Exhaust gas intake valve for internal combustion engine of motor vehicle, has circular head including peripheral annular flat deflector screen on given angular sector in manner to increase dimensions of head along given direction

摘要

The valve (55) has a shank and a circular head including a peripheral annular flat deflector screen (59) on a given angular sector in a manner to increase dimensions of the head along a given direction, where the angular sector is lower than or equal to 180 degree. The screen is movable in rotation around the circular head and has reduced thickness. A counterweight is fixed at the center of the screen. The screen is displaced in a groove of the circular head.