EP1231366B1 - Partie de boitier pour dispositif de purification des gaz d'échappement d'un véhicule automobile, en particulier pour un silencieux d'échappement ou un catalyseur pour gaz d'échappement - Google Patents

Partie de boitier pour dispositif de purification des gaz d'échappement d'un véhicule automobile, en particulier pour un silencieux d'échappement ou un catalyseur pour gaz d'échappement Download PDF

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Publication number
EP1231366B1
EP1231366B1 EP01130370A EP01130370A EP1231366B1 EP 1231366 B1 EP1231366 B1 EP 1231366B1 EP 01130370 A EP01130370 A EP 01130370A EP 01130370 A EP01130370 A EP 01130370A EP 1231366 B1 EP1231366 B1 EP 1231366B1
Authority
EP
European Patent Office
Prior art keywords
housing part
exhaust
exhaust housing
sheet
thickness
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 - Lifetime
Application number
EP01130370A
Other languages
German (de)
English (en)
Other versions
EP1231366A1 (fr
Inventor
Norbert Klein
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 EP1231366A1 publication Critical patent/EP1231366A1/fr
Application granted granted Critical
Publication of EP1231366B1 publication Critical patent/EP1231366B1/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
    • 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
    • F01N13/1872—Construction facilitating manufacture, assembly, or disassembly the assembly using stamp-formed parts or otherwise deformed sheet-metal
    • 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
    • F01N13/1888—Construction facilitating manufacture, assembly, or disassembly the housing of the assembly consisting of two or more parts, e.g. two half-shells
    • 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
    • Y10T29/49345—Catalytic device 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
    • Y10T29/49398—Muffler, manifold or exhaust pipe making

