Injector i.e. fuel injector, for common rail fuel injection system of self-ignition engine, has valve seat and closure connected with chamber and throttle connected upstream of deflecting unit, where rotational flow is stamped to fluid flow

摘要

The injector has an actuator module (4) controlling a valve seat (2) and a spherical closure (3) for adjusting flow of fluid medium. The valve seat and the closure are connected with a control chamber (9) over a diffuser (5), a throttle (7) and a throttle inlet (8) for controlling a control piston (10). The throttle is connected upstream of a deflecting unit designed as a rib or a groove, where rotational flow is stamped to the fluid flow by the deflecting unit. The deflecting unit is arranged in the throttle inlet and exhibits a swirl-producing geometry.