EP0336002A1 - Treillis métallique tricoté et son procédé de fabrication et dispositif pour l'exécution du procédé - Google Patents

Treillis métallique tricoté et son procédé de fabrication et dispositif pour l'exécution du procédé Download PDF

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Publication number
EP0336002A1
EP0336002A1 EP88105906A EP88105906A EP0336002A1 EP 0336002 A1 EP0336002 A1 EP 0336002A1 EP 88105906 A EP88105906 A EP 88105906A EP 88105906 A EP88105906 A EP 88105906A EP 0336002 A1 EP0336002 A1 EP 0336002A1
Authority
EP
European Patent Office
Prior art keywords
wire mesh
monolith
mandrel
axial direction
wire
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
EP88105906A
Other languages
German (de)
English (en)
Other versions
EP0336002B1 (fr
Inventor
Walter Dipl.-Ing. Seeger
Rüdiger Dipl.-Ing. Mussler
Reinhard Häfelein
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.)
Roth Technik GmbH
Original Assignee
Roth Technik GmbH
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Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6351411&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0336002(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Roth Technik GmbH filed Critical Roth Technik GmbH
Priority to AT88105906T priority Critical patent/ATE77677T1/de
Publication of EP0336002A1 publication Critical patent/EP0336002A1/fr
Application granted granted Critical
Publication of EP0336002B1 publication Critical patent/EP0336002B1/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
    • 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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features
    • F01N13/009—Exhaust or silencing apparatus characterised by constructional features having two or more separate purifying devices arranged in series
    • F01N13/0097—Exhaust or silencing apparatus characterised by constructional features having two or more separate purifying devices arranged in series the purifying devices are arranged in a single 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
    • 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
    • F01N3/2867—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 placed at the front or end face of catalyst body
    • 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
    • F01N2350/02—Fitting ceramic monoliths in a metallic housing
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49398—Muffler, manifold or exhaust pipe making
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49801—Shaping fiber or fibered material
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49813—Shaping mating parts for reassembly in different positions

