WO2008086986A1 - Procédé de production d'un dispositif de guidage de gaz d'échappement, et outil de production d'un dispositif de guidage de gaz d'échappement - Google Patents

Procédé de production d'un dispositif de guidage de gaz d'échappement, et outil de production d'un dispositif de guidage de gaz d'échappement Download PDF

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Publication number
WO2008086986A1
WO2008086986A1 PCT/EP2008/000209 EP2008000209W WO2008086986A1 WO 2008086986 A1 WO2008086986 A1 WO 2008086986A1 EP 2008000209 W EP2008000209 W EP 2008000209W WO 2008086986 A1 WO2008086986 A1 WO 2008086986A1
Authority
WO
WIPO (PCT)
Prior art keywords
insert
outer housing
housing jacket
tool
stops
Prior art date
Application number
PCT/EP2008/000209
Other languages
German (de)
English (en)
Inventor
Erich Forster
Original Assignee
Emcon Technologies Germany (Augsburg) Gmbh
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 Emcon Technologies Germany (Augsburg) Gmbh filed Critical Emcon Technologies Germany (Augsburg) Gmbh
Publication of WO2008086986A1 publication Critical patent/WO2008086986A1/fr

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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
    • F01N13/009—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 having two or more separate purifying devices arranged in series
    • F01N13/0097—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 having two or more separate purifying devices arranged in series the purifying devices are arranged in a single housing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
    • B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
    • B23P2700/03—Catalysts 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
    • F01N2350/00—Arrangements for fitting catalyst support or particle filter element in the housing
    • F01N2350/02—Fitting ceramic monoliths in a metallic 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
    • 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

