EP1325216A2 - Ensemble silencieux pour vehicules a moteur a caracteristique variable d'amortissement des bruits - Google Patents

Ensemble silencieux pour vehicules a moteur a caracteristique variable d'amortissement des bruits

Info

Publication number
EP1325216A2
EP1325216A2 EP01985739A EP01985739A EP1325216A2 EP 1325216 A2 EP1325216 A2 EP 1325216A2 EP 01985739 A EP01985739 A EP 01985739A EP 01985739 A EP01985739 A EP 01985739A EP 1325216 A2 EP1325216 A2 EP 1325216A2
Authority
EP
European Patent Office
Prior art keywords
housing
filling
muffler
cavity
muffler body
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
EP01985739A
Other languages
German (de)
English (en)
Other versions
EP1325216B1 (fr
Inventor
Jürgen Hübschen
Klaus Hoffmann
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 EP1325216A2 publication Critical patent/EP1325216A2/fr
Application granted granted Critical
Publication of EP1325216B1 publication Critical patent/EP1325216B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • 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
    • 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
    • F01N2450/06—Inserting sound absorbing material into a chamber
    • 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
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • F01N2470/16—Plurality of inlet tubes, e.g. discharging into different chambers

Definitions

  • the invention relates to a method for producing an absorption muffler for motor vehicles in half-shell or jacket construction.
  • a housing and an inner muffler body arranged in the housing such as pipes, connecting pieces, partitions, etc.
  • at least one cavity of the absorption muffler is filled with sound absorbing material in the form of glass wool or the like, as well as an absorption silencer manufactured according to this in half-shell or jacket construction.
  • the metal parts of the muffler are completely prefabricated and the muffling material is subsequently introduced through filler openings in the prefabricated muffler.
  • the silencer can be provided in a wrap-around construction or in a half-shell construction.
  • the filling openings are located in the jacket or on the front of the silencer.
  • a glass fiber bundle as an endless strand is blown into a desired cavity of the muffler as a cavity filling through the filling openings by means of a probe or the like. After filling, the filling openings are closed again to form a silencer housing which is sealed off from the outside.
  • the object of the invention to provide a simplified process for producing an absorption silencer is to provide by simple means available 'and to provide a muffler in accordance with a simple manner.
  • the object is achieved by a production method of the type specified in claim 1.
  • An absorption manufactured by the method according to the invention tion silencer is characterized by the features of claim 13.
  • the muffler is advantageously developed by the features of claims 14 to 21.
  • the essence of the method according to the invention for producing an absorption muffler of the type mentioned at the outset is that the muffler body is completely prefabricated without a housing and is assembled in a dimensionally stable manner, that the dimensionally stable muffler body is wrapped with a flexible auxiliary wall as a housing replacement, at least partially, leaving the passage of the connecting piece free or at least partially is wrapped, and that through an opening in the flexible auxiliary wall by means of a filling lance or a filling pipe, unpacked soundproofing material is introduced into the cavity as a cavity filling before the prefabricated housing or at least a last housing part of the absorption muffler around the muffler body including the cavity -Filling is arranged.
  • a film preferably made of plastic, is wrapped around the muffler body at least in one position with an overlap, and the film wound around the muffler body is pierced by means of a filling lance for the purpose of filling the cavity with soundproofing materials. After filling the cavity, the filling lance is removed again.
  • the silencer body including the wrapped film, is preferably introduced into a lower housing half in the form of a lower half-shell of a half-shell muffler, in particular in a form-fitting manner, before the filling lance is set and the cavity is filled, and it is carried out after cavity filling and after Removing the input Filling lance, the upper half of the housing in the form of an upper half-shell, preferably positively placed on the lower half-shell.
