EP3303815A1 - Dispositif d'atténuation des bruits de bouche et des bruits rayonnés - Google Patents
Dispositif d'atténuation des bruits de bouche et des bruits rayonnésInfo
- Publication number
- EP3303815A1 EP3303815A1 EP16732692.5A EP16732692A EP3303815A1 EP 3303815 A1 EP3303815 A1 EP 3303815A1 EP 16732692 A EP16732692 A EP 16732692A EP 3303815 A1 EP3303815 A1 EP 3303815A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tube
- conduit
- noise
- air
- compartments
- 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
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
- F02M35/12—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
- F02M35/1205—Flow throttling or guiding
- F02M35/1233—Flow throttling or guiding by using expansion chambers in the air intake flow path
-
- 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
- F02M35/1255—Intake silencers ; Sound modulation, transmission or amplification using resonance
- F02M35/1266—Intake silencers ; Sound modulation, transmission or amplification using resonance comprising multiple chambers or compartments
-
- 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
- F02M35/1205—Flow throttling or guiding
- F02M35/1211—Flow throttling or guiding by using inserts in the air intake flow path, e.g. baffles, throttles or orifices; Flow guides
-
- 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 a device for attenuation of mouth noises and radiated noises, comprising a gas transport duct connected to an internal combustion engine.
- turbocharged engines there is a high frequency acoustic component ranging from 1 kHz to 15 kHz. This acoustic component is generated by the turbocharger and can also propagate and radiate through the air supply ducts.
- mouth noise is the acoustic component that propagates in the air supply ducts
- radiated noise is the sound component radiated by the air supply ducts.
- a silencer usually has a central tube in which air circulates from the turbocharger, and whose wall is perforated with a plurality of orifices which connect the inside of the tube with a peripheral chamber, delimited by a bell surrounding the tube. central.
- the small volume of air contained in each orifice acts substantially as a small mass, which would be suspended from a spring constituted by the larger volume of air contained in the peripheral chamber. An attenuation of the noise is thus obtained in a spectral band located near the characteristic frequency of this "mass-spring" system.
- the silencer does not cover the entire frequency range. Indeed, the silencer does not have a sufficient level of attenuation in the field of low frequencies.
- the resonator comprises a central tube having a closed bypass at right angles. This kind of resonator is very selective and only works on a very thin frequency band.
- an object of the present invention is to provide a device for attenuation of mouth noises and radiated noises, to cover a wide range of frequencies, without requiring a large volume.
- the invention relates to a device for attenuating the sounds of noise and radiated noise, which comprises a conduit for conveying gas intended to be connected to a combustion engine.
- the duct has a peripheral wall on at least a portion of which is disposed at least one porous element in the air, sound attenuation means which comprise at least one tube disposed in the conveying duct.
- At least one peripheral chamber is delimited inside the duct between the tube and the peripheral wall of the duct.
- the tube includes at least one portion having an orifice that allows the interior of the tube to communicate with the peripheral chamber.
- the synergy of the porous element disposed on the peripheral wall with the tube having at least one orifice enables the device according to the invention to attenuate mouth noises and radiated noises, over an increased frequency range.
- the combination of the porous element disposed on the peripheral wall with the tube having at least one orifice allows the device according to the invention to be bulky. Indeed, the porous element can attenuate the sound waves on certain frequencies, which avoids a long succession of orifices on the tube to cover a wide frequency range.
- the invention provides a device for attenuation of mouth noises and radiated noises, to cover a wide range of frequencies, without however requiring a large volume.
- the device according to the invention advantageously makes it possible to reduce the ingestion of hot air by the engine.
- the duct may have at least one substantially transverse internal partition positioned around the tube and for delimiting at least two compartments of the peripheral chamber.
- At least a portion of the tube surrounded by one of the compartments may have a plurality of orifices so that portion of tube and the corresponding compartment form an absorption silencer.
- At least a portion of the tube surrounded by one of the compartments may have an orifice such that said tube portion and the corresponding compartment form a resonator.
- At least a portion of the tube surrounded by one of the compartments may have two diametrically opposed orifices so that said tube portion and the corresponding compartment form an expansion chamber of the gas flowing in the tube.