Definitions

  • the invention relates to a method for producing an exhaust gas-carrying device, in particular an exhaust gas purification device, which has an outer casing jacket with an elongated insert clamped therein. Furthermore, the invention relates to a tool for producing an exhaust gas-conducting device, which has an insert in an outer housing jacket, and a tool for plugging an elongated insert of an exhaust gas-conducting device into a prefabricated outer housing jacket.
  • the exhaust gas-carrying devices that are involved in the invention are, for example, mufflers, but in particular exhaust gas purification devices such as catalysts or particle filters or combinations thereof.
  • exhaust gas purification devices such as catalysts or particle filters or combinations thereof.
  • radial pressure depositors are housed, which are usually axially flowed through ceramic substrates, which may be wrapped with an elastic compensation element in the form of a bearing mat.
  • a depositor may also have a plurality of substrates arranged axially one behind the other, which are accommodated in a common outer housing jacket (peripheral portion of the outer housing).
  • the insert is held in the outer shell by radial clamping, with additional axial support, e.g. is usual by axially adjacent to the insert arranged wire knit rings.
  • an outer housing jacket made of sheet metal is first preformed. Subsequently, the insert is placed in the preformed metal jacket, the metal jacket firmly wrapped around the insert and then closed, eg welded. After closing the jacket, a lateral support element in the form of a wire knit ring is used on both end faces of the insert, which is why the jacket has a slightly greater axial length than the insert. After inserting the wire knit rings, the ends of the sheet metal jacket are welded to one end cone and finished the outer housing shell thereby.
  • the insert In order to position the insert in the outer housing jacket, the insert is pushed so far at one axial end in the tool against a stop and then wrapped with the outer housing jacket, whereby on the side facing the stop a precisely defined housing overhang is achieved with respect to the insert.
  • the inserts (or the substrates) and also the jacket plates have certain length tolerances. Particularly in the case of an insert with a plurality of substrates arranged axially one behind the other, the tolerances can add up to deviations of more than ⁇ 2 mm. Therefore, the jacket projection formed on the opposite side of the insert is subject to great fluctuations, since all tolerances of the individual components add up here.
  • the axial tolerance can be compensated, for example, by the wire knit ring used here, for which purpose a particularly thick and therefore expensive wire knit ring is required in the case of a very short insert.
  • a compensation is not possible because with the thickness or compression of the wire knit ring and the force exerted by this on the insert holding force increases, however, must not exceed a certain limit due to the pressure sensitivity of the insert.
  • the invention provides a method and a tool for producing an exhaust gas-carrying device, which is characterized by a secure axial support of the insert in the outer housing jacket at low production costs.
  • the insert is inserted into a tool for mounting the outer housing jacket
  • the insert or outer shell is longitudinally displaced relative to and aligned with the other of the two parts (i.e., the outer shell), and
  • the insert is clamped in the outer casing.
  • the insert is displaced and aligned relative to the outer housing jacket. Due to the axial orientation of the insert relative to the outer housing shell, the manufacturing total tolerance spreads evenly on both axial ends of the outer housing shell, ie the projection of the outer housing jacket relative to the deposit may have the same deviation from the nominal value, however, compared to the deviation in a according to the state of Technology manufactured device is only half as large.
  • both wire knit rings can be compressed to the same degree, whereby they exert the same biasing or holding force and secure the insert in the axial direction in the outer housing jacket.
  • the insert is centered relative to the outer shell, i.e., the projection of the outer shell relative to the insert is the same at both axial ends.
  • axial offset between see depositors and outer shell achieve.
  • Such axial offset for centered positioning may be advantageous to compensate for loads encountered during driving (e.g., backpressure gas).
  • the insert comprises at least one exhaust-gas-flowed substrate.
  • This can optionally be wrapped with an elastic compensation element in the form of a bearing mat, wherein under the
  • the device may be an exhaust gas catalyst, a particulate filter or a combination of both.
  • a sheet metal housing is used as the outer housing jacket.
  • the insert has a unit of two axially successively arranged exhaust gas flowed through Substrates with an interposed elastic support element, in particular a wire knit ring, on.
  • an interposed elastic support element in particular a wire knit ring
  • the support element is biased during centering, so even before the clamping of the insert in the outer housing jacket. In this way, displacements of the substrates relative to one another during later operation can be avoided.
  • the insert is mounted axially displaceable between two attacks evenly movable towards each other attacks.
  • step b) and before step c) the two stops move toward each other, and that stop which is closer to the insert pushes it towards the second stop until finally both stops abut the end face of the insert and the alignment is achieved.
  • the insert could be kept stationary and the outer housing shell accordingly axially displaced relative to the depositors to align the two parts or better said assemblies relative to each other.
  • its position can be measured relative to the outer housing jacket for centering the insert.
  • a second aspect of the invention provides a method of manufacturing an exhaust gas delivery device comprising the steps of:
  • This method ensures that the support element arranged between the substrates is already compacted to a desired extent in the outer casing shell prior to assembly of the insert, thereby achieving the holding force to be achieved.
  • the substrates are held securely in the axial direction, whereby unwanted displacements of the substrates relative to each other (in particular during operation) can be avoided.
  • this is preferably held during the assembly of the insert in the outer casing sheath under prestress.
  • the support element is e.g. a wire mesh ring.
  • both methods according to the invention can be combined with various methods known per se for the production or assembly of the outer housing jacket.
  • the outer housing jacket can be produced by winding around the insert.
  • the insert can also be inserted into the tool together with the end walls of the housing and positioned or centered by the tool relative to the outer housing jacket.
  • the insert is stuffed longitudinally into a prefabricated cylindrical outer housing jacket.
  • a further aspect of the invention provides a tool for producing an exhaust-gas-conducting device, which has an insert in an outer housing jacket, with two axial axes which can be moved in the longitudinal direction of the insert Stops, between which the insert is received, and a receptacle for the outer housing jacket, wherein the movable stops are coupled together and can be uniformly moved axially in opposite directions via a common drive to center the insert axially relative to the receptacle for the outer housing jacket. Since the movable stops move evenly in the axial direction to each other, it is irrelevant in which position of the insert is initially inserted between the attacks, since the alignment or centering is carried out automatically by the opposite movement at the same speed.
  • the tolerances for the lateral jacket projection are halved with all the resulting advantages.
  • the tool according to the invention is particularly simple and therefore inexpensive.
  • the movable stops can be easily integrated into a conventional tool for producing an exhaust gas-carrying device, such as a winding device or a calibration device, which in addition to a cost also saves time, since the alignment or centering occur almost simultaneously with the closing of the housing can.
  • the outer housing jacket can also be displaced by the stops in the tool according to the invention, whereas the insert is held in a fixed space. This is only a question of the respective frame of reference.
  • a particularly simple embodiment is obtained in that two position-fixed stops are provided which predetermine the position of the outer housing sleeve and form the receptacle for the outer housing jacket.
  • the fixed position stops each have an approximately central
  • At least one movable stop can be coupled to a load cell.
