Device for establishing noise in a motor vehicle

Abstract

In a device for establishing noise in a motor vehicle, comprising a housing which is divided by a sound transmission device into at least two spaces, of which one space is in communication with a gas-carrying part of an internal combustion engine arranged in the motor vehicle and the other space is acoustically coupled to an interior space of the motor vehicle via an outlet line, the outlet line is connected via a hollow rigid deflecting element to an interior space lining element, the rigid deflecting element being capable of transmitting forces applied thereto by the sound radiation to the interior space lining element.

1 . A device for establishing noise in a motor vehicle, comprising a housing ( 5 ), a sound transmission device ( 6 ) disposed in the housing ( 5 ) so as to divide the housing ( 5 ) into at least two spaces ( 7 ,  8 ), an inlet line ( 3 ) extending between one of said spaces ( 7 ) and a gas-carrying part ( 1 ) of an internal combustion engine ( 2 ) arranged in the motor vehicle so as to be in communication with the gas carrying part ( 1 ) and an outlet line ( 9 ) connected to the other space ( 8 ) of the housing ( 8 ) for acoustically coupling the other space ( 8 ) to an interior space ( 10 ) of the motor vehicle, said outlet line ( 9 ) being connected to an interior lining element ( 12 ) of the motor vehicle via a hollow rigid deflecting element ( 11 ) formed in such a way that it is capable of transmitting forces applied to it to the interior space lining element ( 12 ) for transmitting the sound radiation into the interior space ( 10 ) of the motor vehicle.  
   
   
       2 . The device as claimed in  claim 1 , wherein a flexible connecting element ( 13 ) is arranged between the outlet line ( 9 ) and the deflecting element ( 11 ).  
   
   
       3 . The device as claimed in  claim 1 , wherein an absorption material ( 15 ) is arranged at the transition from the deflecting element ( 11 ) to the interior space ( 10 ).  
   
   
       4 . The device as claimed in  claim 1 , wherein a constricting element ( 16 ) is arranged at the transition from the deflecting element ( 11 ) to the interior space ( 10 ).  
   
   
       5 . The device as claimed in  claim 1 , wherein a widening element ( 21 ) is arranged at the transition from the deflecting element ( 11 ) to the interior space ( 10 ).  
   
   
       6 . The device as claimed in  claim 1 , wherein the deflecting element ( 11 ) is angled by at least approximately 90°.  
   
   
       7 . The device as claimed in  claim 1 , wherein the interior space lining element ( 12 ) is acoustically decoupled from an interior vehicle lining ( 14 ) at least partly lining the interior space ( 10 ) or from a dashboard arranged in the interior space ( 10 ).  
   
   
       8 . The device as claimed in  claim 7 , wherein the deflecting element ( 11 ) includes a hollow body ( 17 ).  
   
   
       9 . The device as claimed in  claim 8 , wherein the hollow body ( 17 ) has two separate volumes ( 19 ,  20 ), which are in communication with each other.  
   
   
       10 . The device as claimed in  claim 8 , wherein the hollow body ( 17 ) is connected to the interior space lining element ( 12 ) via at least one rigid connecting element ( 18 ).