EP1425505A1 - Conduite pour fluide, notamment sous forme de tuyau souple d'aspiration d'air non filtre dans un filtre a air de vehicule - Google Patents

Conduite pour fluide, notamment sous forme de tuyau souple d'aspiration d'air non filtre dans un filtre a air de vehicule

Info

Publication number
EP1425505A1
EP1425505A1 EP02777066A EP02777066A EP1425505A1 EP 1425505 A1 EP1425505 A1 EP 1425505A1 EP 02777066 A EP02777066 A EP 02777066A EP 02777066 A EP02777066 A EP 02777066A EP 1425505 A1 EP1425505 A1 EP 1425505A1
Authority
EP
European Patent Office
Prior art keywords
fluid guide
dimensionally stable
opening
fluid
members
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
EP02777066A
Other languages
German (de)
English (en)
Other versions
EP1425505B1 (fr
Inventor
Anton Wolf
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.)
Woco Industrietechnik GmbH
Original Assignee
Woco Industrietechnik GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7698801&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1425505(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Woco Industrietechnik GmbH filed Critical Woco Industrietechnik GmbH
Publication of EP1425505A1 publication Critical patent/EP1425505A1/fr
Application granted granted Critical
Publication of EP1425505B1 publication Critical patent/EP1425505B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10314—Materials for intake systems
    • F02M35/10321—Plastics; Composites; Rubbers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10091—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements
    • F02M35/10137—Flexible ducts, e.g. bellows or hoses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
    • F02M35/10301—Flexible, resilient, pivotally or movable parts; Membranes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10314—Materials for intake systems
    • F02M35/10334—Foams; Fabrics; Porous media; Laminates; Ceramics; Coatings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/1034—Manufacturing and assembling intake systems
    • F02M35/10354—Joining multiple sections together
    • F02M35/1036—Joining multiple sections together by welding, bonding or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
    • F02M35/1205—Flow throttling or guiding
    • F02M35/1238—Flow throttling or guiding by using secondary connections to the ambient, e.g. covered by a membrane or a porous member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
    • F02M35/1272—Intake silencers ; Sound modulation, transmission or amplification using absorbing, damping, insulating or reflecting materials, e.g. porous foams, fibres, rubbers, fabrics, coatings or membranes
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/161—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general in systems with fluid flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04—Cooling of air intake supply
    • F02B29/045—Constructional details of the heat exchangers, e.g. pipes, plates, ribs, insulation, materials, or manufacturing and assembly
    • F02B29/0475—Constructional details of the heat exchangers, e.g. pipes, plates, ribs, insulation, materials, or manufacturing and assembly the intake air cooler being combined with another device, e.g. heater, valve, compressor, filter or EGR cooler, or being assembled on a special engine location
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/1034—Manufacturing and assembling intake systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
    • F05C2225/08—Thermoplastics

