Patent ID: 6367720
Filing Date: 2002-04-09
Classification: F02M

Abstract:
An electromagnetic fuel injection valve comprising:a valve body having a valve closing portion provided in one end portion and opening and closing a fuel passage by being in contact with or apart from a valve seat, and a first member comprising a plunger provided in another end portion of said valve body and forming a magnetic passage; a core member provided so as to form a first gap portion in a direction of a valve axis with respect to said plunger; a coil wound around an outer periphery of said core member; a second member provided in an outer peripheral portion of said plunger so as to form a second gap portion between the plunger and the second member in a direction crossing the valve axis; and a magnetic passage formed in said core member, said first and second members and said first and second gap portions, wherein an energizing state to said coil is changed so as to drive said valve body in the direction of the valve axis, thereby injecting the fuel, and wherein a guide portion for guiding a movement of the plunger in the direction of the valve axis of said valve body is provided in said second member.