Patent ID: 8919315

Claim:
An intake manifold ( 2 ) of comburent air for an internal combustion engine ( 1 ) having a recirculating conduit ( 60 ) of exhaust gases, wherein the intake manifold ( 2 ) comprises a box casing, which includes a substantially tub-shaped body ( 20 ) fixable to the head of the internal combustion engine and a lid ( 21 ) fixed to the tub-shaped body ( 20 ), a first inlet mouth ( 213 ) provided through a lateral wall of the lid ( 21 ) and configured to be placed in communication with a supply line ( 4 ) of the comburent air, a second inlet mouth ( 214 ) provided through the lateral wall of the lid ( 21 ) parallel to the first inlet mouth ( 213 ) and configured to be placed in communication with the recirculating conduit ( 60 ) of the exhaust gases, and a plurality of outlet mouths ( 201 ) each provided in the tub-shaped body ( 20 ) and configured to be placed in communication with a respective cylinder ( 10 ) of the internal combustion engine ( 1 ), at least a wall ( 7 ) having a perimeter edge constrained removably by clamping between the tub-shaped body ( 20 ) and the lid ( 21 ), and seal elements ( 8 ) interposed between the perimeter edge of the wall ( 7 ) and, respectively, the tub-shaped body ( 20 ) and the lid ( 21 ), the wall ( 7 ) is positioned in front of each of the outlet mouths ( 201 ) and divides an internal volume of the intake manifold ( 2 ) into two chambers ( 215 , 204 ), the first chamber ( 215 ) being placed in communication with the first inlet mouth ( 213 ) and the second inlet mouth ( 214 ) and the second chamber ( 204 ) being placed in communication with the outlet mouths ( 201 ), the wall ( 7 ) defining a single opening ( 70 ), which is positioned in a distal zone from the first and second inlet mouth ( 213 , 214 ) and permits the first chamber ( 215 ) and the second chamber ( 204 ) to be in communication with each other, wherein the seal elements ( 8 ) include two distinct annular seals fixed on opposite sides of the wall ( 7 ).