| 摘要 |
PURPOSE: To provide a fuel injection valve having an easy fuel atomization by lessening a nozzle diameter and an easy processing and a low price. CONSTITUTION: A formula∮D1+∮d., and t.∮d are established, where diameter of a plate material is∮d, arranged pitch is p, diameter of cylindrical fuel passage is∮D1, 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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