| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel injection valve accurately controlling fuel injection quantity while inhibiting increase of the number of components and increase of assembly man-hour. SOLUTION: A seat part 50 supporting a spring 45 is installed on an end part in an injection hole 23 side of a cylinder member 11. A separate member for retaining attitude of the spring 45, therefore, is not required and number of components can be reduced. The seat part 50 is formed as one body with the cylinder body 11 and is formed by bending a part of the cylinder member 11. Consequently, a structure can be simplified and working man-hour can be reduced. Also, a movable core 40 and a needle 24 can relatively move in an axial direction, and pressing forces of a spring 37 and a spring 45 are different. Consequently, bound of a needle 24 associated with collision of a movable core 40 and the fixed core 33 and bound of the needle 24 associated with collision of the needle 24 and a nozzle body can be reduced. COPYRIGHT: (C)2008,JPO&INPIT
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