EP1722081A1 - Méthode de fabrication d'un appareil de purification des gaz d'échappement - Google Patents

Méthode de fabrication d'un appareil de purification des gaz d'échappement Download PDF

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Publication number
EP1722081A1
EP1722081A1 EP06111420A EP06111420A EP1722081A1 EP 1722081 A1 EP1722081 A1 EP 1722081A1 EP 06111420 A EP06111420 A EP 06111420A EP 06111420 A EP06111420 A EP 06111420A EP 1722081 A1 EP1722081 A1 EP 1722081A1
Authority
EP
European Patent Office
Prior art keywords
section
cross
funnel
exhaust gas
housing shell
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Withdrawn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
EP06111420A
Other languages
German (de)
English (en)
Inventor
Markus Kontz
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
Application filed by J Eberspaecher GmbH and Co KG filed Critical J Eberspaecher GmbH and Co KG
Publication of EP1722081A1 publication Critical patent/EP1722081A1/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Withdrawn legal-status Critical Current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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
    • F01N13/1844—Mechanical joints
    • F01N13/185—Mechanical joints the connection being realised by deforming housing, tube, baffle, plate, or parts thereof
    • 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
    • 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
    • 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
    • F01N2450/20—Methods or apparatus for fitting, inserting or repairing different elements by mechanical joints, e.g. by deforming housing, tube, baffle plate or parts thereof
    • 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
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/0211—Arrangements for mounting filtering elements in housing, e.g. with means for compensating thermal expansion or vibration
    • 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
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/022—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
    • F01N3/0222—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous the structure being monolithic, e.g. honeycombs
    • 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
    • F01N3/2825—Ceramics
    • F01N3/2828—Ceramic multi-channel monoliths, e.g. honeycombs
    • 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

