Fuel injection valve unit with direct injection function used in IC engines

摘要

The valve unit has a base (11) in which a fuel injection nozzle (10) is formed. A needle valve (12) is arranged on the base. The nozzle is opened/closed by moving the valve vertically. A rotary object (13) is provided to give vortex movement to the fuel passing through the nozzle. A planar gap (12e) which is perpendicular to the needle axis is formed at end point of the needle valve.