EP0837238A2 - Akustisches Gerät aus spritzgiessfähigem Kunststoff - Google Patents

Akustisches Gerät aus spritzgiessfähigem Kunststoff Download PDF

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Publication number
EP0837238A2
EP0837238A2 EP97304416A EP97304416A EP0837238A2 EP 0837238 A2 EP0837238 A2 EP 0837238A2 EP 97304416 A EP97304416 A EP 97304416A EP 97304416 A EP97304416 A EP 97304416A EP 0837238 A2 EP0837238 A2 EP 0837238A2
Authority
EP
European Patent Office
Prior art keywords
acoustic
mouldable
compartment
coupled
air filter
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
EP97304416A
Other languages
English (en)
French (fr)
Other versions
EP0837238A3 (de
EP0837238B1 (de
Inventor
Edmond Pol Jean Lepoutre
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.)
Westaflex Tubos Flexiveis Ltda
Original Assignee
Westaflex Tubos Flexiveis Ltda
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
Priority claimed from BR9602968A external-priority patent/BR9602968A/pt
Priority claimed from BR9603046A external-priority patent/BR9603046A/pt
Application filed by Westaflex Tubos Flexiveis Ltda filed Critical Westaflex Tubos Flexiveis Ltda
Publication of EP0837238A2 publication Critical patent/EP0837238A2/de
Publication of EP0837238A3 publication Critical patent/EP0837238A3/de
Application granted granted Critical
Publication of EP0837238B1 publication Critical patent/EP0837238B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F02M35/14—Combined air cleaners and silencers
    • 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
    • F02M35/1216—Flow throttling or guiding by using a plurality of holes, slits, protrusions, perforations, ribs or the like; Surface structures; Turbulence generators
    • 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
    • F02M35/1288—Intake silencers ; Sound modulation, transmission or amplification combined with or integrated into other devices ; Plurality of air intake silencers