  • a particularly simple drive is obtained when the movable stops are driven by a common spindle, wherein the stops spindle sections are associated with opposite threads. This can the depositor be centered without the aid of an electronic control unit.
  • the spindle is e.g. driven by an electric motor with controllable torque.
  • the movable stops are coupled to one another via a scissors linkage.
  • This or the movable stops are e.g. pneumatically, hydraulically or electrically driven.
  • Another aspect of the invention provides a tool for plugging an elongated insert of an exhaust gas delivery device into a prefabricated outer housing shell having a holder for the outer housing jacket, a movable punch for inserting the end face of the insert into the outer housing shell and a measuring device, the position of the insert relative to the outer casing casing. Based on the measured data, the insert is centered in the outer casing when being plugged.
  • a controller which detects and evaluates the measurement data.
  • This control can be coupled, for example, with the punch for inserting the insert.
  • the metering device is designed to determine the distances between each front end of the insert and the associated end of the outer shell when plugging, and the measured distances are compared in the control, the plug being terminated as soon as the measured distances to match. At this time, the insert is centered in the outer shell casing.
  • FIG. 1 is a partially sectioned view of a tool according to a first embodiment of the invention for carrying out the method according to the invention, with a not yet centered insert;
  • FIG. 2 is a partially sectioned view of the tool of Figure 1, but after centering of the insert;
  • FIGS. 3a and 3b are partially sectional views of a tool similar to FIG. 1, but in a modified embodiment in different applications;
  • FIG. 4 is a partially sectioned view of a stuffing tool according to the invention during the Stopfvorgangs a gas-conducting device;
  • FIG. 5 is a sectional view of the exhaust gas-conducting device of Figure 4 after completion of Stopfvorgangs.
  • FIG. 1 shows a tool 10, which is used to produce an exhaust-gas-conducting device, in particular for mounting an insert 12 of the exhaust-gas-conducting device in an outer housing jacket 14.
  • the insert 12 has two substrates 16 and 18 which are arranged axially one behind the other and between which an elastic support element 20 in the form of a wire knit ring is arranged.
  • the substrate 16 serves e.g. as a particle filter, the substrate 18 as an oxidation catalyst. Notwithstanding the illustration shown in Figure 1, each substrate 16, 18 may be surrounded by a bearing mat.
  • the tool 10 has a receptacle 22 for the outer housing jacket 14, which is delimited by two position-fixed stops 24, which thus dictate the position of the outer housing jacket 14 in the device 10.
  • Each of the fixed position stops 24 has an approximately central recess 26 through which a respective movable axial stop 28 and 29 extends.
  • the movable stops 28, 29, which initially have a comparatively large distance from each other, are coupled to a spindle 30, which is driven by an electric motor 32 with controllable torque.
  • the stopper 28 is a spindle portion 34 and the stop 29 associated with a spindle portion 36, wherein the spindle portions 34 and 36 have opposing threads.
  • At least one of the movable stops, here exemplarily the stop 29, can additionally be coupled to a load cell 38.
  • the insert 12 is first prefabricated and placed in a pre-bent, not yet closed sheet metal tel, which forms the outer housing jacket 14, inserted.
  • a bearing mat is wrapped around the substrates 16, 18 to form the insert 12 before the outer housing jacket 14 is fabricated.
  • the insert 12, together with the outer housing shell 14 loosely surrounding it, is inserted into the device 10, wherein the outer housing jacket 14 comes to rest externally between the fixed stops 24 and the insert 12 between the inner movable stops 28, 29.
  • the position of the insert 12 relative to the outer shell 14 is still arbitrary at this time.
  • the support element 20 between the substrates 16, 18 is simultaneously biased by the substrates 16, 18 are acted upon in the axial or longitudinal direction L with a force.
  • the achieved bias can be monitored and adjusted accordingly.
  • the insert 12 is clamped in the outer housing jacket 14 by the outer housing jacket 14 in a conventional manner firmly wrapped around the insert 12 and welded (not shown).
  • the support element 20 is held under tension by the movable stops 28, 29.
  • the outer housing jacket 14 can be centered or aligned in the tool.
  • the stops 24 are not fixed in position, but coupled to the spindle 30 or a separate spindle (see broken lines in Fig. 2).
  • the outer housing jacket 14 can also be deliberately aligned axially offset relative to the insert 12 by a predetermined amount X.
  • X a predetermined amount
  • the insert 12 can be easily displaced by displacing the entire spindle together with the stops 28, 29 before the clamping of the outer housing jacket 14 takes place.
  • the outer casing jacket 14 could be moved by the amount X before it is closed, ie before clamping.
  • FIG. 3a shows a tool 10 slightly modified from FIG. 1, which differs from the previously described tool 10 only in that the movable stops 28, 29 are coupled to one another via a scissors linkage 40.
  • This or the movable stops 28, 29 are pneumatically, hydraulically or electrically driven (not shown) and thereby also move in the longitudinal direction L of the insert 12 in the same direction in opposite directions to center the insert 12 relative to the outer housing shell 14.
  • the illustration of the outer housing jacket 14 has been omitted in FIG. 3a.
  • a targeted eccentric alignment of insert 12 and outer housing jacket 14 can also be effected in the embodiment according to FIG. 3 by either insert 12 or outer housing jacket 14 before or after the relative movement of Insert 12 and outer housing jacket 14 are moved by the predetermined amount X.
  • the insert 12 is not only the substrates 16, 18 and the support element 20. Rather, here are still bearing rings 64 (usually wire rings) and funnel-shaped end walls 66 of the outer housing part of the insert 12.
  • the entire unit of the Parts 16, 18, 20, 64 and 66 are aligned / centered relative to the outer housing shell by sliding this unit in the tool between the stops 28, 29. After alignment and winding then the end walls 66 are welded to the outer housing shell 14. It should be emphasized that although only the shifting of the insert is shown in the embodiments, the same function can also be performed by displacing the outer housing jacket. It is also possible to displace the outer casing and insert by respectively associated stops.
  • FIG. 4 shows a tool 50 according to the invention which is used to stuff an elongate insert 12 into a prefabricated outer housing jacket 14.
  • the insert 12 again has two substrates 16, 18 and an elastic compensating element 20 arranged therebetween in the form of a wire knit ring.
  • the tool 50 has a holder 52 for the outer casing casing 14 and a movable punch 54, which inserts the insert 12 into the outer casing casing 14 on the front side.
  • a measuring device is provided, which is formed by the punch 54 and a displaceable sensor 56 which engage on opposite end sides of the insert 12 and are coupled to a controller 58.
  • the insert 12 in which each substrate 16, 18 is surrounded by a bearing mat 60 or 62, is manufactured as a unit. Subsequently, the outer housing jacket 14 is inserted into the holder 52 and the insert 12 by moving the punch 54 in the longitudinal direction L frontally inserted into the outer housing shell 14 (in the figure 4 to the right).
  • the outer housing jacket 14 already has its final dimensions in the radial direction.
  • the distance d t between the left end of the outer housing jacket 14 (or the holder 52) and the stamp applied to the insert 12 punch 54 and the distance d 2 between the right end of the outer housing jacket 14 (or Bracket 52) and the voltage applied to the insert 12 sensor 56 detected.
  • the distances d ⁇ and d2 are constantly compared in the controller 58 to each other. As soon as the distances di and ⁇ 2 reach the same values, the punch 54 is brought to a standstill and thus the stuffing process is ended. In the method performed in the device 50, therefore, the position of the insert 12 relative to the outer housing jacket 14 is measured, and thereby the insert 12 is aligned or centered relative to the outer housing jacket 14 during the stuffing operation.
  • the elastic support element 20 is already pretensioned outside the tool 50 to a desired minimum holding force. Subsequently, the insert 12 is stuffed with the prestressed support element 20 in the outer housing jacket 14. When stuffing the Vorspanng. Holding force increase at most slightly, since the front of the stuffing arranged with respect to the substrate 18 may have a braking effect.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

