F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
60/181, 137/43
F16K 17/04 (2006.01) F02C 9/26 (2006.01) F02C 9/28 (2006.01) F02D 35/00 (2006.01) G01F 1/26 (2006.01) G01F 1/36 (2006.01) G05D 7/06 (2006.01)
Patent
CA 2022169
A fuel control is provided having a metering means for metering a weight flow of fuel, a control for controlling the metering means, a valve for determining a change in fluid pressure of the weight flow of fuel downstream of the metering means, the valve having; a pressure reaction surface disposed in the weight flow downstream of the metering means, the surface controlling an area of a window passing the weight flow of fuel therethrough, a spring attaching to the pressure reaction surface for balancing the change in fluid pressure of the weight flow of fuel against the pressure reaction surface, and a position sensor for continuously determining a position of the pressure reaction surface and continuously sending a signal of the position to the control means, wherein the control means determines the weight flow of fuel through the valve means according to the equation: WF = Image whereby K is a constant, F(X) is equal to an area of the window as a function of X, X is equal to a position of the reaction surface which controls the area of the window, Fo is a preload force of the spring, Ks is equal to a spring rate of the spring, and Av equals the area of the reaction surface.
Donnelly Brian G.
Dyer Gerald P.
Swabey Ogilvy Renault
United Technologies Corporation
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