Patent ID: 6868841

Claim:
A deflector by-pass valve for engine exhaust gas for use with an exhaust gas recirculation system comprising a multiform block ( 1 ) having a flange ( 2 ), two side walls ( 4 ) and ( 5 ) disposed perpendicularly to the flange ( 2 ), an intermediary wall ( 6 ) disposed within an interior of the block for dividing the interior into two adjacent compartments ( 7 ) and ( 8 ), open at the flange and interconnected by a circular opening ( 9 a ) in the intermediary wall ( 6 ), the circular opening ( 9 a ) of the intermediary wall( 6 ) positioned in alignment with the openings ( 9 ) on the two side walls ( 4 ) and ( 5 ) which define gas passages for receiving the exhaust gas from the engine; the opening ( 9 a ) on the central wall providing two through holes positioned in diametrically opposite directions along a width of the body, for receiving bearing means ( 11 ), a crossover shaft ( 10 ) located in the opening ( 9 a ) and rotationally supported by the bearing means, an end of the shaft ( 10 ) connected to a plate ( 12 ) equipped with a perpendicular pawl ( 13 ), which acts as a limiter of the rotary motion through engagement of the plate ( 12 ) on a shoulder ( 14 ) located on the block; valve means fixed to the shaft ( 10 ) for blocking/releasing the gas passage in correspondence to the rotation of the shaft, the body having a support ( 16 ) for an actuator ( 17 ), to which an axial rod ( 18 ) is connected, extending up to the plate ( 12 ), having an end articulated to an eccentric point ( 19 ) in relation to a point of connection of the shaft ( 10 ), the rod ( 18 ) converting rectilinear motion of the shaft ( 10 ) into a circular motion for moving the valve means, the body having two ducts ( 20 ), one for admission and one for return of a liquid coolant for cooling the valve means.