| 摘要 |
PURPOSE:To decrease Nox, CO contents in an exhaust gas also to a wide range variation of a load by making angles between axes of main hole and auxiliary hole provided to a fuel blow out pipe and an axis of the fuel blow out pipe changeable independently, respectively. CONSTITUTION:A spud nozzle comprises an inner pipe 21 and an outer pipe 22. A main hole 23 is provided to an end of the inner pipe 21 and an auxiliary hole 24 is also provided to that of the outer pipe 22. A fuel blow out direction is selected corresponding to a variation of an air ratio and a load, with the fuel flow out directions from the main hole 23 and auxiliary hole 24 may be changed independently each other by adjusting a rotation direction of the inner pipe 21 and the outer pipe 22. Thereby, the fuel can be burned always in an optimum combustion condition.
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