| 摘要 |
A fuel injector (100) is disclosed. It comprises a valve (120) with a needle (135) that is movable along a longitudinal axis (105) between an open position (140) and a closed position (145), for opening or closing the valve (120); an actuator (125) which comprises an armature (155) and a pole piece (250), the armature (155) is axially movable and operable to interact mechanically with the needle (135), so that the needle (135) is moved towards the open position (140) by a movement of the armature (155) in axial direction towards the pole piece (250); and a first spring (220) for biasing the armature (155) in axial direction away from the pole piece (250). The first spring (220) is configured and operable to stop said movement of the armature (155) by means of its spring force when the needle (135) is in the open position (140). |
