Patent ID: 6810655
Filing Date: 2004-11-02
Classification: F02C,F23N,F23R

Abstract:
A gas turbine having a plurality of chambers, each one of said chambers comprising:at least one combustion reaction zone receiving air from a compressor and fuel from a fuel distributor; said fuel distributor having a fuel trim orifice and a fuel trim valve, said fuel trim valve for said each one of said chambers being individually adjustable to trim the flow of fuel to the chamber; a pressure sensor detecting a dynamic gas pressure in the chamber; a variation sensor for detecting the variation in fuel/air ratio from said plurality of chambers; and a computer controller coupled to said fuel trim valve and said sensors, and programmed for operatively adjusting the fuel trim valve to optimize the dynamic gas pressure detected by the pressure sensor and the variation in fuel/air ratio detected by the variation sensor, and for further adjusting the fuel trim valve for each one of said chambers to maintain said variation in fuel/air ratio at a predetermined level.