EP0437817A1 - Carter de catalyseur - Google Patents

Carter de catalyseur Download PDF

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Publication number
EP0437817A1
EP0437817A1 EP90125249A EP90125249A EP0437817A1 EP 0437817 A1 EP0437817 A1 EP 0437817A1 EP 90125249 A EP90125249 A EP 90125249A EP 90125249 A EP90125249 A EP 90125249A EP 0437817 A1 EP0437817 A1 EP 0437817A1
Authority
EP
European Patent Office
Prior art keywords
beads
radius
mat
catalytic converter
converter housing
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
EP90125249A
Other languages
German (de)
English (en)
Other versions
EP0437817B1 (fr
Inventor
Manfred Sagitzki
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 EP0437817A1 publication Critical patent/EP0437817A1/fr
Application granted granted Critical
Publication of EP0437817B1 publication Critical patent/EP0437817B1/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
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • F01N2470/12—Tubes being corrugated

Definitions

  • the invention relates to a catalytic converter housing with conical exhaust gas supply and discharge ports and an essentially cylindrical central part for receiving the honeycomb-shaped carrier bodies, which are mechanically elastically supported and thermally insulated by spring mats, in particular a swelling mat.
  • the invention is therefore based on the object of designing a catalyst housing of the type mentioned in such a way that the stiffening beads on the one hand ensure the best possible stiffening function for the housing and on the other hand any risk of damage to the carrier body and the spring mat is avoided.
  • the central part is provided with wholly or partially circumferential corrugated beads, the inwardly curved inner beads being connected to one another by outwardly curved outer beads and the distance d between the inner beads being greater than them double radius R1 and approximately equal to or less than four times the radius R1
  • the beads are preferably round beads with an approximately circular arc-shaped cross section
  • other bead shapes such as trapezoidal, rectangular or combined shapes, can of course also be used, in which case the inscribed or rewritten circular arc should satisfy the above formula - there is an optimal compromise between the two contradicting demands for the best possible stiffening of the housing on the one hand and the prevention of damage to the carrier body.
  • the radius R2 of the outer bead can be chosen to be significantly smaller than the radius R1 of the inner bead, since in this way the point load on the carrier body is reduced with the same beading wavelength.
  • the configuration of the corrugated shafts according to the invention also results, inter alia, in an increase in the bending moment of the shell cross section of the two shell halves of the catalyst housing in the circumferential direction, which is particularly important in the non-circular catalyst housings which have been preferred recently.
  • the permissible / required mat pressing force on the monoliths / carrier bodies is also important.
  • the variables radii, length of the corrugation shaft and corrugation height
  • this mat pressing force can be adapted to the requirements using the variables mentioned.
  • FIG. 1 shows a catalytic converter housing 1 with a central section 2, to which a conical inlet funnel 3 and an equally conical outlet funnel (not shown) are connected.
  • a conical inlet funnel 3 and an equally conical outlet funnel (not shown) are connected.
  • the middle part 2 one or more catalyst carrier bodies 5 made of ceramic or metal are supported by a spring-elastic bearing mat 4, preferably a so-called swelling mat, the spring mat 4 preferably also extending over the area of the inlet and outlet funnels and in this area through an inner funnel 6 is covered.
  • this inner funnel 6 ends with a small gap distance in front of the end face 7 of the catalyst carrier body 5.
  • the central section 2 of the housing 1 is provided with corrugated beads such that inner beads 8 are connected to one another by outer beads 9.
  • the housing 1 is provided in addition to the corrugated beads 8, 9 in accordance with FIGS. 1 and 2 with a plurality of longitudinal stiffening beads 10 distributed over the circumference.
  • the longitudinal beads should preferably be located in the region of the (usually naturally rounded) corner edges of the housing.
  • the longitudinal infiltration prevents it from swinging through (accordion effect).
  • the corrugated beads themselves result in an increase in the bending moment of the shell cross section in the circumferential direction by the displacement of material from the bending line.
  • the greatest possible bead height should be aimed at, however cannot be sought in isolation, since the corrugation height is necessarily also linked to the radii of the outer and inner corrugations, so that ultimately the optimal geometry of the corrugated corrugations represents a compromise between partially contradicting individual requirements. Due to the basic specifications of the design formula in the claims, such an optimal compromise can be realized very quickly for every application.

