Patent ID: 8794549

Claim:
A fuel injection valve of an internal combustion engine, comprising: a nozzle main body; a needle valve that reciprocates in the nozzle main body; and a plate that has at least two fuel injection holes that are blocked when an outer peripheral surface of the needle valve contacts with an inner peripheral surface of the nozzle main body, wherein a recess is formed from a rim of an entrance to a rim of an exit of at least one of the fuel injection hole in an upstream inner wall of the injection hole in a fuel flow direction along an inner wall surface of the plate, and wherein the at least two injection holes including an upstream injection hole and a downstream injection hole are formed in the fuel flow direction along the inner wall surface of the plate, and a maximum radius of curvature of the recess that is formed in the downstream injection hole is smaller than a maximum radius of curvature of the recess that is formed in the upstream injection hole.