EP0884429A1 - Metallstruktur, bestehend aus zwei Verkleidungen und eine inneren Verstärkung, und diese enthaltende Auspufftopf - Google Patents

Metallstruktur, bestehend aus zwei Verkleidungen und eine inneren Verstärkung, und diese enthaltende Auspufftopf Download PDF

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Publication number
EP0884429A1
EP0884429A1 EP98401050A EP98401050A EP0884429A1 EP 0884429 A1 EP0884429 A1 EP 0884429A1 EP 98401050 A EP98401050 A EP 98401050A EP 98401050 A EP98401050 A EP 98401050A EP 0884429 A1 EP0884429 A1 EP 0884429A1
Authority
EP
European Patent Office
Prior art keywords
core
facing
blank
exhaust
facings
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP98401050A
Other languages
English (en)
French (fr)
Other versions
EP0884429B1 (de
Inventor
Nathalie Michelin
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.)
ECIA Equipements et Composants pour lIndustrie Automobile SA
Original Assignee
ECIA Equipements et Composants pour lIndustrie Automobile SA
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 ECIA Equipements et Composants pour lIndustrie Automobile SA filed Critical ECIA Equipements et Composants pour lIndustrie Automobile SA
Publication of EP0884429A1 publication Critical patent/EP0884429A1/de
Application granted granted Critical
Publication of EP0884429B1 publication Critical patent/EP0884429B1/de
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
    • F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
    • F01N13/1811—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body with means permitting relative movement, e.g. compensation of thermal expansion or vibration
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/34—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts
    • E04C2/3405—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts spaced apart by profiled spacer sheets
    • 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
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/24—Silencing apparatus characterised by method of silencing by using sound-absorbing materials
    • 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
    • F01N13/16—Selection of particular materials
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2839—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration
    • F01N3/2853—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration using mats or gaskets between catalyst body and housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • 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
    • F01N3/2864—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 comprising two or more insulation layers
    • 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
    • F01N3/2875—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration by using elastic means, e.g. spring leaves, for retaining catalyst body in the housing
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/34—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts
    • E04C2/3405—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts spaced apart by profiled spacer sheets
    • E04C2002/3444—Corrugated sheets
    • E04C2002/3466—Corrugated sheets with sinusoidal corrugations
    • 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
    • F01N2310/00—Selection of sound absorbing or insulating material
    • F01N2310/02—Mineral wool, e.g. glass wool, rock wool, asbestos or the like
    • 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

