EP1074703A1 - Procédé de préparation d'un catalyseur, notamment préfabrication d'une enveloppe ou d'un tube d'un catalyseur à construction modulaire et un tube préfabriqué ainsi préparé - Google Patents

Procédé de préparation d'un catalyseur, notamment préfabrication d'une enveloppe ou d'un tube d'un catalyseur à construction modulaire et un tube préfabriqué ainsi préparé Download PDF

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Publication number
EP1074703A1
EP1074703A1 EP00116381A EP00116381A EP1074703A1 EP 1074703 A1 EP1074703 A1 EP 1074703A1 EP 00116381 A EP00116381 A EP 00116381A EP 00116381 A EP00116381 A EP 00116381A EP 1074703 A1 EP1074703 A1 EP 1074703A1
Authority
EP
European Patent Office
Prior art keywords
tube
jacket
monolith
pipe
bearing
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.)
Withdrawn
Application number
EP00116381A
Other languages
German (de)
English (en)
Inventor
Gerhard Ruffing
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.)
Eberspaecher Climate Control Systems GmbH and Co KG
Original Assignee
J Eberspaecher GmbH and Co KG
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
Priority claimed from DE19945350A external-priority patent/DE19945350A1/de
Application filed by J Eberspaecher GmbH and Co KG filed Critical J Eberspaecher GmbH and Co KG
Publication of EP1074703A1 publication Critical patent/EP1074703A1/fr
Withdrawn legal-status Critical Current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
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/02—Fitting monolithic blocks into the 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
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/22—Methods or apparatus for fitting, inserting or repairing different elements by welding or brazing
    • 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 exhaust gas passages, pipes or tubes
    • F01N2470/06—Tubes being formed by assembly of stamped or otherwise deformed sheet-metal

Definitions

  • the invention relates to a method for producing a Catalyst, in particular a center piece of a motor vehicle catalytic converter in modular design, by insertion at least one monolith and a surrounding bearing jacket in a manufactured tube, which in cross section essentially has the monolith profile plus allowance for the bearing jacket, an adjustment of the tube housing dimension to one constant bearing gap to the monolith.
  • the invention relates also a pipe manufactured according to this.
  • the aforementioned one-piece tube is preferably in winding technology made with a longitudinal weld.
  • the prefabricated welded tube is then axially the monolith Swell mat inserted.
  • a bearing gap realized in this way Inclusion of the swelling mat between the monolith and the housing or
  • the jacket or tube has a constant cross section only to a limited extent and only allows bearing gaps of limited accuracy.
  • the object of the invention is to create an aforementioned Process for the preparation of a catalyst, in particular a pipe center piece of a motor vehicle catalytic converter in modular design, after which a particularly simple structurally simple pipe with narrow bearing gap tolerances is.
  • the essence of the invention is that the oval in cross section or polygonal tube made from two preferably identical tubular molded parts prefabricated and the pipe fittings after insertion of the monolith together with the bearing jacket to form a closed round oval or polygonal tube assembled and then after Adjustment of the constant bearing gap longitudinally welded on both sides become.
  • each molded pipe part with a offset longitudinal edge is prefabricated, which is a movable Recording for the not offset longitudinal edge of the other pipe molding.
  • Each molded pipe part can be manufactured separately using winding technology or be bent.
  • the area of overlap of the longitudinal edges is in particular as Fit fit, which before welding the Longitudinal edges is a sliding seat through which the bearing gap between the monolith and the jacket or tube can.
  • the two assembled pipe fittings have and no significant internal stresses after welding that trigger a restoring force and the bearing gap accuracy could affect.
  • bearing gaps in the range of Realize 3.8 ⁇ 0.6mm.
  • the invention is suitable for all preferably axially symmetrical Modular cat bodies, in which a depending on the monolith size adjustable source mat gap is required, however also for non-axisymmetric, preferably in cross section polygonal modular cat body.
  • a process for producing a catalyst in particular a centerpiece of a motor vehicle catalytic converter in modular design, by introducing at least one Monoliths and a surrounding bearing jacket in one Tube, which in cross section essentially the monolith profile plus allowance for the bearing jacket, where an adjustment of the tube housing dimension to a constant Storage gap to the monolith takes place, the adjustment of one Tube 1 with a round, oval or polygonal tube cross section through two pre-made identical or different Pipe fittings 2, 3 causes that with respect to each other have a double sliding seat before welding.
  • the pipe fittings 2, 3 are after introducing the monolith together with the bearing jacket to form a closed round, oval or polygon tube 1 assembled and then after adjustment of the constant bearing gap, longitudinally welded on both sides.
  • the double sliding seat is set up in that each Pipe molding 2 or 3 with a stepped longitudinal edge 4 or 5 is prefabricated, which is a movable recording for the non-offset longitudinal edge 6 or 7 of the other Pipe molding forms.
  • Each pipe fitting 2 or 3 can be wound separately are manufactured or bent.
  • FIG. 1 a (not shown in detail) Motor vehicle catalytic converter in modular design with a jacket or Pipe and absorbed monolith and bearing jacket, in particular Swelling mat, a cross-sectionally oval tube 1, which composed of two identical pipe fittings 2, 3 and has two longitudinal edges welded together, whereby each molded pipe part 2 or 3 a radially outward offset Has longitudinal edge 4 or 5, the composite Condition of the two pipe fittings, the longitudinal edge not offset 6 or 7 of the other pipe molding overlaps.
  • the area of overlap of the longitudinal edges is a snug fit formed before welding the longitudinal edges together is the above-mentioned sliding seat, through which the bearing gap between the monolith and the jacket or tube 1 can be adjusted so that there is a bearing gap of 3.8 ⁇ 0.6mm results.
  • the two pipe fittings 2 and 3 of the oval shown Pipe 1 have flat jacket surface sections of different lengths open and form dividing lines in the assembled state at different heights.
  • the two dividing lines can also be the same Height can be arranged, as is the case for example with a round one pipe according to the invention (not illustrated) likewise with the double sliding seat in the parting plane.
  • Tube 1 includes two identical pipe fittings 2, 3, are the Pipes 1 according to Figures 2, 3 and 4 from different Pipe fittings 2, 3 assembled and otherwise with the same offset longitudinal edges as shown in Figure 1 and longitudinally welded in the same way. Again there are overlap areas set up at the longitudinal edges that before welding are basically sliding seats, even if the longitudinal edges are at least partially slightly curved. Also according to these variants, the source mat column can be horizontal as in a vertical direction with the aforementioned Accuracy can be set.
  • Figure 2 shows in particular a so-called triangular cat Cross section
  • Figure 3 shows a catalyst in drop form
  • Figure 4 shows a catalyst in potato form.
  • the invention should not be confused with the so-called Half-shell technology, i.e. Manufacture of a closed pipe from two half-shells with radial longitudinal rims in the parting plane, which may still have been turned over. Such radial longitudinal rims just do not allow that double sliding seat according to the invention before welding. A fine adjustment of the bearing gap takes place at the known half-shell technology does not take place. The scope of the pipe is already defined before welding. A change of the pipe diameter can then at most Calibration are accomplished, one compared to the invention much more complex adjustment process.

