EP1108123B1 - Procede permettant de fabriquer le boitier d'un convertisseur catalytique par une technique d'enroulement-etirement - Google Patents

Procede permettant de fabriquer le boitier d'un convertisseur catalytique par une technique d'enroulement-etirement Download PDF

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Publication number
EP1108123B1
EP1108123B1 EP99941461A EP99941461A EP1108123B1 EP 1108123 B1 EP1108123 B1 EP 1108123B1 EP 99941461 A EP99941461 A EP 99941461A EP 99941461 A EP99941461 A EP 99941461A EP 1108123 B1 EP1108123 B1 EP 1108123B1
Authority
EP
European Patent Office
Prior art keywords
housing
housing casing
knocking
mat
catalytic converter
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
EP99941461A
Other languages
German (de)
English (en)
Other versions
EP1108123A1 (fr
Inventor
Jörn SCHNIGENBERG
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.)
Volkswagen AG
Original Assignee
Volkswagen 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 Volkswagen AG filed Critical Volkswagen AG
Publication of EP1108123A1 publication Critical patent/EP1108123A1/fr
Application granted granted Critical
Publication of EP1108123B1 publication Critical patent/EP1108123B1/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
    • B01J35/56—Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional monoliths

Definitions

  • the invention relates to a method for producing a catalyst housing according to the preamble of the claim.
  • Catalytic converter housing as used to connect a catalytic converter in exhaust systems from Internal combustion engines, in particular motor vehicles, are used, There are many different designs, with two systems on the market have prevailed.
  • the first system one becomes catalytic effective material coated monolith (in particular ceramic design) with a Inflatable inflatable mat wrapped, which has the task of storing the monolith.
  • This Inflatable mat is used together with the monolith in a sheet metal jacket is also produced by means of a winding process and has the task of Keep monoliths in position together with the inflatable mat.
  • the biased The sheet metal jacket is then tacked at individual points using spot welding
  • inlet and outlet funnels are attached, which correspond to the Requirements (connection of the exhaust pipe) are aligned. It is attached by means of a welded seam on the wound converter. After closing the The finished winding converter is obtained by means of a weld seam.
  • the second system that is established on the market is known as a shell converter from the monolith, a separate mat and two half-shells, namely one Upper and one lower shell, but there is often one in the shell converter lack of process security. Furthermore, it also prepares the bowl shape Fixed geometry often has difficulty adapting to the underbody Motor vehicles.
  • the invention has for its object a method for producing To create catalytic converter housings by means of the winding / tensioning technology with which the Catalyst core, especially a monolith, in a particularly safe and durable manner fixed within the housing shell and thus the durability of the Catalyst can be ensured for its runtime.
  • the method according to the invention is characterized in that the housing jacket then pretensioned with tensioning straps and with one during the pretensioning a setting of the inflatable mat causing direct or indirect tapping with a predetermined knocking frequency of 20 to 80 Hz is applied.
  • the inflatable mat is set when the Housing shell by means of the tensioning straps in a much more effective manner, which ensures an absolutely tight fit of the monolith within the casing entire life of the catalyst is ensured.
  • the inflatable mat is in used the housing jacket that the expansion jacket overlap offset by 180 ° Overlap of the housing shell is arranged This reliably prevents that the two overlaps come to lie on top of each other, causing the pinch the inflatable mat or the casing shell could be impaired.
  • a particularly advantageous embodiment is characterized in that the Clamping force for pretensioning the housing jacket towards the end of the tapping process 10 to 30 kN, in particular 20 kN, is increased.
  • Such a force controlled Tensioning the casing with simultaneous knocking has a special effect effective setting and firm wrapping of the inflatable mat.
  • the housing jacket after the Tensioning tacked using spot welding On the stapled casing funnels are welded on the front using a round seam, the overlap of the housing shell only after welding the funnels with a longitudinal seam is completely welded shut. In this way, the catalyst housing can be opened produce very quickly, accurately and cost-effectively.
  • a housing jacket 1 made of sheet metal can be seen, which consists of a circuit board has been wound like a cylinder so that the ends overlap.
  • the ends of the wound inflatable mat 3 also overlap each other.
  • the monolith 2 wrapped with the expansion mat 3 is then wound into the Housing shell 1 used, as can be seen from Figure 3. This insertion takes place thereby such that the position of the inflatable mat overlap is offset by 180 ° Overlap of the housing shell 1 is.
  • the housing shell 1 and thus the internal inflatable mat 3 is prestressed by means of tensioning straps 4, with tapping a frequency of, for example, 45 Hz for 5 seconds, for example Inflatable mat 3 is ensured.
  • the force at the end of the tapping process be increased up to a height of, for example, 20 kN in order to ensure that the To ensure monoliths 2.
  • the overlaps of the Casing shell 1 and the inflatable mat 3 each offset by 90 ° to the clamping device plane, which is the horizontal plane in FIG. 4, through the center of the monolith 2 and passes through the intersection of the strap 4.
  • the housing shell 1 within the straps 4 that the Overlaps of the housing shell 1 and the inflatable mat 3 in this horizontal Clamping center level, as can be seen from FIG. 5.
  • the catalyst housing prepared in this way is then placed in a welding device inserted and provided with funnels 6 on the end face, as can be seen from FIG. in the subsequent process step, the funnels 6 by means of circular seams 7 to the Welded housing shell 1, which is done for example by means of MAG welding can. Then the tacked overlap of the housing shell 1 by means of a Longitudinal seam 8 completely welded so that the catalytic converter is finished.