Definitions

  • the present invention relates to a method for producing an exhaust gas treatment device for an internal combustion engine, in particular of a motor vehicle.
  • the invention also relates to an exhaust gas treatment device produced by the method.
  • Exhaust treatment devices such as catalysts and particulate filters, for example, have a cylindrical housing shell in which at least one exhaust treatment insert is arranged and which is provided at least at one axial end with a funnel.
  • the respective exhaust treatment insert which in particular comprises a particulate filter element or a catalyst element in the housing shell open on both sides, wherein the housing shell inside has an output cross section which is larger than an outer cross section of the exhaust gas treatment insert.
  • the housing jacket can be subjected to a reduction in cross-section, which may be necessary leads that the housing shell then has along its entire length inside an end cross section which is the same size as the outer cross section of the exhaust treatment insert.
  • a bearing mat of the exhaust gas treatment insert which circumferentially encloses an insert body (particle filter element or catalyst element) of the exhaust gas treatment insert, can be compressed in order to achieve a desired prestressing.
  • a funnel can be selected according to the resulting by the cross-sectional reduction inner end cross section of the housing shell whose outer cross section comes as close to said end cross-section, but must be smaller than the end cross-section in order to insert the funnel easily into the respective end region of the housing shell can , Subsequently, the funnel, in particular with a peripheral weld, gas-tight attached to the housing jacket.
  • the present invention addresses the problem of specifying an improved embodiment for a production method of the type mentioned at the outset or for an exhaust gas treatment device produced by this method, which is characterized in particular by reduced production costs.
  • the invention is based on the general idea of inserting the respective funnel into the housing shell at the end before the reduction in cross-section and carrying out the reduction of the cross-section so that in the end region into which the respective funnel is inserted, the inner cross-section of the housing jacket except for the outer cross-section of the funnel is reduced.
  • the respective funnel is arranged quasi gap-free in the housing shell after the cross-sectional reduction in the radial direction, whereby the attachment of the funnel to the housing shell can be realized particularly simple and in particular automated.
  • a measurement of the inner cross section of the housing shell after the omitted Calibration process, as well as selecting a suitable funnel are also.
  • no different funnels need to be stored. The resulting cost advantages are obvious.
  • the cross-sectional reduction can also be carried out in such a way that the housing shell then has a first inner end cross section in the area of the at least one exhaust gas treatment insert and has a second inner end cross section in a region of the respective funnel that is smaller or larger than the first inner end cross section end cross-section.
  • the cross-section reduction in different axial sections of the housing shell can be different.
  • the dimensioning of the funnels can be selected independently of the dimensioning of the exhaust treatment inserts.
  • a standard hopper may be used for various exhaust treatment devices that differ from one another through different exhaust treatment inserts.
  • an exhaust gas treatment device 1 ' (initial state according to FIG. 1) or 1 (final state according to FIG. 2) is assembled from a housing shell 2, at least one exhaust gas treatment insert 3 and at least one funnel 4.
  • the exhaust gas treatment insert 3 expediently comprises an insert body 5 and a bearing mat 6 which surrounds the insert body 5 circumferentially.
  • the insert body 5 may be, for example, a catalyst element or a particle filter element.
  • the exhaust treatment device 1 is preferably around a particulate filter or a catalyst.
  • the exhaust treatment device 1 is used for installation in an exhaust system of an internal combustion engine, which is preferably arranged in a motor vehicle.
  • the housing shell 2 is a tubular or cylindrical hollow body which is open at least on one side and preferably consists of a metal sheet.
  • the housing shell 2 inside an output cross-section 7, which preferably at least constant in at least one axial end portion 8, which includes the one open side of the housing shell 2, and in a receiving area 9, in which at least an exhaust gas treatment insert 3 is arranged in the housing jacket 2 after completion of the exhaust gas treatment device 1.
  • the insert body 5 may be a voltage-sensitive component. Preferably ceramic materials are used here. Typically, the insert body 5 is a ceramic monolith.
  • the bearing mat 6 is a conventional temperature-resistant bearing material, such as a fiber mat.
  • the insert body 5 wrapped with the bearing mat 6 forms the exhaust gas treatment insert 3 and has an outer cross-section 10 in the initial state shown in Fig. 1.
  • the funnel 4 is preferably again a sheet metal part.
  • the hopper 4 has an outer cross section 11, which may be basically selected independently of the outer cross section 10 of the exhaust treatment insert 3. Preferably, however, the outer funnel cross-section 1 is - as here - smaller than the outer exhaust treatment insert cross section 10.
  • the exhaust gas treatment insert 3 are introduced axially into the housing shell 2 into the receiving area 9 and the funnel 4 in the end region 8.
  • the inner output cross section 7 of the housing shell 2 is dimensioned larger than the outer cross sections 10, 11 of the exhaust gas treatment insert 3 and the funnel 4.
  • a calibration process is performed, in which the housing shell 2 is subjected to a cross-sectional reduction.
  • This cross-sectional reduction can be done for example by rolling the housing shell 2 about its longitudinal axis 12 or longitudinal central axis, wherein at the same time a radial pressure load is performed.
  • the housing shell 2 can be reduced in terms of its inner and outer cross sections.
  • it is possible to realize the cross-sectional reduction by radially pressing the housing shell 2, wherein circumferentially distributed arranged pressure segments on the housing shell 2 attack and compressing it radially. Basically, other forming processes possible to realize the desired cross-sectional reduction.
  • Fig. 2 shows a state after the cross-section reduction.
  • the cross-sectional reduction in the method according to the invention is specifically carried out in such a way that the housing jacket 2 subsequently has a first end cross section 13 in the receiving region 9, in which the respective exhaust gas treatment insert 3 is located, which is now the same size as the outer cross section 10 of FIG
  • the cross-sectional reduction of the housing shell 2 targeted so also that the housing shell 2 thereafter in the end region 8, in which the funnel 4 is located inside a second end section 14 which is the same size as the outer cross section 11 of the funnel 4.
  • the funnel 4 in the end state shown in Fig. 2 in the radial direction without gaps axially inserted into the end portion 8 of the housing shell 2.
  • the cross-sectional reduction of the housing shell 2 takes place in the end region 8 in a targeted manner so that there is then a circumferential radial and planar contact between the housing shell 2 and the funnel 4.
  • the funnel 4 can be fixed to the housing jacket 2, for example, by means of a circumferentially closed circumferential weld 15. It is also possible to solder the funnel 4 to the housing shell 2.
  • the calibration process with cross-sectional reduction in the receiving area 9 is required in order to fix the exhaust gas treatment insert 3 sufficiently securely in the housing shell 2. Since the insert bodies 5 and / or the bearing mats 6 have relatively large dimensional tolerances due to their production, the inner output cross section 7 of the housing shell 2 can be significantly larger than the outer cross section 10 of the exhaust gas treatment insert 3.
  • the reduction in cross section is carried out in a targeted manner in accordance with Fig. 2 sets a radial tension between the exhaust gas treatment insert 3 and the housing shell 2. This is achieved here in that the bearing mat 6 is compressed by the cross-sectional reduction of the housing shell 2. Accordingly, the cross-sectional reduction of the housing shell 2 can simultaneously lead to a corresponding reduction of the outer cross section 10 of the exhaust gas treatment insert 3.
  • the cross-sectional reduction takes place with regard to a specific nominal cross-section of the housing shell 2, in which experience has shown that a sufficient tension is formed at all occurring tolerances of the exhaust treatment inserts 3.
  • the desired nominal cross section may be the inner end cross section 13 or else an externally measured end cross section of the housing jacket 2.
  • the cross-sectional reduction in the end region 8 in terms to perform a desired cross-section, in which for all occurring dimensional tolerances of the hopper 4 a circumferentially closed surface contact is ensured.
  • the outer cross-section 11 of the funnel 4 it is in principle possible for the outer cross-section 11 of the funnel 4 to be reduced as the cross-section is reduced. Again, can be monitored as the desired cross section of the inner cross section or the outer cross section of the housing shell 2.
  • funnel 4 and exhaust gas treatment insert 3 can be selected independently of one another with regard to their outer cross sections 10, 11.
  • the embodiment shown here is preferred, in which the outer funnel cross section 11 before the cross-sectional reduction and after the cross-sectional reduction is smaller than the outer cross section 10 of the exhaust treatment insert 3.
  • embodiments are also possible in which the funnel outer cross section 11 before the cross-section reduction about the same size is as or even greater than the outer cross section 10 of the exhaust treatment insert 3.
  • constellations are possible in which the outer funnel cross section 11 after cross-section reduction is greater than the outer cross section 10 of the exhaust treatment insert 3.
  • the funnel 4 is manufactured within its manufacturing tolerances so that its outer cross section 11 corresponds approximately to the outer cross section 10 of the exhaust treatment insert 3, the exhaust treatment insert 3 after cross-section reduction, so after the calibration should have.
  • the first end cross-section 13 and the second end cross-section 14 may be the same size.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (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)
EP06111420A 2005-05-11 2006-03-21 Méthode de fabrication d'un appareil de purification des gaz d'échappement Withdrawn EP1722081A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005200225 2005-05-11

