EP1378656A1 - Conduit poreux avec film mince - Google Patents
Conduit poreux avec film mince Download PDFInfo
- Publication number
- EP1378656A1 EP1378656A1 EP03291335A EP03291335A EP1378656A1 EP 1378656 A1 EP1378656 A1 EP 1378656A1 EP 03291335 A EP03291335 A EP 03291335A EP 03291335 A EP03291335 A EP 03291335A EP 1378656 A1 EP1378656 A1 EP 1378656A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- film
- wall
- porous
- porous wall
- intake duct
- 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
Links
- 239000010409 thin film Substances 0.000 title description 2
- 238000003466 welding Methods 0.000 claims description 8
- 238000002485 combustion reaction Methods 0.000 claims description 7
- 239000004033 plastic Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- -1 polyethylene Polymers 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 4
- 239000004952 Polyamide Substances 0.000 claims description 2
- 239000004698 Polyethylene Substances 0.000 claims description 2
- 239000004743 Polypropylene Substances 0.000 claims description 2
- 238000004026 adhesive bonding Methods 0.000 claims description 2
- 229920002647 polyamide Polymers 0.000 claims description 2
- 229920000728 polyester Polymers 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- 239000010408 film Substances 0.000 description 17
- 239000002985 plastic film Substances 0.000 description 8
- 229920006255 plastic film Polymers 0.000 description 8
- 239000002657 fibrous material Substances 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000010349 pulsation Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 210000001015 abdomen Anatomy 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Images
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
- F02M35/02—Air cleaners
- F02M35/024—Air cleaners using filters, e.g. moistened
-
- 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
-
- 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
- F02M35/1277—Reinforcement of walls, e.g. with ribs or laminates; Walls having air gaps or additional sound damping layers
Definitions
- the present invention relates to air intake ducts, in particular the combustion air of an internal combustion engine for a vehicle automobile.
- the present invention aims to overcome the drawbacks of the conduits to porous walls of the prior art by proposing an air intake duct having as good acoustic properties as conduits with porous walls in the art anterior and which is however impermeable to any external fluid (hot air or water), has a minimum pressure drop along the pipe and is less expensive as the sealed acoustic conduits of the prior art.
- this film By providing large areas of the film surface that do not are not attached to the porous wall, we make sure that this film is not intimately pressed against the porous wall and therefore has a possibility of movement under the effect of air pulsations inside the duct. So by its lightness and above all its capacity for movement, this film offers an obstacle minimum for propagation of pulsed waves through the porous wall. In somehow, the goal is to strictly limit the role of this film to that a barrier to fluids.
- the film is fixed to the porous wall in a pattern of dots and / or lines for example, the film can be fixed to the wall at points of small diameter arranged in a network, for example square.
- the porous wall and the film are fixed along lines forming a pattern, for example grid.
- the film or film is placed inside the duct formed by the wall porous. Otherwise, the film is continuously pressed on the wall and thus form an obstacle to the propagation of waves since it is no longer free.
- fixing the film to the porous wall is made by welding or gluing, in particular by ultrasonic welding.
- an air intake duct 1 of a combustion engine internal feeds combustion air for the internal combustion engine.
- This conduit of tubular shape in the figure, consists of a first tubular wall 2 of porous material, that is to say having pores allowing the fluids to pass through, and which can in particular be in the following materials: open cell foam, weaving, non-woven.
- the thickness of the porous wall is generally between 1mm and 3mm.
- the diameter of the porous wall is about 40 to 70 mm.
- a plastic film 4 is fixed, especially in polyethylene, polypropylene, polyamide, polyester, or other.
- This plastic film has a thickness of 30 ⁇ m, for example. This thickness is thin enough that the plastic film does not have no effect on the acoustic characteristics of the wall combination porous and plastic film, i.e. it has a mass sufficiently low surface area.
- the porous wall is generally made in a fibrous material, in particular a nonwoven with fibers, synthetic or natural.
- the plastic film 4 is fixed inside against the face internal of the porous wall 2. It could also be fixed outside this, in the case of an overpressure or pressure-balanced conduit.
- the fixing is done here by thermal welding following a network of welding points 5 having a diameter for example of 3 mm, the points being arranged in a square network of for example 10 mm.
- a network of welding points 5 having a diameter for example of 3 mm, the points being arranged in a square network of for example 10 mm.
- more than 90% of the interface surface between the two walls is free from any movement relative. Therefore, the acoustic resonances can be damped by the porous wall, in the same way as if there were no material film plastic.