Definitions

  • the invention relates to a wire thread and a method for its production as well as a device for carrying out the method.
  • Catalytic coated, preferably cylindrical, ceramic monoliths are used for the exhaust gas detoxification of internal combustion engines. These monoliths are firmly stored in a housing, with the interposition of a wire mesh. In the known methods, the monolith is first provided with the wire mesh, then these two parts are inserted loosely into the two-part housing and the latter is pressed when it is closed. Attempts were initially made to stop the axial movement of the monolith resulting from the pulsating exhaust gas flow by means of radial forces in the form of pressed-in beads, but this has not proven successful. Excessively high pressures applied during manufacture involve the risk of damaging the ceramic monolith. If the pressures are too low, there is a risk of insufficient holding force.
  • a disadvantage of the catalysts produced by the known processes are the forces acting on the monolith, both during pressing in and during operation, so that the monolith does not come into contact with the housing due to the pulsating gas flow, such as occurs with exhaust gases from internal combustion engines is damaged.
  • the multiple wrapping of the monolith has the disadvantage that a high surface pressure occurs at the edge of the monolith due to the many layers and can therefore be damaged.
  • the invention is based on the object of proposing a wire mesh, a method for its production and a device for carrying out the method, with which a maximum degree of safety can be achieved for the monolith in the production of the catalyst and in its operation.
  • the flat, multiple wire-knitted wire knit preferably in the form of a tube, which is provided with oblique embossments, is wound onto a surface adapted to the jacket of the monolith, preferably a mandrel that corresponds in shape and dimension to the monolith .
  • the pre-tension between the monolith and the metal housing can be adjusted with the depth or the height of the impressions.
  • the wire mesh can also be wound directly onto the monolith and pressed there in the longitudinal direction, if an abutment that can be removed afterwards is only placed on the edges of the end faces when pressing, in order to absorb the pressing forces, so that damage to the monolith is not is to be feared.
  • the knitted wire is provided with impressions running at an acute angle to the circumferential winding direction before the winding, these cause a certain axial after the pressing Compress so that, despite the abutment, the compressed bead comes to rest against the face of the monolith.
  • the surface has a circumferential projection along the edges of its end face, which is correspondingly formed as an indentation on the bead to be pressed, there is the additional advantage that the particularly sensitive edges of the ceramic monolith do not lie directly against the wire mesh , but lie in the indentation created by the projection.
  • Fig. 1 the device is shown. It has a mandrel 10, the surface and surface of which form the surface 11 corresponds to the monolith 20 (FIGS. 3 and 4).
  • the wire mesh 21 is preferably unwound twice in the circumferential direction on the surface 11 of the mandrel 10.
  • the width of the knitted fabric is dimensioned such that there is an overhang 18 for the knitted wire mesh 21.
  • the mandrel is located in two axially open mold jaws 12, 13 which are movable towards one another and radially surround the mandrel with play. Through the two axial openings of the mold jaws 12, 13, sliding sleeves 14 penetrate as actual pressing tools, which are axially displaceable.
  • the mandrel 10 has two terminal fixed first shoulders 15 of smaller diameter in the region of the protrusion 18 of the wire mesh over the surface 11 of the mandrel 10.
  • the first paragraph 15 has a further second paragraph 16 with the smaller diameter than a guide for the sliding sleeve 14.
  • the actual projecting pressed parts of the sliding sleeve 14 lie on the surface of the shoulder 15 and have a projecting shoulder 14a on their front side which is at a distance from the annular end face 19 in the end position.
  • the shaping jaws 12, 13 also have an annular space 25 of larger diameter located in the area of the surface 11 of the mandrel 10, so that the knitted wire 21 is not compressed too much in this area when the shaping jaws 12, 13 are closed in the direction of arrow A (FIG. 2).
  • This annular space 25 is adjoined by a circumferential clamping projection 26 for holding the wire mesh 21 while the excess 18 is pressed together when the sliding sleeves 14 move together according to the direction arrow B.
  • the circumferential clamping projection 26 has an undercut 27 in the region of the - circumferential - edges 28 the surface 11 with the annular end face 19. The undercut 27 merges into an area 29 of the pressing tools 12, 13 with a smaller diameter than the area of the annular space 25.
  • This device produces a dimensionally stable wire knit (FIG. 3) with a bead 24 (FIG. 3), which can jump over the circumferential edge of each end face of the monolith 20 somewhat radially inward when it is pushed over the monolith, as in FIG Fig. 3 is shown.
  • the components prefabricated in this way are then inserted into the two-part housing 23 (FIG. 4) and, when they are connected, are permanently and reliably prevented from being damaged as a result of axial displacements of the monolith 20 in the pulsating gas stream.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP88105906A 1988-04-05 1988-04-13 Treillis métallique tricoté et son procédé de fabrication et dispositif pour l'exécution du procédé Expired - Lifetime EP0336002B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88105906T ATE77677T1 (de) 1988-04-05 1988-04-13 Drahtgestrick sowie verfahren zu dessen herstellung und vorrichtung zur durchfuehrung des verfahrens.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3811411 1988-04-05
DE3811411 1988-04-05

Publications (2)

Publication Number Publication Date
EP0336002A1 true EP0336002A1 (fr) 1989-10-11
EP0336002B1 EP0336002B1 (fr) 1992-06-24

Family

ID=6351411

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88105906A Expired - Lifetime EP0336002B1 (fr) 1988-04-05 1988-04-13 Treillis métallique tricoté et son procédé de fabrication et dispositif pour l'exécution du procédé

Country Status (5)