Definitions

  • the present invention relates to mouldable acoustic devices, and in particular to mouldable acoustic tubular lining devices made of sound-absorbing material or a set of sound-absorbing materials, which has the shape thereof predetermined according to the internal characteristics of vehicle engine air inlet components, such as air filter of an automobile, pick-up truck, truck or the like.
  • acoustic devices to be located in the interior of a vehicle engine's air filter, which can be, for example, known sound-reducers or truncated-cone sound reducers, made of plastics or metal, which are generally coupled around circular openings (1-A1, 2A1) - see Figure 1 annexed hereto, showing a lateral cross-section of a type of conventional air filter - made respectively on one side of the air filter's upper compartment (1) and lower compartment (2), the air filter element (3) being compressed between the two compartments (1,2) and the internal supports for said air filter element (3).
  • the air is aspirated by the dirty air inlet nozzle (1-A) of the upper compartment (1) and in the aspiration sequence - indicated by the larger arrows (S-1) - the air passes through the noise reducer or truncated cone shaped sonorizer - not shown on the Figure - coupled around the circular opening (1-A1), enters the upper compartment (1), then passes through the filtering element (3), enters the lower compartment (2) of the filter and passes through the noise reducer or truncated cone shaped sonorizer of the lower compartment (2) that is coupled around the circular opening (2-A1), entering the purified air exit nozzle (2-A) and then into the vehicle's engine, whereby, simultaneously and inversely to the trajectory described above, there is a sequence of inlet noises by means of sound waves - shown sequentially by bold arrows (S-2) which finally exit through the filter's upper compartment (1) dirty air inlet nozzle (1-A).
  • acoustic devices which may be located in the outer part of the air filter, which can be for example, tubes or boxes that control the air input to the engine and which are arranged upstream of the air filter, coupled to the nozzle (1-A) of the dirty air inlet of the air filter's upper compartment (1).
  • the above-mentioned conventional acoustic devices are intended to reduce the inlet noises.
  • a conventional clean air passage tube (5) made of rubber or plastics, which is coupled to the clean air exit nozzle (2-A) of the air filter's lower compartment (2) and to the carburetor nozzle (6) comprises merely a leak proof tube (5) that ensures a seal for the conducted air.
  • the tube (5) is typically made of rubber or plastics causes it to transmit the engine noise via the filter; because the clean air passage tube (5) interconnects the air filter and the carburetor (6), it is an integral part of the vehicle engine inlet assembly.
  • the mouldable acoustic device of the present invention ameliorates the deficiencies with known arrangements.
  • the invention comprises a mouldable acoustic device internally coupled to a vehicle engine's air filter, being coupled inside an air filter provided with an upper compartment (1) having a dirty air inlet nozzle (1-A) and a circular opening (1-A1) made on the wall of compartment (1) the air filter element (3) being pressed between the filter's upper (1) and lower (2) compartments and tie internal supports (4) of said air filter element, with a circular opening (2-A1) made on the wall of compartment (2), followed by purified air exit nozzle (2-A) towards the inside of the vehicle's engine, the acoustic device being made by moulding, thermo-pressing machine or any other appropriate manufacture process, with a predetermine shape, according to the internal and acoustic characteristics of the type of air filter in which it will be applied, the mouldable, acoustic device preferably comprising porous acoustic absorbing material, preferably comprising a lining of one or more sheets or plates of said material.
  • the mouldable acoustic device therefore comprises an acoustic internal lining that can assume several shapes - compatible with the internal and acoustic shapes of the conventional air filter to which it will be internally coupled (typically by gluing) - the device being therefore a stamped or thermoformed part (optionally removable), that can be coupled inside the conventional air filter's upper compartment or lower compartment.
  • Figure 3 shows a lateral cross-section of a conventional air filter provided with an upper compartment (1) having a dirty air nozzle (2-A) and a circular opening (1-A1) made on the wall of compartment (1), the air filter element (3) being pressed between the filter's upper (1) and lower (2) compartment and the internal supports (4) of the air filter element, there being a circular opening (2-A1) made on the wall of compartment (2), which is followed by a purified air exit nozzle (2-A) towards the inside of the vehicle's engine.
  • Figure 3 shows a lateral cross-section of a conventional air filter provided with an upper compartment (1) having a dirty air nozzle (2-A) and a circular opening (1-A1) made on the wall of compartment (1), the air filter element (3) being pressed between the filter's upper (1) and lower (2) compartment and the internal supports (4) of the air filter element, there being a circular opening (2-A1) made on the wall of compartment (2), which is followed by a purified air exit nozzle (2-A) towards the inside of the vehicle's engine.
  • the mouldable acoustic device forms a lining box (5) (of generally square, circular or any other suitable shape conforming to the interior of the filter), that is coupled (typically by gluing) to the inner surfaces of the air filter's upper compartment (1), with a circular lateral opening (5-A) coinciding with the circular lateral opening (1-A1) of the upper compartment (1) and also coinciding with the circular lateral opening (2-A1) of the lower compartment (2), the lining box (5) being open in the direction of positioning with the air filter element (3).
  • a lining box (5) (of generally square, circular or any other suitable shape conforming to the interior of the filter), that is coupled (typically by gluing) to the inner surfaces of the air filter's upper compartment (1), with a circular lateral opening (5-A) coinciding with the circular lateral opening (1-A1) of the upper compartment (1) and also coinciding with the circular lateral opening (2-A1) of the lower compartment (2), the lining box (5) being open in the direction of positioning with the air filter element
