée (4) a son extrémité (14) située vers l'enveloppe conformée en anneau pratiquement fermé (18).
EP95101317A 1994-03-16 1995-02-01 Catalyseur de gaz d'échappement, en particulier pour moteurs à combustion interne Expired - Lifetime EP0672822B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4409026 1994-03-16
DE4409026A DE4409026A1 (de) 1994-03-16 1994-03-16 Abgaskatalysator, insbesondere für Brennkraftmaschinen

Publications (2)

Publication Number Publication Date
EP0672822A1 EP0672822A1 (fr) 1995-09-20
EP0672822B1 true EP0672822B1 (fr) 1997-01-08

Family

ID=6513002

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95101317A Expired - Lifetime EP0672822B1 (fr) 1994-03-16 1995-02-01 Catalyseur de gaz d'échappement, en particulier pour moteurs à combustion interne

Country Status (3)

Country Link
EP (1) EP0672822B1 (fr)
DE (2) DE4409026A1 (fr)
ES (1) ES2096489T3 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19922358C1 (de) 1999-05-14 2001-01-25 Helmut Swars Wabenkörper
DE19946462A1 (de) * 1999-09-28 2001-03-29 Bayerische Motoren Werke Ag Katalysator-Trägerkörper mit gestapelten und/oder gewickelten Blechlagen
ES2312795T3 (es) * 2002-08-02 2009-03-01 Emitec Gesellschaft Fur Emissionstechnologie Mbh Capa metalica con zonas de diferente espesor de material, procedimiento para fabricar esta capa metalica y cuerpo de nido de abeja fabricado al menos en parte con tales capas metalicas.
US9772149B2 (en) 2012-07-10 2017-09-26 Intramicron, Inc. Method for improving wall heat transfer in a chemical reactor
US10454147B2 (en) 2015-11-19 2019-10-22 Intramicron, Inc. Battery pack for energy storage devices

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT955185B (it) * 1972-04-29 1973-09-29 Saes Getter Spa Cartuccia catalitica
EP0245737B1 (fr) * 1986-05-12 1989-08-23 INTERATOM Gesellschaft mit beschränkter Haftung Corps en forme de nid d'abeilles, en particulier support pour catalyseur, avec des tôles métalliques superposées, repliées en boucles de sens contraire, et son procédé de fabrication
SU1483064A1 (ru) * 1987-10-30 1989-05-30 Филиал Научно-Исследовательского И Конструкторско-Технологического Института Тракторных И Комбайновых Двигателей Каталитический нейтрализатор
DE3833675A1 (de) * 1988-10-04 1990-04-05 Sueddeutsche Kuehler Behr Traegerkoerper fuer einen katalytischen reaktor zur abgasreinigung
DE4112354A1 (de) * 1991-04-16 1992-10-22 Behr Gmbh & Co Vorrichtung zum katalytischen entgiften von abgasen
DE4310933C2 (de) * 1993-04-02 1999-01-07 Bayerische Motoren Werke Ag Abgaskatalysator, insbesondere für Brennkraftmaschinen

Also Published As

Publication number Publication date
EP0672822A1 (fr) 1995-09-20
DE4409026A1 (de) 1995-11-09
DE59500082D1 (de) 1997-02-20
ES2096489T3 (es) 1997-03-01

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