Brennstoffeinspritzventil

摘要

A fuel injection valve (1), in particular an injection valve for fuel injection units on internal combustion engines, comprises a piezoelectric or magnetostrictive actuator (3) and a valve closing body (18) operated by the actuator by means of a valve needle (17), said body forming a seal with the valve seating surface (19). To compensate for expansion due to temperature there is at least one damping body (25a, 25b) which is made of a solid that remains virtually static when subjected to a high deformation speed and is elastically or plastically deformable when subjected to a slow deformation speed.