Fuel injection valve for direct fuel-injection IC engine has piezoelectric or magnetostrictive actuator coupled to valve closure element via valve needle with operating sleeve between actuator and valve needle

摘要

The fuel injection valve (1) has a piezoelectric or magnetostrictive actuator (32) for operation of a valve closure element (11), cooperating with a valve seat (12), via a valve needle (10). The end face (33) of the actuator cooperates with a disc-shaped support body (20) having at least one opening (24a) for passage of a segment (25a) of an operating sleeve (26), extending between the opposite end of the actuator and the valve needle.