초록 ▼

A recuperated gas turbine engine fuel control valve and method which controls fuel flow during engine acceleration as a preselected empirical function of combustor gauge pressure and combustor inlet temperature, and which can also control fuel flow during deceleration without interruption of the com

A recuperated gas turbine engine fuel control valve and method which controls fuel flow during engine acceleration as a preselected empirical function of combustor gauge pressure and combustor inlet temperature, and which can also control fuel flow during deceleration without interruption of the combustion process.

대표청구항 ▼

A method for controlling fuel flow to the combustor of a gas generator section of a gas turbine engine receiving a supply of heated, pressurized air from a compressor, comprising the steps of: sensing the temperature of inlet air being supplied to the combustor; sensing the pressure maintained withi

A method for controlling fuel flow to the combustor of a gas generator section of a gas turbine engine receiving a supply of heated, pressurized air from a compressor, comprising the steps of: sensing the temperature of inlet air being supplied to the combustor; sensing the pressure maintained within said combustor; delivering pressurized fuel flow through a pair of ducts in parallel flow arrangement to a fuel scheduling valve having a single output passage directing the pressurized fuel flow to the combustor; metering fuel flow through one of said pair of ducts upstream of said scheduling valve in relation to an input signal whereby relatively unrestricted maximum flow is permitted through said one duct to said scheduling valve during acceleration operation, and severely restricted minimum flow is permitted through said one duct to said scheduling valve during deceleration operation of said engine; maintaining the temperature of gas exhausting from said combustor at a substantially constant level during at least one portion of the acceleration operation by metering fuel flow through said single output passage of said scheduling valve along a first preselected, empirical schedule as a predetermined function of said sensed temperature and said sensed pressure; and maintaining a continuous combustion process within said combustor during said deceleration operation by metering fuel flow delivered through the said other of said pair of outlet ducts in said scheduling valve along a second preselected, empirical schedule as a second predetermined function of said sensed pressure.