EP1143123B1 - Auspuff mit durchquerendem Rohr und sein Herstellungsverfahren - Google Patents

Auspuff mit durchquerendem Rohr und sein Herstellungsverfahren Download PDF

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Publication number
EP1143123B1
EP1143123B1 EP20010400813 EP01400813A EP1143123B1 EP 1143123 B1 EP1143123 B1 EP 1143123B1 EP 20010400813 EP20010400813 EP 20010400813 EP 01400813 A EP01400813 A EP 01400813A EP 1143123 B1 EP1143123 B1 EP 1143123B1
Authority
EP
European Patent Office
Prior art keywords
tube
barrel
cannula
crimping
wall
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
EP20010400813
Other languages
English (en)
French (fr)
Other versions
EP1143123A1 (de
Inventor
Alain Tournier
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.)
Faurecia Systemes dEchappement SAS
Original Assignee
Faurecia Systemes dEchappement SAS
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Filing date
Publication date
Application filed by Faurecia Systemes dEchappement SAS filed Critical Faurecia Systemes dEchappement SAS
Publication of EP1143123A1 publication Critical patent/EP1143123A1/de
Application granted granted Critical
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Anticipated expiration legal-status Critical
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/06—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes in openings, e.g. rolling-in

Definitions

  • the present invention relates to an exhaust volume, of the type comprising a transverse wall provided with an orifice and a through tube said wall through said orifice, the wall and the tube being linked to each other, according to the preamble of claim 1 and the process for its manufacture.
  • An example such an exhaust volume is known of document FR-A-2 173 458.
  • Such exhaust volumes in particular constitute silencers exhaust reducing noise pollution from traffic exhaust gases, or enclosures in which are housed catalytic purification elements or particle filters.
  • the exhaust volumes generally have a side wall substantially cylindrical closed at each end by a wall transverse end.
  • the transverse wall is for example crimped at its periphery to the side wall.
  • the transverse walls end are crossed by gas supply pipes exhaust.
  • the end wall is crossed by a tube exhaust extending mainly within the exhaust volume and extending beyond the wall outside the volume.
  • a outlet cannula is sometimes crimped at the end of the tube to further extend this outside the exhaust volume.
  • a connecting sleeve surrounding the tube in the region of the transverse wall.
  • This sleeve is tightened on the tube and it presents, on either side of the wall, flanges between which is clamped Wall.
  • These flanges are formed by deformation of the sleeve, and in particular by axial crushing thereof in order to form peripheral folds delimiting flanges extending radially outwards and enclosing the transverse wall.
  • the object of the invention is to provide an exhaust volume, of which the manufacturing cost is reduced, in particular as regards the connection between a transverse wall and a tube passing through it.
  • the invention relates to an exhaust volume, of the type above, characterized in that the cannula is crimped outside the barrel.
  • FIG. 1 an end portion of a silencer exhaust 10 made entirely of metal.
  • Muffler 10 has a substantially cylindrical side wall 12 closed at one end by a transverse wall 14. The latter is commonly designated by the expression "end cup”.
  • the side wall 10 is connected at its end at the periphery of the end wall 14. These are assembled one to the other by a crimping 16 obtained by concentric winding of the ends sheets.
  • the wall 14 is crossed by an outlet tube 16.
  • the tube 16 comprises an internal section 16A extending inside the enclosure denoted 17 delimited by the exhaust silencer and an external section 16B extending the tube outside this enclosure.
  • the section 16B has a length between 10 and 40 mm and for example equal to about 27 mm.
  • the tube 16 passes through the transverse wall 14 through an opening 18 substantially circular.
  • the opening 18 is delimited by a barrel 20 obtained by stretching outwards the material constituting the transverse wall 14 in the border region of the opening 18.
  • the barrel 20 has a length between 10 and 30 mm and preferably of the order of 20 mm.
  • a cannula 22 is secured to the tube 16 and to the barrel 20.
  • the cannula 22 extends completely outside the enclosure 17 and extends axially the tube 16. It surrounds the barrel 20 over most of its length.
  • the tube 16 has an end section denoted 16C and extending on either side of the transverse wall 14 a diameter very slightly greater than the diameter of its current part. Furthermore, and as illustrated in Figures 1 and 2, the tube 16, the barrel 20 and the end of the cannula outlet 22 are crimped together to ensure their mechanical connection. This crimping is carried out by shrinking the three concentric surfaces. It is made in a transverse plane of the barrel 20 designated by crimping plane main.
  • the constriction noted 23 leads to a centripetal peripheral deformation the tube 16, the barrel 20 and the end of the cannula 22.
  • channels concentric peripherals, resulting from an inward curving, are created around these three elements. These channels have a cross section substantially in the shape of a circular arc.
  • the cannula 22 has, along its length, two folds 24 diametrically opposite resulting from the creep of the material forming the cannula when shrinking.
  • the cannula 22 and the tube 16 are also crimped on one another according to another constriction 26 extending in a plane parallel to the crimping plane main tube, barrel and cannula.
  • the two crimping plans are axially spaced by an interval, having a length for example equal to 12 mm.
  • the crimp 26 is adapted to ensure centripetal deformation from the end of the tube 16 and the outlet cannula 22. This constriction thus forms, at the periphery of the tube and cannula, concentric channels resulting inward curving. These channels have an arcuate section of circle.
  • two jaws each delimiting an imprint semi-cylindrical and each comprising two projections 32, 34 semi-cylindrical axially spaced are applied around the cannula 22.
  • the projections 32 and 34 have a section substantially in an arc.
  • the constrictions 23 and 26 are carried out during the same step of crimping.
  • the tube 16 and the cannula 22 being linked, during the same operation, with the barrel 20, the placement of the outlet cannula 22 is carried out without significant additional cost, the same operation ensuring several connections.

