| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel injection nozzle capable of reducing discharge of black smoke from an engine by ensuring the proper number of spray without impairing atomizing of fuel, and controlling the spray form corresponding to the shape or performance of an applicable engine. SOLUTION: The shortest distance L between an outer periphery of a first injection hole 601 and an outer periphery of a second injection hole 602, and an angle formed by a center axis of the first injection hole 601 and a center axis of the second injection hole 602, are regulated, and thereby, particle of fuel is injected from the injection hole as a single spray, and atomizing of fuel for forming spray is promoted. Since single spray is formed by one injection hole group 60, spray times not excess. Since collision of spray particles is avoided, atomizing of fuel is promoted. It is thus possible to improve combustion efficiency of fuel in a combustion chamber, and it is also possible to reduce generation of black smoke to be discharged.
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