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  • 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)
EP90125249A 1990-01-19 1990-12-21 Carter de catalyseur Expired - Lifetime EP0437817B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4001419A DE4001419C1 (en) 1990-01-19 1990-01-19 Exhaust gas catalyser - comprises corrugated housing with middle section having elastic mat, covering several catalyst supports
DE4001419 1990-01-19

Publications (2)

Publication Number Publication Date
EP0437817A1 true EP0437817A1 (fr) 1991-07-24
EP0437817B1 EP0437817B1 (fr) 1992-10-14

Family

ID=6398344

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90125249A Expired - Lifetime EP0437817B1 (fr) 1990-01-19 1990-12-21 Carter de catalyseur

Country Status (2)

Country Link
EP (1) EP0437817B1 (fr)
DE (2) DE4001419C1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2703105A1 (fr) * 1993-03-26 1994-09-30 Ecia Equip Composants Ind Auto Dispositif de purification catalytique des gaz d'échappement d'un moteur, notamment de véhicule automobile.
DE102020129043A1 (de) 2020-11-04 2022-05-05 Mhg Fahrzeugtechnik Gmbh Vorrichtung zur Anströmung eines Abgasreinigungselements

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3926072C2 (de) * 1989-08-07 1994-01-13 Emitec Emissionstechnologie Katalysator zur Abgasreinigung mit elastischen Elementen zum Ausgleich von Längsdehnungen
DE4218198C2 (de) * 1992-06-03 1994-08-18 Manfred Sagitzki Katalysator-Gehäuse
DE19743196A1 (de) * 1997-09-30 1999-04-01 Emitec Emissionstechnologie Katalysatorträgeranordnung
BR9812396A (pt) 1997-09-30 2000-09-12 Emitec Emissionstechnologie Disposição de corpo em colméia com seções de suporte
DE102004058268B4 (de) * 2003-12-11 2016-05-19 Continental Automotive Gmbh Verstärktes Gehäuse einer Abgasreinigungskomponente
DE102018212660A1 (de) * 2018-07-30 2020-01-30 Audi Ag Gehäuse für eine Abgasreinigungsvorrichtung, Abgasreinigungsvorrichtung sowie Verfahren zum Herstellen einer Abgasreinigungsvorrichtung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1148540A (en) * 1965-12-24 1969-04-16 Alusuisse Sheathing element
US4020539A (en) * 1973-03-19 1977-05-03 Chrysler Corporation Catalytic reactor for automobile
GB2020190A (en) * 1978-05-04 1979-11-14 Ti Silencers Ltd Constructing a catalyst assembly
GB2048104A (en) * 1979-04-16 1980-12-10 Gen Motors Corp Catalytic converters for internal combustion engine exhaust gases
US4335078A (en) * 1977-09-13 1982-06-15 Nissan Motor Company, Limited Catalytic reactor for automotive exhaust line

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2301646A1 (de) * 1973-01-13 1974-08-01 Pforzheim Metallschlauch Katalysatortopf fuer abgasleitungen
DE3531807A1 (de) * 1985-09-06 1987-03-19 Leistritz Maschfabrik Paul Abgasreinigungsvorrichtung fuer kraftfahrzeuge
US5346675A (en) * 1988-12-16 1994-09-13 Usui Kokusai Sangyo Kabushiki Kaisha Exhaust gas cleaning apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1148540A (en) * 1965-12-24 1969-04-16 Alusuisse Sheathing element
US4020539A (en) * 1973-03-19 1977-05-03 Chrysler Corporation Catalytic reactor for automobile
US4335078A (en) * 1977-09-13 1982-06-15 Nissan Motor Company, Limited Catalytic reactor for automotive exhaust line
GB2020190A (en) * 1978-05-04 1979-11-14 Ti Silencers Ltd Constructing a catalyst assembly
GB2048104A (en) * 1979-04-16 1980-12-10 Gen Motors Corp Catalytic converters for internal combustion engine exhaust gases

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2703105A1 (fr) * 1993-03-26 1994-09-30 Ecia Equip Composants Ind Auto Dispositif de purification catalytique des gaz d'échappement d'un moteur, notamment de véhicule automobile.
DE102020129043A1 (de) 2020-11-04 2022-05-05 Mhg Fahrzeugtechnik Gmbh Vorrichtung zur Anströmung eines Abgasreinigungselements

Also Published As

Publication number Publication date
EP0437817B1 (fr) 1992-10-14
DE4001419C1 (en) 1991-06-13
DE59000362D1 (de) 1992-11-19

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