Continuous flow fuel control system

Details Continuous flow fuel control system Continuous flow fuel control system

1991-03-05

1992-04-14

Casaregola, Louis J.

Power plants

Reaction motor

Condition responsive thrust varying means

244 312, F02C 928

Patent

active

051036363

ABSTRACT:
A fuel control system for providing steady state fuel flow to a gas-turbine engine comprises a pulse-width modulated, solenoid-operated fuel metering valve, an engine speed transducer, and a remote microprocessor communicating with the valve and the speed transducer through an optical fiber. The valve is operated by a direct current signal which is pulsed at a frequency substantially higher than the natural frequency of the valve spring/plunger system, whereby the plunger remains axially displaced from the valve seat to provide continuous flow through the valve. The amount of axial plunger displacement and, hence, the fuel flow are prescribed by the pulse width of the signal directed through the valve.

REFERENCES:
patent: 3882675 (1975-05-01), Gilmache et al.
patent: 4015426 (1977-04-01), Hobo et al.
patent: 4185796 (1980-01-01), Riley
patent: 4587805 (1986-05-01), Winch et al.
patent: 4770370 (1988-09-01), Pinson
patent: 4860968 (1989-08-01), Pinson

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