Patent ID: 6976643

Claim:
A fuel injection device, comprising: a valve body having an injection hole and a valve seat formed on an inner peripheral surface thereof on a fuel inlet side of the injection hole; a valve member including a contacting portion forming a sealing portion together with the valve seat and a movable core disposed at an end of the valve member opposite from the contacting portion, wherein fuel injection from the injection hole is allowed if the contacting portion separates from the valve seat and the fuel injection is stopped if the contacting portion is seated on the valve seat; and guiding means for guiding the valve member so that the valve member can reciprocate in an axial direction of the fuel injection device, wherein the guiding means is formed with an inner surface of the valve body and an outer surface of the valve member, which slides in contact with the inner surface of the valve body, wherein the fuel injection device is formed so that arbitrary virtual perpendicular lines, which cross the sealing portion and are perpendicular to the inner peripheral surface of the valve body providing the valve seat, intersect with each other at an intersecting point, which is positioned between a first end of the guiding means on a sealing portion side and a second end of the guiding means opposite from the sealing portion, and a distance in the axial direction between the sealing portion and an end of the movable core opposite from the sealing portion is equal to or less than 18 millimeters.