FLUID INJECTION DEVICE

摘要

The invention relates to a fluid injector having a main lengthwise axis and comprising at least the following: a nozzle extending longitudinally along said axis and having a seat and at least one injection orifice for the exit of the fluid from the nozzle, the injection orifice communicating with a fluid supply duct; a needle that is movable axially inside the nozzle and has, along said axis, a first or free end defining a valve with the seat of the nozzle, in an area of contact between these. According to the invention, the nozzle extends, axially towards its free end, past the first end of the needle, where it comprises, perpendicular to this axis, a check wall where said seat is defined.