FUEL INJECTOR SERVOVALVE

摘要

A fuel injector servovalve (5) has a control chamber and a fixed stem (38), on which a slidable sleeve (41) is fitted; the sleeve ' (41) is actuated by a spring (23) and by an electromagnet (16) for opening/closing a discharge duct outlet made on the side surface (39) of the fixed stem; the servovalve has a lamina (13), which is located between the core (19) of the electromagnet and an armature (17) coupled to the sleeve (20); when the armature (17) is attracted into the end-of -travel position by the electromagnet, the lamina is located in axial contact against a surface of the armature and against a surface of the core, and there are gaps for the fuel in the axial direction between such surfaces.