Fuel injection valve esp. for fuel injection systems of IC engines with piezo-electric or magneto-strictive actuator and valve closing body operable by valve needle working with valve

摘要

The lifting unit (14) is a hermetically sealed unit compared to a valve inner chamber (41) and an housing (15) of the lifting unit (14), has at least one flexible section (16,17) in an axial direction. The housing (15) has a locally fixed section (42) connected with a valve housing (13) and first and second flexible sections (16,17). So that the first flexible section (16) is connected with the fixed section (42) and the first stroking piston (21) and the second flexible section (17) with the locally fixed section (42) and the second stroking piston (23) or is connected fixed by the valve needle (20) operated by the second stroking piston (23).