EP0337877B1 - Schalldämpfer für Explosionsmotoren - Google Patents

Schalldämpfer für Explosionsmotoren Download PDF

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Publication number
EP0337877B1
EP0337877B1 EP19890400996 EP89400996A EP0337877B1 EP 0337877 B1 EP0337877 B1 EP 0337877B1 EP 19890400996 EP19890400996 EP 19890400996 EP 89400996 A EP89400996 A EP 89400996A EP 0337877 B1 EP0337877 B1 EP 0337877B1
Authority
EP
European Patent Office
Prior art keywords
shells
silencer
internal
silencer according
composite material
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
EP19890400996
Other languages
English (en)
French (fr)
Other versions
EP0337877A1 (de
Inventor
Pierre Roubinet
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.)
Renault SA
Original Assignee
Regie Nationale des Usines Renault
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 Regie Nationale des Usines Renault filed Critical Regie Nationale des Usines Renault
Publication of EP0337877A1 publication Critical patent/EP0337877A1/de
Application granted granted Critical
Publication of EP0337877B1 publication Critical patent/EP0337877B1/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
    • 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
    • F01N13/1877—Construction facilitating manufacture, assembly, or disassembly the assembly using stamp-formed parts or otherwise deformed sheet-metal the channels or tubes thereof being made integrally with 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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features
    • F01N13/009—Exhaust or silencing apparatus characterised by constructional features having two or more separate purifying devices arranged in series
    • F01N13/0097—Exhaust or silencing apparatus characterised by constructional features having two or more separate purifying devices arranged in series the purifying devices are arranged in a single 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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features
    • 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
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1861—Construction facilitating manufacture, assembly, or disassembly the assembly using parts formed by casting or moulding
    • 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
    • F01N13/14—Exhaust or silencing apparatus characterised by constructional features having thermal insulation
    • 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
    • F01N2450/24—Methods or apparatus for fitting, inserting or repairing different elements by bolts, screws, rivets 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
    • F01N2450/30—Removable or rechangeable blocks or cartridges, e.g. for filters
    • 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 exhaust gas passages, pipes or tubes
    • F01N2470/02—Tubes being perforated
    • 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
    • F01N2530/00—Selection of materials for tubes, chambers or housings
    • F01N2530/18—Plastics material, e.g. polyester resin
    • F01N2530/20—Plastics material, e.g. polyester resin reinforced with mineral or metallic fibres
    • 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
    • F01N2530/00—Selection of materials for tubes, chambers or housings
    • F01N2530/26—Multi-layered walls

