THROTTLE VALVE

摘要

A throttle valve (1) for an inlet of an internal combustion piston engine comprising an aperture (9) adapted to be variably opened and closed between a first fully opened configuration and a second near closed configuration. The aperture (9) is variably opened and closed by a plurality of coplanar plates (10) mounted about the periphery of the aperture and movable towards the central region of the aperture.