WO2014044950A1 - Noise attenuator acting as a heat screen for a supercharged combustion engine - Google Patents

Noise attenuator acting as a heat screen for a supercharged combustion engine Download PDF

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Publication number
WO2014044950A1
WO2014044950A1 PCT/FR2013/052074 FR2013052074W WO2014044950A1 WO 2014044950 A1 WO2014044950 A1 WO 2014044950A1 FR 2013052074 W FR2013052074 W FR 2013052074W WO 2014044950 A1 WO2014044950 A1 WO 2014044950A1
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WO
WIPO (PCT)
Prior art keywords
attenuation device
acoustic
turbocharger
acoustic attenuation
heat shield
Prior art date
Application number
PCT/FR2013/052074
Other languages
French (fr)
Inventor
Martial Dore
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
Priority to EP13767045.1A priority Critical patent/EP2898200A1/en
Priority to CN201380047709.0A priority patent/CN104781520B/en
Publication of WO2014044950A1 publication Critical patent/WO2014044950A1/en

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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.

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  • 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)

Abstract

The invention relates to a noise attenuation device (102) for a booster circuit of a turbocharged internal combustion engine (12) comprising a part (104) designed to form a heat screen around at least a portion of the turbocompressor (14) of the turbocharged engine (12).

Description

ATTENUATEUR ACOUSTIQUE FORMANT ECRAN THERMIQUE  ACOUSTIC ATTENUATOR FORMING THERMAL SCREEN
POUR MOTEUR THERMIQUE SURALIMENTE FOR THERMAL MOTOR SURALIMENT
[0001 ] La présente invention revendique la priorité de la demande française 1258753 déposée le 18 septembre 2012 dont le contenu (texte, dessins et revendications) est ici incorporé par référence. The present invention claims the priority of the French application 1258753 filed on September 18, 2012 whose content (text, drawings and claims) is hereby incorporated by reference.
[ooo2] L'invention concerne un atténuateur acoustique formant écran thermique pour moteur thermique suralimenté et un groupe motopropulseur incluant un tel atténuateur. L'invention vise également un véhicule automobile intégrant un tel groupe motopropulseur. [Ooo2] 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.
[ooo3] Les figures 1 et 2 représentent un groupe motopropulseur 10 connu. Le groupe motopropulseur 10 comporte un moteur 12 suralimenté au moyen d'un turbocompresseur 14. Le turbocompresseur 14 comporte un étage compresseur 16, un étage turbine 18 et un palier 20 de guidage en rotation de la roue ou des roues de la turbine de compression. [Ooo3] Figures 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.
[ooo4] L'étage compresseur 16 comprend tout d'abord une entrée d'air basse pression 22 en communication de fluide avec un filtre à air 24 adapté à épurer l'air d'admission. L'étage compresseur 16 comprend également un carter de compresseur 26 et une sortie d'air d'alimentation haute pression 28. L'air comprimé en sortie du carter de compresseur 26 est ensuite diriger vers un échangeur 29 thermique air/air pour être refroidi avant admission dans le moteur 12. [Ooo4] 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.
[ooo5] L'étage turbine 18 comprend un carter turbine 30 entre une entrée 32 et une sortie 34 des gaz d'échappement produit par le moteur 12 et collectés au moyen d'un collecteur d'échappement 36. A la sortie du carter turbine 30, les gaz d'échappement sont dirigés au travers d'un catalyseur et d'un filtre à particules 38 pour être dépollués. [ooo5] 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.
[ooo6] La température au voisinage du carter turbine 30 du turbocompresseur 14 est élevée. Il est connu d'isoler les parois de ce carter turbine de l'environnement proche, à l'aide d'un écran thermique 40. L'écran thermique 40 est généralement fixé sur le carter turbine 30 ou sur des pièces avoisinantes. [ooo6] 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.