Definitions

  • Fluid guidance in particular in the form of a raw air hose for sucking raw air into an air filter of a motor vehicle
  • the invention relates to a fluid filling with at least two members made of acoustically essentially dense material and at least one opening for sound damping, an impedance change, in particular in the form of an impedance jump, of the flow resistance of the fluid flowing through the fluid guide between two adjacent members.
  • unfiltered air hoses which are installed in motor compartments of motor vehicles in order to draw in or direct ambient air from the cooler to an air filter
  • the manufacturer endeavors to reduce the noise level prevailing during engine operation.
  • Two main methods were used in the automotive industry for this purpose.
  • Either resonators are attached to unfiltered air hoses, or unfiltered air hoses are equipped with a so-called bypass hose, which allows certain frequencies to be filtered out.
  • Technically refined resonators are supposed to filter out the widest possible spectrum in sound and can be detuned, while bypass paths can optionally be switched on or off by valve controls.
  • JP 60050265 A discloses a porous pipe socket sintered from aluminum powder, which is connected to an air filter via a piece of hose.
  • the porous, permeable pipe socket is characterized by a significantly reduced sound level with constant air supply efficiency.
  • the pipe socket has the disadvantage of high material costs.
  • EP 0 837 238 A2 teaches the use of a porous, moldable, sound-absorbing material with which the air filter or its feed lines can be lined on the inside.
  • An additional, interconnected inner wall also entails increased additional costs for materials and production.
  • EP 0 818 648 B1 discloses the use of a porous band material for the production of a hose.
  • a tape is wound helically and glued in the form of a hose and used for noise reduction in the air duct in the engine compartment.
  • a woven plastic is used as the porous material, which means that in addition to the actual shaping processing process, the production of the woven tape is also costly.
  • Apertures for sound absorption in the event of changes in impedance are known per se in the prior art.
  • a line section is known which is constructed from two interconnected shells, with openings for damping being arranged in the joint between the shells.
  • a diffuser effect may be inherent in the line section, and the pipe wall thereof may be provided with bores.
  • the known line section is very complex to construct.
  • a generic fluid guide is known from GB 2 364 352 A.
  • straight, rigid elements with openings are perforated and each arranged between flexible elements, wherein the flexible elements can be designed in the manner of a corrugated tube section.
  • the introduction of openings in the straight elements must take place in coordination with the geometry of said elements, which is relatively time-consuming and costly in order to obtain a desired soundproofing.
  • the object of the present invention is therefore to further develop the generic fluid guide in such a way that the disadvantages of the prior art of Teclinik are overcome, in particular to supply a raw air hose which is extremely inexpensive to manufacture and which also has a high degree of sound-reducing properties.
  • the at least one opening is arranged in the region of the change in impedance between two adjacent members.
  • a plurality of openings are arranged along the circumference of the fluid guide and / or each opening is essentially rectangular.
  • the total area of the opening or the openings corresponds essentially to the cross-sectional area of the fluid guide, in particular in the area of its air intake end or its air outlet end.
  • each opening be punched and / or covered with an open-pore, porous protective fabric.
  • the structural members are made of a plastic, in particular polypropylene, preferably in an injection molded or blown manner.
  • the protective fabric is a plastic fleece, in particular made of polypropylene, the protective fabric preferably being glued or welded to the members.
  • the structural members comprise a bellows between two substantially dimensionally stable areas, preferably at least one opening each being arranged between the one substantially film-stable area and the bellows on the one hand and the bellows and the other substantially dimensionally stable area on the other. It can be provided that a substantially dimensionally stable area with a
  • Radiator connector is connected or molded, and / or the other substantially dimensionally stable area is connected or molded with an air filter connector, for
  • a device according to the invention is characterized by at least one curvature, preferably in one essentially dimensionally stable region, and / or at least one recess, preferably in the other, essentially dimensionally stable region.
  • the invention is therefore based on the finding that openings in the wall, for example, of a raw air hose mounted in the engine compartment of a Kraftfal tool between the radiator and an air filter, in particular before and after members integrated into the raw air hose, at which an impedance change in the flow resistance occurs considerably Reduction of the noise level generated during engine operation, especially the noise at the intake of untreated air, i.e. at the radiator.
  • a raw air hose is essentially a ⁇ / 4 resonator, in which sound absorption by reflection and / or interference takes place through the introduction of openings according to the invention.
  • the dimensioning of the openings essentially represents a compromise solution between maximizing the flow resistance on the one hand and minimizing the acoustic resistance on the other hand. especially in the area of its outlet.
  • stamping the openings, which should then be covered with an open-pore, porous material such as, for example, in the form of a polypropylene fleece, in order to avoid contamination of the raw air hose, has proven to be particularly practical.
  • the structural members of the unfiltered air hose in particular in the form of a bellows between two essentially dimensionally stable areas, are blown out of a plastic, such as polypropylene, in one for manufacturing reasons, so that the openings can then simply be punched in. Furthermore, it is favorable for the production to weld the protective material of the openings onto the structural members. Overall, this results in a cost-effective raw air hose that is extremely effective. Further features and advantages of the invention result from the following description, in which an exemplary embodiment of the invention is explained in detail with the aid of a schematic drawing. It shows:
  • Fig.l shows an embodiment of a raw air hose according to the invention in a perspective side view
  • FIG. 1 shows a raw air hose 1 according to the invention, as can be installed in a motor vehicle between a radiator and an air filter (not shown in each case).
  • the raw air hose 1 for example made of a plastic, has a flexible bellows 8 between essentially acoustically sealed and dimensionally stable areas 2, 3, at the respective ends 4, 5 of which there is a radiator connection piece 6 or an air filter connection piece 7.
  • the dimensionally stable area 2 facing the air filter connecting piece 7 is additionally characterized by a K-shaped armor 9, while the opposite, dimensionally stable area 3 facing the radiator connecting piece 6 has a recess 10 to facilitate final assembly in the engine compartment (not shown) of the motor vehicle.
  • each adhesive zone 12, 12 ' serves to prevent the ingress of dirt particles into the raw air hose 1 by applying an air-permeable fleece by means of adhesive beads (both not shown) via the openings 11, 11' in the area of the adhesive zone 12, 12 '.
  • This fleece which can also be made of a plastic, can alternatively be welded to the walls of the raw air hose.
  • the graph of FIG. 2 compares the damping of the muzzle noise, the muzzle being the end of the unfiltered air hose 1 facing the cooler, that is to say the end 4 of the cooler connector 6, plotted against excitation frequencies for three different types of unfiltered air hoses.
  • Curve 1 represents the acoustic behavior of an unfiltered air hose which has a bellows but no porous walls and is also made of plastic, as is usually the case in the prior art.
  • the Curve 2 represents the acoustic behavior of a flexible raw air hose which has been produced in accordance with the method disclosed in EP 0 818 648 B1.
  • curve 3 represents the acoustic behavior of an unfiltered air hose 1 according to the invention.
  • FIG. 2 clearly shows by comparing the three curves with one another the sound insulation of the unfiltered air hose 1 according to the invention, which is more effective over wide frequency ranges, compared to the unfiltered air hoses known from the prior art.

