Injection valve, especially for internal combustion engine, has control gradient of control exerted by valve control unit on piezoelectric actuator dependent on fluid feed pressure

摘要

The device has at least one nozzle module (3) with an injection nozzle and fluid feed line and a valve control module (2) that interacts with the nozzle module and has at least one valve closure element (16) and a piezoelectric actuator (12) for operating the closure element. The control gradient of the control exerted by the valve control unit on the piezoelectric actuator is dependent on the fluid feed pressure.