Fuel injection apparatus for an internal combustion engine

摘要

Fuel injected from the cylindrical hole of a valve body passes through holes of an orifice plate and fuel holes of an assist sleeve. Collided and thus diverted first air flows collide with second air flows so as to sandwich fuel flows therebetween in a space at the upstream portions of the fuel holes. Each fuel flow is finely atomized while yet still maintaining directional control effected by the upstream orifice plate holes. Wall flow along the inner wall of a flow separator is suppressed, thus providing a fuel spray with improved atomization.