Landscapes

  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Pipe Accessories (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Exhaust Silencers (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Filtering Materials (AREA)

Abstract

L'invention concerne une conduite (1) pour fluide comportant au moins deux éléments (2, 3, 8) de construction, en matériau sensiblement étanche aux bruits, et au moins un orifice (11, 11') pour dissiper le son. Entre les deux éléments de construction voisins, l'impédance de la résistance à l'écoulement du fluide traversant la conduite varie, notamment sous forme d'un saut d'impédance. L'invention est caractérisée en ce que l'orifice, dans la zone de variation d'impédance, est situé entre les deux éléments de construction voisins.
EP02777066A 2001-09-12 2002-09-11 Conduite pour fluide, notamment sous forme de tuyau souple d'aspiration d'air non filtre dans un filtre a air de vehicule Revoked EP1425505B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10144972 2001-09-12
DE10144972A DE10144972C1 (de) 2001-09-12 2001-09-12 Fluidführung, insbesondere in Form eines Rohluftschlauchs zum Einsaugen von Rohluft in einen Luftfilter eines Kraftfahrzeuges
PCT/EP2002/010204 WO2003023217A1 (fr) 2001-09-12 2002-09-11 Conduite pour fluide, notamment sous forme de tuyau souple d'aspiration d'air non filtre dans un filtre a air de vehicule

Publications (2)

Publication Number Publication Date
EP1425505A1 true EP1425505A1 (fr) 2004-06-09
EP1425505B1 EP1425505B1 (fr) 2005-05-11

Family

ID=7698801

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02777066A Revoked EP1425505B1 (fr) 2001-09-12 2002-09-11 Conduite pour fluide, notamment sous forme de tuyau souple d'aspiration d'air non filtre dans un filtre a air de vehicule

