| 摘要 |
A method of engine starting in a gas turbine engine (10) comprises rotating the engine (10) to provide an air flow (36) into a combustor (20) of the engine (10) and injecting fuel into the combustor (20) at a varying rate until the engine is lighted-off. The varying rate of the fuel flow is a function of time and is represented by a curve (76) having at least one high frequency with respect to a light-off time, representing instant changes of the rate for intersecting a light-off zone while reducing a quantity of fuel injected into the combustor (20). After the light-off occurrence fuel is continuously injected into the combustor (20) to accelerate the engine (10) to a self-sustaining operation condition. This method of the present invention is adapted to find light-off points under various temperature and altitude conditions, thereby advantageously providing a rapid light-off, particularly under cold weather conditions.
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