Piezoelectric actuator for fuel injection valve, particularly injector for fuel injection system, has actuator body and lamination is applied partly on outer surface of actuator body and delamination gap is partially filled with lamination

摘要

The piezoelectric actuator (2) has an actuator body (13). A lamination (41) is applied partly on an outer surface (40) of the actuator body. A delamination gap is partially filled with the lamination, which is extended from outer surface in the actuator body. The delaminated gap is filled in undilated condition of the actuator body with the lamination body.