Definitions

  • the present invention relates to a blank of the type comprising two overlapping and spaced facings between which a core is interposed internal retained between the surfaces facing the two facings.
  • the invention further relates to an exhaust pipe in particular of motor vehicle delimited by an envelope comprising such a blank.
  • US-A-3,764,277 describes such a metal blank.
  • the core consisting of a wire mesh
  • This blank has a very significant drawback, namely that it does not does not lend itself to a stamping operation due to the rigid connection between the soul and the two facings.
  • such a blank cannot be used for manufacture parts of various shapes, in particular by stamping or rolling. In particular, such a blank is not suitable for the manufacture of pots exhaust.
  • the object of the invention is to provide a blank having a low mass, having, after forming, good mechanical rigidity and being able to be easily deformed, in particular by rolling or stamping, the blank having good sound insulation properties.
  • the invention relates to a blank of the aforementioned type, characterized in that the inner core is linked to a first facing in areas identified from the interface between the inner core and the first facing and in this that the second facing and the inner core are free to slide one by compared to each other.
  • the invention further relates to an exhaust pipe delimited by an envelope, characterized in that said envelope comprises at minus a blank as defined above.
  • the blank shown in Figure 1 has two facings 12, 14 superimposed and spaced between which an internal soul is interposed 16 retained between the facing surfaces 12A, 14A of the facings.
  • the two facings are formed for example by metal sheets identical having a thickness between 0.2 and 0.4 mm and notably equal to 0.3 mm.
  • these two sheets may be of thicknesses and / or of different compositions.
  • the core 16 is formed by a sheet having protruding parts and hollow. It is for example formed by a deployed sheet, that is to say a sheet perforated by parallel notches regularly distributed, forming a grid. This sheet is stretched laterally so that the sections metal separating the notches from the sheet are alternately deformed to form the protruding and recessed parts.
  • the vertices thereof are locally flattened.
  • the deployed sheet is re-rolled, so that it has a total thickness, after re-rolling, between the thicknesses of the raw expanded sheet and undeployed sheet.
  • the flattening of the vertices increases the contact surface between the projecting parts of the core and the surfaces of the facing surfaces in contact, thereby reducing the risk of creating permanent deformation of the facing in contact areas. These distortions are harmful since they give rise to vibration generating games causing noise pollution.
  • the increase in the total area of the surfaces in contact with the second facing 14 and core 16 provides vibration damping by friction.
  • the core 16 is formed by a wire mesh formed by example by woven metal wires.
  • the internal core 16 is linked to the first facing 12 in identified areas of the interface between the internal core and the first facing.
  • the second facing 14 and the internal core 16 are not not linked and are free to slide relative to each other. So the soul 16 can move relative to the inner surface 14A of the second facing.
  • the core 16 is welded to the surface 12A of the first facing along the tops 17 of the projecting parts of the core. So, the core is linked to the first facing 12 by welding points bearing reference 18.
  • the welds are carried out for example by pulses from of a wheel circulating on the blank.
  • the core 16 is linked to the first facing 12 following only certain identified areas.
  • the areas identified in which are carried out welds can extend along parallel lines. These areas are determined in particular as a function of subsequent deformations that the blank has to go through.
  • the blank is free of solder between the core and the first facing in the areas to be subjected to strong deformations.
  • the second facing 14 has a greater thickness to the first facing 12 to which the core 16 is welded.
  • the difference thickness is for example between 0.1 and 0.2 mm. So the blank 14 has for example a thickness of 0.4 mm while the blank 12 has a 0.2 mm thick. This difference in thickness avoids the problems of perforation and deformation of the free blank 14 by the core 16.
  • Figures 2 and 3 shows a rolled exhaust pipe and crimped 20.
  • the casing 22 of this exhaust pipe is delimited laterally by a sheet blank 24 similar to that of FIG. 1.
  • the blank is rolled to define a cylinder.
  • the exhaust pipe is closed at its two ends by end walls 26 crossed by pipes exhaust 28.
  • the facing 12 to which is linked the core 16 forms the interior surface of the exhaust.
  • the side edges facing the envelope are crimped and in particular stapled together on a longitudinal link 30 which is shown schematically in the drawing.
  • the rolling is carried out easily, the blank having a low rigidity in flexion.
  • the core 16 linked only to the interior facing 12 deforms without creating any constraints in its structure.
  • the envelope After stapling, the envelope forms a rigid structure, the blank having great rigidity depending on its thickness.
  • the core 16 is retained clamped between the two facings 12,14 so that it is immobilized, thus avoiding noise nuisance that may result from its vibration.
  • the facing outside 14 is kept outside the pot although it is not welded directly on the core 16.
  • the blank has a layer 40 of sound insulating material, interposed between the core 16 and the second facing 14.
  • This layer of insulating material is for example a layer of fibrous material in particular formed essentially of fibers ceramics.
  • the layer of fibrous material is neither bound to the core 16, nor to the exterior facing 14. The presence of this layer further reduces the noise emissions from the exhaust.
  • the muffler comprises two identical half-shells 50A, 50B each formed by a metal blank as shown in Figure 1.
  • the half-shells are stamped separately and then assembled.
  • Each half-shell has a substantially flat bottom 52A, 52B and a peripheral side wall 54A, 54B.
  • Each side wall 54A, 548 is extended by a peripheral edge 56A, 56B for connection extending outward.
  • the two half-shells are linked by welding along the overlapping edges 56A, 56B.
  • the core 16 is welded to the first facing 12 arranged inside.
  • the welded area extends only in the non-stamped or weakly stamped area of the blank, i.e. the bottom 52A, 52B.
  • the first facing 12 and the core 16 are free to slide relative to each other in the areas forming the side walls 54A, 54B and along the connecting edges 56A, 56B.
  • the independence of the core 16 and the two facings facilitates stamping.
  • the flanges link 56A, 56B are secured over the entire periphery of the pot, which guarantees stiffening of the entire structure.
  • Figure 6 is shown schematically a blank 60 intended to the production of a stamped silencer such as that of FIG. 5 in which the two half-shells are linked by crimping.
  • the blank 60 of rectangular shape is devoid of core in the peripheral crimping zones denoted 62A, 62B, 62C, 62D. These zones extend along bands bordering the blank. The side edges of the blank therefore only have the two facings superimposed.
  • the core is not welded to one of the facings than in the central part of the blank, denoted 64 and whose limit is shown in dotted lines in Figure 6.
  • the areas of connection of the blank (s) may include the intermediate core 16 or in be lacking.
  • the core is kept in the areas of bond, as shown in Figure 5.
  • Such a structure is particularly suitable in the case of welding by addition of metal, as is done in the case of exhaust pipes catalytic purification.
  • the crimping zones can advantageously be devoid of core in order to facilitate the deformation thereof.
  • the interior facing is welded to the core 16 while the outer facing is free to move relative to this one.
  • This structure is particularly advantageous since it gives significant rigidity to the inner part of the pot exhaust which is in contact with gases subject to sudden variations pressure which may cause noise pollution.
  • the exhaust pipe may include one or several blanks as described here, the facing welded to the core being oriented towards the outside of the exhaust.
  • An exhaust pipe as described here can be used as volume comprising a catalyst or as exhaust silencer.
  • the core can be glued to one of the facings instead to be welded.

