| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel injection valve enabling the easy manufacture of a pipe member by forming the pipe member between the axial both ends of a yoke of two members of a magnetic pipe and a non-magnetic pipe and having a high responsiveness to the opening and closing of the valve. SOLUTION: The pipe member 12 of this fuel injection valve 10 comprises the magnetic pipe 13 and the non-magnetic pipe 14 in this order from a jet hole plate 18 side. The non-magnetic pipe 14 extends to the end part of the fuel injection valve 10 on the opposite side of the jet hole plate 18 to form a fuel inlet 15. The thickness of the non-magnetic pipe 14 is set to 0.2 to 1.0 mm. The end part 14a of the non-magnetic pipe 14 on the pipe 13 side is positioned on a movable core 22 side more than the opposed part 30a of a fixed core 30 facing the movable core 22, and on the fixed core 30 side more than the end part 45 of the yoke 44 where the yoke 44 is connected to the magnetic pipe 13. The non-magnetic pipe 14 covers the outer periphery of a gap 110 formed between the movable core 22 and the fixed core 30. COPYRIGHT: (C)2006,JPO&NCIPI
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