EP2898200A1 - Attenuateur acoustique formant ecran thermique pour moteur thermique suralimente - Google Patents

Attenuateur acoustique formant ecran thermique pour moteur thermique suralimente

Info

Publication number
EP2898200A1
EP2898200A1 EP13767045.1A EP13767045A EP2898200A1 EP 2898200 A1 EP2898200 A1 EP 2898200A1 EP 13767045 A EP13767045 A EP 13767045A EP 2898200 A1 EP2898200 A1 EP 2898200A1
Authority
EP
European Patent Office
Prior art keywords
attenuation device
acoustic
turbocharger
acoustic attenuation
heat shield
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.)
Withdrawn
Application number
EP13767045.1A
Other languages
German (de)
English (en)
French (fr)
Inventor
Martial Dore
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.)
PSA Automobiles SA
Original Assignee
Peugeot Citroen Automobiles SA
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 Peugeot Citroen Automobiles SA filed Critical Peugeot Citroen Automobiles SA
Publication of EP2898200A1 publication Critical patent/EP2898200A1/fr
Withdrawn legal-status Critical Current

Links

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
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • 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 ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/14—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
    • 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
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/11—Thermal or acoustic insulation
    • 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
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/11—Thermal or acoustic insulation
    • F02B77/13—Acoustic 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
    • F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
    • F01N2260/20—Exhaust treating devices having provisions not otherwise provided for for heat or sound protection, e.g. using a shield or specially shaped outer surface of exhaust device

Definitions

  • the invention relates to an acoustic attenuator forming a heat shield for supercharged engine and a power unit including such attenuator.
  • the invention also relates to a motor vehicle incorporating such a powertrain.
  • FIGS 1 and 2 show a known powertrain.
  • the powertrain 10 comprises a motor 12 supercharged by means of a turbocharger 14.
  • the turbocharger 14 comprises a compressor stage 16, a turbine stage 18 and a bearing 20 for guiding the rotation of the wheel or wheels of the compression turbine.
  • the compressor stage 16 comprises first a low pressure air inlet 22 in fluid communication with an air filter 24 adapted to purify the intake air.
  • the compressor stage 16 also comprises a compressor casing 26 and a high pressure supply air outlet 28.
  • the compressed air at the outlet of the compressor casing 26 is then directed towards a heat exchanger 29 air / air heat to be cooled before admission to the engine 12.
  • the turbine stage 18 comprises a turbine casing 30 between an inlet 32 and an outlet 34 of the exhaust gas produced by the engine 12 and collected by means of an exhaust manifold 36. At the outlet of the turbine casing 30, the exhaust gas is directed through a catalyst and a particulate filter 38 to be cleaned.
  • the temperature in the vicinity of the turbine housing 30 of the turbocharger 14 is high. It is known to isolate the walls of this turbine casing from the environment near, using a heat shield 40.
  • the heat shield 40 is generally attached to the turbine housing 30 or on neighboring parts.
  • the invention therefore proposes an acoustic attenuation device for supercharged air circuit of a turbocharged internal combustion engine characterized in that it comprises a portion adapted to form a heat shield around at least a portion of the Turbocharger of the turbocharged engine.
  • the acoustic attenuation device comprises an acoustic attenuator, integral, preferably one-piece, with the thermal shielding part.
  • the acoustic attenuator is of one of a type of resonator, an airborne noise reflector, an airborne noise absorber and a hole absorber. According to one variant, the acoustic attenuator is of the Helmoltz resonator type.
  • the heat shield portion is made of metal, in particular made of stainless steel sheet.
  • the invention also relates to a power train comprising a turbocharged internal combustion engine and a supercharged air acoustic attenuation device as described above in all its combinations.
  • the acoustic attenuation device is adapted to attenuate the noise of the exhaust gas downstream of the turbine of the turbocharger. According to a variant, the acoustic attenuation device is fixed on the casing of the turbine of the turbocharger.
  • the heat shield portion surrounds at least a portion of the turbine housing of the turbocharger.
  • the invention also relates to a motor vehicle comprising a powertrain as described above in all its combinations.
  • Figure 5 a schematic view of a detail of Figure 4.
  • the powertrain 100 of Figures 3 and 4 differs from the powertrain 10 of Figures 1 and 2 in that it comprises a device 102 for acoustic attenuation for supercharged air circuit of a turbocharged internal combustion engine having a portion 104 adapted to form screen thermal circuit around at least a portion of turbocharger 14 of the turbocharged engine 12.
  • the portion 104 form heat shield around a portion of the turbine housing 30 of the turbocharger 14, surrounding this portion of the turbine housing 30.
  • the acoustic attenuation device 102 is in this case fixed on the turbine housing 30 of the power unit 100, this using any suitable fastening means, such as screws for example.
  • the acoustic attenuation device 102 could also be attached to other components of the powertrain 100, according to the architecture of the latter.
  • the acoustic attenuation device 102 comprises an acoustic attenuator 106, integral, preferably one-piece, with the heat shield portion 104.
  • the acoustic attenuator 106 may be of any known type. It may include a resonator, an airborne reflector, an airborne sound absorber and a hole absorber. In particular, the acoustic attenuator 106 may be Helmoltz resonator.
  • the acoustic attenuation device 102, and more particularly the acoustic attenuator 106, is adapted to attenuate the noise of the exhaust gas downstream of the turbine of the turbocharger 14.
  • the heat shield portion 104 may in particular be made of metal, such as stainless steel sheet, for example.
  • the metal embodiment ensures that the portion 104 performs its function as a heat shield around the turbine casing 30, or at least a portion of the turbine casing 30.
  • the powertrain 100 is adapted to be implemented in a motor vehicle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Supercharger (AREA)
EP13767045.1A 2012-09-18 2013-09-10 Attenuateur acoustique formant ecran thermique pour moteur thermique suralimente Withdrawn EP2898200A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1258753A FR2995633B1 (fr) 2012-09-18 2012-09-18 Attenuateur acoustique formant ecran thermique pour moteur thermique suralimente
PCT/FR2013/052074 WO2014044950A1 (fr) 2012-09-18 2013-09-10 Attenuateur acoustique formant ecran thermique pour moteur thermique suralimente