  • the upper and lower half-shells are then connected to one another, in particular laser-welded along the connection point or connected by means of an envelope fold.
  • the silencer body including cavity filling, but without wrapped foil can be axially inserted into a circumferentially closed, cross-sectionally oval or circular casing housing of a casing silencer.
  • the axial insertion is expediently carried out in a press fit, the wrapped film being peeled off through the front side of the casing from the muffler body and the cavity filling during insertion.
  • a sheet metal plate with at least one passage opening can be wound around the silencer body in a position with an overlap and fastened, preferably braced by means of a tension ring.
  • the filling lance or the filling tube is inserted into the cavity through the through opening, and the cavity filling is then introduced.
  • the silencer body including the cavity filling is inserted into an axially aligned, prefabricated, circumferentially closed, cross-sectionally oval or circular casing housing of a casing silencer.
  • the hollow, already wound sheet metal plate is preferably used for filling the hollow space of another, similarly constructed silencer body.
  • the hollow, already wound sheet metal plate can expediently be loosened in a slightly widening manner in the circumferential bracing, before the identically constructed muffler body is axially inserted into the wound sheet metal plate and braced again on the circumference before a cavity filling.
  • a one-piece or multi-piece cubic negative form of a jacket housing of the absorption muffler with at least one through opening can be used, which is equipped with a muffler body, whereby after an arrangement of the negative form around the muffler body by the Through opening (s) of the negative form, the filling lance or the filling tube is inserted for the purpose of filling the cavity with soundproofing material and is removed again after filling.
  • the aforementioned muffler body is pushed out of the negative form into an axially aligned jacket housing which is closed on the circumference.
  • the negative form can be removed or disassembled from the muffler body and the muffler body including the cavity filling can be exposed and wrapped with a sheet metal plate as the casing shell.
  • the wrapped sheet metal plate is then preferably welded along the longitudinal connection point by means of a laser or provided with a longitudinal fold.
  • An absorption muffler for motor vehicles manufactured as above, in a half-shell or jacket construction, with a housing and an inner muffler body arranged in the housing, such as pipes, connecting pieces, partitions, etc., and with at least one filled cavity of the absorption Muffler with silencing material in the form of glass wool or the like, is characterized by a complete without housing; Prefabricated, dimensionally stable muffler body, which is wrapped or encased with a flexible housing auxiliary wall, at least leaving the passage of the connecting piece free, and which has at least one cavity between the muffler body and the housing auxiliary wall with unpackaged soundproofing material which can be introduced through the housing auxiliary wall.
  • the outside of the auxiliary housing wall is supported by the housing of the silencer.
  • the housing auxiliary wall can be replaced by the housing of the muffler or can be removed after the cavity has been filled with glass fiber or the like and can be replaced by the actual housing.
  • the housing auxiliary wall used is preferably a plastic film, a windable sheet metal plate or a cubic one or more piece negative form of a casing housing.
  • the housing itself preferably consists of two half-shells if the absorption muffler is designed as a half-shell muffler.
  • the housing preferably consists of a tubular jacket which is oval or circular in cross-section, seamless, one-piece, manufactured using the deep-drawing process or of a tubular jacket which is oval or circular in cross-section, the longitudinal connection point of which is welded or provided with a longitudinal rabbet.
  • the invention is therefore in contrast to the prior art a special housing auxiliary wall, which serves to define the outer contour of a silencer before the actual outer housing of the silencer is fully or partially assembled in order to blow soundproofing material, in particular a glass fiber bundle as an endless strand, with or without pressure into the cavity and / or with Suck in vacuum.