Country Link
US (1) US5018272A (fr)
EP (1) EP0336002B1 (fr)
AT (1) ATE77677T1 (fr)
DE (1) DE3872381D1 (fr)
ES (1) ES2033359T3 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4416055A1 (de) * 1994-05-02 1995-11-09 Leistritz Abgastech Verfahren zur Herstellung von Abgaskatalysatoren, insbesondere für Kraftfahrzeuge
US6922891B1 (en) 2000-10-30 2005-08-02 Robert J. Marino, Jr. Method of manufacturing a catalytic converter
DE102007062661A1 (de) * 2007-12-24 2009-06-25 J. Eberspächer GmbH & Co. KG Abgassammler
DE102007062659A1 (de) * 2007-12-24 2009-06-25 J. Eberspächer GmbH & Co. KG Abgassammler und zugehöriges Herstellungsverfahren

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2400443A1 (de) * 1974-01-05 1975-07-10 Erhardt Bischoff Fabrik Fuer K Vorrichtung zum reinigen der abgase von brennkraftmaschinen
US4158037A (en) * 1977-05-16 1979-06-12 Chuo Hatsujo Kabushiki Kaisha Exhaust gas purifier for internal combustion engine
WO1981000738A1 (fr) * 1979-09-01 1981-03-19 Zeuna Staerker Kg Dispositif pour l'epuration catalytique des gaz d'echappement d'un moteur a combustion
DE3519965A1 (de) * 1985-06-04 1986-12-04 Fa. J. Eberspächer, 7300 Esslingen Anordnung zur halterung eines in einem gasdurchstroemten gehaeuse angeordneten koerpers
GB2181966A (en) * 1985-08-23 1987-05-07 Honda Motor Co Ltd Assembly of an annular part to a column
EP0250384A1 (fr) * 1986-06-16 1987-12-23 Sandvik Aktiebolag Dispositif de purification de gaz d'échappement

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3303806A (en) * 1965-05-17 1967-02-14 Plastic Can Corp Method for making metallic containers
GB1453439A (en) * 1973-01-13 1976-10-20 Ti Silencer Services Ltd Catalytic reactor for exhaust emission control
US3955643A (en) * 1974-07-03 1976-05-11 Brunswick Corporation Free flow sound attenuating device and method of making
JPS5817335B2 (ja) * 1975-04-10 1983-04-06 トヨタ自動車株式会社 排気ガス浄化用の一体型触媒コンポ−ネントの製造方法
JPS5739054A (en) * 1980-08-20 1982-03-04 Musashi Seimitsu Kogyo Kk Forging method for forming tooth form on outer circumference of ring-shaped blank
JPS58179529A (ja) * 1982-04-14 1983-10-20 Teruyuki Watanabe 断面ｈ形筒体の鍛造方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2400443A1 (de) * 1974-01-05 1975-07-10 Erhardt Bischoff Fabrik Fuer K Vorrichtung zum reinigen der abgase von brennkraftmaschinen
US4158037A (en) * 1977-05-16 1979-06-12 Chuo Hatsujo Kabushiki Kaisha Exhaust gas purifier for internal combustion engine
WO1981000738A1 (fr) * 1979-09-01 1981-03-19 Zeuna Staerker Kg Dispositif pour l'epuration catalytique des gaz d'echappement d'un moteur a combustion
DE3519965A1 (de) * 1985-06-04 1986-12-04 Fa. J. Eberspächer, 7300 Esslingen Anordnung zur halterung eines in einem gasdurchstroemten gehaeuse angeordneten koerpers
GB2181966A (en) * 1985-08-23 1987-05-07 Honda Motor Co Ltd Assembly of an annular part to a column
EP0250384A1 (fr) * 1986-06-16 1987-12-23 Sandvik Aktiebolag Dispositif de purification de gaz d'échappement

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Band 6, Nr. 39 (M-116)[917], 10. März 1982; & JP-A-56 154 115 (CHUO HATSUJIYOU K.K.) 28-11-1981 *

Also Published As

Publication number Publication date
ES2033359T3 (es) 1993-03-16
US5018272A (en) 1991-05-28
ATE77677T1 (de) 1992-07-15
DE3872381D1 (de) 1992-07-30
EP0336002B1 (fr) 1992-06-24

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