Publications (1)

Publication Number Publication Date
EP1722081A1 true EP1722081A1 (fr) 2006-11-15

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Application Number Title Priority Date Filing Date
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013174668A1 (fr) * 2012-05-21 2013-11-28 Eberspächer Exhaust Technology GmbH & Co. KG Dispositif de retraitement de gaz d'échappement et procédé de fabrication associé

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4148120A (en) 1974-07-16 1979-04-10 Volkswagenwerk Aktiengesellschaft Method of manufacturing a catalyst for catalytic purification of exhaust gases
US4160010A (en) 1976-05-28 1979-07-03 J. Eberspacher Device for purifying exhaust gases
DE19723939A1 (de) * 1997-06-06 1998-12-10 Leico Werkzeugmaschb Gmbh & Co Verfahren zur Herstellung eines Abgaskatalysators
EP1118749A2 (fr) * 2000-01-20 2001-07-25 J. Eberspächer GmbH & Co. Catalyseur de gaz d'échappement
DE10249675A1 (de) * 2002-10-24 2004-05-13 Siemens Ag Verfahren zur Herstellung eines Katalysatormoduls und Katalysatormodul

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4148120A (en) 1974-07-16 1979-04-10 Volkswagenwerk Aktiengesellschaft Method of manufacturing a catalyst for catalytic purification of exhaust gases
US4160010A (en) 1976-05-28 1979-07-03 J. Eberspacher Device for purifying exhaust gases
DE19723939A1 (de) * 1997-06-06 1998-12-10 Leico Werkzeugmaschb Gmbh & Co Verfahren zur Herstellung eines Abgaskatalysators
EP1118749A2 (fr) * 2000-01-20 2001-07-25 J. Eberspächer GmbH & Co. Catalyseur de gaz d'échappement
DE10249675A1 (de) * 2002-10-24 2004-05-13 Siemens Ag Verfahren zur Herstellung eines Katalysatormoduls und Katalysatormodul

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013174668A1 (fr) * 2012-05-21 2013-11-28 Eberspächer Exhaust Technology GmbH & Co. KG Dispositif de retraitement de gaz d'échappement et procédé de fabrication associé
EP2852738B1 (fr) 2012-05-21 2016-07-13 Eberspächer Exhaust Technology GmbH & Co. KG Dispositif de retraitement de gaz d'échappement et procédé de fabrication associé
US9765681B2 (en) 2012-05-21 2017-09-19 Eberspächer Exhaust Technology GmbH & Co. KG Method for producing an exhaust-gas aftertreatment device

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