Patent ID: 7431558

Claim:
An air intake having at least one inlet port area ( 22 , 23 ) and one outlet port area ( 21 , 24 ) with at least one structure ( 13 , 14 ) arranged in the outlet port area ( 21 , 24 ) and the at least one structure may be flowed through and around, the structure ( 13 , 14 ) includes an opening ( 25 ) and the structure ( 13 , 14 ) includes a span ( 35 ) in the flow direction in a ratio between 0.35 times and 0.50 times a corresponding span ( 33 ) of the inlet port area ( 22 , 23 ) wherein the structure ( 13 , 14 ) comprises a substantially annular wall ( 13 ) defining the opening ( 25 ) and wherein the clear cross-section of the opening ( 25 ) comes to between 0.1 times and 0.3 times the clear cross-section of the outlet port area ( 21 , 24 ).