Country Status (4)

Country Link
US (1) US7249652B2 (fr)
EP (1) EP1425505B1 (fr)
DE (2) DE10144972C1 (fr)
WO (1) WO2003023217A1 (fr)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202004003141U1 (de) * 2004-03-01 2004-06-17 Rational Ag Schallgedämpftes Brennersystem für ein Gargerät und Gargerät mit solch einem Brennersystem
DE202006003137U1 (de) * 2006-02-24 2007-07-12 Mann+Hummel Gmbh Filterrohrleitung
DE102006040980B4 (de) * 2006-08-31 2009-04-02 Heinrich Gillet Gmbh Körperschallsenkende Vorrichtung
DE102006054270A1 (de) * 2006-11-17 2008-05-21 Veritas Ag Baugruppe, umfassend einen Abgasturbolader, einen Ladeluftkühler und eine Ladeluftleitung
JP2008231979A (ja) * 2007-03-19 2008-10-02 Roki Co Ltd 消音チャンバーダクト
JP4771546B2 (ja) * 2007-03-22 2011-09-14 株式会社Ｒｏｋｉ 消音ダクト
US20080236938A1 (en) * 2007-03-30 2008-10-02 Siemens Vdo Automotive, Inc. Induction system duct with noise attenuating holes
US8596398B2 (en) 2007-05-16 2013-12-03 Polaris Industries Inc. All terrain vehicle
FR2921123B1 (fr) * 2007-09-17 2015-06-19 Mark Iv Systemes Moteurs Sa Circuit de refroidissement des gaz d'alimentation propulses par un turbocompresseur
JP4396753B2 (ja) * 2007-10-03 2010-01-13 株式会社デンソー 冷凍サイクル用消音器
DE202007018075U1 (de) * 2007-12-21 2009-05-14 Mann+Hummel Gmbh Filteranordnung
US8994494B2 (en) 2008-10-10 2015-03-31 Polaris Industries Inc. Vehicle security system
DE202010005261U1 (de) 2010-04-20 2010-07-01 Lainox Ali S.P.A., Vittorio Veneto Druckausgleicher zur Verbindung des Luftansaugrohrs mit der Muffe eines Ansaugkrümmers für Brenner, und Konvektions- oder Kombi-Gasherd zum Kochen von Lebensmitteln, der mit dieser Vorrichtung ausgestattet ist
US10358187B2 (en) * 2014-01-10 2019-07-23 Polaris Industries Inc. Snowmobile
CA3079718C (fr) 2012-02-09 2023-08-29 Polaris Industries Inc. Motoneige avec embrayage cvt
US9845004B2 (en) 2014-01-10 2017-12-19 Polaris Industries Inc. Snowmobile
DE102014010836B4 (de) * 2014-07-24 2018-12-27 Mann+Hummel Gmbh Fluidrohr einer Fluidleitung eines Kraftfahrzeugs, Kraftfahrzeug und Brennkraftmaschine mit wenigstens einem Fluidrohr
DE102015202851A1 (de) * 2015-02-17 2016-08-18 Röchling Automotive SE & Co. KG Fluidleitungsanordnung
JP6992423B2 (ja) * 2017-11-09 2022-01-13 トヨタ紡織株式会社 内燃機関のインレットダクト
US10793181B2 (en) 2018-02-13 2020-10-06 Polaris Industries Inc. All-terrain vehicle

