Patent ID: 7124735

Claim:
A fuel injection valve comprising: a nozzle body provided with an injection hole therein; a valve body for opening and closing a fuel passage from said injection hole relative to said nozzle body; a drive means for driving said valve body; and a protrusion having a semicircular-shaped opening continuous to said injection hole of said nozzle body, part of a side opened continuous to an extreme end on the downstream side thereof, binding walls formed on both sides continuous from said opening to a diametrical direction, and a turning binding wall forming said opening, an outer surface of said protrusion having a round shape, wherein an outer peripheral cross-sectional shape of said protrusion taken along a central axis line of said nozzle body is construed as an arc-shaped curved toward the central axis near a top end thereof, and wherein the extreme end of said protrusion is flat.