| 摘要 |
<p>A servo-assisted butterfly valve (1) for an internal combustion engine comprising a valve seat (4), a butterfly body (5) engaging the valve seat (4), a shaft (6) on which the butterfly body (5) is keyed, an electric actuator (3) coupled to the shaft (6), an elastic member (23) which is adapted to exert a torque on the shaft (6) which tends to rotate the butterfly body (5) towards a limp-home position and an abutment body (29) which comprises an eccentric member (35) which forms an abutment surface for an abutment member (28) of the elastic body (23) in order to stop, in the desired limp-home position, the rotation of the butterfly body (5) caused by the elastic body (23) in the absence of action by the electric actuator (3). <IMAGE></p> |
