| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel injection valve with a plurality of combinations of a fuel injection hole and a recess, in which carbon deposit is hardly adhered and design flexibility of a position and an inclination angle of the fuel injection hole is increased.SOLUTION: In the fuel injection valve, a recess 301o is formed by pressing on an external surface of a nozzle forming member 301, a fuel injection hole 301n is formed by liquid jet laser processing such as water jet laser processing at a bottom face 301ob of the recess 301o, and before the formation of the fuel injection hole 301n by the liquid jet laser processing, a valve seat constitution surface 301g is preferably formed by grinding. |
