Patent ID: 6164055
Filing Date: 2000-12-26
Classification: F05B,F23D,F23R

Abstract:
A method for dynamically stabilizing combustion in a combustion comprising the steps of:mixing fuel and air in at least two premixers to form a fuel air mixture;injecting fuel through a fuel injector having a plurality of fuel injection orifices axially spaced apart from each other within a first premixer at a first axial position;injecting fuel through a second fuel injector having a plurality of fuel injection orifices axially spaced apart from each other within a second premixer at a varied axial position with respect to said first premixer;discharging said mixtures into said combustion chamber;combusting said mixtures in said combustion chamber to form a flame excitable at a pressure oscillation propagating upstream into said premixers to cause said mixtures to oscillate as fuel concentration waves so that said corresponding fuel concentration waves are out of phase with each other for uncoupling fuel from combustion to reduce the magnitude of said flame pressure oscillation and dynamic pressure instability in said combustion chamber.