- the device may have at least three successive portions forming absorption silencers, at least one portion forming an expansion chamber and at least one portion forming a resonator.
- the device according to the invention advantageously makes it possible to combine the effects of the absorption silencers, the resonator and the porous element in the air.
- the porous air element may have at least one strip of porous material in the air.
- the device may comprise at least two porous air elements diametrically opposed on the peripheral wall of the conduit.
- Figure 1 is a perspective view of a device according to the invention.
- FIG. 2 is a perspective view, in partial section, of a device according to the invention.
- Figure 3 is a schematic sectional view of a device according to the invention.
- Fig. 4 is a graph showing the level of muzzle noise and the frequency range of the muzzle noise emitted by an air intake duct having no noise attenuation member;
- Fig. 5 is a graph showing the level of muzzle noise and the frequency range of the muzzle noise emitted by an air intake duct having a plurality of silencers
- Fig. 6 is a graph showing the level of muzzle noise and the frequency range of the mouth noise emitted by a device according to the invention
- Fig. 7 is a graph showing the radiated noise level and the frequency range of the radiated noise emitted by an air intake duct having a porous member
- FIG. 8 is a graph representing the level of radiated noise and the frequency range of the radiated noise emitted by a device according to the invention.
- the device 1 comprises an air intake duct 2 configured to be connected to an internal combustion engine of a vehicle (not shown).
- the duct 2 has two ends 21-22 and a peripheral wall 23.
- the duct 2 has a substantially parallelepipedal projection 24.
- the duct 2 is made from two injection-molded shells and then assembled by their edges according to a welding process.
- a strip of a porous air element 4 is disposed against a portion of the wall 23.
- the porous air element may be a fibrous material impregnated with acrylic.
- the duct 2 comprises a tube 3.
- the space between the outside of the tube 3 and the peripheral wall 23 defines a chamber 5.
- Internal transverse partitions 24 divide the chamber 5 into several compartments 51.
- the tube 3 have three portions having a plurality of orifices 30a each to form, with the corresponding compartment 51, an absorption silencer 31.
- the three silencers by absorption 31 can each be calibrated to attenuate a distinct frequency range.
- another portion of the tube 3 surrounded by a compartment 51 may have two orifices 30b diametrically opposed so as to form an expansion chamber of the gases flowing in the tube 3.
- another portion of the tube 3 surrounded by a compartment 51 may have a right-angled bypass comprising an orifice 30c, to form a resonator 35.
- the advantageous combination of the three silencers 31, the expansion chamber 34, the resonator 35 and the porous air element 4 allows the device 1 to attenuate the noises and sounds radiated over a wide frequency range.
- an air intake duct without sound attenuation device emits a high level of mouth noise over a wide frequency range.
- an air intake duct with several silencers can mitigate high frequency noise emissions but has little effect on low frequencies.
- the device 1 according to the invention makes it possible to attenuate substantially all of the sound frequencies of the emitted mouth sounds.
- an air intake pipe having only a porous element does not allow the absorption of radiated noise over a wide frequency range.
- the air intake pipe does not absorb sound emissions around 500Hz.
- the device 1 according to the invention makes it possible to absorb substantially all the sound frequencies of the radiated noise emitted.
- the invention provides a device 1 for attenuation of mouth noises and radiated noise to cover a wide range of frequencies, without requiring a large volume.
