A moving-coil electromagnetic actuator, particularly for a control valve, with resilient element incorporated in the coil

摘要

An electromagnetic actuator, particularly for a valve for controlling the injection of fuel or fuel oil is described and comprises: a fixed permanent magnetic core (12), and an electrical control winding (14) which is disposed in the magnetic field generated by the core (12) and is movable relative to the core when an electrical current flows through the winding, in which the winding (14) is intended to be connected to a movable member (24) actuable by the device, in a manner such as to bring about movement of the movable member (24) between a rest position and at least one operative position. The winding (14) is also arranged to act on the movable member (24) by exerting a resilient force which can hold the member (24) in the rest position or return the member to the rest position. <IMAGE>