| 摘要 |
In a fuel control system for turbine engines, it is beneficial to provide a minimum fuel signal which prevents the fuel demand of the turbine engine from being decreased below a lower limit which can cause flameout or extinction. The fuel control system of the present invention provides an electronic circuit that includes a portion which dynamically determines the minimum fuel demand of the turbine engine during operation. A circuit is provided to compare the power output of the turbine engine to a predetermined threshold magnitude. The no-load or low-load minimum fuel demand level is continually monitored until the power output of the turbine engine exceeds the predetermined threshold magnitude at which time the stored value of fuel demand is inhibited from being subsequently changed. During later operation of the turbine engine, the stored value of minimum fuel demand is provided to a most fuel bus to operate as a minimum limit of fuel demand for the turbine engine. A temperature compensation device adjusts the minimum fuel demand in response to temperature changes that can occur after the minimum fuel demand is stored.
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