  • the auxiliary housing wall can simply be pierced by lance or the like to create a passage opening at almost any point or be provided with through holes beforehand, which, which is a particular advantage of the invention, does not have to be closed again after filling. This eliminates the need to subsequently close the filler openings according to the prior art.
  • Such a manufacturing process saves manufacturing time, which is associated with cost advantages.
  • Lances used to create filling openings are also filling tubes or filling nozzles. A corresponding chamber or a filled cavity is simultaneously vented when it is blown in.
  • the invention allows silencers to be filled with glass fiber in automatic mode.
  • FIG. 1 shows a muffler body of an absorption muffler in half-shell construction in a perspective view
  • FIG. 2 the muffler body according to FIG. 1 with a wrapped film
  • FIG. 3 shows the muffler body according to FIG. 2 wrapped in foil, inserted in a lower half-shell and with a filling lance attached
  • FIG. 4 shows a muffler body according to FIG. 3 with an attached upper half-shell
  • FIG. 5 shows a muffler body of an absorption muffler in a jacket construction in a perspective view similar to FIG. 1,
  • FIG. 6 the muffler body according to FIG. 5 with a wrapped film
  • FIG. 7 the muffler body according to FIG. 6 with the filling lance attached
  • FIG. 8 shows the muffler body according to FIG. 7 after the filling lance has been removed and the jacket housing has been axially pushed on
  • FIG. 9 shows the muffler body according to FIG. 5 with a wrapped sheet metal plate
  • FIG. 10 shows the muffler body according to FIG. 9 with a wrapped housing jacket.
  • an absorption muffler in half-shell construction comprises an inner muffler body 2, which is housed in a form-fitting manner in a two-part housing 1.
  • the muffler body 2 has individual parts of no further interest here, in the exemplary embodiment in FIG. 1, tubes 3, end connection pieces 4, partitions 5, etc.
  • the two-part housing 1 comprises a lower half-shell 9 and an upper half-shell 10. Both half-shells 9, 10 are laser-welded along the half-shell parting plane or along the connection point 11.
  • the absorption muffler has a cavity in front of the front partition 5 according to FIG. 1 with a sound-absorbing material 6, which is introduced into the cavity in a special way.
  • the soundproofing material 6 is unpacked before being introduced into the cavity and is in particular a glass fiber bundle in the form of an endless strand which is blown into the cavity with a blowing machine (not shown).
  • the absorption muffler for motor vehicles in half-shell construction according to Figures 1 to 4 is manufactured as follows.
  • the muffler body 2 is completely prefabricated and assembled in a dimensionally stable manner according to FIG.
  • the housing auxiliary wall is in particular a flexible film 7 made of plastic, which is wound at least in one position with an overlap around the muffler body 2.
  • the overlap of the film 7 is self-adhesive or at least creates a provisional, self-adhesive peripheral connection.
  • the muffler body 2 together with the wrapped film 7 in a lower housing half in the form of a lower half-shell 9 of the half-shell muffler is positively inserted and then a filling lance 8 is used in the place of the cavity filling to be carried out. Then, by axially moving the filling lance 8 downward, the film 7 is pierced and the lower tip of the filling lance is arranged in the cavity to be filled.
  • the filling lance blows the aforementioned sound damping material 6 into an endless strand, in such a way that the entire cavity located in front of the front partition 5 according to FIG. 1, which is delimited on the outside by the wrapped film 7, is filled and packed with sound damping material 6.
  • the wrapped film 7 and the cavity to be filled are stabilized by the lower half-shell 9.
  • the upper housing half in the form of an upper half-shell 10 is positively placed on the lower half-shell 9, and the upper and lower half-shells 10 and 9 are laser-welded to one another.
  • a cavity of an absorption muffler is thus filled up with silencing material 6 in a simple manner, without filling openings having to be closed again in an additional process step, as is the case in the prior art.