Family Cites Families (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1642857U (de) * 1951-01-18 1952-08-28 Mann & Hummel Filter Ansauggeraeuschdaempfer fuer verdichter und andere luftansaugende kolbenmaschinen.
US3061039A (en) * 1957-11-14 1962-10-30 Joseph J Mascuch Fluid line sound-absorbing structures
CA984693A (en) * 1973-11-22 1976-03-02 Bombardier Limited Air intake silencer for a two-stroke internal combustion engine
JPS5930209Y2 (ja) * 1975-04-19 1984-08-29 川崎重工業株式会社 オ−トバイ用吸気消音器
JPS56143310A (en) * 1980-03-17 1981-11-09 Hiruzu Ind Ltd Muffler and silencing method
SE445573B (sv) * 1982-09-08 1986-06-30 Volzh Ob Proizv Luftrenare vid forbrenningsmotor
JPS6050265A (ja) * 1983-08-31 1985-03-19 Nissan Motor Co Ltd 自動車の吸気騒音低減装置
AU597878B2 (en) * 1985-02-18 1990-06-14 Honda Giken Kogyo Kabushiki Kaisha Silencer with a side branch
US4782912A (en) * 1987-03-18 1988-11-08 Ford Motor Company Engine air cleaner - noise reducer
DE3830346A1 (de) 1988-09-07 1990-03-15 Rehau Ag & Co Schalldaemmendes luftfuehrungselement
US5116231A (en) * 1990-06-29 1992-05-26 Mazda Motor Corporation Intake system for automobile engine
DE4217630C1 (fr) * 1992-05-28 1993-09-23 Mercedes-Benz Aktiengesellschaft, 70327 Stuttgart, De
US5529743A (en) * 1994-06-30 1996-06-25 Steere Enterprises, Inc. Methods for the manufacture of clean air ducts
ES2201247T3 (es) * 1996-06-24 2004-03-16 Westaflex Tubos Flexiveis Ltda. Dispositivos acusticos moldeables.
FR2751046B1 (fr) * 1996-07-10 1998-09-25 Westaflex Automobile Procede de fabrication d'un tuyau poreux a spires helicoidales collees, notamment pour le transport de gaz
DE19629368A1 (de) * 1996-07-20 1998-01-22 Gillet Heinrich Gmbh Vorrichtung zum Unterdrücken des Entstehens von harmonischen Tönen in perforierten Rohren
JP3787915B2 (ja) * 1996-09-04 2006-06-21 豊田合成株式会社 内燃機関の吸気管
JPH1122572A (ja) * 1997-06-30 1999-01-26 Suzuki Motor Corp 内燃機関のレゾネータ構造
JP3420471B2 (ja) * 1997-07-22 2003-06-23 本田技研工業株式会社 吸気消音装置
JP3526729B2 (ja) * 1997-08-13 2004-05-17 本田技研工業株式会社 吸気消音装置
DE19750102A1 (de) * 1997-11-12 1999-06-02 Stankiewicz Gmbh Gasdurchströmte Leitung mit Schallabsorptionswirkung
US5881554A (en) * 1998-03-23 1999-03-16 Ford Global Technologies, Inc. Integrated manifold, muffler, and catalyst device
FR2788833B1 (fr) * 1999-01-22 2001-03-16 Mecaplast Sam Dispositif de diminution de bruit d'air, procede de fabrication et utilisations d'un tel dispositif
DE19903165A1 (de) * 1999-01-27 2000-08-03 Mann & Hummel Filter Ansaugvorrichtung mit einem Durchbrüche aufweisenden Leitungsabschnitt
JP2001073755A (ja) * 1999-09-01 2001-03-21 Nakagawa Sangyo Kk 内燃機関のエキゾーストパイプ及び排気系
KR20010061229A (ko) * 1999-12-28 2001-07-07 이계안 흡기 시스템
GB2364352A (en) * 2000-07-03 2002-01-23 Draftex Ind Ltd Noise reduction in air conduits; making perforated conduits
FR2814778B1 (fr) * 2000-09-29 2003-01-10 Peugeot Citroen Automobiles Sa Conduit pour le transport de fluide gazeux et dispositif d'admission d'air pour moteur a combustion interne comportant un tel conduit

