Abstract: An object of the invention is to achieve sufficient atomization, while preventing a spray from spreading. A fuel injection valve includes a plurality of swirl fuel injection passages. Each of the swirl fuel injection passages includes a swirl chamber, a swirl chamber introduction passage, and an orifice and imparts a swirling force to fuel to thereby inject the fuel outside. A rectangular coordinate system is imagined on an imaginary plane. The rectangular coordinate system has a center of an inlet opening surface of the orifice as an origin and has an X-axis extending in parallel with a centerline of the swirl chamber introduction passage and being positive in a direction from an upstream side toward a downstream side of the swirl chamber introduction passage and a Y-axis extending perpendicularly to the X-axis and being positive in a direction away from the centerline.

Abstract: An object of the present invention is to provide a fuel injection valve that imparts swirl upstream of a seat portion and shortens a spray penetration. At injection holes set adjacent to an injection hole and at injection holes set adjacent otherwise, nonuniform pitch angles ?1 and ?2 among the holes as well as stronger flows into the injection holes by a smaller angle ? due to a smaller inflow angle ?1 of a fluid into the injection holes can shorten the spray penetration at the injection hole.