[ooo7] Cependant, dans cette zone au voisinage du carter turbine 30, se trouve généralement un atténuateur acoustique d'air suralimenté 42. La fonction de cet atténuateur acoustique d'air suralimenté 42 est d'atténuer les « bruits de bouche » (c'est-à-dire les bruits d'aspiration) du turbocompresseur 14. Il est connu de réaliser cet atténuateur acoustique d'air suralimenté 42 en plastique. Dans ce cas, l'atténuateur acoustique d'air suralimenté 42 doit être maintenu à distance de la zone chaude du turbocompresseur pour éviter d'être détérioré par la chaleur se dégageant du turbocompresseur 14. Il s'ensuit un encombrement local important, qui nuit à la compacité - notamment en hauteur - du groupe motopropulseur et qui impose une limitation de la forme du capot avant du véhicule automobile sur lequel est monté le groupe motopropulseur. Les deux lignes 44, 46 de la figure 2 illustrent le souhait de limiter en hauteur le groupe motopropulseur, ceci afin de proposer de nouveaux profils du capot avant, notamment. [0oo7] However, in this area in the vicinity of the turbine housing 30, is generally a supercharged air acoustic attenuator 42. The function of this supercharged air attenuator 42 is to attenuate the "mouth noises" (c that is to say the suction noise) of the turbocharger 14. It is known to make this acoustic attenuator supercharged air 42 plastic. In this case, the supercharged air acoustic attenuator 42 must be kept at a distance from the hot zone of the turbocharger to avoid being damaged by the heat emerging from the turbocharger 14. It follows a large local footprint, which harms the compactness - especially in height - of the powertrain and imposing a limitation of the shape of the front cover of the motor vehicle on which is mounted powertrain. The two lines 44, 46 of Figure 2 illustrate the desire to limit the height of the powertrain, this to provide new profiles of the front cover, including.
[ooo8] Bien entendu, le turbocompresseur 14 pourrait être monté plus bas sur le moteur. Cependant, cette solution aurait un coût très important, car il conviendrait de redéfinir toute l'architecture du groupe motopropulseur 1 0, et du moteur 12, en particulier. [ooo9] L'invention propose donc un dispositif d'atténuation acoustique pour circuit d'air suralimenté d'un moteur à combustion interne turbocompressé caractérisé en ce qu'il comporte une partie adaptée à former écran thermique autour d'une portion au moins du turbocompresseur du moteur turbocompressé. [ooo8] Of course, the turbocharger 14 could be mounted lower on the engine. However, this solution would have a very important cost, because it would be necessary to redefine the entire architecture of the power train 1 0, and the engine 12, in particular. 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.
[ooi o] Selon une variante, le dispositif d'atténuation acoustique comprend un atténuateur acoustique, solidaire, de préférence monobloc, avec la partie formant écran thermique. According to one variant, the acoustic attenuation device comprises an acoustic attenuator, integral, preferably one-piece, with the thermal shielding part.
[ooi i] Selon une variante, l'atténuateur acoustique est d'un type parmi un résonateur, un réflecteur de bruit aérien, un absorbeur de bruit aérien et un absorbeur à trou. [0012] Selon une variante, l'atténuateur acoustique est du type résonateur de Helmoltz. According to one variant, 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.
[0013] Selon une variante, la partie formant écran thermique est en métal, notamment en tôle d'acier inoxydable. [0014] L'invention se rapporte également à un groupe motopropulseur comprenant un moteur à combustion interne turbocompressé et un dispositif d'atténuation acoustique d'air suralimenté tel que décrit ci-avant dans toutes ses combinaisons. According to a variant, 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.
[ooi 5] Selon une variante, le dispositif d'atténuation acoustique est adapté à atténuer le bruit des gaz d'échappement en aval de la turbine du turbocompresseur. [0016] Selon une variante, le dispositif d'atténuation acoustique est fixé sur le carter de la turbine du turbocompresseur. [Ooi 5] According to one variant, 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.
[0017] Selon une variante, la partie formant écran thermique entoure au moins une portion du carter de la turbine du turbocompresseur. Alternatively, the heat shield portion surrounds at least a portion of the turbine housing of the turbocharger.
[0018] L'invention vise aussi un véhicule automobile comprenant un groupe motopropulseur tel que décrit ci-avant dans toutes ses combinaisons. The invention also relates to a motor vehicle comprising a powertrain as described above in all its combinations.
