PURPOSE: To reduce a harmful component in exhaust gas from a turbine when it is partly loaded, by changing a mounting angle of a variable stationary blade in a compressor so that a flow proportion of fuel to air may be controlled to a fixed range.
CONSTITUTION: A flow of fuel F fed to a combustor 4 is measured by a detector 7, and its signal 8 is fed to a control device 9. Here a mounting angle control signal 10 for a variable stationary blade 2 provided in an axial compressor 1 is calculated being fed to a variable stationary blade driving gear 3 so that fuel-air ratio F/A may be controlled to a fixed value. In this way, a turbine, even when it is partly loaded, enables a harmful component in exhaust gas to be reduced by controlling the fuel-air ratio within a fixed range.
HIROSE FUMIYUKI
INOSE HIROSHI
