EP0437817B1 - Carter de catalyseur - Google Patents

Carter de catalyseur Download PDF

Info

Publication number
EP0437817B1
EP0437817B1 EP90125249A EP90125249A EP0437817B1 EP 0437817 B1 EP0437817 B1 EP 0437817B1 EP 90125249 A EP90125249 A EP 90125249A EP 90125249 A EP90125249 A EP 90125249A EP 0437817 B1 EP0437817 B1 EP 0437817B1
Authority
EP
European Patent Office
Prior art keywords
folds
matting
radius
catalyst housing
catalyst
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
EP90125249A
Other languages
German (de)
English (en)
Other versions
EP0437817A1 (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

Links

Images

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.

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)

Claims (4)

  1. Boîtier (1) pour catalyseur comportant une tubulure conique d'amenée des gaz d'échappement (3) et une tubulure conique d'évacuation des gaz d'échappement et une partie médiane sensiblement cylindrique (2) servant à loger les corps (5) de support du catalyseur, qui sont retenus élastiquement du point de vue mécanique et isolés thermiquement par des mats de support élastiques (4), notamment ce qu'on appelle un mat gonflant, caractérisé en ce qu'au moins dans une section partielle, la partie médiane (2) est pourvue de moulures ondulées, présentes sur la totalité ou une partie de la circonférence, et dans lequel les moulures intérieures (8), qui sont cintrées en direction de l'intérieur, sont réunies entre elles par des moulures extérieures (9) cintrées en direction de l'extérieur, et la distance (d) des moulures intérieures (8) est supérieure au double de leur rayon (R1) et est approximativement égale ou inférieure au quadruple de leur rayon (R1). 4R1 > d > 2R1
    Figure imgb0004
  2. Boîtier pour catalyseur selon la revendication 1, caractérisé en ce que la hauteur totale des moulures est inférieure à la différence entre les épaisseurs minimale et maximale admissibles d'installation des mats.
  3. Boîtier pour catalyseur selon la revendication 1 ou 2, caractérisé en ce que le rayon (R1) des moulures intérieures est supérieur à la plus faible épaisseur des mats à l'état inséré.
  4. Boîtier pour catalyseur selon l'une des revendications 1 à 3, caractérisé en ce qu'il est rigidifié, au moins dans la zone des moulures ondulées, par des moulures longitudinales de renforcement, situées de préférence aux angles de profilés non circulaires.
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 EP0437817A1 (fr) 1991-07-24
EP0437817B1 true 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)

Families Citing this family (8)

* 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
FR2703105B1 (fr) * 1993-03-26 1995-06-16 Ecia Equip Composants Ind Auto Dispositif de purification catalytique des gaz d'echappement d'un moteur, notamment de vehicule automobile.
DE19743196A1 (de) * 1997-09-30 1999-04-01 Emitec Emissionstechnologie Katalysatorträgeranordnung
WO1999017006A1 (fr) 1997-09-30 1999-04-08 Emitec Gesellschaft Für Emissionstechnologie Mbh Systeme de corps alveolaire comportant des sections porteuses
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
DE102020129043A1 (de) 2020-11-04 2022-05-05 Mhg Fahrzeugtechnik Gmbh Vorrichtung zur Anströmung eines Abgasreinigungselements

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH448651A (de) * 1965-12-24 1967-12-15 J Kauffmann Eduard Verschalungselement
DE2301646A1 (de) * 1973-01-13 1974-08-01 Pforzheim Metallschlauch Katalysatortopf fuer abgasleitungen
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
US4239733A (en) * 1979-04-16 1980-12-16 General Motors Corporation Catalytic converter having a monolith with support and seal means therefor
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

Also Published As

Publication number Publication date
DE4001419C1 (en) 1991-06-13
DE59000362D1 (de) 1992-11-19
EP0437817A1 (fr) 1991-07-24

Similar Documents

Publication Publication Date Title
EP0799369B1 (fr) Enveloppe a double paroi, en particulier pour les catalyseurs de gaz d'echappement de vehicules
EP0305891B1 (fr) Elément de conduite pour systèmes de gaz d'échappement
EP0437817B1 (fr) Carter de catalyseur
EP0542775A1 (fr) Corps metallique monolithique en nid d'abeilles a nombre variable de canaux.
DE3908887A1 (de) Vorrichtung zur katalytischen entgiftung oder dgl. von verbrennungsmotor-abgasen mit zwei abgas-behandlungskoerpern und einem schutzring dazwischen
DE4313187A1 (de) Metallischer Trägerkörper für Abgasreinigungskatalysator-Material
WO1999064731A1 (fr) Dispositif a corps alveolaire
EP1075609A1 (fr) Structure porteuse presentant un element de deformation avec application de forces oblique
EP1048881B1 (fr) Conduite de produit réfrigérant pour conditionneurs d'air
EP0336115B1 (fr) Catalyseur pour gaz de combustion avec monolithe en métal
DE20305574U1 (de) Flexibles Leitungselement
EP1859132B1 (fr) Boitier d'un composant de traitement des gaz d'echappement dote d'une douille de renforcement
DE19820463A1 (de) Tragstruktur mit einem Deformationselement mit Radialverformungsbegrenzern
EP1559882B1 (fr) Dispositif de purification des gaz d'échappement et procédé de fabrication d'un dispositif de purification des gaz d'échappement
DE29721105U1 (de) Kanalprofil
EP1012455A2 (fr) Convertisseur catalytique pour moteur de faible puissance
EP0969930B1 (fr) Dispositif comprenant un boitier et un corps en nid-d'abeilles a zone de section transversale aplatie
DE3506219A1 (de) Katalytische abgasentgiftungseinrichtung
EP1889709A1 (fr) Elément de ressort
DE3910359A1 (de) Traegerkoerper fuer einen katalytischen reaktor zur abgasreinigung
EP1076780B1 (fr) Structure porteuse presentant un element de deformation avec une longueur a bloc residuelle reduite
DE9210836U1 (de) Vorrichtung zum katalytischen Reinigen der Abgase von Verbrennungsmotoren
DE69814243T2 (de) Flexibles, gewelltes Rohr zum Entkuppeln von Fahrzeugmotorabgasleitungen
DE4218198C2 (de) Katalysator-Gehäuse
DE102014000594B4 (de) Nachgiebigkeitselement

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB IT

17P Request for examination filed

Effective date: 19910827

17Q First examination report despatched

Effective date: 19920227

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

ITF It: translation for a ep patent filed
REF Corresponds to:

Ref document number: 59000362

Country of ref document: DE

Date of ref document: 19921119

ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19930120

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19971023

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19971204

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19971212

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19981221

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19981221

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990831

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19991001

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051221