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)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Catalysts (AREA)

Abstract

L'invention concerne un procédé qui permet de fabriquer un boîtier de convertisseur catalytique. Le procédé consiste à marteler la chemise (1) du boîtier, préalablement mise sous tension au moyen de bandes de tension (4), à une fréquence prédéterminée, de façon à mettre en place une natte expansée (3).

Claims (8)

  1. Procédé pour la fabrication d'un boítier de convertisseur catalytique, dans lequel un noyau de convertisseur catalytique (2) enveloppé d'un tapis gonflant (3) est entouré d'une enveloppe de boítier (1) ou est introduit dans une enveloppe de boítier (1) pré-enroulée à partir d'une platine, caractérisé en ce que l'enveloppe de boítier (1) est ensuite mise en précontrainte avec des bandes de serrage (4) et est soumise, pendant la mise en précontrainte, à un martèlement direct ou indirect, provoquant un tassement du tapis gonflant (3), avec une fréquence prédéterminée de martèlement de 20 à 80 Hz.
  2. Procédé suivant la revendication 1, caractérisé en ce que la fréquence de martèlement vaut en particulier 40 à 50 Hz.
  3. Procédé suivant l'une quelconque des revendications 1 ou 2, caractérisé en ce que l'opération de martèlement est effectuée pendant 2 à 4 secondes, en particulier pendant 5 secondes.
  4. Procédé suivant l'une quelconque des revendications précédentes, caractérisé en ce que le tapis gonflant (3) est introduit dans l'enveloppe de boítier (1) de telle manière que le recouvrement de l'enveloppe gonflante soit disposé à 180° par rapport au recouvrement de l'enveloppe de boítier (1).
  5. Procédé suivant l'une quelconque des revendications précédentes, caractérisé en ce qu'un effort de serrage pour la mise en précontrainte de l'enveloppe de boítier (1) est augmenté vers la fin de l'opération de martèlement.
  6. Procédé suivant la revendication 5, caractérisé en ce que l'effort de serrage est augmenté jusqu'à 10 à 30 kN, en particulier à 20 kN, vers la fin de l'opération de martèlement.
  7. Procédé suivant l'une quelconque des revendications précédentes, caractérisé en ce que l'enveloppe de boítier (1) est attachée par soudage par points après la mise en précontrainte.
  8. Procédé suivant la revendication 7, caractérisé en ce que des cônes d'extrémité (6) sont soudés sur l'enveloppe de boítier attachée (1) au moyen d'une soudure circulaire (7) et le recouvrement attaché de l'enveloppe de boítier (1) n'est complètement soudé avec une soudure longitudinale (8) qu'après le soudage des cônes (6).
EP99941461A 1998-08-26 1999-07-26 Procede permettant de fabriquer le boitier d'un convertisseur catalytique par une technique d'enroulement-etirement Expired - Lifetime EP1108123B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19838750A DE19838750A1 (de) 1998-08-26 1998-08-26 Verfahren zur Herstellung eines Katalysatorgehäuse mittels Wickel-/Spanntechnik
DE19838750 1998-08-26
PCT/EP1999/005320 WO2000012878A1 (fr) 1998-08-26 1999-07-26 Procede permettant de fabriquer le boitier d'un convertisseur catalytique par une technique d'enroulement-etirement

