| 摘要 |
An electromagnetic fuel injection valve (I) is provided that includes a fixed core ( 5 ) made of a high hardness ferrite magnetic material, and a movable core ( 12 ) that has fixed thereto by press-fitting a stopper element ( 14 ) that is nonmagnetic or is more weakly magnetic than the movable core ( 12 ), the stopper element ( 14 ) abutting directly against the fixed core ( 5 ) so as to maintain an air gap (g) between the two cores ( 5 ) and ( 12 ) when a coil ( 30 ) is energized. In this way, high abrasion resistance and responsiveness can be imparted to the fixed core and the movable core without subjecting the two cores to a troublesome abrasion resistance treatment to provide a plating layer, etc., and without providing a valve body stopper plate, thereby contributing to a reduction in the cost of the electromagnetic fuel injection valve.
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