FUEL INJECTION VALVE AND MOUNTING METHOD OF SAID VALVE

PURPOSE:To enable high-precise setting of a distribution flow rate ratio of fuel even if a machining error on the shape and the position of each hole is produced, by a method wherein by relative rotation of a relative position between a through-hole and a plurality of injection holes, a distribution flow rate ratio of fuel is regulated. CONSTITUTION:A title fuel injection valve comprises a body 5, having a through- hole 5c through which to output fuel, a valve body 6, controlling a flow rate of outputted fuel by opening and closing the through-hole 5c, and a nozzle 7 having injection holes 8a and 8b securely which is mounted to the body 5 and by which to divide fuel, outputted through the through-hole 5c, into given flow rate ratios for injection. A conical taper part 5d, formed in a part of the end part of the body 5, and a projection part 7c, provided on a part of the end part of the nozzle 7, brought into contact with the taper part 5d for plastic deformation during mounting, are provided. This constitution enables employment of a mounting method wherein the body 5 and the nozzle 7 are relatively rotated about a central axis, and the body 5 and the nozzle 7 are relatively secured in a position allowing the injection holes 8a and 8b to divide fuel into given flow rate ratios.