An apparatus and a method of controlling the supply of fuel to a combustion chamber

摘要

A combustion chamber (15) comprises a primary stage fuel burner and a secondary stage fuel burner. A sensor (60) is positioned downstream of the combustion chamber (15) to measure the concentration of one or more compounds. The sensor (60) sends the measurements to a processor (58). The processor (58) compares the measured concentration of the compound with a first and second threshold values. The processor (58) supplies more fuel (Mp) to the primary stage fuel burner if the measured concentration is higher than the first threshold value, supplies more fuel (Ms) to the secondary stage fuel burner if the measured concentration is higher than the second threshold value and maintains the supply of fuel (Mp) to the primary stage and fuel (Ms) to the secondary stage if the measured concentration is lower than the first and second threshold values.