SOLENOID FUEL INJECTION VALVE FOR INTERNAL COMBUSTION ENGINE

摘要

PURPOSE:To make it possible to reduce longidutinal dimensions and weight of a valve by forming a cylindrically-shaped plunger having a bottom and fastening the plunger to a needle valve and installing the plunger so that its cylindrical portion may face the periphery of the needle valve's bearing provided inside the cylinder. CONSTITUTION:A nozzle 10 is provided with a bearing which offers a sliding support to a needle valve 12 and guides the movement of the needle 12. A plunger 13 is fastened to the top of a needle valve and forms a cylinder having a bottom. The cylindrical part 13a is installed so as to face the pheriphery of the bearing of the nozzle 10. This construction allows the bearing of the needle 12 to approach the center of a magnetic coil 3 inside the cylindrical part 13a of the plunger 13 and reduce the total dimension of the valve.