EP0336115A1 - Catalyseur pour gaz de combustion avec monolithe en métal - Google Patents

Catalyseur pour gaz de combustion avec monolithe en métal Download PDF

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Publication number
EP0336115A1
EP0336115A1 EP89103696A EP89103696A EP0336115A1 EP 0336115 A1 EP0336115 A1 EP 0336115A1 EP 89103696 A EP89103696 A EP 89103696A EP 89103696 A EP89103696 A EP 89103696A EP 0336115 A1 EP0336115 A1 EP 0336115A1
Authority
EP
European Patent Office
Prior art keywords
monolith
exhaust gas
outer housing
catalytic converter
converter according
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.)
Granted
Application number
EP89103696A
Other languages
German (de)
English (en)
Other versions
EP0336115B1 (fr
Inventor
Axel Dipl.-Ing. Böhmer
Rainer Dipl.-Ing. Scholz
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.)
Leistritz AG
Original Assignee
Leistritz 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 Leistritz AG filed Critical Leistritz AG
Publication of EP0336115A1 publication Critical patent/EP0336115A1/fr
Application granted granted Critical
Publication of EP0336115B1 publication Critical patent/EP0336115B1/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
    • F01N3/2839—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
    • 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
    • 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
    • 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
    • F01N2470/10—Tubes having non-circular cross section

Definitions

  • the invention relates to an exhaust gas catalyst with a honeycomb structured metal monolith, which is surrounded by thermal insulation and is mounted in a metallic outer housing.
  • the metal monolith is supported by a surrounding mineral fiber mat in the supporting outer housing and that the transition between the monolith shell and funnel or between the sections of the outer housing divided in a radial transverse plane is designed as a sliding seat.
  • this spring mat mounting in the load-bearing outer housing - in contrast to the only thermal insulation of the inner housing from an outer housing, as in the prior art - has the advantage that the mineral fiber mat supports the metal monoliths on the circumference in such a way that the monolith jacket is much weaker can or - which will be explained in more detail below - could even be completely omitted.
  • the mineral fiber mat can be designed to be continuous over the entire catalytic converter, or alternatively from consist of different materials in sections, whereby in the simplest case an aluminum silicate fiber mat can be used.
  • the inner ring forming the profile stiffening can optionally also be welded to the monolith jacket on the inlet or outlet side .
  • the stiffening of the funnels can also be achieved by the fact that the funnel is provided with a curl at the free end, this optionally according to could be rolled inside or outside.
  • a particularly simple and reliable exhaust gas catalytic converter results in an embodiment of the invention in that the special axial displacement lock is used by mounting the metal monolith in the load-bearing outer housing in such a way that the metal monolith is formed without the previously usual steel jacket and the spirally wound coil body, which is usually designed as a winding body Provides metal monoliths with a friction-enhancing outer profile and is supported by a swelling mat in the load-bearing outer housing, the inner funnels ending freely in front of the metal monolith and the gaps between the monolith and the funnels preferably being covered by external bands.
  • the exhaust gas catalytic converter shown in FIG. 1 consists of a continuous load-bearing outer housing 1 with the internal and external funnels 3 and 4 at a distance, which are thermally insulated by an aluminum silicate fiber mat 5.
  • the metal monolith 6 with a preferably made of steel sheet monolith jacket 7, which protrudes at the ends, is mounted with the aid of a mineral fiber mat 5 ', preferably in the form of a swelling mat, in the load-bearing outer casing 1, preferably roughening the monolith casing, and possibly also the inner surface of the outer casing 1 is provided so that in connection with the strong compression of the mineral fiber mat 5 'an axial displacement lock of the metal monolith 6 in the outer housing 1 is given.
  • the inner funnels 3 and 4 are provided with a profile stiffening formed by an outer ring 9 welded on the outside, this outer ring being supported with a sliding fit in the load-bearing outer housing 1.
  • This outer ring counteracts the risk of the funnels collapsing at high temperatures, which exists in particular in the case of the mostly oval cross-sectional shapes which modern catalytic converters usually have (cf. FIG. 7).
  • the profile stiffening of the outlet-side funnel 4 shown here is realized by a corresponding profiling instead of welded-on inner and outer rings.
  • the first type of friction-increasing outer profiling is formed in that the sheets 15, which form the outer surface of the monolith, are so thin that they are dented inward by the high pressure of the swelling mat 5 ', as shown in Fig. 8 .
  • the metal monolith 6 is provided with a soldered spiral 17, which is embedded in the swelling mat and thus ensures such firm storage that even in the event of strong impacts and impacts, the metal monolith 6 cannot slide axially in the outer housing 1.
  • FIG. 12 shows an embodiment in which the bearing mat 5, which supports the funnel 3 in the outer housing 2, is a simple mineral fiber mat, which in this context should simply mean that it is not a swelling mat.
  • This simple mineral fiber mat is pulled over the gap between the funnel 3 and the monolith 6, thus ensuring that the swelling mat 5 'in the storage area of the monolith 6 does not exert any pressure on the funnel 3, so that a separate funnel stiffening is not necessary in this embodiment .

