Patent ID: 8413641

Claim:
Intake manifold ( 4 ) with integrated canister circuit ( 22 ) for a supercharged internal combustion engine ( 1 ) provided with a compressor ( 14 ) adapted to compress the intake air; the intake manifold ( 4 ) comprises: a tubular body ( 30 ) in which a plenum ( 25 ) is defined, which presents an inlet opening ( 31 ) connected to an intake pipe ( 6 ) along which the compressor ( 14 ) is arranged and a number of outlet openings ( 32 ) towards the cylinders ( 3 ) of the internal combustion engine ( 1 ); a sorting chamber ( 34 ), which is obtained in a wall ( 33 ) of the tubular body ( 30 ) and presents an open upper end ( 35 ); a canister solenoid valve ( 26 ), which is arranged in the sorting chamber ( 34 ) to close the open upper end ( 35 ) and is adapted to adjust the introduction of gasoline vapours coming from a fuel tank ( 23 ) inside the sorting chamber ( 34 ) itself; a first pipe ( 39 ), which is obtained in the wall ( 33 ) of the tubular body ( 30 ), puts the sorting chamber ( 34 ) into communication with the plenum ( 25 ), and defines a first branch ( 28 ) of a recovery pipe ( 24 ); a second pipe ( 40 ), which is obtained in the wall ( 33 ) of the tubular body ( 30 ), puts the sorting chamber ( 34 ) into communication with the intake pipe ( 6 ) upstream of the compressor ( 14 ), and defines an initial portion of a second branch ( 29 ) of the recovery pipe ( 24 ); a first one-way valve ( 27 a ), which is arranged in the sorting chamber ( 34 ) in correspondence of the first pipe ( 39 ) and allows only a flow towards the plenum ( 25 ) through the first pipe ( 39 ); a second one-way valve ( 27 b ), which is arranged in the sorting chamber ( 34 ) in correspondence of the second pipe ( 40 ) and allows only a flow towards the intake pipe ( 6 ) through the second pipe ( 40 ).