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

Claims (7)

  1. Auspuffvolumen mit einer Querwand (14), die mit einer Öffnung (18) versehen ist, und einem Rohr (16), welches die Wand durch die Öffnung (18) hindurch durchquert, wobei die Wand (14) und das Rohr (16) miteinander verbunden sind, wobei die Wand (14) um die Öffnung (18) herum ein durch Streckziehen des Materials der Wand (14) erhaltenes Ausstoßrohr (20) aufweist, wobei das Ausstoßrohr (20) und das Rohr (16) entlang ihres Umfangs in einer quer liegenden Ebene des Ausstoßrohrs (20) aufeinander aufgequetscht sind, und wobei das Auspuffvolumen eine Hohlnadel (22) aufweist, welche das Rohr (16) auf der Seite der Querwand (14), aus welcher das Ausstoßrohr (20) hervortritt, verlängert, wobei die Hohlnadel (22) und das Ausstoßrohr (20) entlang der Quetschverbindungsebene des Rohrs (16) und des Ausstoßrohrs (20) aufeinander aufgequetscht sind, dadurch gekennzeichnet; dass die Hohlnadel (22) außen auf das Ausstoßrohr (20) aufgequetscht ist.
  2. Auspuffvolumen gemäß Anspruch 1, dadurch gekennzeichnet, dass die Quetschverbindung des Ausstoßrohrs (20) und des Rohrs (16) von einer konzentrischen Einschnürung des Ausstoßrohrs (20) und des Rohrs (16) gebildet ist.
  3. Auspuffvolumen gemäß irgendeinem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die Querwand (14) eine Endwand ist, und dass sich das Ausstoßrohr (20) außerhalb der von dem Auspuffvolumen definierten Einfassung erstreckt.
  4. Auspuffvolumen gemäß irgendeinem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die Hohlnadel (22) seitlich in der Quetschverbindungsebene der Hohlnadel (22) und des Ausstoßrohrs (20) zwei diametral einander gegenüberliegende Falten (24) aufweist.
  5. Auspuffvolumen gemäß irgendeinem der vorherigen Ansprüche, dadurch gekennzeichnet, dass das Rohr (16) und die Hohlnadel (22) in einer quer zu dem Rohr (16) liegenden Ebene aufeinander aufgequetscht sind, wobei die Querebene entlang der Länge des Rohrs (16) bezüglich der Quetschverbindungsebene des Rohrs (16) und des Ausstoßrohrs (20) versetzt angeordnet ist.
  6. Verfahren zur Herstellung eines Auspuffvolumens gemäß irgendeinem der vorherigen Ansprüche, dadurch gekennzeichnet, dass es die Schritte umfasst, die daraus bestehen:
    a) eine mit einer Öffnung versehene Querwand zu bilden;
    b) das Material der Querwand um die Öffnung herum herauszuziehen, um ein Ausstoßrohr (20) auszubilden;
    c) ein Rohr (16) in das Ausstoßrohr (20) einzuführen; und