Publications (1)

Publication Number Publication Date
EP2898200A1 true EP2898200A1 (fr) 2015-07-29

Family

ID=47049323

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13767045.1A Withdrawn EP2898200A1 (fr) 2012-09-18 2013-09-10 Attenuateur acoustique formant ecran thermique pour moteur thermique suralimente

Country Status (4)

Country Link
EP (1) EP2898200A1 (zh)
CN (1) CN104781520B (zh)
FR (1) FR2995633B1 (zh)
WO (1) WO2014044950A1 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3066547B1 (fr) * 2017-05-17 2021-01-08 Renault Sas Systeme d'admission d'air de suralimentation dans un moteur a combustion interne de vehicule automobile comprenant un module d'attenuation de bruit
JP6437597B1 (ja) * 2017-06-16 2018-12-12 本田技研工業株式会社 内燃機関

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19818873C2 (de) * 1998-04-28 2001-07-05 Man B & W Diesel Ag Hubkolbenbrennkraftmaschine
US6510833B1 (en) * 2001-12-20 2003-01-28 American Diesel & Gas, Inc. Fuel saving combustion engine insulation method and system
KR20060008972A (ko) * 2003-05-02 2006-01-27 오웬스 코닝 낮고 적절한 주파수로 개선된 음향 성능을 갖는 머플러
DE10323731A1 (de) * 2003-05-24 2004-12-09 Daimlerchrysler Ag Abgasturbolader für eine Brennkraftmaschine
FR2933138A3 (fr) * 2008-06-25 2010-01-01 Renault Sas Dispositif de protection thermique equipe d'un turbocompresseur.
DE102009027539A1 (de) * 2009-07-08 2011-01-20 Ford Global Technologies, LLC, Dearborn Brennkraftmaschine mit Ladeluftkühler

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2014044950A1 *

Also Published As

Publication number Publication date
FR2995633A1 (fr) 2014-03-21
CN104781520A (zh) 2015-07-15
CN104781520B (zh) 2018-04-03
WO2014044950A1 (fr) 2014-03-27
FR2995633B1 (fr) 2018-04-13

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