L'invention concerne un procédé de production d'un dispositif de guidage de gaz d'échappement, notamment d'un dispositif d'épuration de gaz d'échappement, qui possède une enveloppe de carter extérieur (14) dans laquelle est calé un élément d'insertion oblong (12). Selon ce procédé, on introduit l'élément d'insertion (12) dans un outil pour le montage de l'enveloppe de carter extérieur (14), on le déplace en direction longitudinale (L) par rapport à l'enveloppe de carter extérieur (14), on l'aligne et on le cale dans l'enveloppe de carter extérieur (14). Un autre procédé prévoit : de réaliser l'élément d'insertion (12) sous la forme d'une unité constituée de deux substrats (16, 18) disposés axialement l'un derrière l'autre, traversés par le flux de gaz d'échappement et entre lesquels est disposé un élément de soutien élastique (20) ; de précontraindre axialement l'élément de soutien (20) par sollicitation en force axiale des deux substrats (16, 18) ; et de monter l'élément d'insertion (12) dans l'enveloppe de carter extérieur (14). L'invention concerne en outre deux outils dans lesquels les procédés selon l'invention peuvent être mis en oeuvre.
PCT/EP2008/000209 2007-01-16 2008-01-11 Procédé de production d'un dispositif de guidage de gaz d'échappement, et outil de production d'un dispositif de guidage de gaz d'échappement WO2008086986A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007002376.8 2007-01-16
DE200710002376 DE102007002376A1 (de) 2007-01-16 2007-01-16 Verfahren zur Herstellung einer abgasführenden Vorrichtung sowie Werkzeug zur Herstellung einer abgasführenden Vorrichtung