    d) das Ausstoßrohr (20) und das Rohr (16) miteinander durch Aufquetschen zu verbinden,
    und dadurch, dass es außerdem einen Schritt der Anordnung einer das Rohr (16) verlängernden Hohlnadel (22) und einen Schritt des Aufquetschens der Hohlnadel (22) auf das Ausstoßrohr (20) umfasst, wobei die Hohlnadel (22) außerhalb des Ausstoßrohrs (20) angeordnet ist,
    und dadurch, dass das Aufquetschen der Hohlnadel (22) auf das Ausstoßrohr (20) gleichzeitig mit dem Aufquetschen des Ausstoßrohrs (20) auf das Rohr (16) geschieht.
  7. Verfahren gemäß Anspruch 6 zur Herstellung eines Auspuffvolumens gemäß Anspruch 5, dadurch gekennzeichnet, dass es außerdem einen Schritt der Anordnung einer das Rohr (16) verlängernden Hohlnadel (22) und einen Schritt des Aufquetschens der Hohlnadel (22) auf das Rohr (16) umfasst,
    und dadurch, dass das Aufquetschen der Hohlnadel (22) auf das Rohr (16) gleichzeitig mit dem Aufquetschen des Ausstoßrohrs (20) auf das Rohr (16) geschieht.
EP20010400813 2000-04-05 2001-03-29 Auspuff mit durchquerendem Rohr und sein Herstellungsverfahren Expired - Lifetime EP1143123B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0004353A FR2807352B1 (fr) 2000-04-05 2000-04-05 Volume d'echappement comportant un tube traversant et procede pour sa fabrication
FR0004353 2000-04-05

Publications (2)

Publication Number Publication Date
EP1143123A1 EP1143123A1 (de) 2001-10-10
EP1143123B1 true EP1143123B1 (de) 2004-05-26

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20010400813 Expired - Lifetime EP1143123B1 (de) 2000-04-05 2001-03-29 Auspuff mit durchquerendem Rohr und sein Herstellungsverfahren

Country Status (3)

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EP (1) EP1143123B1 (de)
DE (1) DE60103444T2 (de)
FR (1) FR2807352B1 (de)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1214989A (en) * 1967-10-05 1970-12-09 Quinton Hazell Silencers Ltd Improvements relating to exhaust gas silencers for internal combustion engines
FR2173458A5 (de) * 1972-02-25 1973-10-05 Peugeot
IT8122698V0 (it) * 1981-08-20 1981-08-20 Iao Industrie Riunite Spa Silenziatore perfezionato con attacco senza saldatura dei cappellotti e dei tubi di scarico.
JPS60174223A (ja) * 1983-10-22 1985-09-07 Sankei Giken Kogyo Kk 消音器等の板材と管材の固着結合方法

Also Published As

Publication number Publication date
FR2807352A1 (fr) 2001-10-12
EP1143123A1 (de) 2001-10-10
DE60103444D1 (de) 2004-07-01
DE60103444T2 (de) 2005-09-01
FR2807352B1 (fr) 2002-08-02

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