FUEL INJECTION VALVE

摘要

A fuel injection valve (1) where the relief of a high-pressure fuel in a control chamber (45) to a fuel low-pressure section is controlled by a solenoid valve (5) for fuel injection control. The solenoid valve (5) is constructed such that lift operation of an armature plate (51) is controlled by an electromagnetic solenoid (68) assembled in a stationary sleeve (61) and armature stopper (67). A gap (G3) is provided between a stationary core (63) and the armature stopper (67) and through-holes (67B) are formed in the armature stopper (67), so that a drain fuel flows to the fuel low-pressure section through the gap (G3) and the through-holes (67B) when electricity is conducted through the solenoid valve (5). This results that the amount of lift of the armature plate (51) is prevented from being varied by a foreign object etc., contained in the drain fuel, caught between the armature plate (51) and the armature stopper (67).