[ooi 9] D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée qui suit d'un mode de réalisation de l'invention, donné à titre d'exemple uniquement et en référence aux dessins qui montrent : [Ooi 9] Other features and advantages of the invention will appear on reading the following detailed description of an embodiment of the invention, given by way of example only and with reference to the drawings which show:
- figures 1 et 2, des vues schématiques d'un groupe motopropulseur connu ; - figures 3 et 4, des vues schématiques d'un groupe motopropulseur ; et - Figures 1 and 2, schematic views of a known powertrain; - Figures 3 and 4, schematic views of a powertrain; and
- figure 5 une vue schématique d'un détail de la figure 4. - Figure 5 a schematic view of a detail of Figure 4.
[0020] Sur les figures 3 et 4, les éléments identiques aux éléments des figures 1 et 2 portent le même signe de référence. Ces éléments ne sont pas décrits de nouveau, à fin de concision de la présente description. [0021 ] Le groupe motopropulseur 100 des figures 3 et 4 se distingue du groupe motopropulseur 10 des figures 1 et 2 en ce qu'il comporte un dispositif 102 d'atténuation acoustique pour circuit d'air suralimenté d'un moteur à combustion interne turbocompressé comportant une partie 104 adaptée à former écran thermique autour d'une portion au moins du turbocompresseur 14 du moteur turbocompressé 12. En l'espèce, la partie 104 forme écran thermique autour d'une portion du carter turbine 30 du turbocompresseur 14, en entourant cette portion du carter turbine 30. [0022] Il est ainsi possible de réduire, de façon notoire, la proximité des différentes pièces les unes par rapport aux autres et, ainsi, de respecter la limite de conception 46 restreignant la hauteur disponible sous le capot avant du véhicule automobile. In Figures 3 and 4, the elements identical to the elements of Figures 1 and 2 bear the same reference sign. These elements are not described again, for the sake of brevity of the present description. 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. In this case, 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. [ 0022] It is thus possible to reduce, in a known way, the proximity of the various parts relative to each other and, thus, to respect the design limit 46 limiting the available height under the front cover of the motor vehicle.
[0023] Le dispositif d'atténuation acoustique 102 est en l'espèce fixé sur le carter turbine 30 du groupe motopropulseur 100, ceci à l'aide de tout moyen de fixation adéquat, comme des vis par exemple. Bien entendu, le dispositif d'atténuation acoustique 102 pourrait également être fixé à d'autres composants du groupe motopropulseur 100, suivant l'architecture de ce dernier. 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. Of course, the acoustic attenuation device 102 could also be attached to other components of the powertrain 100, according to the architecture of the latter.
[0024] En l'espèce, le dispositif d'atténuation acoustique 102 comprend un atténuateur acoustique 106, solidaire, de préférence monobloc, avec la partie formant écran thermique 104. In this case, the acoustic attenuation device 102 comprises an acoustic attenuator 106, integral, preferably one-piece, with the heat shield portion 104.
[0025] L'atténuateur acoustique 106 peut être de tout type connu. Il peut notamment s'agir d'un résonateur, un réflecteur de bruit aérien, un absorbeur de bruit aérien et un absorbeur à trou. En particulier, l'atténuateur acoustique 106 peut être du résonateur de Helmoltz. [0026] Le dispositif d'atténuation acoustique 102, et plus particulièrement l'atténuateur acoustique 106, est adapté à atténuer le bruit des gaz d'échappement en aval de la turbine du turbocompresseur 14. 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.
[0027] La partie formant écran thermique 104 peut notamment être réalisée en métal, comme en tôle d'acier inoxydable, par exemple. La réalisation en métal assure que la partie 104 remplit sa fonction d'écran thermique autour du carter turbine 30, ou tout du moins d'une portion de ce carter turbine 30. 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.
[0028] Bien entendu, le groupe motopropulseur 100 est adapté à être mis en œuvre dans un véhicule automobile. Of course, the powertrain 100 is adapted to be implemented in a motor vehicle.
[0029] L'invention n'est pas limitée aux exemples décrits mais est susceptible de nombreuses modifications accessibles à l'homme de l'art. The invention is not limited to the examples described but is capable of numerous modifications accessible to those skilled in the art.