Definitions

  • the present invention relates to a silencer for an internal combustion engine consisting of an internal gas channeling circuit housed in an outer casing.
  • silencers are made of sheet steel and undergo internal (acid condensates) and external (water, mud and salt spray) corrosion.
  • the present invention aims to overcome these drawbacks by referring to a new design of exhaust silencers and the development of new composite materials having good heat resistance.
  • the design of the silencer provides good thermal insulation so that the temperature of the enclosure remains limited.
  • the design of the enclosure provides good thermal insulation which allows the internal circuit to rise faster and higher in temperature (therefore less condensate) and good soundproofing.
  • the silencer according to the invention is characterized in that the gas pipe is integral on the one hand with two insulating flanges made of refractory material placed at the two ends of the pipe, said flanges being intended to engage directly in defined suitable grooves in the half-shells and on the other hand of vertical partitions which rest on the half-shells with the interposition of insulating glues made of refractory material.
  • the half-shells may have cooling ribs on the outside.
  • the silencer has an internal gas circuit consisting of a metal tube 1 forming a baffle and two partitions 2. This circuit is made of steel protected against internal corrosion. It is integral with two insulating flanges 3 made of refractory material placed on the two ends of the tube 1.
  • This circuit is wrapped in an external envelope formed by two half-shells 4 of composite material in the form of glass-polyester prepreg or glass-phenolic prepreg. Insulating shims 5 made of refractory cardboard are placed in the half-shells 4 in line with the partitions 2.
  • the assembly is carried out in such a way that the half-shells 4 are not in direct contact with the metallic central circuit, as indicated in FIG. 2 which is a longitudinal half-section of the assembled silencer.
  • Two metal rings 6 fixed to the tube 1 make it possible to correctly position the insulating washers 3.
  • the flanges 3 engage in grooves housed in the caps 41 of the half-shells.
  • the flanges 3 have an outwardly curved shape, which makes it possible to lengthen the distance between the connections on the hot tube 1 (inlet and outlet) which are outside the envelope.
  • Washers 9 made of refractory fibers can be placed inside the steel flanges 3 so as to reduce heat exchanges with the hot gases circulating inside the silencer.
  • the two half-shells are assembled together by screws, collars or rivets 7 with the interposition of a silicone seal 8 as shown in Figure 3 which is a half cross-section in the assembly area.
  • the assembly elements of the two half-shells can come from molding. For example, these assembly elements can act by clipping.
  • the half-shells 4 can be compression molded, by placing on the press punch a cloth of verranne and a blank of prepreg.
  • Closing the press ensures complete filling of the mold, including the imprints of the ribs arranged in the die.
  • the molds are heated to a constant temperature between 100 and 200 ° C (150 ° C in the present example), the polymerization is thus carried out between one and two minutes depending on the thickness of the part to be molded and the reactivity of the resin used.
  • the half-shells thus molded have the particularity of presenting on their internal face a layer of unimpregnated verranne fabric 14 (see FIG. 4) forming a certain thermal insulation, and of presenting on their external face cooling ribs 42 obtained from molding .
  • the insulation of the internal face can be increased by the presence of a layer of glass wool or rock as it already exists in many metallic silencers to attenuate the sound emission.
  • the internal insulation layer may be missing.
  • the polyester resin constituting most of the matrix is calcined on a small thickness of the internal face of the envelope.
  • the glass fiber thus exposed remains in place, thus forming an insulating layer which stops the progression of the calcination of the matrix. It is therefore sufficient to provide the ablative allowance at the time of design.
  • the shell is made with a composite material comprising glass fibers, pulverulent fillers and an organic matrix.
  • the arrangement and distribution of the constituents is such that heat exchanges are favored towards the outside and reduced towards the inside so that the temperature of the shell does not exceed 200 ° C.
  • the prepreg is made with an impregnation paste and it comprises 27% glass by weight in the form of rovings cut to 25 and / or 50 mm in length, and this prepreg can be easily manufactured using the machine described in patent FR-A-2 266 595 of the applicant.
  • the prepreg intended for molding the half-shells is manufactured on the same machine as previously but by incorporating hollow glass microspheres in the impregnation paste supplying the upper coating, while the lower coating is supplied with a dough without microspheres.
  • microspheres for example those corresponding to the reference B37 / 2000 of the company 3M, have a particle size greater than 50 ⁇ m and are thus filtered by the sheet of cut glass fibers.
  • microspheres therefore form an insulating layer on top of the prepreg.
  • the molding of the half-shells is thus carried out by placing the face of the prepreg filled with hollow microspheres on the punch side, with or without the interposition of verranne fabric.

Landscapes

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

Claims (5)

1. Schalldämpfer für einen Explosionsmotor, bestehend aus einer Abgasleitung (1), die in einem Gehäuse aufgenommen ist, das aus zwei Halbschalen (4) aus zusammengesetzten Materialien besteht, dadurch gekennzeichnet, daß die Abgasleitung (1) einerseits mit zwei Isolierflanschen (3) aus feuerfestem Material fest verbunden ist, die an den beiden Enden der Leitung angeordnet sind, wobei die Flansche (3) dazu dienen, direkt in angepaßte Nuten in den Halbschalen einzugreifen und andererseits mit senkrechten Trennwänden (2) fest verbunden ist, die sich auf den Halbschalen (4) unter Zwischenschaltung von Isolierstücken (5) aus feuerfestem Material abstützen.
2. Schalldämpfer nach Anspruch 1, dadurch gekennzeichnet, daß die Halbschalen (4) an ihrer Außenseite mit Kühlrippen (42) versehen sind.
3. Schalldämpfer nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das zusammengesetzte Material aus Glasfasern, die mit pulverförmigen Stoffen versetzt sind und aus einem organischen Gewebe besteht.
4. Schalldämpfer nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das zusammengesetzte Material mikroskopisch kleine Glaskugeln aufweist.
5. Schalldämpfer nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Flansche (3) nach außen hin gewölbt sind.
EP19890400996 1988-04-12 1989-04-11 Schalldämpfer für Explosionsmotoren Expired - Lifetime EP0337877B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8804810A FR2629864B1 (fr) 1988-04-12 1988-04-12 Silencieux pour moteur a explosion
FR8804810 1988-04-12

