| 摘要 |
An apparatus for controlling the operation of a gas turbine engine 4 to enable the engine to utilise low calorific value gas, such as low quality landfill methane gas. The apparatus comprising a gas compressor 2 for compressing gas to be combusted in the combustion chamber of the engine, means for supplying a low calorific value gas, preferably via a valve 5, to an input of said compressor 4, preferably a turbine, and means for mixing a non-combustible gas, such as air, via supply line 6 and valve 8, with said low calorific-value gas. The power output of the engine is controlled by mixing more or less air with the gas while maintaining a substantially constant flow rate of gas through the compressor, to avoid potentially damage fluctuations in the speed of the compressor. Preferably the non-combustible gas is supplied from a pressurized source such as a pump, fan, pressurized reservoir etc.
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