Fuel injection valve

摘要

A fuel injection valve capable of eliminating pressure loss at the upstream portion of swing grooves while speeding heat radiation from a swing body is provided. Most of an outer circumferential part of the swing body 13 for applying swing to fuel is in a full circumference engagement with an inner circumferential surface of a valve body 9 and further, the upstream portion of the swing grooves 20 is constructed by a doughnut-shaped common passage 13d.