Pulsed fuel injection system for reducing nox emissions

Details Pulsed fuel injection system for reducing nox emissions Pulsed fuel injection system for reducing nox emissions

F - Mech Eng,Light,Heat,Weapons

02

M

F02M 45/00 (2006.01) F02C 9/28 (2006.01)

Patent

CA 2110560

PULSED FUEL INJECTION SYSTEM FOR REDUCING NOx EMISSIONS ABSTRACT OF THE DISCLOSURE A system for reducing the formation of NOx pollutants during the combustion of liquid fuel in a gas turbine engine. The system comprises introducing an externally modulated, rapidly- pulsed, oscillated or sinusoidal fuel flow delivery rate (generically referred to as "modulated") to produce a controlled degree of combustor air input flow oscillation and bulk flow oscillation within the combustor which enhances the fuel-air mixing rate and homogeneity within the combustor, decreases the residence time of transition fuel/air mixtures prone to NOx formation, and substantially decreases the NOx concentration in the resulting combustion gas product without creating a net pressure gain throughout the combustion chamber.

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