Injector nozzle for internal combustion engine, has control valve controlling control pathway that hydraulically couples control surface with sliding surface based on pressure difference between control surface and sliding surface

摘要

The nozzle has a needle for controlling injection of fuel. A sliding piston is drive coupled with an actuator and a coupler piston. The sliding piston comprises a sliding surface (12) that is hydraulically coupled with a coupler surface. A control valve controls a control pathway that hydraulically couples a control surface with the sliding surface based on the pressure difference between the control surface and the sliding surface.