| 摘要 |
PROBLEM TO BE SOLVED: To prevent unstable operation of an armature plate of an solenoid valve due to dirt in drain fuel. SOLUTION: This fuel injection valve 1 comprises the fuel injection control solenoid valve 5 having an electromagnet solenoid 68 and an armature stopper 67 incorporated in a fixed sleeve 61 for controlling the lifting operation of the armature plate 51, whereby the escape of high pressure fuel in a control chamber 45 to a fuel low pressure part is controlled. It has a gap G3 between a fixed core 63 and the armature stopper 67 and a through-hole 67B formed in the armature stopper 67. The drain fuel flowing in the solenoid valve 5 when energized is escaped via the gap G3 and the through-hole 67B to the fuel low pressure part and dirt in the drain fuel is held between the armature plate 51 and the armature stopper 67, thus preventing a change in the lifting amount of the armature plate 51. COPYRIGHT: (C)2005,JPO&NCIPI
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