- the plastic film makes it possible on the one hand to avoid pressure losses due to friction against fibrous materials and on the other hand seals against the hot outside air, which would otherwise be drawn in by the engine. This gives an engine with better efficiency.
- the fixings by welding or by bonding between the two walls can be done according to networks having lines 6 and in particular along a rectangular diamond or square grid. Any other form of pattern can be provided as long as a surface sufficient interface between the two walls is left free to move and in particular, it is believed that at least substantially 50% of this interface surface is left free of movement.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
Description
- il est prévu une pellicule ou film suffisamment mince pour ne pas avoir d'incidence d'un point de vue des caractéristiques acoustiques, et notamment ayant une masse surfacique inférieure à 100 g/m2 , et
- la pellicule est fixée à la paroi poreuse de sorte qu' au moins une partie, notamment au moins 50 %, de la surface de la pellicule se trouvant en regard de la paroi poreuse n'y est pas fixée.
par exemple, la pellicule peut être fixée à la paroi en des points d'un petit diamètre disposés selon un réseau, par exemple carré.
Claims (7)
- Conduit (1) d'admission, notamment d'air pour un moteur à combustion interne, notamment d'un véhicule automobile, comportant une première paroi (2) en un matériau poreux,
caractérisé en ce queil est prévu une pellicule ou film (4) suffisamment mince pour ne pas avoir d'incidence d'un point de vue des caractéristiques acoustiques, et notamment ayant une masse surfacique inférieure à 100 g/m2, etla pellicule (4) est fixée à la paroi (2) poreuse de sorte qu' au moins une partie, notamment au moins 50 %, de la surface de la pellicule se trouvant en regard de la paroi (2) poreuse n'y est pas fixée. - Conduit d'admission suivant la revendication 1, caractérisé en ce que la pellicule est fixée à la paroi poreuse suivant un motif de points (5) et/ou de lignes (6).
- Conduit d'admission suivant la revendication 1 ou 2, caractérisé en ce que la pellicule est fixée à la paroi en des points d'un petit diamètre disposés selon un réseau, par exemple carré.
- Conduit d'admission suivant la revendication 1, 2 ou 3, caractérisé en ce que la paroi poreuse et la pellicule sont fixées le long de lignes (6) formant un motif, par exemple quadrillé.
- Conduit d'admission suivant l'une des revendications précédentes, caractérisé en ce que la pellicule ou film est placé à l'intérieur de la paroi poreuse.
- Conduit d'admission suivant l'une des revendications précédentes, caractérisé en ce que la fixation de la pellicule à la paroi poreuse se fait par soudure ou collage, notamment par soudure à ultrasons.
- Conduit d'admission suivant l'une des revendications précédentes, caractérisé en ce que la pellicule (4) est en polyéthylène, en polypropylène, en polyamide, en polyester ou autre matière plastique.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0208441A FR2841961B1 (fr) | 2002-07-05 | 2002-07-05 | Conduit poreux avec film mince |
FR0208441 | 2002-07-05 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1378656A1 true EP1378656A1 (fr) | 2004-01-07 |
EP1378656B1 EP1378656B1 (fr) | 2007-11-28 |
Family
ID=29720097
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03291335A Expired - Lifetime EP1378656B1 (fr) | 2002-07-05 | 2003-06-04 | Conduit poreux avec film mince |
Country Status (9)
Country | Link |
---|---|
US (1) | US6877472B2 (fr) |
EP (1) | EP1378656B1 (fr) |
JP (1) | JP2004044592A (fr) |
KR (1) | KR100981822B1 (fr) |
BR (1) | BR0302108B1 (fr) |
DE (1) | DE60317739T2 (fr) |
ES (1) | ES2294248T3 (fr) |
FR (1) | FR2841961B1 (fr) |
