Patent ID: 8272834

Claim:
A compressor housing ( 3 ) for accommodating a compressor wheel ( 9 ), the compressor housing ( 3 ) having an inlet ( 2 ) and an outlet ( 13 ), each being defined by at least in part by a respective wall ( 14 ; 31 ) provided integrally with said compressor housing ( 3 ), the inlet ( 2 ) further comprising a ported shroud arrangement ( 15 , 16 , 17 ) that comprises a wall portion ( 15 ) spaced interiorly to the wall ( 14 ) of the inlet ( 2 ), wherein at least one acoustic damper element ( 1 ) is disposed on the outside of the wall ( 14 ) of the inlet ( 2 ), characterized in that the at least one acoustic damper element ( 1 ) disposed on the outside wall ( 14 ) of the inlet ( 2 ) is a pulsation type damper element, and wherein the at least one acoustic damper element ( 1 ) disposed on the outside of the wall ( 14 ) of the inlet ( 2 ) is at an axial position corresponding to the ported shroud arrangement ( 15 , 16 , 17 ).