Patent ID: 8794550
Filing Date: 2014-08-05
Classification: F02M

Abstract:
1. A fuel injection valve including: a needle housed in a valve body in a reciprocable manner; an injection hole plate attached to a front end portion of the valve body, the injection hole plate having at least one injection hole connecting an inside and an outside of the valve body; and a valve sheet which the needle is attached to or detached from so as to close or open a fuel flow path that reaches the injection hole in the injection hole plate through an outer circumference of the needle, wherein the injection hole plate has a recessed portion dented in an axial direction of the needle so as to cause fuel flowing toward the injection hole through the valve sheet to descend lower than a height of an inlet port of the injection hole and then, to turn to ascension so as to reach the inlet port of the injection hole on the injection hole plate, wherein the injection hole plate has the injection hole at a position separated from a center outward in the radial direction with respect to the injection hole plate, and an upstream side of the injection hole partially cut out for the inlet port of the injection hole to have a difference of altitude with respect to a normal direction of the injection hole plate having the injection hole such that a side closer to the center is lower than a side further from the center.