PT (1) | PT1378656E (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2422974A1 (fr) * | 2010-08-26 | 2012-02-29 | Uponor Innovation AB | Tuyau en plastique multicouche |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7546899B2 (en) * | 2005-10-05 | 2009-06-16 | Arrowhead Products Corporation | Lightweight polymer muffler apparatus and method of making same |
US20080236938A1 (en) * | 2007-03-30 | 2008-10-02 | Siemens Vdo Automotive, Inc. | Induction system duct with noise attenuating holes |
US8485153B2 (en) * | 2009-11-11 | 2013-07-16 | Toledo Molding & Die, Inc. | Air intake apparatus |
GB2492344A (en) * | 2011-06-27 | 2013-01-02 | Henry Brown | Bedside urinal appliance |
DE102012221488A1 (de) | 2012-11-23 | 2014-05-28 | Mahle International Gmbh | Luftführendes Bauteil einer Frischluftanlage |
BR112017011038A2 (pt) | 2014-11-26 | 2018-02-14 | Federal-Mogul Powertrain Llc | manga acústica de não tecido e método de construção da mesma |
CN106481385B (zh) * | 2016-11-03 | 2019-06-07 | 清华大学苏州汽车研究院(相城) | 一种基于声学超材料的宽频小容积消声结构 |
US10323711B2 (en) * | 2017-05-23 | 2019-06-18 | Ford Global Technologies, Llc | Breakable duct for use with a motor vehicle air induction system |
EP3581784A1 (fr) | 2018-06-15 | 2019-12-18 | Mann + Hummel Gmbh | Agencement d'attenuation de bruit et conduit de fluide avec un tel agencement |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5379806A (en) * | 1993-05-26 | 1995-01-10 | Schuller International, Inc. | Fiber glass air duct with coated interior surface containing an organic biocide |
DE19750102A1 (de) * | 1997-11-12 | 1999-06-02 | Stankiewicz Gmbh | Gasdurchströmte Leitung mit Schallabsorptionswirkung |
EP1170499A1 (fr) * | 2000-07-03 | 2002-01-09 | Trelleborg Ab | Dispositif de réduction de bruit pour des conduits d'air |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3183941A (en) | 1962-03-16 | 1965-05-18 | Du Pont | Tubular fluid conduit of film fibril elements |
US3205913A (en) | 1962-11-13 | 1965-09-14 | Ametek Inc | Fluid containing means |
US5947158A (en) * | 1998-07-28 | 1999-09-07 | Johns Manville International, Inc. | Flexible insulated duct and the method of making the duct |
JP2003343373A (ja) | 2002-03-19 | 2003-12-03 | Nihon Sekiso Industries Co Ltd | 吸気ダクト |
-
2002
- 2002-07-05 FR FR0208441A patent/FR2841961B1/fr not_active Expired - Fee Related
-
2003
- 2003-06-02 KR KR1020030035319A patent/KR100981822B1/ko active IP Right Grant
- 2003-06-04 EP EP03291335A patent/EP1378656B1/fr not_active Expired - Lifetime
- 2003-06-04 ES ES03291335T patent/ES2294248T3/es not_active Expired - Lifetime
- 2003-06-04 PT PT03291335T patent/PT1378656E/pt unknown
- 2003-06-04 DE DE60317739T patent/DE60317739T2/de not_active Expired - Lifetime
- 2003-06-30 JP JP2003187267A patent/JP2004044592A/ja active Pending
- 2003-06-30 BR BRPI0302108-4A patent/BR0302108B1/pt not_active IP Right Cessation
- 2003-07-07 US US10/614,355 patent/US6877472B2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5379806A (en) * | 1993-05-26 | 1995-01-10 | Schuller International, Inc. | Fiber glass air duct with coated interior surface containing an organic biocide |
DE19750102A1 (de) * | 1997-11-12 | 1999-06-02 | Stankiewicz Gmbh | Gasdurchströmte Leitung mit Schallabsorptionswirkung |
EP1170499A1 (fr) * | 2000-07-03 | 2002-01-09 | Trelleborg Ab | Dispositif de réduction de bruit pour des conduits d'air |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2422974A1 (fr) * | 2010-08-26 | 2012-02-29 | Uponor Innovation AB | Tuyau en plastique multicouche |
Also Published As
Publication number | Publication date |
---|---|
US6877472B2 (en) | 2005-04-12 |
EP1378656B1 (fr) | 2007-11-28 |
BR0302108A (pt) | 2004-09-08 |
DE60317739D1 (de) | 2008-01-10 |
FR2841961B1 (fr) | 2004-08-27 |
KR20040004050A (ko) | 2004-01-13 |
PT1378656E (pt) | 2008-02-19 |
US20040069261A1 (en) | 2004-04-15 |
FR2841961A1 (fr) | 2004-01-09 |
KR100981822B1 (ko) | 2010-09-13 |
JP2004044592A (ja) | 2004-02-12 |
BR0302108B1 (pt) | 2011-07-26 |
DE60317739T2 (de) | 2008-04-30 |
ES2294248T3 (es) | 2008-04-01 |
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