PIEZOELECTRIC ACTUATING MECHANISM FOR A FUEL INJECTOR OF AN INTERNAL COMBUSTION ENGINE, AND USE THEREOF

摘要

The invention relates to the temperature compensation in a piezoelectric actuating mechanism comprising a sleeve-type housing arrangement (12) and a piezoelectric actuator arranged therein. According to the invention, an outer peripheral surface (18) of the housing arrangement (12) comprises at least one recess (20) in which at least one thrust element (22) is received in an axially corresponding manner or with negligible axial play, said thrust element being formed from a material that has a higher thermal expansion coefficient than the housing arrangement (12) material adjacent to the recess (20).