Patent ID: 6722136
Filing Date: 2004-04-20
Classification: F02C,F05D,Y02T

Abstract:
A method for reducing NOx emissions, increasing the thrust, and improving engine thermal efficiency from a turbojet engine, the turbojet engine having a high pressure compressor axially spaced between a low pressure compressor and a turbine, the method comprising the steps of:providing a first series of water injection nozzles prior to the low pressure compressor; providing a second series of water injection nozzles between the low pressure compressor and the high pressure compressor; operating the turbojet engine to produce thrust; selectively operating the first series of water injection nozzles to input a first mist stream into the low pressure compressor; and operating the second series of water injection nozzles to input a second mist stream into the high pressure compressor; wherein each of the first and second mist streams is comprised of atomized water; wherein selective operation of the first series of water injection nozzles is at least partially based on the atmospheric condition in which the turbojet engine is operating.