  • the device is mouldable in the shape of a lining box (5) of required shape, that internally lines the air filter's upper (1) and lower (2) compartments, or may line only one of these two compartments (1 or 2).
  • the mouldable acoustic device in the shape of a lining box (5) comprises a porous acoustic absorbing material or more than one porous acoustic material advantageously in sheet or plate form.
  • this material can be a non-woven, porous and/or treated sheet, fibrous material or plate (for example, of polyester).
  • this set of materials can comprise superimposed lining sheets or plates glued to each other, made, for example, of porous paper, perforated aluminium or cotton tissue.
  • a mould For manufacture of the mouldable acoustic device (5) is employed a mould, a thermo-pressing machine or another appropriate manufacturing process. It should be emphasised that for each type of conventional filter a study of its acoustic characteristics is made in order to allow the proper moulding of the acoustic, box-shaped lining device (5) applicable thereto.
  • the technical effect caused by the mouldable acoustic lining device (5) is that of absorbing the sound waves; the invention has shown a significant decibel gain in respect of prior art noise reducers or truncated cone shaped sonorizers made of plastic or metal, and acoustic external tubes or boxes.
  • an improved mouldable acoustic tubular device has been developed to solve the technical deficiency relating to the prior art clean air passage tube (5) shown in Figure 2.
  • the device comprises an acoustic, internal, tubular lining device (7) having a predetermined shape, in accordance with the internal characteristics of the clean air passage tube (5), wherein the acoustic tubular lining device (7) will be applied internally by adhesive or the like, typically remaining fixed to the inner portion of tube (5) inner portion, the acoustic tubular lining device (7) being capable of being applied partially or totally along the tube (5) inner portion, also with an end thereof optionally extending beyond the tube (5) limit, in the coupling thereof to the clean air exit nozzle (2-A).
  • Figures 4 and 5 show an inlet assembly, the mouldable acoustic tubular device (7) is applied inside the clean air passage tube (5) by partial coupling, it being noted that in this example of application to the acoustical tubular device (7) - also shown separately on Figure 4, which shows a lateral cross-section of tube (5), having the device (7) internally coupled thereto - is given a straight tubular shape.
  • One end (7-A) of device (7) extends beyond the limit of the tube (5) mouth and penetrates (7-A) inside the lower compartment (2) clean air exit nozzle (2-A) of the conventional air filter, being able to penetrate inside said clean air compartment (2).
  • Figure 2 also shows the sequence of aspiration of dirty air - shown by larger arrows (S-1); accordingly, the air drawn by dirty air inlet nozzle (1-A) passes through the upper compartment (1) and through the filtering element (3); the already cleaned air then enters the air filter's lower compartment (2), and the clean air flow - shown by larger arrows (S-2) passes through the clean air exit nozzle (2-A) and subsequently through the inner portion of the acoustic tubular device (7) and the clean air passage tube (5) and thence to the vehicle engine's interior, through the carburetor (6), whereby, simultaneously and inversely to the trajectory described above, a sequence of inlet noises takes place by means of sound waves - shown in sequence by bold arrows (S-3) which will be initially absorbed by the acoustic tubular device (7) and subsequently absorbed by the conventional acoustic and internal devices coupled inside the air filter's lower (2) and upper (1) compartments, and finally absorbed by the conventional external acoustic devices coupled
  • the acoustic tubular device (7) may entirely or partially dispense with the utilisation of the above-mentioned conventional acoustic devices.
  • Figure 5 is a lateral cross-sectional view of the conventional clean air passage tube (5), having the mouldable acoustic tubular device (7) applied by total coupling to the interior thereof, it being noted that in this example of application of the device (7) a tubular shape is provided in accordance with the internal and broken characteristics of the conventional tube (5). It is further noted that in this example, the end (7-A) of device (7) does not extend beyond the limit of the tube mouth (5) whereby, as a result, the end (7-A) will not penetrate the inside of the clean air exit nozzle (2-A) of the conventional air filter, as could penetrate nozzle (2-A) and the clean air compartment (2).
  • the mouldable acoustic tubular device (7) is manufactured of an acoustic absorbing material provided with pores, or manufactured with a set of acoustic materials, all having controlled porosity.
  • this could be a porous, non-woven polyester.
  • this set of materials could comprise porous paper, perforated aluminium and cotton tissue superimposed to and glued to each other.
  • a thermo-pressing machine or a mould, or a circular weaving machine, or another appropriate manufacture process.
  • the technical effect caused by the mouldable acoustic device (7) is that of absorbing the sound waves, it being observed that in the device (7) has shown excellent acoustic conditions, whereby an intake assembly employing the device (7) inside the clean air passage tube (5) there will be a significant decibel gain.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
EP97304416A 1996-06-24 1997-06-24 Akustisches Gerät aus spritzgiessfähigem Kunststoff Expired - Lifetime EP0837238B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
BR9602968 1996-06-24
BR9602968A BR9602968A (pt) 1996-06-24 1996-06-24 Dispositivo acústico amoldável e acoplável internamente em filtro de ar de motor para veículo
BR9603046 1996-07-01
BR9603046A BR9603046A (pt) 1996-07-01 1996-07-01 Dispositivo tubular acústico amoldável e acoplável internamente no tubo de ar limpo do conjunto de admissao de motor para veículo

