Actuator acting as a drive unit for an injector and method for the production of said injector

摘要

An actuator ( 1 ) acts as a drive unit for an injector, especially for an accumulator injection system. The actuator comprises a piezostack ( 3 ) disposed in a tube spring, a top plate ( 2 ) and a bottom plate. The top plate ( 2 ) of the actuator is directly fixed to the injector housing ( 7 ) by means of caulked areas. The caulking enables the injector to be produced in a simple and economical manner.