  • a muffler body 2 of a muffler muffler can also be provided with a cavity filling with the aid of a housing auxiliary wall, as shown in FIGS. 5 to 8.
  • the prefabricated, inner, dimensionally stable muffler body 2 according to FIG. 5 is in this case wrapped with a film 7 according to FIG. 6 in the manner of the first embodiment, then the filling lance 8 according to FIG. 8 is set, then the film 7 is pierced and then the soundproofing material 6 in the cavity filled. Then, after removing the filling lance 8, the silencer body 2 including the cavity Filling, but without wrapped film 7, axially inserted into a closed shell, which is oval in cross section, of a shell muffler. The axial insertion takes place in a press fit such that the wrapped film 7 according to FIG. 7 is peeled off through the end face 13 of the casing 12 from the muffler body 2 and the cavity filling during insertion. If necessary, the axial ends of the casing 12 according to FIG. 8 can also be trimmed, in particular shortened.
  • a windable sheet metal plate 14 with at least one through opening 15 according to FIG. 9 can also be used in the case of a muffler, the muffler body 2 then being wound, for example according to FIG. 5, in a position with overlap 17 and the wrapped sheet metal plate 14 in circumference ngsrie device is attached, preferably clamped by means of a clamping ring.
  • the filler lance 8 or a filler pipe without a sharp tip is then inserted into the cavity through the through opening 15 and the cavity filling is then introduced.
  • the silencer body 2 After filling the cavity and removing the filling lance 8 or the filling tube, the silencer body 2, including filling the cavity, is then inserted into an axially aligned, prefabricated, circumferentially closed, cross-sectionally oval jacket housing 12 of a jacket silencer according to FIG. 8 ,
  • the hollow, already wound sheet metal plate 14 can be used further for cavity filling of a further, similarly constructed silencer body 2.
  • the hollow, already wound sheet metal plate 14 can be loosened in a slightly widening manner in the circumferential bracing, before the silencer body of the same structure is inserted axially into the wound sheet metal plate 14 and braced again on the circumference before a cavity filling.
  • a one-piece or multi-piece cubic negative shape of a casing 12 of the absorption muffler with at least one through opening 15 is also considered, which is equipped with a muffler body 2, whereby after arranging the negative shape around the muffler body 2 through the through opening (s ) of the negative form, the filling lance 8 or the filling tube for filling the cavity with soundproofing material 6 and. is removed again after filling.
  • the silencer body 2 After filling the cavity, the silencer body 2 is pushed out of the closed negative form into an axially aligned, circumferentially closed casing housing 12.
  • the negative form can also be removed or dismantled from the muffler body 2, and then the muffler body together with the void filling is wrapped with a sheet metal plate 18 as the casing and then the wrapped sheet metal plate 18 along the longitudinal connecting parts 19 according to FIG 10 are preferably welded by laser or provided with a longitudinal fold.
  • An absorption muffler for motor vehicles in half-shell or jacket construction thus provides in particular a completely prefabricated, dimensionally stable muffler body 2 with a flexible wrapped auxiliary wall at least leaving the passage of the connecting piece 4 free, with at least one cavity between the muffler body 2 and the housing - Auxiliary wall with unpacked sound that can be inserted through the auxiliary housing wall - damping material 6 is filled.
  • the outside of the housing auxiliary wall can be supported by the housing 1 of the silencer, i.e. in the end product of the silencer, the auxiliary housing wall may be provided in addition to the actual housing 1.
  • auxiliary housing wall can also be replaced, in particular peeled, by the housing 1 of the muffler.
  • the housing auxiliary wall is a flexible film 7, a windable sheet metal plate 14 or a cubic, one-piece or multi-piece negative form of a casing housing 12 of a casing silencer.
  • the housing of a half-shell muffler can consist of two half-shells 9, 10.
  • the casing of a muffler can be an oval or circular, seamless, one-piece tubular jacket manufactured by the deep-drawing process, or a tubular jacket with an oval or circular cross-section, the longitudinal connection point of which is welded or provided with a longitudinal fold.