Publications (3)

Publication Number Publication Date
EP0837238A2 true EP0837238A2 (de) 1998-04-22
EP0837238A3 EP0837238A3 (de) 1998-10-28
EP0837238B1 EP0837238B1 (de) 2003-06-04

Family

ID=25664774

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97304416A Expired - Lifetime EP0837238B1 (de) 1996-06-24 1997-06-24 Akustisches Gerät aus spritzgiessfähigem Kunststoff

Country Status (3)

Country Link
EP (1) EP0837238B1 (de)
DE (1) DE69722555T2 (de)
ES (1) ES2201247T3 (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002084099A1 (en) * 2001-04-11 2002-10-24 Donaldson Company, Inc. Filter assemblies and systems for intake air for fuel cells
WO2003023217A1 (de) 2001-09-12 2003-03-20 Woco Franz Josef Wolf & Co. Gmbh Fluiführung, insbesondere in form eines rohluftschlauchs zum einsaugen von rohluft in einen luftfilter eines kraftfahrzeugs
WO2003023884A2 (en) * 2001-09-11 2003-03-20 Donaldson Company, Inc. Integrated systems for use with fuel cells, and methods
US6780534B2 (en) 2001-04-11 2004-08-24 Donaldson Company, Inc. Filter assembly for intake air of fuel cell
US6783881B2 (en) 2001-04-11 2004-08-31 Donaldson Company, Inc. Filter assembly for intake air of fuel cell
US7416580B2 (en) 2001-04-11 2008-08-26 Donaldsom Company, Inc. Filter assemblies and systems for intake air for fuel cells
EP2148075A1 (de) * 2008-07-21 2010-01-27 GE Jenbacher GmbH & Co. OHG Luftfilter für Brennkraftmaschine
EP2990636A1 (de) * 2014-08-26 2016-03-02 Westaflex Tubos Flexiveis Ltda. Poröses flexibles rohr zur verschmutzungsverhinderung

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009037056A1 (de) * 2009-08-13 2011-02-17 Poroson Gmbh Luftfilter
DE102010038634A1 (de) 2010-07-29 2012-02-02 Poroson Gmbh Luftfilter

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6026157A (ja) * 1983-07-20 1985-02-09 Nissan Motor Co Ltd 内燃機関のエアクリ−ナ
DE3429633A1 (de) * 1984-08-11 1986-02-20 Ing. Walter Hengst GmbH & Co KG, 4400 Münster Schalldaempfendes luftansaugfilter fuer eine brennkraftmaschine
EP0195121A1 (de) * 1985-01-26 1986-09-24 Dr.Ing.h.c. F. Porsche Aktiengesellschaft Verfahren zum Auskleiden von Rohren und Kanälen
JPS62121859A (ja) * 1985-11-22 1987-06-03 Yamaha Motor Co Ltd 内燃機関のエアクリ−ナ
JPS62174560A (ja) * 1986-01-27 1987-07-31 Mazda Motor Corp エンジンの吸気ダクト構造
DE3707617A1 (de) * 1987-03-10 1988-09-22 Audi Ag Ansaugrohr fuer eine brennkraftmaschine
EP0435588A2 (de) * 1989-12-27 1991-07-03 CADILLAC RUBBER & PLASTICS, INC. Lufteinlassstutzen und Verfahren zu seiner Herstellung
WO1993019291A1 (de) * 1992-03-14 1993-09-30 Illbruck Gmbh Schalldämpfer für ein strömendes gasförmiges medium, insbesondere verbrennungsluft einer brennkraftmaschine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6026157A (ja) * 1983-07-20 1985-02-09 Nissan Motor Co Ltd 内燃機関のエアクリ−ナ
DE3429633A1 (de) * 1984-08-11 1986-02-20 Ing. Walter Hengst GmbH & Co KG, 4400 Münster Schalldaempfendes luftansaugfilter fuer eine brennkraftmaschine
EP0195121A1 (de) * 1985-01-26 1986-09-24 Dr.Ing.h.c. F. Porsche Aktiengesellschaft Verfahren zum Auskleiden von Rohren und Kanälen
JPS62121859A (ja) * 1985-11-22 1987-06-03 Yamaha Motor Co Ltd 内燃機関のエアクリ−ナ
JPS62174560A (ja) * 1986-01-27 1987-07-31 Mazda Motor Corp エンジンの吸気ダクト構造
DE3707617A1 (de) * 1987-03-10 1988-09-22 Audi Ag Ansaugrohr fuer eine brennkraftmaschine
EP0435588A2 (de) * 1989-12-27 1991-07-03 CADILLAC RUBBER & PLASTICS, INC. Lufteinlassstutzen und Verfahren zu seiner Herstellung
WO1993019291A1 (de) * 1992-03-14 1993-09-30 Illbruck Gmbh Schalldämpfer für ein strömendes gasförmiges medium, insbesondere verbrennungsluft einer brennkraftmaschine

