| 摘要 |
PURPOSE:To prevent the fall of an output turbine at a rapid increase of load by rising the moment of inertia by increasing a target number of revolution at low loading, and to simplify the device by detecting load applied on an engine by the number of revolution of a shaft of a gas generator. CONSTITUTION:Since the number of revolution of a gas generator Ngg is easily detected as it is almost in proportion to an engine output, a signal to show a negative load indirectly is obtained by converting the actual number of revolution Ngg of the shaft of gas generator detected from an engine 1 into a voltage signal by an FV converting circuit 2. The target number of revolution is changed according to the load by changing an output value of a function generator 3 which gives the target number of revolution of an output turbine shaft in accordance with said signal. Then, a deviation 4 between the signal that indicates the target number of revolution and the signal of actual number of revolution from the FV converting circuit 5 is taken, and fuel is controlled according to the deviation to reduce the deviation to maintain the target number of revolution. Furthermore, within a low pressure range, the target number of revolution of an output turbine is set relatively high.
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