Device for controlling fluid addition, especially applicable to fuel injection, has a hydraulic based controller system for regulating the opening and closing of the fuel injection nozzle

摘要

The device has a drilled channel (4) leading from a casing (1) to a nozzle (10) submitted to a fluid pressure. A lifting device (7) slides in the channel and has a sealing element (17) to close the nozzle. A primary position controller (6) controls the raising and lowering of the lifting device using a hydraulic chamber (2). An Independent claim is made for a procedure for controlling the opening and closing of the nozzle.