Claims

REVENDICATIONS
1. Dispositif d'atténuation acoustique (102) pour circuit d'air suralimenté d'un moteur à combustion interne turbocompressé (12) caractérisé en ce qu'il comporte une partie (104) adaptée à former écran thermique autour d'une portion au moins du turbocompresseur (14) du moteur turbocompressé (12). 1. Acoustic attenuation device (102) for a supercharged air circuit of a turbocharged internal combustion engine (12), characterized in that it comprises a portion (104) adapted to form a heat shield around a portion at less turbocharger (14) of the turbocharged engine (12).
2. Dispositif d'atténuation acoustique selon la revendication 1 , comprenant un atténuateur acoustique (106), solidaire, de préférence monobloc, avec la partie formant écran thermique (104). 2. acoustic attenuation device according to claim 1, comprising an acoustic attenuator (106), integral, preferably integral, with the heat shield portion (104).
3. Dispositif d'atténuation acoustique selon la revendication 2, dans lequel l'atténuateur acoustique (106) est d'un type parmi un résonateur, un réflecteur de bruit aérien, un absorbeur de bruit aérien et un absorbeur à trou. An acoustic attenuation device according to claim 2, wherein the acoustic attenuator (106) is of one of a type of resonator, an airborne noise reflector, an airborne noise absorber and a hole absorber.
4. Dispositif d'atténuation acoustique selon la revendication 2, dans lequel l'atténuateur acoustique (106) est du type résonateur de Helmoltz. 4. acoustic attenuation device according to claim 2, wherein the acoustic attenuator (106) is of Helmoltz resonator type.
5. Dispositif d'atténuation acoustique selon l'une des revendications précédentes, dans lequel la partie formant écran thermique (104) est en métal, notamment en tôle d'acier inoxydable. 5. acoustic attenuation device according to one of the preceding claims, wherein the heat shield portion (104) is metal, in particular stainless steel sheet.
6. Groupe motopropulseur (100) comprenant un moteur à combustion interne turbocompressé (12) et un dispositif d'atténuation acoustique d'air suralimenté (102) selon l'une quelconque des revendications précédentes. A power train (100) comprising a turbocharged internal combustion engine (12) and a supercharged air acoustic attenuator (102) as claimed in any one of the preceding claims.
7. Groupe motopropulseur selon la revendication 6, dans lequel le dispositif d'atténuation acoustique (102) est adapté à atténuer le bruit des gaz d'échappement en aval de la turbine du turbocompresseur (14). 7. Power train according to claim 6, wherein the acoustic attenuation device (102) is adapted to attenuate the noise of the exhaust gas downstream of the turbine of the turbocharger (14).
8. Groupe motopropulseur selon la revendication 6 ou 7, dans lequel le dispositif d'atténuation acoustique (102) est fixé sur le carter de la turbine (30) du turbocompresseur (14). 8. Power train according to claim 6 or 7, wherein the acoustic attenuation device (102) is fixed on the casing of the turbine (30) of the turbocharger (14).
9. Groupe motopropulseur selon l'une des revendications 6 à 8, dans lequel la partie formant écran thermique (104) entoure au moins une portion du carter de la turbine (30) du turbocompresseur (14). 9. Power train according to one of claims 6 to 8, wherein the heat shield portion (104) surrounds at least a portion of the turbine housing (30) of the turbocharger (14).
10. Véhicule automobile comprenant un groupe motopropulseur (100) selon l'une quelconque des revendications 6 à 9. 10. A motor vehicle comprising a powertrain (100) according to any one of claims 6 to 9.
PCT/FR2013/052074 2012-09-18 2013-09-10 Noise attenuator acting as a heat screen for a supercharged combustion engine WO2014044950A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP13767045.1A EP2898200A1 (en) 2012-09-18 2013-09-10 Noise attenuator acting as a heat screen for a supercharged combustion engine
CN201380047709.0A CN104781520B (en) 2012-09-18 2013-09-10 Acoustical attenuators for the formation heat screen of engine with supercharger