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)
- Pipe Accessories (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1554916A FR3036731B1 (fr) | 2015-05-29 | 2015-05-29 | Dispositif d'attenuation des bruits de bouche et des bruits rayonnes |
PCT/FR2016/051256 WO2016193584A1 (fr) | 2015-05-29 | 2016-05-27 | Dispositif d'atténuation des bruits de bouche et des bruits rayonnés |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3303815A1 true EP3303815A1 (fr) | 2018-04-11 |
EP3303815B1 EP3303815B1 (fr) | 2021-02-24 |
Family
ID=53524899
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16732692.5A Active EP3303815B1 (fr) | 2015-05-29 | 2016-05-27 | Dispositif d'atténuation des bruits de bouche et des bruits rayonnés |
Country Status (7)
Country | Link |
---|---|
US (1) | US10927800B2 (fr) |
EP (1) | EP3303815B1 (fr) |
CN (1) | CN108026872A (fr) |
ES (1) | ES2872748T3 (fr) |
FR (1) | FR3036731B1 (fr) |
MX (1) | MX2017015278A (fr) |
WO (1) | WO2016193584A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113482754A (zh) * | 2021-07-30 | 2021-10-08 | 重庆长安汽车股份有限公司 | 一种消声装置及车辆 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018112115A (ja) * | 2017-01-11 | 2018-07-19 | トヨタ紡織株式会社 | 内燃機関のエアクリーナ |
US11946398B1 (en) | 2022-10-12 | 2024-04-02 | Mann+Hummel Gmbh | Broadband resonator with an entrained water removal system for a fuel cell compressor |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2056608A (en) * | 1933-12-22 | 1936-10-06 | C F Burges Lab Inc | Silencer |
US2166417A (en) * | 1938-07-01 | 1939-07-18 | Burgess Battery Co | Silencer |
DE19915523A1 (de) * | 1999-04-07 | 2000-10-26 | Porsche Ag | Sauganlage für Brennkraftmaschinen |
US6802388B2 (en) * | 2001-06-13 | 2004-10-12 | Woco Franz-Josef Wolf & Co. Gmbh | Silencer or noise damper |
JP2008008253A (ja) * | 2006-06-30 | 2008-01-17 | Toyoda Gosei Co Ltd | 消音ダクト |
DE102007039048A1 (de) * | 2007-08-17 | 2009-02-19 | Mann + Hummel Gmbh | Ansaugluftkanal mit Akustik-Kanalabschnitt und Verfahren zu seiner Herstellung |
US7967106B2 (en) * | 2008-03-24 | 2011-06-28 | Ford Global Technologies | Air induction sound modification system for internal combustion engine |
US7934581B2 (en) * | 2009-01-30 | 2011-05-03 | Eaton Corporation | Broadband noise resonator |
SE535923C2 (sv) * | 2011-04-29 | 2013-02-19 | Scania Cv Ab | Ljuddämparanordning och motorfordon innefattande en sådan ljuddämparanordning |
JP2014218924A (ja) * | 2013-05-07 | 2014-11-20 | 株式会社神戸製鋼所 | 消音器遮音構造 |
US9175648B2 (en) * | 2013-10-17 | 2015-11-03 | Ford Global Technologies, Llc | Intake system having a silencer device |
EP2907997B1 (fr) * | 2014-02-13 | 2018-05-23 | Ls Mtron Ltd. | Résonateur pour véhicule |
US9382826B1 (en) * | 2015-01-09 | 2016-07-05 | Dayco Ip Holdings, Llc | Noise attenuating member for noise attenuating units in engines |
-
2015
- 2015-05-29 FR FR1554916A patent/FR3036731B1/fr not_active Expired - Fee Related
-
2016
- 2016-05-27 WO PCT/FR2016/051256 patent/WO2016193584A1/fr active Application Filing
- 2016-05-27 US US15/578,112 patent/US10927800B2/en not_active Expired - Fee Related
- 2016-05-27 MX MX2017015278A patent/MX2017015278A/es unknown
- 2016-05-27 CN CN201680030978.XA patent/CN108026872A/zh active Pending
- 2016-05-27 EP EP16732692.5A patent/EP3303815B1/fr active Active
- 2016-05-27 ES ES16732692T patent/ES2872748T3/es active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113482754A (zh) * | 2021-07-30 | 2021-10-08 | 重庆长安汽车股份有限公司 | 一种消声装置及车辆 |
Also Published As
Publication number | Publication date |
---|---|
US10927800B2 (en) | 2021-02-23 |
CN108026872A (zh) | 2018-05-11 |
MX2017015278A (es) | 2018-08-01 |
US20180156172A1 (en) | 2018-06-07 |
FR3036731A1 (fr) | 2016-12-02 |
EP3303815B1 (fr) | 2021-02-24 |
ES2872748T3 (es) | 2021-11-02 |
FR3036731B1 (fr) | 2017-05-19 |
WO2016193584A1 (fr) | 2016-12-08 |
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