Patent ID: 7958871

Claim:
A combustion air supply arrangement comprising: an air intake duct ( 1 ) of an internal combustion engine ( 2 ), said air intake duct ( 1 ) comprising: a compressor ( 3 ) the rotational speed of which is directly dependent on the rotational speed of the internal combustion engine ( 2 ); a first throttle ( 8 ) located between the compressor ( 3 ) and the internal combustion engine ( 2 ) and arranged to change the flow area of said air intake duct ( 1 ) between the compressor ( 3 ) and the internal combustion engine ( 2 ) in response to the operation of a gas pedal; and a second throttle ( 9 ) which is located upstream the compressor ( 3 ) and arranged to change the flow area of the air intake duct ( 1 ) upstream the compressor ( 3 ) in response to a pressure detected by a pressure sensing device ( 10 ) located in the air intake duct between the first throttle ( 8 ) and the engine ( 2 ), wherein the second throttle ( 9 ) upstream of the compressor ( 3 ) is closed in consequence of a negative pressure detected in the air intake duct ( 1 ) resulting from closing the first throttle ( 8 ) downstream of the compressor ( 3 ) upon release of the gas pedal, and wherein in the closed modes of the first ( 8 ) and second ( 9 ) throttles air at super-charged pressure is stored in an air pressure storage tank ( 13 ) arranged to communicate with the air intake duct ( 1 ) via a valve ( 15 ) arranged downstream of the compressor and upstream of the first throttle ( 8 ).