| 摘要 |
The valve has an air inlet flap placed in an air inlet pathway. An actuation unit formed of toothed crown ring (12) and a control wheel (50) is controlled by a control unit formed of electric motor, pinion, intermediate toothed wheel (9) and peripheral teeth. The actuation unit drives the flap from an open position to a closed position with temporal phase shift such that the flap remains in the open position under action of return spring. The actuation unit has a return end-stop to return the flap to the open position under an action of the control unit in case of failure of the spring. |
