| 摘要 |
PROBLEM TO BE SOLVED: To improve penetration controllability and to enhance atomization.SOLUTION: A fuel injection valve is provided with a valve housing 10 having fuel injection holes 17 gradually inclined toward an outer peripheral side from a fuel inlet 170 side to a fuel outlet 171 side, and a valve member 40 opening and closing the fuel injection holes 17 by reciprocating motion in the valve housing 10 to intermittently inject fuel. When a concentric inner virtual circle 134b is defined at an inner peripheral side of an outer virtual circle 134a, a plurality of outer injection holes 17a of which innermost peripheral edge portions 174a positioned at an innermost peripheral side in the valve housing 10 at the fuel outlet 171 side, are disposed on the inner virtual circle 134b, and which penetrate through the outer virtual circle 134a at an outer peripheral side with respect to the innermost peripheral edge portions 174a, and a plurality of inner injection holes 17b of which outermost peripheral edge portions 174b positioned at an outermost peripheral side in the valve housing 10 at the fuel outlet 171 side, are disposed on the outer virtual circle 134a, and which penetrate through the inner virtual circle 134b at an inner peripheral side with respect to the outermost peripheral edge portions 174b, are alternately arranged in the circumferential direction of the valve housing 10. |
