| 摘要 |
<P>PROBLEM TO BE SOLVED: To minimize clearance in a recess and a protrusion without making excessive an acting resistance when a needle moves in a fuel injection valve where the recess is provided in one part of an end portion of facing needle or a bottom part of a valve body, and the protrusion that is fitted into the recess in the other part, thereby a damper effect is generated when closing the valve. <P>SOLUTION: In the fuel injection valve where a fuel storage part 24 is formed by the recess 22 provided in the end part of the needle 6 and the protrusion 20 provided in an injection plate 8 that is a bottom part of a valve body 2, a fuel spiracle 26 is provided in the needle 6, and a fuel chamber 16 that is an interstitial space between the distal end part of the needle 6 and the injection plate 8 and the fuel storage part 24 are communicated by the fuel spiracle hole 26. <P>COPYRIGHT: (C)2012,JPO&INPIT |
