Patent ID: 7828232

Claim:
A fuel injection valve comprising: a valve body that has a valve seat; a nozzle plate that is located on an injection side of the valve body, the nozzle plate having a nozzle hole, through which fuel is injected from the injection side of the valve body; and a sleeve that includes a cylindrical portion and a bottom portion and partially covers an end of the nozzle plate on an opposite side of the nozzle plate with respect to the valve body, wherein the bottom portion of the sleeve has an opening on the opposite side of the nozzle plate with respect to the valve body, the opening being defined by an inner circumferential periphery, through which fuel, which is injected from the nozzle hole, passes, and the sleeve has at least one groove that extends from the inner circumferential periphery outwardly in a substantially radial direction of the bottom portion of the sleeve to an outer circumferential periphery of the bottom portion of the sleeve, the cylindrical portion extends from the outer circumferential periphery of the bottom portion of the sleeve in an axial direction opposite from a fuel injection direction, the cylindrical portion has an outer circumferential periphery on a radially outer side thereof, and the at least one groove further extends along the outer circumferential periphery of the cylindrical portion in said axial direction opposite from the fuel injection direction.