| 摘要 |
PROBLEM TO BE SOLVED: To increase a dynamic range without needing application of matching polishing on front and rear valve guide parts. SOLUTION: A valve 12 is slidably incorporated in an injection valve body. Front and rear valve guide parts 23 and 25 consisting of guide surfaces 13A and 2A and slide surfaces 12A and 10A are arranged between the injection valve body and the valve 12. A stopper part 27 consisting of a valve contact surface 15B and a stopper contact surface 12B is provided. By setting a front clearance C1 between the guide surface 13A and the slide surface 12A of a front valve guide part 23 and a rear clearance C2 between the 2A and the slide surface 10A of a rear valve guide part 25 to a relation of C1 <C2 , a prescribed inclination angle is provided for the valve 12. The stopper contact surface 12B of a stopper 27 is formed in a slope with an inclination angleθ2 approximately corresponding to the inclination angle of the valve 12.
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