Definitions

  • the invention relates to an exhaust gas housing part of a motor vehicle, especially for an exhaust muffler or Exhaust gas catalytic converter of a passenger car, with a Blank as a semi-finished product, which after an embossing process in one Tool an upper half shell or a lower half shell a half-shell muffler or catalytic converter or after an unwound operation in a tool a wound exhaust funnel or cylinder, or an exhaust connection piece formed.
  • EP 0 324 891 A1 discloses such an exhaust gas housing part of a motor vehicle for an exhaust gas silencer of a passenger car, with one Blank as a semi-finished product, which after an embossing process in one Tool an upper half shell and a lower half shell of a half-shell silencer.
  • the object of the invention is to provide an exhaust gas housing part a motor vehicle of the type mentioned with a special board as a semi-finished product, as well as a manufacturing process a circuit board or an exhaust housing part, which or which has high strength and high dimensional stability has and yet is lightweight.
  • a manufacturing device is characterized by the Features of claim 10. Advantageous further developments result resulting from the dependent claims 11 to 15.
  • a manufacturing process of a circuit board or an exhaust gas housing part is characterized by the features of the claim 16th
  • the essence of the invention is a special structure of a one-piece PCB in a prefabrication for one to be manufactured Exhaust muffler, exhaust gas catalytic converter, exhaust funnel, exhaust gas cylinder jacket, Exhaust nozzle or the like in half-shell or winding or jacket construction.
  • an exhaust gas housing part identifies one Motor vehicle, especially for an exhaust silencer or an exhaust gas catalytic converter of a passenger car, with a blank as a semi-finished product after an embossing process an upper half shell or a lower one in one tool Half-shell of a half-shell silencer or catalytic converter or after unwinding in a tool wound exhaust funnel or cylinder, or an exhaust connection piece trained by a circuit board in the form of a one-piece, profiled sheet metal part different Thickness with at least one band section of smaller thickness and at least one band section of greater thickness that the manufactured Exhaust housing part (half shell, funnel, cylinder or Locally) at least in a wall area.
  • the circuit board preferably has two lateral band sections smaller thickness and an intermediate band section greater thickness.
  • the two side band sections of smaller thickness can be the same.
  • the band section of greater thickness can be at least one raised one be narrow longitudinal web or at least a raised narrow Also include the longitudinal bar.
  • the sheet metal part may have at least one Surface a rolled pattern, which preferably Vertical and / or horizontal stripes, checks or circular or square Pimples are.
  • the band sections are particularly linear in the longitudinal direction of the exhaust gas housing part to be manufactured.
  • the band sections can also be in the transverse direction of the exhaust housing part to be manufactured expanded in the middle or be restricted and a curved connecting edge have in the longitudinal direction of the exhaust gas housing part to be manufactured.
  • the band sections can also have a linear connection edge that is oblique with respect the longitudinal direction of the exhaust gas housing part to be manufactured runs.
  • An advantageous rolling device for producing a board provides at least two profiled pressure rollers, the axial distance from one another is preferably adjustable.
  • the pressure rollers are preferably interchangeable.
  • the pressure rollers can also use interchangeable profiled roller cylinders or roll cylinder rings, which preferably a different rolled profile and / or a different one Have cylinder diameter.
  • the pressure rollers or the roller cylinders or roller cylinder rings can not only be circular in cross section, but also have at least partially oval shape to different Form thicknesses in the transverse direction of a board.
  • a method for manufacturing an exhaust housing part provides in particular a prefabrication of a one-piece part reinforced board by rolling a strip material.
  • the board is made from a strip material as a one-piece, profiled sheet metal part of different thickness with at least one band section of smaller thickness and at least prefabricated a section of tape of greater thickness that the manufactured exhaust housing part (half shell, funnel, cylinder or nozzle) locally reinforced at least in a wall area.
  • the one-piece, profiled sheet metal part is, for example in an embossing tool consisting at least of stamp and Stamped in order to in particular an (upper or lower) Form half-shell. It is understood that stamp and / or die of the embossing tool for the partially thicker one
  • the circuit board is configured or recessed accordingly.
  • the aforementioned board can not only one stamping process, but as a prefabricated semi-finished product in a corresponding Tool also undergo a winding process to exhaust housing parts in a wrap or jacket design with partial Manufacture jacket reinforcement.
  • the wrapped shells, Pipes or jacket are preferably with a longitudinal weld provided, in particular with a laser weld.
  • the invention advantageously makes exhaust gas housing parts, in particular embossed half-shells of exhaust silencers and Exhaust gas catalysts, can be designed in a lightweight design, without loss to have to accept strength or dimensional stability.
  • the exhaust housing parts are only in those places where special demands are placed on strength, in the wall thickness by increasing the profile accordingly partially reinforced. In all other places is the wall thickness the board or the individual sheets low, so that with the overall wall reduction there a weight reduction and material savings result.