Publications (2)

Publication Number Publication Date
EP0337877A1 EP0337877A1 (de) 1989-10-18
EP0337877B1 true EP0337877B1 (de) 1992-05-13

Family

ID=9365218

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890400996 Expired - Lifetime EP0337877B1 (de) 1988-04-12 1989-04-11 Schalldämpfer für Explosionsmotoren

Country Status (4)

Country Link
EP (1) EP0337877B1 (de)
DE (1) DE68901487D1 (de)
ES (1) ES2031374T3 (de)
FR (1) FR2629864B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7934580B2 (en) 2006-04-12 2011-05-03 Ocv Intellectual Capital, Llc Long fiber thermoplastic composite muffler system
US7942237B2 (en) 2006-04-12 2011-05-17 Ocv Intellectual Capital, Llc Long fiber thermoplastic composite muffler system with integrated reflective chamber

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE467633B (sv) * 1990-11-09 1992-08-17 Volvo Ab Ljuddaempare foer motorfordon
IT1260127B (it) * 1992-03-31 1996-03-28 Renato Zara Procedimento per l'ottenimento di silenziatori per autoveicoli e silenziatori ottenuti con detto procedimento
DE19725003A1 (de) * 1997-06-13 1998-12-17 Philippron Jean Claude Schalldämpfer und Schalldämmstoff
EP1332071B1 (de) 2000-11-07 2008-09-10 Owens Corning Stossstangen / schalldämpferanordnung
DE10120974C1 (de) * 2001-04-27 2002-05-23 Eberspaecher J Gmbh & Co Abgasschalldämpfer
RU2235892C2 (ru) * 2002-10-21 2004-09-10 Открытое акционерное общество "Завод им. В.А. Дегтярева" Глушитель шума выпуска
US7730996B2 (en) * 2006-04-12 2010-06-08 Ocv Intellectual Capital, Llc Long fiber thermoplastic composite muffler system with integrated crash management
DE102010041666A1 (de) * 2010-09-29 2012-05-03 Röchling Automotive AG & Co. KG Kfz-Abgasführungsvorrichtung mit einem Funktionsgehäuse und einem Abgas-Kanal
DE102012204114B4 (de) * 2012-03-15 2015-03-26 Eberspächer Exhaust Technology GmbH & Co. KG Schalldämpfer-Einheit
CN104963745B (zh) * 2015-06-01 2018-02-06 上海佛吉亚红湖排气系统有限公司 一种汽车消声器消声棉填充开口工艺
CN105332780A (zh) * 2015-10-29 2016-02-17 安徽助成信息科技有限公司 一种排气消音器用隔热罩
JP7453736B2 (ja) * 2021-01-26 2024-03-21 三恵技研工業株式会社 排気構造体

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1480626A1 (de) * 1964-10-12 1969-09-04 Walker Mfg Company Aus Kunststoff bestehendes Auspuffrohr fuer Kraftfahrzeuge
DE2323264A1 (de) * 1973-05-09 1974-11-21 Volkswagenwerk Ag Abgasschalldaempfer fuer brennkraftmaschinen
FR2498682B1 (fr) * 1981-01-23 1986-08-08 Industeler Silencieux en matiere inoxydable pour pot d'echappement pour vehicule automobile
GB2129490B (en) * 1982-10-26 1986-12-31 Alan William Richards Corrosion resistant exhaust silencers
GB2143275B (en) * 1983-07-02 1987-03-25 Production Eng Res Silencer for exhaust gases
JPS60175717A (ja) * 1984-02-20 1985-09-09 Honda Motor Co Ltd 内燃機関用消音器

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7934580B2 (en) 2006-04-12 2011-05-03 Ocv Intellectual Capital, Llc Long fiber thermoplastic composite muffler system
US7942237B2 (en) 2006-04-12 2011-05-17 Ocv Intellectual Capital, Llc Long fiber thermoplastic composite muffler system with integrated reflective chamber

Also Published As

Publication number Publication date
FR2629864B1 (fr) 1991-03-01
ES2031374T3 (es) 1992-12-01
EP0337877A1 (de) 1989-10-18
DE68901487D1 (de) 1992-06-17
FR2629864A1 (fr) 1989-10-13

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