Exhaust gas recirculation valve device for turbo supercharger of automobile, has valve element whose rotational angle, in which valve element is perpendicular to wall of recirculation flow passage, is set as rotational angle of zero degrees

摘要

The device (100) has an electrical actuator (7) driving a valve element (4) against the force of a return spring (6), where an initial position of the valve element, in which a rotational movement of the valve element caused by the return spring stops, is defined at a predetermined opening degree of the valve element. The predetermined opening degree is different from zero degree. A rotational angle of the valve element in which the valve element is perpendicular to an inner circumference wall of an exhaust gas recirculation flow passage (1), is set as a rotational angle of zero degrees.