DE2727967C2 - Method of making a catalyst device - Google Patents

Method of making a catalyst device

Info

Publication number
DE2727967C2
DE2727967C2 DE2727967A DE2727967A DE2727967C2 DE 2727967 C2 DE2727967 C2 DE 2727967C2 DE 2727967 A DE2727967 A DE 2727967A DE 2727967 A DE2727967 A DE 2727967A DE 2727967 C2 DE2727967 C2 DE 2727967C2
Authority
DE
Germany
Prior art keywords
insert
welding
housing
welded
making
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
Application number
DE2727967A
Other languages
German (de)
Other versions
DE2727967A1 (en
Inventor
Rainer Dipl.-Ing. 8070 Ingolstadt 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.)
Audi AG
Original Assignee
Audi NSU Auto Union 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 Audi NSU Auto Union AG filed Critical Audi NSU Auto Union AG
Priority to DE2727967A priority Critical patent/DE2727967C2/en
Priority to CA301,973A priority patent/CA1102706A/en
Priority to CH478378A priority patent/CH636408A5/en
Priority to JP5321978A priority patent/JPS5413462A/en
Priority to SE7805125A priority patent/SE439660B/en
Priority to US05/903,059 priority patent/US4186172A/en
Publication of DE2727967A1 publication Critical patent/DE2727967A1/en
Application granted granted Critical
Publication of DE2727967C2 publication Critical patent/DE2727967C2/en
Expired legal-status Critical Current

Links

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
    • 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
    • F01N3/2842—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration specially adapted for monolithic supports, e.g. of honeycomb type
    • 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
    • F01N2330/04—Methods of manufacturing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

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)
  • Laser Beam Processing (AREA)

Description

2020th

2525th

3535

Die Erfindung betrifft ein Verfahren zum Herstellen einer Katalysatorvorrichtung zum Entgiften der Abgase von Brennkraftmaschinen, insbesondere von Kraftfahrzeugen, gemäß dem Oberbegriff des Patentanspruches 1.The invention relates to a method for producing a catalytic converter device for detoxifying the exhaust gases of internal combustion engines, in particular of motor vehicles, according to the preamble of the patent claim 1.

Durch eine in der DE-OS 23 02 746 beschriebene Katalysatorvorrichtung der vorstehend angesprochenen Gattung mit einem Trägereinsatz aus dünnen, gewickelten Metallfolien ist es bekannt, den Trägereinsatz in sich punktuell oder insgesamt zu verschweißen, um dessen Betriebsfestigkeit insbesondere gegenüber auftretenden Schwingungen und Erschütterungen sicherzustellen. Ferner ist ausgeführt, daß der Trägereinsatz anschließend auch mit dem Gehäuse verschweißt werden kann. Wo und wie diese Schweißungen ausgeführt werden sollen, ist in der DE-OS 23 02 746 allerdings nicht dargestellt.By a catalyst device described in DE-OS 23 02 746 of the type discussed above with a support insert made of thin, wound Metal foils, it is known to weld the carrier insert in itself at certain points or as a whole in order to be able to Ensure operational stability, in particular against vibrations and shocks. It is also stated that the carrier insert is then also welded to the housing can. Where and how these welds are to be carried out, however, is not in DE-OS 23 02 746 shown.

Aufgabe der Erfindung ist es, ein kostengünstiges Verfahren zum Herstellen einer gegen Schwingungen und Stöße dauerfesten Katalysatorvorrichtung zu schaffen. The object of the invention is to provide a cost-effective method for producing an anti-vibration device and to create impacts durable catalytic converter device.

Diese Aufgabe wird erfindungsgemäß mit den kennzeichnenden Merkmalen des Patentanspruches gelöst.This object is achieved according to the invention with the characterizing features of patent claim.