Publications (1)

Publication Number Publication Date
WO2008086986A1 true WO2008086986A1 (fr) 2008-07-24

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PCT/EP2008/000209 WO2008086986A1 (fr) 2007-01-16 2008-01-11 Procédé de production d'un dispositif de guidage de gaz d'échappement, et outil de production d'un dispositif de guidage de gaz d'échappement

Country Status (2)

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DE (1) DE102007002376A1 (fr)
WO (1) WO2008086986A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019101694A1 (de) * 2019-01-24 2020-07-30 Volkswagen Aktiengesellschaft Vorrichtung mit Reinigungsvorrichttung zur Herstellung einer Abgasnachbehandlungsvorrichtung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4581206A (en) * 1983-05-24 1986-04-08 Honda Giken Kogyo Kabushiki Kaisha Catalytic converter
EP0681095A1 (fr) * 1994-05-02 1995-11-08 LEISTRITZ AG & CO. Abgastechnik Méthode et dispositif pour le montage d'un catalysateur de gaz d'échappement
US6532659B1 (en) * 2001-11-29 2003-03-18 Delphi Technologies, Inc. Method of forming a gas treatment device using a stuffing cone apparatus
EP1389675A2 (fr) * 2002-08-14 2004-02-18 Sango Co., Ltd. Procédé de fabrication d'une boíte comprenant un substrat fragile

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4581206A (en) * 1983-05-24 1986-04-08 Honda Giken Kogyo Kabushiki Kaisha Catalytic converter
EP0681095A1 (fr) * 1994-05-02 1995-11-08 LEISTRITZ AG & CO. Abgastechnik Méthode et dispositif pour le montage d'un catalysateur de gaz d'échappement
US6532659B1 (en) * 2001-11-29 2003-03-18 Delphi Technologies, Inc. Method of forming a gas treatment device using a stuffing cone apparatus
EP1389675A2 (fr) * 2002-08-14 2004-02-18 Sango Co., Ltd. Procédé de fabrication d'une boíte comprenant un substrat fragile

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