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1258753 2012-09-18
FR1258753A FR2995633B1 (en) 2012-09-18 2012-09-18 ACOUSTIC ATTENUATOR FORMING THERMAL SCREEN FOR SUPERIMUM THERMAL MOTOR

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WO2014044950A1 true WO2014044950A1 (en) 2014-03-27

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PCT/FR2013/052074 WO2014044950A1 (en) 2012-09-18 2013-09-10 Noise attenuator acting as a heat screen for a supercharged combustion engine

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FR3066547A1 (en) * 2017-05-17 2018-11-23 Renault S.A.S SUPPLY AIR INTAKE SYSTEM IN A MOTOR VEHICLE INTERNAL COMBUSTION ENGINE COMPRISING A NOISE MITIGATION MODULE
CN109139232A (en) * 2017-06-16 2019-01-04 本田技研工业株式会社 It is provided with the internal combustion engine of turbocharger

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WO2004099576A1 (en) * 2003-05-02 2004-11-18 Owens Corning Mufflers with enhanced acoustic performance at low and moderate frequencies
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FR2933138A3 (en) * 2008-06-25 2010-01-01 Renault Sas Thermal protection device for peripheral unit of e.g. spark ignition engine, has fixation units traversing orifices of monoblock thermal screen, and connecting turbine block and case that is interposed between turbine and compressor blocks

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DE19818873A1 (en) * 1998-04-28 1999-11-11 Man B & W Diesel Ag Silencer for large high-power diesel internal combustion engine
US6510833B1 (en) * 2001-12-20 2003-01-28 American Diesel & Gas, Inc. Fuel saving combustion engine insulation method and system
WO2004099576A1 (en) * 2003-05-02 2004-11-18 Owens Corning Mufflers with enhanced acoustic performance at low and moderate frequencies
DE10323731A1 (en) * 2003-05-24 2004-12-09 Daimlerchrysler Ag Exhaust turbocharger for an internal combustion engine with temperature-loaded turbine casing, has shield element to reduce heat transfer between turbine casing and surrounding area
FR2933138A3 (en) * 2008-06-25 2010-01-01 Renault Sas Thermal protection device for peripheral unit of e.g. spark ignition engine, has fixation units traversing orifices of monoblock thermal screen, and connecting turbine block and case that is interposed between turbine and compressor blocks

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3066547A1 (en) * 2017-05-17 2018-11-23 Renault S.A.S SUPPLY AIR INTAKE SYSTEM IN A MOTOR VEHICLE INTERNAL COMBUSTION ENGINE COMPRISING A NOISE MITIGATION MODULE
CN109139232A (en) * 2017-06-16 2019-01-04 本田技研工业株式会社 It is provided with the internal combustion engine of turbocharger
CN109139232B (en) * 2017-06-16 2020-01-07 本田技研工业株式会社 Internal combustion engine provided with turbocharger

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CN104781520A (en) 2015-07-15
FR2995633B1 (en) 2018-04-13
EP2898200A1 (en) 2015-07-29
FR2995633A1 (en) 2014-03-21
CN104781520B (en) 2018-04-03

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