Publications (2)

Publication Number Publication Date
EP1108123A1 EP1108123A1 (fr) 2001-06-20
EP1108123B1 true EP1108123B1 (fr) 2002-10-09

Family

ID=7878752

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99941461A Expired - Lifetime EP1108123B1 (fr) 1998-08-26 1999-07-26 Procede permettant de fabriquer le boitier d'un convertisseur catalytique par une technique d'enroulement-etirement

Country Status (9)

Country Link
US (1) US6902710B2 (fr)
EP (1) EP1108123B1 (fr)
JP (1) JP4430825B2 (fr)
CN (1) CN1127613C (fr)
BR (1) BR9913229A (fr)
DE (2) DE19838750A1 (fr)
ES (1) ES2184497T3 (fr)
PL (1) PL196779B1 (fr)
WO (1) WO2000012878A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10018805A1 (de) 2000-04-15 2001-11-29 Volkswagen Ag Verfahren und Vorrichtung zur Herstellung eines Katalysators mit einem einen polygonen Querschnitt aufweisenden Monolithen
JP4652554B2 (ja) * 2000-11-10 2011-03-16 イビデン株式会社 触媒コンバータ及びその製造方法
DE10131466B4 (de) * 2001-06-29 2006-09-21 Thyssenkrupp Steel Ag Mantelförmiges Mittelteil eines Katalysatorgehäuses
DE10247582A1 (de) 2002-10-11 2004-04-29 Volkswagen Ag Verfahren zur Herstellung eines Katalysatorgehäuses
DE102005010267A1 (de) * 2005-03-07 2006-09-14 Arvinmeritor Emissions Technologies Gmbh Verfahren zum Herstellen einer abgasführenden Vorrichtung, insbesondere einer Fahrzeugabgasreinigungsvorrichtung
DE102005023169B4 (de) * 2005-05-19 2007-05-16 Benteler Automobiltechnik Gmbh Abgasreinigungsvorrichtung
DE102009030632C5 (de) * 2009-06-25 2014-12-31 Benteler Automobiltechnik Gmbh Verfahren und Vorrichtung zur Herstellung eines Katalysators
DE102011016170A1 (de) 2011-04-05 2012-10-11 Faurecia Emissions Control Technologies, Germany Gmbh Abgas führende Vorrichtung und Verfahren zu ihrer Herstellung
US9790836B2 (en) 2012-11-20 2017-10-17 Tenneco Automotive Operating Company, Inc. Loose-fill insulation exhaust gas treatment device and methods of manufacturing
JP6043183B2 (ja) * 2012-12-27 2016-12-14 日本碍子株式会社 熱交換部材

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69013974T2 (de) * 1989-05-18 1995-04-13 Nippon Pillar Packing Wärmebeständiges Ausdehnungselement.
GB9011849D0 (en) * 1990-05-26 1990-07-18 Fibre Tech Ltd Catalytic converters
US5882608A (en) * 1996-06-18 1999-03-16 Minnesota Mining And Manufacturing Company Hybrid mounting system for pollution control devices
EP0818615B1 (fr) * 1996-07-10 2011-09-28 Volkswagen Aktiengesellschaft Boîtier de catalyseur
EP0837229B1 (fr) * 1996-10-15 2002-04-24 Corning Incorporated Procédé de fabrication d'un pot catalytique pour un moteur à combustion interne
US6405437B1 (en) * 1997-09-17 2002-06-18 Arvinmeritor, Inc. Apparatus and method for encasing an object in a case

Also Published As

Publication number Publication date
PL345489A1 (en) 2001-12-17
BR9913229A (pt) 2001-07-17
JP4430825B2 (ja) 2010-03-10
PL196779B1 (pl) 2008-01-31
DE19838750A1 (de) 2000-03-02
US20010055551A1 (en) 2001-12-27
ES2184497T3 (es) 2003-04-01
CN1127613C (zh) 2003-11-12
WO2000012878A1 (fr) 2000-03-09
EP1108123A1 (fr) 2001-06-20
US6902710B2 (en) 2005-06-07
DE59903055D1 (de) 2002-11-14
CN1313930A (zh) 2001-09-19
JP2002523236A (ja) 2002-07-30

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