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)
EP89103696A 1988-04-02 1989-03-03 Catalyseur pour gaz de combustion avec monolithe en métal Expired - Lifetime EP0336115B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3811224A DE3811224A1 (de) 1988-04-02 1988-04-02 Abgaskatalysator mit metallmonolith
DE3811224 1988-04-02

Publications (2)

Publication Number Publication Date
EP0336115A1 true EP0336115A1 (fr) 1989-10-11
EP0336115B1 EP0336115B1 (fr) 1992-07-29

Family

ID=6351287

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89103696A Expired - Lifetime EP0336115B1 (fr) 1988-04-02 1989-03-03 Catalyseur pour gaz de combustion avec monolithe en métal

Country Status (2)

Country Link
EP (1) EP0336115B1 (fr)
DE (2) DE3811224A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0450348A1 (fr) * 1990-03-28 1991-10-09 HEINRICH GILLET GmbH & CO. KG Convertisseur catalytique pour moteurs à combustion interne
EP0472009A1 (fr) * 1990-08-22 1992-02-26 Firma J. Eberspächer Dispositif de purification de gaz d'échappement avec deux corps de traitement de gaz l'un après l'autre
US5173267A (en) * 1988-10-11 1992-12-22 Emitec Gesellschaft Fur Emissionstechnologie Mbh Catalyst with a double casing system
US5190732A (en) * 1988-10-11 1993-03-02 Emitec Gesellschaft Fur Emissionstechnologie Mbh Catalyst with a double casing system
US6185819B1 (en) 1996-07-10 2001-02-13 Volkswagen Ag Catalytic converter housing arrangement
EP1241331A3 (fr) * 2001-03-17 2004-02-25 Volkswagen Aktiengesellschaft Cône d'entrée et de sortie d'un boítier de catalyseur
WO2005001252A1 (fr) * 2003-06-27 2005-01-06 Emitec Gesellschaft Für Emissionstechnologie Mbh Systeme de retraitement des gaz d'echappement pourvu d'une enveloppe a retour et procede de retraitement des gaz d'echappement correspondant
US7258842B2 (en) 2000-09-20 2007-08-21 Emitec Gesellschaft Fuer Emissionstechnologie Mbh Catalyst assembly with a fixed catalyst carrier body
WO2022268799A1 (fr) * 2021-06-23 2022-12-29 Vitesco Technologies GmbH Dispositif de post-traitement de gaz d'échappement ayant de petites cavités

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3930680A1 (de) * 1989-09-14 1991-03-28 Behr Gmbh & Co Katalysator zur abgasreinigung mit dehnungen ausgleichender lagerung
DE4024015A1 (de) * 1990-07-28 1992-02-06 Boysen Friedrich Gmbh Co Kg Vorrichtung zur katalytischen reinigung bzw. zerlegung von heissen abgasen
DE4041856A1 (de) * 1990-12-24 1992-06-25 Behr Gmbh & Co Vorrichtung zur katalytischen entgiftung von abgasen, vorzugsweise von verbrennungskraftmaschinen
DE4223648C2 (de) * 1992-07-17 1996-02-01 Zeuna Staerker Kg Katalytische Abgasreinigungsvorrichtung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2312794A1 (de) * 1973-03-15 1974-09-19 Volkswagenwerk Ag Katalysator zur katalytischen reinigung von abgasen
US3850453A (en) * 1972-10-04 1974-11-26 Questor Corp Method and apparatus for connecting insulating conduits
DE3433938A1 (de) * 1984-09-15 1985-10-24 Bayerische Motoren Werke AG, 8000 München Abgaskonverter fuer brennkraftmaschinen
EP0177479A1 (fr) * 1984-08-17 1986-04-09 VOEST-ALPINE St. Aegyd Aktiengesellschaft Dispositif de purification catalytique de gaz d'échappement ainsi que procédé pour sa production
EP0193072A1 (fr) * 1985-02-22 1986-09-03 Leistritz Aktiengesellschaft Dispositif d'épuration catalytique des gaz d'échappement
EP0256416A1 (fr) * 1986-08-07 1988-02-24 Leistritz Aktiengesellschaft Dispositif d'épuration de gaz d'échappement