Durch die Anwendung des Strahlsc'iweißens (Elektronen-Laser) ergibt sich eine problemlos durchführbare Schweißverbindung der sehr dünnen Metallfolien. Das stirnseitige Verschweißen ist aufgrund der dabei erforderlichen, relativ wenigen Schweißverbindungen sehr kostengünstig. Dabei hat sich herausgestellt, daß die stirnseitige Verschweißung den im Alltagsbetrieb auftretenden Anforderungen an die Dauerfesiigkeit vollauf genügt. Beschädigungen durch Gasschwingungen sowie Motorvibrationen und im Fahrbetrieb auftretende Stöße werden zuverlässig vermieden. Der Trägereinsatz kann zunächst durch Aneinanderschichten bzw. Zusammenwickeln der Metallfolien hergestellt, in das Gehäuse eingeschoben und anschließend duich einfaches, stirnseitiges Verschweißen haltbar verbunden werden. Durch die Verschweißung des Trägereinsatzes in sich und mit dem Gehäuse in einem einzigen Arbeitsgang ist ein besonders kostengünstiges Verfahren zur Herstellung einer Katalysatorvorrichtung geschaffen.By using beam welding (electron laser) the result is a welded connection of the very thin metal foils that can be carried out without any problems. That Frontal welding is very important because of the relatively few welded connections required inexpensive. It has been found that the welding at the end is the same as that which occurs in everyday operation The requirements for long-term strength are fully sufficient. Damage from gas vibrations as well Engine vibrations and shocks that occur while driving are reliably avoided. The carrier insert can initially be produced by layering or winding the metal foils together The housing is pushed in and then permanently connected by simple, frontal welding will. By welding the carrier insert into itself and with the housing in a single operation a particularly cost-effective method for producing a catalytic converter device is created.

Die Erfindung ist anhand eines Ausführungsbeispieles näher erläutert Die Zeichnung zeigt inThe invention is explained in more detail using an exemplary embodiment

F i g. 1 eine erfindungsgemäße Katalysatorvorrichtung im Längsschnitt,F i g. 1 shows a catalyst device according to the invention in longitudinal section,

F i g. 2 die Katalysatorvorrichtung in der Ansicht X der Fig. 1.F i g. 2 the catalytic converter device in view X of FIG. 1.

Die in Fig. 1. dargestellte Katalysatorvorrichtung 10 setzt sich aus einem zylindrischen Gehäusemantel 11, zwei kegeligen Endstücken 12 mit Flanschen 13 zum Anschluß an eine nicht dargestellte Abgasanlage und einem Trägereinsatz 14 zusammen. In der F i g. 1 ist nur ein Endstück 12 dargestellt, das zweite ist sich spiegelbildlich gleich vorzustellen.The catalyst device 10 shown in Fig. 1 consists of a cylindrical housing jacket 11, two tapered end pieces 12 with flanges 13 for connection to an exhaust system, not shown, and a carrier insert 14 together. In FIG. 1 only one end piece 12 is shown, the second is a mirror image to introduce immediately.

Im Gehäusemantel 11 ist der raonolitis:h; Trägerein satz 14 (F i g. 2) aus zwei in etwa gleich langen, spiralförmig aufgerollten, katalytisch wirksamen Metallfolien 15,16 aufgenommen. Die eine Metallfolie 15 ist sinusförmig ausgebildet (der einfacheren Darstellung wegen ist nur die äußere Windung gezeichnet), so daß sich zwischen den beiden Metallfolien 15, 16 eine Vielzahl von Gasdurchlässen bildetIn the housing jacket 11 is the raonolitis: h; Carrier Set 14 (Fig. 2) of two roughly equally long, spirally rolled up, catalytically active metal foils 15.16 added. One metal foil 15 is sinusoidal (for the sake of simplicity of illustration only the outer turn drawn), so that between the two metal foils 15, 16 a plurality of Forms gas passages

Die Metallfolien 15, 16, deren Stärke nur ca. 5 χ 10-2mm beträgt, sind untereinander durch Anwendung des Laserstrahl-Schweißverfahrens zu einem in sich festen Einsatz 14 verbunden, so daß Schwingungsresonanzen oder relative Verlagerungen der einzelnen Windungen des Einsatzes 14 im Gehäuse vermieden werden.The metal foils 15, 16, whose thickness is only about 5 χ 10- 2 mm, are connected to each other by applying the laser beam welding process to a solid to be insert 14, so that vibration resonances or relative displacements of the individual coils of the insert 14 in the housing be avoided.

