| 摘要 |
Provided is a nozzle plate for a fuel injection device which can inject fuel flowed out from a fuel injection port of a fuel injection device in a sufficiently atomized manner. According to the nozzle plate 3 of the present invention, a portion of fuel flowed out from an fuel injection port of the fuel injection device is atomized by impinging on an interference body 16 and, at the same time, the flow of the portion of fuel is sharply bent and impinges on fuel which straightly advances and passes through a nozzle hole 7 and an orifice 8 thus turning the flow of fuel which straightly advances and passes through the nozzle hole 7 and the orifice 8 into a turbulent flow. Further, according to the nozzle plate 3 of the present invention, both end portions of the orifice 8 form non-rounded sharpened corner portions 22 and hence, a liquid film of fuel injected from the corner portions 22 and areas in the vicinity of the corner portions of the orifice is formed into a thin sharpened and pointed state whereby an end portion of the liquid film of fuel injected from the orifice 8 is easily atomized due to a friction between the end portion of the liquid film of fuel and air. Accordingly, the nozzle plate 3 of the present invention can further improve the level of atomization of fuel compared to conventional nozzle plates. |
