摘要 |
PROBLEM TO BE SOLVED: To provide a fuel injection valve capable of maintaining desired injection characteristics by always smoothing sliding movements of a movable element, solving adhesion of sticky material inside an oil passing groove, or preventing operation failure when closing the valve. SOLUTION: The fuel injection valve comprises an injection valve body, an electromagnetic solenoid, and an opening/closing valve mechanism. The opening/closing valve mechanism filled with low-pressure fuel oil is provided with the movable element 5 driven by an energizing means and magnetic force of the electromagnetic solenoid. In the fuel injection valve with the movable element 5 having an attracting surface 5E separating from/contacting the electromagnetic solenoid, the movable element 5 is provided with a slant face where an energizing force to the rotational direction is generated by an action of the low-pressure fuel oil along with the displacement to the axial direction at an edge part of a notch 53 of a flat plate part 51, or provided with an obliquely-inclined slit at the peripheral edge part, or provided with a penetrating oil passing hole so as to be inclined, or provided with the oil passing groove having a curved surface formed to be radially bent on the attracting surface 5E. Thereby, the movable element 5 is rotated and the sliding movements are always smoothed to prevent the operation failure at the time of opening/closing the valve. COPYRIGHT: (C)2006,JPO&NCIPI
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