Centrifugal pump fuel system and method for gas turbine engine

Details Centrifugal pump fuel system and method for gas turbine engine Centrifugal pump fuel system and method for gas turbine engine

2006-01-03

2006-01-03

Casaregola, Louis J. (Department: 3746)

Power plants

Combustion products used as motive fluid

Combined with regulation of power output feature

C060S734000

Reexamination Certificate

active

06981359

ABSTRACT:
A fuel system for a gas turbine engine that utilizes a centrifugal pump. The system includes a fuel metering valve that is adapted to set a metered flow of fuel, and a throttle valve that is adapted to accurately control pressure drop across the fuel metering valve. The throttle valve has at least two variable orifices and a compensation chamber between the variable orifices. The throttle valve includes a differential valve piston slidable in a valve body. The differential valve piston comprises working surfaces of at least two different diameters such that changes in chamber pressures effect different axial forces upon the piston.

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