  • According to the state of the Technology would have a single-wall design of an exhaust housing part there, too, a greater thickness not required per se a single sheet or a board designed or on Double wall construction can be transferred. Because the board not even from several assembled, welded together Individual parts, but is made in one piece, also do not have to put together individual parts and with each other are welded, which simplifies the manufacturing process.
  • the invention is particularly suitable for bowl-shaped Parts for exhaust silencers and exhaust catalysts, however also for other parts where different Wall thickness while respecting the requirements regarding structure-borne noise, Heat shielding and durability make weight reduction is possible. So it is preferably half-shell-shaped Parts of an exhaust system partially on selected Places to maintain function, strength and heat shielding strengthened. The boards will be in front of you Embossing or winding into the final shape from cut sheets rolled. Also the function of the manufactured exhaust housing part improved.
  • an exhaust housing part in the form of an exhaust silencer 2 for an exhaust system of a motor vehicle as well as boards required for production 1 in different Design variants with manufacturing tools shown.
  • the exhaust muffler 2 in half-shell construction has one upper and a lower half-shell 6, which in their horizontal Parting plane by means of a circumferential fold or an edge weld 20 are firmly connected.
  • the circuit board 1 for the exhaust gas housing part of the motor vehicle in particular for the exhaust gas silencer 2 or an exhaust gas catalytic converter of a passenger car, which according to a Embossing process in a tool 3, 4, 5 an upper half shell or a lower half-shell of a half-shell silencer or catalyst or after unwinding in one Tool a wound exhaust funnel or cylinder, or forms an exhaust connection, has a special Construction.
  • the circuit board 1 is a one-piece, profiled Rolled sheet metal part of different thickness with at least one Band section 10 of smaller thickness S2 and at least one Band section 11 of greater thickness S1, which is the manufactured exhaust housing part (Half-shell, funnel, cylinder or nozzle) at least locally reinforced in a wall area.
  • the manufactured exhaust housing part Half-shell, funnel, cylinder or nozzle
  • the band section 11 of greater thickness can be at least one raised one be narrow longitudinal web or at least according to Figure 6 additionally include a raised narrow longitudinal web 12.
  • the board 1 or the sheet metal part can be at least on one Have a rolled-in pattern 13 according to FIG. 8, which, for example, longitudinal and / or horizontal stripes, checks or can be circular or square knobs.
  • the band sections 10, 11 are preferably linear in the longitudinal direction of the exhaust gas housing part to be manufactured according to FIG. 1 trained, but can with the appropriate rolling profile Manufacturing tool can also be configured differently.
  • the reference number 9 denotes a round transition between the thinner and thicker Band sections 10 and 11.
  • the band sections 10, 11 can also be linear Have connecting edge 15 which is oblique with respect to the longitudinal direction of the exhaust gas housing part to be produced runs as this is illustrated, for example, in FIGS. 6 and 7 is.
  • FIGS. 9 and 10 two are in opposite directions driven profiled pressure rollers 16, 17 provided the Profile the negative profile to be produced shown in Figure 1 Board 1 corresponds.
  • the axial distance d between the two axially parallel Printing rollers 16, 17 are adjustable.
  • the profiled pressure rollers are preferred to those profiled differently Interchangeable printing rollers.
  • the pressure rollers themselves can be replaced with interchangeable profiled cylinder cylinders 18 or roll cylinder rings have, such as this shown with a broken line in Figure 10 is.
  • the interchangeable roller cylinders 18 or roller cylinder rings have different rolled profiles and / or different Cylinder diameter to different manufacturing profiles and sizes of circuit boards 1 for example according to the Figures 4 to 8 meet.
  • the pressure rollers 16, 17 or the roller cylinders 18 or roller cylinder rings can over the entire axial length or over an axial partial length a cross section in oval shape according to the figure 11 or locally have at least one indentation, which in the final shape of an embossed or wound circuit board 1 corresponds to a wall reinforcement area.
  • a method for producing an exhaust housing part with A board as a semi-finished product provides that the board 1 a strip material as a one-piece, profiled sheet metal part different thickness with at least one band section 10 smaller thickness S2 and at least one band section 11 of greater thickness S1 in a rolling device Figures 9 to 11 is prefabricated, the band section 11 with the greater thickness S2 the manufactured exhaust housing part (Half-shell, funnel, cylinder or nozzle) at least locally reinforced in a wall area.
  • Such a pre-fabricated board 1 is in a tool according to Figure 12 in the final shape of a half-shell 6 according the figures 13 and 2 coined.
  • the tool comprises a die 3, a retaining ring 4 and one Stamp 5.
  • the prefabricated circuit board 1 is placed on the holding ring 4 in advance positioned. Then the die 3 closes in the direction of the retaining ring 4 to clamp the prefabricated flat board 1. in the The stamp is connected to it in the direction of arrow P according to FIG 14 moves upwards and the embossing process of the half-shell 6 carried out from the semi-finished product of the prefabricated board 1, whereby for embossing also the die 3 together with the holding ring 4 against the then stationary stamp 5 can be moved down.
  • the board 1 After completion of the stamping process, the board 1 receives the in Figure 12 drawn in the die 3 form.
  • the above-mentioned blanks 1 can not only be an embossing process, but as a prefabricated semi-finished product in a corresponding Tool can also be subjected to a winding process in order to be wound Exhaust housing parts in a winding or jacket design to be produced with partial jacket reinforcement.
  • the wrapped Shells, pipes or jackets are preferably made with a Longitudinal weld, in particular with a laser weld, Mistake.