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2302746A1 (de) * 1973-01-20 1974-07-25 Sueddeutsche Kuehler Behr Traegermatrix fuer einen katalytischen reaktor zur abgasreinigung bei brennkraftmaschinen, insb. ottomotoren von kraftfahrzeugen, sowie ein herstellungsverfahren
DE3506219A1 (de) * 1985-02-22 1986-09-04 LEISTRITZ Maschinenfabrik GmbH, 8500 Nürnberg Katalytische abgasentgiftungseinrichtung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3850453A (en) * 1972-10-04 1974-11-26 Questor Corp Method and apparatus for connecting insulating conduits
DE2312794A1 (de) * 1973-03-15 1974-09-19 Volkswagenwerk Ag Katalysator zur katalytischen reinigung von abgasen
EP0177479A1 (fr) * 1984-08-17 1986-04-09 VOEST-ALPINE St. Aegyd Aktiengesellschaft Dispositif de purification catalytique de gaz d'échappement ainsi que procédé pour sa production
DE3433938A1 (de) * 1984-09-15 1985-10-24 Bayerische Motoren Werke AG, 8000 München Abgaskonverter fuer brennkraftmaschinen
EP0193072A1 (fr) * 1985-02-22 1986-09-03 Leistritz Aktiengesellschaft Dispositif d'épuration catalytique des gaz d'échappement
EP0256416A1 (fr) * 1986-08-07 1988-02-24 Leistritz Aktiengesellschaft Dispositif d'épuration de gaz d'échappement

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5173267A (en) * 1988-10-11 1992-12-22 Emitec Gesellschaft Fur Emissionstechnologie Mbh Catalyst with a double casing system
US5190732A (en) * 1988-10-11 1993-03-02 Emitec Gesellschaft Fur Emissionstechnologie Mbh Catalyst with a double casing system
EP0450348A1 (fr) * 1990-03-28 1991-10-09 HEINRICH GILLET GmbH & CO. KG Convertisseur catalytique pour moteurs à combustion interne
EP0472009A1 (fr) * 1990-08-22 1992-02-26 Firma J. Eberspächer Dispositif de purification de gaz d'échappement avec deux corps de traitement de gaz l'un après l'autre
US6185819B1 (en) 1996-07-10 2001-02-13 Volkswagen Ag Catalytic converter housing arrangement
US7258842B2 (en) 2000-09-20 2007-08-21 Emitec Gesellschaft Fuer Emissionstechnologie Mbh Catalyst assembly with a fixed catalyst carrier body
EP1241331A3 (fr) * 2001-03-17 2004-02-25 Volkswagen Aktiengesellschaft Cône d'entrée et de sortie d'un boítier de catalyseur
WO2005001252A1 (fr) * 2003-06-27 2005-01-06 Emitec Gesellschaft Für Emissionstechnologie Mbh Systeme de retraitement des gaz d'echappement pourvu d'une enveloppe a retour et procede de retraitement des gaz d'echappement correspondant
WO2022268799A1 (fr) * 2021-06-23 2022-12-29 Vitesco Technologies GmbH Dispositif de post-traitement de gaz d'échappement ayant de petites cavités

Also Published As

Publication number Publication date
EP0336115B1 (fr) 1992-07-29
DE58901910D1 (de) 1992-09-03
DE3811224A1 (de) 1989-10-12
DE3811224C2 (fr) 1991-08-08

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