| 摘要 |
PURPOSE:To prevent the combustion vibration, by providing an injection hole and an auxiliary injection hole in a fuel nozzle, and supplying a fuel to the injection hole when a ratio of an air pressure to a fuel pressure reaches a permissible pressure ratio. CONSTITUTION:A sequence valve 26 is provided in a fuel supply pipe 11 connecting a fuel control valve 12 to an outer sleeve 20 of a fuel nozzle 10. A branched supply pipe 28 bypassing the sequence valve 26 is connected to an inner sleeve 21 of the fuel nozzle 10. The inner sleeve 21 and the outer sleeve 20 are communicated with an auxiliary injection hole 25 and an injection hole 13, respectively. When a ratio of an air pressure to a fuel pressure reaches a permissible pressure ratio, the sequence valve 26 is opened to supply the fuel to the injection hole 13. Thus, the generation of combustion vibration can be prevented.
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