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

Claims (16)

  1. Partie de carter d'échappement d'un véhicule automobile, notamment pour un silencieux d'échappement (2) ou un catalyseur pour gaz d'échappement d'une automobile, comprenant une platine (1) en tant que produit semi-fini, qui constitue, après une opération d'estampage dans un outil (3, 4, 5) une demi-coque supérieure ou une demi-coque inférieure d'un silencieux à demi-coques ou d'un catalyseur à demi-coques, ou après une opération de déroulement dans un outil, un entonnoir ou un cylindre de gaz d'échappement, ou un ajutage de gaz d'échappement,
    caractérisée en ce que
    la platine (1) est une pièce en tôle laminée profilée d'une seule pièce d'épaisseur différente avec au moins une portion de bande (10) de plus petite épaisseur (S2) et au moins une portion de bande (11) de plus grosse épaisseur (S1), qui renforce localement la partie de carter d'échappement fabriquée au moins dans une région de paroi.
  2. Partie de carter d'échappement selon la revendication 1,
    caractérisée en ce que
    la platine (1) présente deux portions de bande latérales (10) de plus petite épaisseur (S2) et une portion de bande (11) de plus grosse épaisseur (S1) située entre les deux.
  3. Partie de carter d'échappement selon la revendication 2,
    caractérisée en ce que
    les deux portions de bande latérales (10) de plus petite épaisseur (S2) sont réalisées de manière identique.
  4. Partie de carter d'échappement selon l'une quelconque des revendications 1 à 3,
    caractérisée en ce que
    la portion de bande (11) de plus grosse épaisseur est au moins une nervure longitudinale étroite rehaussée ou comprend au moins en plus une nervure longitudinale étroite rehaussée (12).
  5. Partie de carter d'échappement selon l'une quelconque des revendications 1 à 4,
    caractérisée en ce que
    la partie de tôle laminée présente au moins un gaufrage (13) sur une surface.
  6. Partie de carter d'échappement selon la revendication 5,
    caractérisée en ce que
    le gaufrage (13) est constitué par des rubans longitudinaux et/ou transversaux, des carreaux ou des protubérances circulaires rondes ou quadratiques.
  7. Partie de carter d'échappement selon l'une quelconque des revendications 1 à 6,
    caractérisée en ce que
    les portions de bande (10, 11) sont réalisées de manière linéaire dans la direction longitudinale de la partie de carter d'échappement à fabriquer.
  8. Partie de carter d'échappement selon l'une quelconque des revendications 1 à 6,
    caractérisée en ce que
    les portions de bande (10, 11) sont élargies ou rétrécies dans la direction transversale de la partie de carter d'échappement à fabriquer et présentent un bord de liaison courbe (7, respectivement 8) dans la direction longitudinale de la partie de carter d'échappement à fabriquer.
  9. Partie de carter d'échappement selon l'une quelconque des revendications 1 à 6,
    caractérisée en ce que
    les portions de bande (10, 11) présentent un bord de liaison linéaire (15) qui s'étend obliquement par rapport à la direction longitudinale de la partie de carter d'échappement à fabriquer.
  10. Dispositif de laminage pour la fabrication d'une platine selon l'une quelconque des revendications 1 à 9,
    caractérisé en ce que
    l'on prévoit au moins deux rouleaux presseurs profilés (16, 17).
  11. Dispositif de laminage selon la revendication 10,
    caractérisé en ce que
    la distance axiale (d) entre les deux rouleaux presseurs (16, 17) s'étendant avec leurs axes parallèles l'un à l'autre est ajustable.
  12. Dispositif de laminage selon la revendication 10
    ou 11,
    caractérisé en ce que
    les rouleaux presseurs sont remplaçables.
  13. Dispositif de laminage selon l'une quelconque des revendications 10 à 12,
    caractérisé en ce que
    les rouleaux presseurs possèdent des cylindres de laminage profilés remplaçables (18).
  14. Dispositif de laminage selon la revendication 13,
    caractérisé en ce que
    les cylindres de laminage (18) possèdent un profil de laminage différent et/ou des diamètres de cylindres différents.
  15. Dispositif de laminage selon l'une quelconque des revendications 10 à 13,
    caractérisé en ce que
    les rouleaux presseurs (16, 17) ou les cylindres de laminage (18) possèdent une forme au moins partiellement ovale en section transversale.
  16. Procédé de fabrication d'une partie de carter d'échappement avec une platine en tant que produit semi-fini selon l'une quelconque des revendications 1 à 9, en utilisant un dispositif de fabrication selon l'une quelconque des revendications 10 à 15,
    caractérisé en ce que
    la platine (1) est préfabriquée à partir d'un matériau en bande sous forme d'une pièce en tôle laminée profilée d'une seule pièce d'épaisseur différente avec au moins une portion de bande (10) de plus petite épaisseur (S2) et au moins une portion de bande (11) de plus grosse épaisseur (S1), qui renforce localement la partie de carter d'échappement fabriquée au moins dans une région de paroi.
EP01130370A 2001-02-13 2001-12-20 Partie de boitier pour dispositif de purification des gaz d'échappement d'un véhicule automobile, en particulier pour un silencieux d'échappement ou un catalyseur pour gaz d'échappement Expired - Lifetime EP1231366B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10106559 2001-02-13
DE10106559A DE10106559A1 (de) 2001-02-13 2001-02-13 Abgas-Gehäuseteil eines Kraftfahrzeuges

Publications (2)

Publication Number Publication Date
EP1231366A1 EP1231366A1 (fr) 2002-08-14
EP1231366B1 true EP1231366B1 (fr) 2004-05-06

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP01130370A Expired - Lifetime EP1231366B1 (fr) 2001-02-13 2001-12-20 Partie de boitier pour dispositif de purification des gaz d'échappement d'un véhicule automobile, en particulier pour un silencieux d'échappement ou un catalyseur pour gaz d'échappement

Country Status (4)

