| 摘要 |
PURPOSE: A fuel injection nozzle is provided to promote atomization of injected fuel efficiently by promoting the cracking of a liquid pillar part in fuel flow generating in an injection hole. CONSTITUTION: An injection hole plate(25) having a thin disk shape is mounted at the end of a low fuel flow part of a valve body(13). The injection hole plate includes four injection holes(25a,25b,25c,25d) having fuel inlets on the same circumference from a central shaft(27) of the injection hole plate. The injection holes are formed away from the central shaft of the injection hole plate toward a fuel injection direction. In each injection hole, the inner circumference of the injection holes away from the central shaft is inclined toward the outer circumference to the axial line connecting the center of the fuel inlets and the fuel outlets of each injection hole. Fuel injected into the holes is spread by contact with the inner circumference of the injection holes. The fuel is injected from the injection holes in liquid film manner. Therefore, the fuel is atomized efficiently. |
