Abstract: An opening intersection point is between a nozzle hole axis and an inlet opening portion. A normal line of a suction wall surface at the opening intersection point intersects a nozzle hole inner wall or an imaginary inner wall which is an extension of the nozzle hole inner wall. A distance from an outlet opening portion to an inner wall intersection point, which is an intersection point between the normal line and the nozzle hole inner wall or the imaginary inner wall, is LA. An nozzle hole length between the inlet opening portion and the outlet opening portion of the nozzle hole inner wall on a side where the inner wall intersection point is formed is LB. The nozzle hole is provided such that LA/LB>?0.2.

Abstract: At least one of nozzle holes is provided as a non-circular nozzle hole where the ratio of the longest diameter to the shortest diameter of an outlet opening portion is greater than 1. A virtual non-circular cone and a virtual circular cone are defined for each of the non-circular nozzle hole and a circular nozzle hole where the ratio of the longest diameter to the shortest diameter of the outlet opening portion is 1. At least two adjacent nozzle holes are formed such that the virtual non-circular cone does not interfere with the virtual circular cone or the virtual non-circular cone.

Abstract: A fuel injector is disclosed that includes a valve body with a plurality of nozzle holes for injecting fuel in a hollow spray from the fuel injector. The plurality of nozzle holes each include an outlet. The valve body also includes at least one air-introducing aperture with an air outlet port positioned between the outlets of the plurality of nozzle holes. The air-introducing aperture is operable for introducing air into a hollow area of the hollow spray.

Abstract: A fuel injector is disclosed that includes a valve body with a plurality of nozzle holes for injecting fuel in a hollow spray from the fuel injector. The plurality of nozzle holes each include an outlet. The valve body also includes at least one air-introducing aperture with an air outlet port positioned between the outlets of the plurality of nozzle holes. The air-introducing aperture is operable for introducing air into a hollow area of the hollow spray.