SOLENOID FUEL INJECTION VALVE AND INTERNAL COMBUSTION ENGINE

摘要

PROBLEM TO BE SOLVED: To provide a fuel injection valve capable of responding to purposes such as cost reduction by simplification of a part, a sure fuel seal, reduction of a fluctuation in an injection quantity characteristic by an improvement in assembling accuracy and the realization of high efficiency of a magnetic circuit in a solenoid fuel injection valve suitable as a cylinder injection fuel injection valve. SOLUTION: A nozzle holder 9 having diametrally small nozzle parts 9a to 9d and diametrally large anchor core support parts 9f to 9j formed by a pipe drawing process are joined to a core 6, a structure is adopted for performing laser welding over one round of a joining boundary part, and a fuel connector pipe 3 having a diameter smaller than the anchor core support parts 9f to 9j is joined to an end part on the opposite side of the nozzle port side of the core 6.