Patent ID: 6845925

Claim:
A fuel injector comprising: a valve body provided with a fuel injection hole and for opening and closing a fuel passageway between said injection hole and a valve seat provided at the upstream end of the injection hole, means for driving said valve body, means provided at an upstream end of the injection hole for generating a swirl flow to fuel passing through said injection hole; and restraint means for restraining the flow of a fuel, provided downstream with respect to the injection hole and outside said injection hole, wherein said restraint means restrains radial spreading of the swirled fuel passing through the injection hole in at least two places and splits the swirled fuel into portions high in spraying density of the injected swirled fuel and portions low in spraying density of the injected swirled fuel, in that the split portions of the fuel that are high in spraying density differ from each other in terms of quantity.