Patent ID: 8919674
Filing Date: 2014-12-30
Classification: F02M

Abstract:
1. A fuel injection valve comprising a valving element that opens and closes a valve seat, and, when opening the valve seat with the valving element, allowing fuel to pass through between the valving element and a valve seat surface and to be injected from plural holes provided in an injection hole plate attached at a downstream side of the valve seat, wherein the holes provided in the injection hole plate are combined injection holes formed by partially overlapping two or more single injection holes from an upstream side to a downstream side of the injection hole plate, each of the single injection holes is a circular hole having the same diameter in an entrance part at the upstream side and an exit part at the downstream side of the injection hole plate, at least one of the single injection holes has an injection hole angle α defined by a tilt angle of a center axis line connecting an entrance part center and an exit part center relative to a plate thickness direction of the injection hole plate, intersection angles β are provided so that, if center axis lines of the respective single injection holes forming the combined injection holes are projected on a plane orthogonal to a valve seat axis, the center axis lines of the respective single injection holes may intersect, and thereby, areas of exit parts are larger than areas of entrance parts in the combined injection holes, and the combined injection holes are formed by press working.