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03023217A1 *

Also Published As

Publication number Publication date
US7249652B2 (en) 2007-07-31
WO2003023217A1 (fr) 2003-03-20
WO2003023217B1 (fr) 2004-01-08
EP1425505B1 (fr) 2005-05-11
DE50203102D1 (de) 2005-06-16
US20040262076A1 (en) 2004-12-30
DE10144972C1 (de) 2003-05-15

Similar Documents

Publication Publication Date Title
EP1425505B1 (fr) Conduite pour fluide, notamment sous forme de tuyau souple d'aspiration d'air non filtre dans un filtre a air de vehicule
EP1759112B1 (fr) Filtre aspirateur pour moteur a combustion interne de vehicule
DE69604195T2 (de) Ein schalldämpfer für ansaugsystem oder abgassystem
EP0834011B1 (fr) Silencieux d'aspiration pour moteur a combustion interne
EP1352172B1 (fr) Silencieux comportant une pluralite de chambres de resonance
DE102004016997B4 (de) Abgedichtete Luftfilterbaugruppe
DE102012108804A1 (de) Kompakter Niederfrequenzresonator
WO1999047807A1 (fr) Dispositif d'aspiration d'air pour moteur a combustion interne
WO2006018336A1 (fr) Dispositif d'isolation phonique et dispositif pour conduire un fluide
DE19504223A1 (de) Schalldämpfer für den Ansaugkanal einer Brennkraftmaschine
DE19903165A1 (de) Ansaugvorrichtung mit einem Durchbrüche aufweisenden Leitungsabschnitt
EP3707701B1 (fr) Dispositif de réduction de bruits transmis par l'air et des structures
DE19846666C2 (de) Schalldämpfende Leitung
DE10333021A1 (de) HERSCHEL-QUINCKE Röhre für Fahrzeuganwendungen
DE102012210713A1 (de) Schall absorbierende struktur
DE102004013654A1 (de) Lufteinlassvorrichtung
DE102010043267A1 (de) Schalldämpfer für ein Lufteinlasssystem eines Verbrennungsmotors
EP2175959B1 (fr) Système filtrant
DE102010023649A1 (de) Membranversteifung durch Verrippung für die Vorrichtung zur Übertragung des Motorengeräusches
DE69722555T2 (de) Akustisches Gerät aus spritzgiessfähigem Kunststoff
EP2851526B1 (fr) Silencieux d'échappement
DE102006032716A1 (de) Luftfilteranordnung für ein Kraftfahrzeug
DE7307335U (de) Abgasschalldaempfer fuer zweitakt- motore
DE10360495B4 (de) Ansaugleitung mit Geräuschdämpfung
DE69932440T2 (de) Vorrichtung zum Prüfen von Porosität eines akustischen Rohres um Luft zu fördern

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20030911

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RBV Designated contracting states (corrected)

Designated state(s): DE ES FR

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20050511

REF Corresponds to:

Ref document number: 50203102

Country of ref document: DE

Date of ref document: 20050616

Kind code of ref document: P

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLAX Notice of opposition and request to file observation + time limit sent

Free format text: ORIGINAL CODE: EPIDOSNOBS2

26 Opposition filed

Opponent name: MANN + HUMMEL GMBH

Effective date: 20060210

ET Fr: translation filed
PLBB Reply of patent proprietor to notice(s) of opposition received

Free format text: ORIGINAL CODE: EPIDOSNOBS3

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20120921

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20121010

Year of fee payment: 11

RDAF Communication despatched that patent is revoked

Free format text: ORIGINAL CODE: EPIDOSNREV1

REG Reference to a national code

Ref country code: DE

Ref legal event code: R103

Ref document number: 50203102

Country of ref document: DE

Ref country code: DE

Ref legal event code: R064

Ref document number: 50203102

Country of ref document: DE

RDAG Patent revoked

Free format text: ORIGINAL CODE: 0009271

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: PATENT REVOKED

27W Patent revoked

Effective date: 20130406

REG Reference to a national code

Ref country code: DE

Ref legal event code: R107

Ref document number: 50203102

Country of ref document: DE

Effective date: 20131010