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)
EP00116381A 1999-08-04 2000-07-28 Procédé de préparation d'un catalyseur, notamment préfabrication d'une enveloppe ou d'un tube d'un catalyseur à construction modulaire et un tube préfabriqué ainsi préparé Withdrawn EP1074703A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19936814 1999-08-04
DE19936814 1999-08-04
DE19945350A DE19945350A1 (de) 1999-08-04 1999-09-22 Verfahren zur Herstellung eines Katalysators, insbesondere Vorfertigung eines Katalysatormantels bzw. -rohrs in Modulbauweise sowie hiernach gefertigtes Rohr
DE19945350 1999-09-22

Publications (1)

Publication Number Publication Date
EP1074703A1 true EP1074703A1 (fr) 2001-02-07

Family

ID=26054490

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00116381A Withdrawn EP1074703A1 (fr) 1999-08-04 2000-07-28 Procédé de préparation d'un catalyseur, notamment préfabrication d'une enveloppe ou d'un tube d'un catalyseur à construction modulaire et un tube préfabriqué ainsi préparé

Country Status (1)

Country Link
EP (1) EP1074703A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101175906B (zh) * 2005-05-17 2010-08-25 日产柴油机车工业株式会社 发动机的废气净化装置
DE102009053028B4 (de) 2009-11-12 2014-08-21 Friedrich Boysen Gmbh & Co. Kg Verfahren und Baukastensystem zur Herstellung von Kanälen
CN105121053A (zh) * 2013-04-03 2015-12-02 三惠技研工业株式会社 消音器及其制造方法
WO2016166022A1 (fr) 2015-04-15 2016-10-20 Tenneco Gmbh Tuyau de gaz d'échappement coudé

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2047557A (en) * 1979-03-29 1980-12-03 Ti Cheswick Silencers Ltd Catalyst assembly for exhaust systems
US4322388A (en) * 1979-11-26 1982-03-30 Arvin Industries, Inc. Catalytic converter assembly
EP0278455A2 (fr) * 1987-02-10 1988-08-17 Paul Gillet Gmbh Carter pour l'incorporation d'un corps céramique monolithique
US4925634A (en) * 1983-05-13 1990-05-15 Sankei Giken Kogyo Kabushiki Kaisha Catalytic converter for use with internal combustion engine
DE4433974C1 (de) 1994-09-23 1996-03-28 Eberspaecher J Verfahren zur Herstellung von Katalysatoren

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2047557A (en) * 1979-03-29 1980-12-03 Ti Cheswick Silencers Ltd Catalyst assembly for exhaust systems
US4322388A (en) * 1979-11-26 1982-03-30 Arvin Industries, Inc. Catalytic converter assembly
US4925634A (en) * 1983-05-13 1990-05-15 Sankei Giken Kogyo Kabushiki Kaisha Catalytic converter for use with internal combustion engine
EP0278455A2 (fr) * 1987-02-10 1988-08-17 Paul Gillet Gmbh Carter pour l'incorporation d'un corps céramique monolithique
DE4433974C1 (de) 1994-09-23 1996-03-28 Eberspaecher J Verfahren zur Herstellung von Katalysatoren

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101175906B (zh) * 2005-05-17 2010-08-25 日产柴油机车工业株式会社 发动机的废气净化装置
DE102009053028B4 (de) 2009-11-12 2014-08-21 Friedrich Boysen Gmbh & Co. Kg Verfahren und Baukastensystem zur Herstellung von Kanälen
CN105121053A (zh) * 2013-04-03 2015-12-02 三惠技研工业株式会社 消音器及其制造方法
WO2016166022A1 (fr) 2015-04-15 2016-10-20 Tenneco Gmbh Tuyau de gaz d'échappement coudé
DE102015105749A1 (de) * 2015-04-15 2016-10-20 Tenneco Gmbh Abgasrohrbogen

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