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)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Exhaust Silencers (AREA)
EP19980401050 1997-04-30 1998-04-29 Metallstruktur, bestehend aus zwei Verkleidungen und eine inneren Verstärkung, und diese enthaltende Auspufftopf Expired - Lifetime EP0884429B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9705417 1997-04-30
FR9705417A FR2762874B1 (fr) 1997-04-30 1997-04-30 Flan comportant deux parements et une ame interne et pot d'echappement le comportant

Publications (2)

Publication Number Publication Date
EP0884429A1 true EP0884429A1 (de) 1998-12-16
EP0884429B1 EP0884429B1 (de) 2003-06-18

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19980401050 Expired - Lifetime EP0884429B1 (de) 1997-04-30 1998-04-29 Metallstruktur, bestehend aus zwei Verkleidungen und eine inneren Verstärkung, und diese enthaltende Auspufftopf

Country Status (3)

Country Link
EP (1) EP0884429B1 (de)
DE (1) DE69815597T2 (de)
FR (1) FR2762874B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2883033A1 (fr) * 2005-03-11 2006-09-15 Faurecia Sys Echappement Conduite et notamment collecteur d'echappement a double paroi
CN113561497A (zh) * 2021-06-28 2021-10-29 哈尔滨工业大学（威海） 一种表面编织的金属材料与frp复合材料一体化连接方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0145577A2 (de) * 1983-12-12 1985-06-19 Hugues Lesourd Tiefziehfähiger, sandwichartig aufgebauter Metallgegenstand, Verfahren und Vorrichtung zu seiner Herstellung
FR2556651A2 (fr) * 1983-12-20 1985-06-21 Lesourd Hugues Structure sandwich et son procede de fabrication
GB2256006A (en) * 1991-05-21 1992-11-25 Harbury Holdings Inc Exhaust silencer.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0145577A2 (de) * 1983-12-12 1985-06-19 Hugues Lesourd Tiefziehfähiger, sandwichartig aufgebauter Metallgegenstand, Verfahren und Vorrichtung zu seiner Herstellung
FR2556651A2 (fr) * 1983-12-20 1985-06-21 Lesourd Hugues Structure sandwich et son procede de fabrication
GB2256006A (en) * 1991-05-21 1992-11-25 Harbury Holdings Inc Exhaust silencer.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2883033A1 (fr) * 2005-03-11 2006-09-15 Faurecia Sys Echappement Conduite et notamment collecteur d'echappement a double paroi
CN113561497A (zh) * 2021-06-28 2021-10-29 哈尔滨工业大学（威海） 一种表面编织的金属材料与frp复合材料一体化连接方法

Also Published As

Publication number Publication date
DE69815597D1 (de) 2003-07-24
DE69815597T2 (de) 2004-05-13
FR2762874B1 (fr) 1999-07-16
FR2762874A1 (fr) 1998-11-06
EP0884429B1 (de) 2003-06-18

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