ELECTROMAGNETIC FUEL INJECTION VALVE

摘要

PURPOSE: To obtain an electromagnetic fuel injection valve which can enlarge an injection angle of fuel equally to an orifice angle. CONSTITUTION: A fuel flow passage port 21 of a seat 20 blocked by a valve body 19 is formed on a portion to which fuel is injected. A plate 22 having a plurality of orifices 23 whose central axes C are mutually opened outward is arranged on a leading end side of the flow passage port 21. The flow passage port 21 has a taperedly narrowed portion 21a and a taperedly widened portion 21c which has an opening angleθ3 of its inner peripheral surface equal to an orifice angleθ2 between the central axes of the orifices 23. In each orifice 23, an outer portion 23a spaced from a center axis O for widening of the inner peripheral surface is has the surface flushed with the inner peripheral surface of the widened portion 21c. An inner side edge 23b of the orifice 23 near the center axis O on leading end side of the inner peripheral surface is arranged on an outer side of an extended line L along the center axis O from the smallest diameter portion between the taperedly narrowed portion 21a and the taperedly widened portion 21c.