Patent ID: 8328121

Claim:
A multi hole injection type fuel injection valve for an internal combustion engine having multi injection holes that inject fuel in multiple directions, inlets of the multi injection holes being arranged on a common circumferential line around a center line of an injection valve main body so a space surrounded by the fuel sprays injected from the multi injection holes is formed so that air flows between adjacent fuel sprays from outside to inside of the space surrounded by the fuel sprays, wherein each of the multi injection holes has an inclination angle with respect to a center line of the injection valve main body as well as the inclination angle of each of the injection holes and is provided with a predetermined offset amount so that a center of gravity position of each of the fuel sprays injected from the multi injection holes is oriented in a target direction, the center of gravity position of each of the fuel sprays is obtained by the amount of each of the fuel sprays injected onto a plane corresponding to a position of an ignition plug, and the predetermined offset amount is set based on a correction amount for correcting positional drift with respect to the target direction of the center of gravity position of the fuel spray.