| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel injection valve having an easy fuel atomization by lessening a nozzle diameter and an easy processing and a low price. SOLUTION: A formulaϕD1+ϕd., and t.ϕd are established, where diameter of a plate material isϕd, arranged pitch is p, diameter of cylindrical fuel passage isϕD1, depth of axial direction of above mentioned fuel cavity is t. The relation of between total sectional area S1 of injector opening and a cylindrical area S2 of a cylindrical part at the same height as the depth in axial direction of fuel passage diameter is established in a formula 1<S2/S1<3. Also fuel cavity can be formed in a valve seat.
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