Bei der Herstellung der beschriebenen Katalysatorvorrichtung 10 wird der Einsatz 14 nach dem Aufrollen und dem Einschieben in den Gehäusemantel 11 mit seinen Stirnseiten sich mehrfach überkreuzend (gestrichelte Linien 17 der F i g. 2) an einer nicht dargestellten Laserstrahlkanone vorbeigeführt, wobei die hochenergetischen Laserstrahlen die Melallfolien 15, 16 an ihren stirnseitigen Berührungsstellen miteinander und die äußere Windung des Einsatzes 14 mit dem Gehäusemantel 11 verschweißen.In the manufacture of the described catalyst device 10, the insert 14 is rolled up and the insertion into the housing shell 11 with his End faces crossing one another several times (dashed lines 17 in FIG. 2) on one not shown Laser beam cannon passed, with the high-energy laser beams the melallic foils 15, 16 on their frontal contact points with one another and the outer turn of the insert 14 with the housing jacket 11 weld.

Die punktförmige Verschweißung der äußeren Windungen des Einsatzes 14 mit dem Gehäusemantel 11 erfolgt in einem einzigen Arbeitsgang mit der stirnseitigen Verschweißung des Einsatzes, wobei der mit 18 angedeutete Laserstrahl von innerhalb der Längsprojektion des Einsatzes 14 nach außen gerichtet wird.The point-like welding of the outer turns of the insert 14 to the housing jacket 11 takes place in a single operation with the end-face welding of the insert, the one indicated by 18 Laser beam is directed from within the longitudinal projection of the insert 14 to the outside.

Es versteht sich, daß anstelle des Laserstrahlschweißens auch das Elektronenstrahlschweißen angewendet werden kann.It goes without saying that electron beam welding is also used instead of laser beam welding can be.

Hierzu 2 Blatt ZeichnungenFor this purpose 2 sheets of drawings

Claims (1)

Patentanspruch:Claim: Verfahren zum Herstellen einer Kitalysatorvorrichtung zum Entgiften der Abgase von Brennkraftmaschinen, bei dem Metallfolien derart übereinandergeschichtet werden, daß sie einen Gasdurchlässe aufweisenden Trägereinsatz bilden, der in sich verschweißt und mittels Schweißung in einem Gehäuse befestigt wird, dadurch gekennzeichnet, daß der Einsatz (14) an seinen Stirnseiten strahlgeschweißt (z. B. mit Laserstrahl) wird und daß die Schweißverbindungen über die Stirnseite des Einsatzes (14) und zwischen der äußersten Lage des Einsatzes und dem Gehäuse in einem Arbeitsgang hergestellt werden, indem der Schweißstrahl von innerhalb der Längsprojektion des Einsatzes (14) nach außen gerichtet wird.Method of making a kitalyser device for detoxifying the exhaust gases from internal combustion engines, in which metal foils are layered on top of one another be that they form a support insert having gas passages which is welded into itself and is fastened in a housing by means of welding, characterized in that the insert (14) on its end faces is beam-welded (e.g. with a laser beam) and that the welded connections are made over the end face of the insert (14) and between the outermost position of the insert and the housing in one operation can be produced by placing the welding beam from within the longitudinal projection of the insert (14) is directed outwards.
DE2727967A 1977-05-06 1977-06-22 Method of making a catalyst device Expired DE2727967C2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DE2727967A DE2727967C2 (en) 1977-06-22 1977-06-22 Method of making a catalyst device
CA301,973A CA1102706A (en) 1977-05-06 1978-04-25 Monolithic metal catalyst for the detoxication of the exhaust gases of internal combustion engines
CH478378A CH636408A5 (en) 1977-05-06 1978-05-02 MONOLITHIC METAL CATALYST FOR DETOXIFYING EXHAUST GAS FROM ENGINE AND MANUFACTURING.
JP5321978A JPS5413462A (en) 1977-05-06 1978-05-02 Metal catalyst case of unit structure for removing poison from exhaust gas of internal combustion engine and method of making said metal catalyst case
SE7805125A SE439660B (en) 1977-05-06 1978-05-03 PROCEDURE FOR PREPARING A CATALYST BODY INTENDED FOR COMBUSTION ENGINE
US05/903,059 US4186172A (en) 1977-05-06 1978-05-05 Monolithic catalytic muffler having nondeposit welds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2727967A DE2727967C2 (en) 1977-06-22 1977-06-22 Method of making a catalyst device

Publications (2)