Country Link
US (1) US6892852B2 (fr)
EP (1) EP1231366B1 (fr)
DE (2) DE10106559A1 (fr)
ES (1) ES2219476T3 (fr)

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DE10104468A1 (de) * 2001-02-02 2002-08-29 Eberspaecher J Gmbh & Co Platine für ein Abgas-Gehäuseteil eines Kraftfahrzeugs sowie Verfahren zur Herstellung des Abgas-Gehäuseteils
WO2004042203A2 (fr) * 2002-10-31 2004-05-21 White Brothers Performance Products, Inc. Silencieux pare-etincelle
US7587819B1 (en) * 2002-12-23 2009-09-15 Hall Jr Herbert L Insert for a catalytic converter and method and apparatus for forming an insert for a catalytic converter
DE202004000659U1 (de) * 2004-01-17 2004-04-15 Heinrich Gillet Gmbh Schalldämpfer für Kraftfahrzeuge mit Verbrennungsmotor
DE102005009749A1 (de) * 2005-03-03 2006-09-07 Arvinmeritor Emissions Technologies Gmbh Gehäuse für ein Bauteil einer Abgasanlage
DE102007027372A1 (de) * 2007-06-11 2008-12-18 Cognis Oleochemicals Gmbh Verfahren zur Hydrierung von Glycerin
DE102007027371A1 (de) * 2007-06-11 2008-12-18 Cognis Oleochemicals Gmbh Verfahren zur Herstellung einer Verbindung aufweisend mindestens eine Ester-Gruppe
US20100247945A1 (en) * 2009-03-30 2010-09-30 Gm Global Technology Operations, Inc. Sheet Metal Panel Shape for Low Sound Radiation
FR2951496B1 (fr) * 2009-10-20 2011-12-16 Peugeot Citroen Automobiles Sa Systeme de depollution des gaz d'echappement d'un moteur thermique de vehicule automobile
DE102010010094A1 (de) * 2010-03-04 2011-09-08 Bayerische Motoren Werke Aktiengesellschaft Kraftfahrzeug
DE102012209932A1 (de) * 2012-06-13 2013-12-19 Eberspächer Exhaust Technology GmbH & Co. KG Leichtbau-Schalldämpfer
US9677455B2 (en) * 2014-07-17 2017-06-13 Big Rapids Products, Inc. Stackable muffler shell

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US2187431A (en) * 1938-02-03 1940-01-16 Herbert S Powell Method of assembling mufflers
US3064336A (en) * 1955-12-05 1962-11-20 Walker Mfg Company Of Wisconsi Method of making mufflers
US3279168A (en) * 1964-05-01 1966-10-18 Stephen G Gerlach Muffler and oxidizer means
US4821840A (en) * 1988-01-20 1989-04-18 Ap Parts Manufacturing Company Stamp formed exhaust muffler with conformal outer shell
DE3826707A1 (de) * 1988-08-05 1990-02-08 Gruenzweig & Hartmann Verfahren zum herstellen eines abgas-schalldaempfers
US4905791A (en) * 1989-01-23 1990-03-06 Ap Parts Manufacturing Company Light weight hybrid exhaust muffler and method of manufacture
US5004069A (en) * 1990-01-26 1991-04-02 Ap Parts Manufacturing Company Stamp formed muffler with transverse baffle tube
US4958701A (en) * 1990-03-26 1990-09-25 Ap Parts Manufacturing Company Stamp formed muffler with pocket-free baffle crease
US5428194A (en) * 1993-10-19 1995-06-27 Ap Parts Manufacturing Company Narrow width stamp formed muffler
US5448831A (en) * 1993-11-08 1995-09-12 Ap Parts Manufacturing Company Method of manufacturing a stamp formed muffler with hermetically sealed laminated outer shell
DE4437986A1 (de) * 1994-10-24 1996-04-25 Frank Dr Mirtsch Verfahren zur Wölbstrukturierung dünner Wände und Folien
US6135237A (en) * 1998-04-03 2000-10-24 Arvin Industries, Inc. Stamp-formed muffler
CA2336876A1 (fr) * 1998-07-07 2000-01-13 Arvinmeritor, Inc. Piece d'echappement a enveloppe exterieure multiplaque

Also Published As

Publication number Publication date
ES2219476T3 (es) 2004-12-01
EP1231366A1 (fr) 2002-08-14
DE50102197D1 (de) 2004-06-09
DE10106559A1 (de) 2002-08-29
US20020108428A1 (en) 2002-08-15
US6892852B2 (en) 2005-05-17

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