Landscapes

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

Abstract

Procédé de fabrication d'un silencieux à absorption pour véhicules à moteur, à structure semi-monocoque ou d'enveloppe. Ledit silencieux comporte un boîtier (1) et un corps (2) de silencieux placé à l'intérieur du boîtier et composé de conduites (3), de raccords (4), de parois de séparation (5), etc., au moins un espace creux dudit silencieux étant rempli d'une matière d'amortissement des bruits (6) sous forme de laine de verre ou analogue. Selon ledit procédé, le corps (2) de silencieux est préfabriqué complètement sans boîtier et assemblé de manière indéformable. Le corps (2) de silencieux assemblé de manière indéformable est enveloppé ou gainé d'une paroi auxiliaire souple, en particulier d'une feuille (7), en tant que remplacement du boîtier, les passages des raccords (4) étant laissés libres. De la matière d'amortissement des bruits (6) en vrac est alors introduite en tant que matière de remplissage dans l'espace creux à l'aide d'une lance de remplissage (8) ou d'un tuyau de remplissage par une ouverture ménagée dans la paroi auxiliaire souple, avant que le boîtier préfabriqué (1) ou au moins une dernière partie de boîtier ne soit installé autour du corps (2) de silencieux, y compris autour de la matière de remplissage de l'espace creux.
EP01985739A 2000-09-28 2001-09-26 Procede de fabrication d'un silencieux a absorption pour vehicules motorises et silencieux a absorption Expired - Lifetime EP1325216B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10048118 2000-09-28
DE10048118A DE10048118A1 (de) 2000-09-28 2000-09-28 Verfahren zur Herstellung eines Absorptions-Schalldämpfers für Kraftfahrzeuge sowie Absorptions-Schalldämpfer
PCT/EP2001/011108 WO2002027159A2 (fr) 2000-09-28 2001-09-26 Ensemble silencieux pour vehicules a moteur a caracteristique variable d'amortissement des bruits

Publications (2)

Publication Number Publication Date
EP1325216A2 true EP1325216A2 (fr) 2003-07-09
EP1325216B1 EP1325216B1 (fr) 2004-07-14

Family

ID=7657991

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01985739A Expired - Lifetime EP1325216B1 (fr) 2000-09-28 2001-09-26 Procede de fabrication d'un silencieux a absorption pour vehicules motorises et silencieux a absorption

Country Status (5)

Country Link
EP (1) EP1325216B1 (fr)
AU (1) AU2002215903A1 (fr)
DE (2) DE10048118A1 (fr)
ES (1) ES2223937T3 (fr)
WO (1) WO2002027159A2 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10228246A1 (de) 2002-06-25 2004-01-15 Behr Gmbh & Co. Abgaswärmeübertrager und Verfahren zu seiner Herstellung
DE102004039776A1 (de) * 2004-08-16 2006-03-09 J. Eberspächer GmbH & Co. KG Schalldämpfer sowie zugehöriges Herstellungsverfahren
WO2006133078A1 (fr) * 2005-06-06 2006-12-14 Ingersoll-Rand Company Ensemble silencieux d'admission d'air
DE102009018957A1 (de) * 2009-04-25 2010-10-28 J. Eberspächer GmbH & Co. KG Schalldämpfer für eine Abgasanlage
CN103925053A (zh) * 2013-01-14 2014-07-16 三河三友汽车部件有限公司 车用消音器的制造方法
JP6056781B2 (ja) * 2013-04-10 2017-01-11 トヨタ自動車株式会社 マフラー製造方法及びマフラー

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3476241D1 (en) * 1983-11-18 1989-02-23 Tba Industrial Products Ltd Glass fibre products
DE3826707A1 (de) * 1988-08-05 1990-02-08 Gruenzweig & Hartmann Verfahren zum herstellen eines abgas-schalldaempfers
US6094817A (en) * 1998-10-15 2000-08-01 Acoust-A-Fiber Research And Development, Inc. Method for filling a silencer with sound insulating material

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0227159A2 *

Also Published As

Publication number Publication date
WO2002027159A3 (fr) 2002-06-06
DE10048118A1 (de) 2002-04-11
ES2223937T3 (es) 2005-03-01
DE50102866D1 (de) 2004-08-19
WO2002027159A2 (fr) 2002-04-04
AU2002215903A1 (en) 2002-04-08
EP1325216B1 (fr) 2004-07-14

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