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 009, no. 149 (M-390), 25 June 1985 & JP 60 026157 A (NISSAN JIDOSHA KK), 9 February 1985 *
PATENT ABSTRACTS OF JAPAN vol. 011, no. 339 (M-639), 6 November 1987 & JP 62 121859 A (YAMAHA MOTOR CO LTD), 3 June 1987 *
PATENT ABSTRACTS OF JAPAN vol. 012, no. 014 (M-659), 16 January 1988 & JP 62 174560 A (MAZDA MOTOR CORP), 31 July 1987 *

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7138008B2 (en) 2001-04-11 2006-11-21 Donaldson Company, Inc. Filter assemblies and systems for intake air for fuel cells
US6783881B2 (en) 2001-04-11 2004-08-31 Donaldson Company, Inc. Filter assembly for intake air of fuel cell
US7416580B2 (en) 2001-04-11 2008-08-26 Donaldsom Company, Inc. Filter assemblies and systems for intake air for fuel cells
WO2002084099A1 (en) * 2001-04-11 2002-10-24 Donaldson Company, Inc. Filter assemblies and systems for intake air for fuel cells
US6797027B2 (en) 2001-04-11 2004-09-28 Donaldson Company, Inc. Filter assemblies and systems for intake air for fuel cells
US6780534B2 (en) 2001-04-11 2004-08-24 Donaldson Company, Inc. Filter assembly for intake air of fuel cell
WO2003023884A3 (en) * 2001-09-11 2004-02-19 Donaldson Co Inc Integrated systems for use with fuel cells, and methods
US6951697B2 (en) 2001-09-11 2005-10-04 Donaldson Company, Inc. Integrated systems for use with fuel cells, and methods
WO2003023884A2 (en) * 2001-09-11 2003-03-20 Donaldson Company, Inc. Integrated systems for use with fuel cells, and methods
WO2003023217A1 (de) 2001-09-12 2003-03-20 Woco Franz Josef Wolf & Co. Gmbh Fluiführung, insbesondere in form eines rohluftschlauchs zum einsaugen von rohluft in einen luftfilter eines kraftfahrzeugs
US7249652B2 (en) 2001-09-12 2007-07-31 Woco Industrietechnik Gmbh Fluid guideline, especially in the form of a tube for taking up untreated air in an air filter of a motor vehicle
DE10144972C1 (de) * 2001-09-12 2003-05-15 Woco Franz Josef Wolf & Co Gmbh Fluidführung, insbesondere in Form eines Rohluftschlauchs zum Einsaugen von Rohluft in einen Luftfilter eines Kraftfahrzeuges
EP2148075A1 (de) * 2008-07-21 2010-01-27 GE Jenbacher GmbH & Co. OHG Luftfilter für Brennkraftmaschine
EP2990636A1 (de) * 2014-08-26 2016-03-02 Westaflex Tubos Flexiveis Ltda. Poröses flexibles rohr zur verschmutzungsverhinderung

Also Published As

Publication number Publication date
DE69722555D1 (de) 2003-07-10
DE69722555T2 (de) 2004-04-29
EP0837238A3 (de) 1998-10-28
EP0837238B1 (de) 2003-06-04
ES2201247T3 (es) 2004-03-16

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