Publication Number Publication Date
DE2727967A1 DE2727967A1 (en) 1979-01-18
DE2727967C2 true DE2727967C2 (en) 1983-10-13

Family

ID=6012012

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2727967A Expired DE2727967C2 (en) 1977-05-06 1977-06-22 Method of making a catalyst device

Country Status (1)

Country Link
DE (1) DE2727967C2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0213435A1 (en) * 1985-08-19 1987-03-11 INTERATOM Gesellschaft mit beschränkter Haftung Method for the selective soldering of a metallic catalyst support body, and a catalyst support body obtained by this method

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2924592C2 (en) * 1979-06-19 1983-05-26 Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co KG, 7000 Stuttgart Method for producing a carrier matrix for a catalytic reactor for exhaust gas purification in internal combustion engines of motor vehicles
DE2946685C2 (en) * 1979-11-20 1985-06-20 Degussa Ag, 6000 Frankfurt Process for the production of a composite body which is coated with catalysis-promoting metal oxide and is arranged in a metal jacket
DE3666262D1 (en) * 1985-10-25 1989-11-16 Interatom Method for soldering metallic catalyst support articles
DE3602134A1 (en) * 1986-01-24 1987-07-30 Daimler Benz Ag DEVICE FOR CLEANING ENGINE EXHAUST GASES WITH A METAL MATRIX CATALYST SOLELED IN A HOUSING
ES2010687B3 (en) * 1986-05-12 1989-12-01 Interatom Ges Mit Beschrankter Haftung METALLIC HOLLOW BODY, ESPECIALLY CATALYST CARRYING BODY WITH CARRYING WALL AND PROCEDURE FOR ITS MANUFACTURE.
ATE45781T1 (en) * 1986-05-12 1989-09-15 Interatom HONEYCOMB BODY, IN PARTICULAR CATALYST CARRIER|BODY, WITH METAL SHEET LAYERS INTERLOCKED IN OPPOSITIONS AND PROCESS FOR ITS MANUFACTURE.
DE4112354A1 (en) * 1991-04-16 1992-10-22 Behr Gmbh & Co DEVICE FOR CATALYTIC DETOXING OF EXHAUST GAS
DE4233404C2 (en) * 1992-10-05 1994-08-18 Degussa Monolithic supported metal catalyst with a catalytically coated honeycomb body
EP0820830B1 (en) * 1993-06-07 2003-05-21 Nippon Yakin Kogyo Co., Ltd. Exhaust gas cleaning metal carrier and method of manufacturing the same

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3629546A (en) * 1969-04-02 1971-12-21 American Can Co Air-cooled laser processing of materials
DE2302746A1 (en) * 1973-01-20 1974-07-25 Sueddeutsche Kuehler Behr CARRIER MATRIX FOR A CATALYTIC REACTOR FOR EXHAUST GAS CLEANING IN COMBUSTION MACHINES, ESPEC. GASOLINE ENGINES OF MOTOR VEHICLES AND A MANUFACTURING PROCESS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0213435A1 (en) * 1985-08-19 1987-03-11 INTERATOM Gesellschaft mit beschränkter Haftung Method for the selective soldering of a metallic catalyst support body, and a catalyst support body obtained by this method

Also Published As

Publication number Publication date
DE2727967A1 (en) 1979-01-18

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Legal Events

Date Code Title Description
OD Request for examination
OI Miscellaneous see part 1
8125 Change of the main classification

Ipc: F01N 3/28

D2 Grant after examination
8363 Opposition against the patent
8327 Change in the person/name/address of the patent owner

Owner name: AUDI AG, 8070 INGOLSTADT, DE

8365 Fully valid after opposition proceedings
8380 Miscellaneous part iii

Free format text: PATENTANSPRUCH 1, ZEILE 1 LAUTET RICHTIG: "KATALYSATORVORRICHTUNG" PATENTANSPRUCH 1, ZEILE 17 LAUTET RICHTIG: "GERICHTET" SPALTE 1, ZEILE 45 LAUTET RICHTIG: "STRAHLSCHWEISSEN" SPALTE 2, ZEILE 22 LAUTET RICHTIG: "MONOLITHISCHE"

8320 Willingness to grant licences declared (paragraph 23)
8339 Ceased/non-payment of the annual fee