Gas turbine engine fuel control system, and metering valve

Details Gas turbine engine fuel control system, and metering valve Gas turbine engine fuel control system, and metering valve

1990-03-09

1992-02-11

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

Combined with regulation of power output feature

F02C 928

Patent

active

050866176

ABSTRACT:
A fuel control system for a gas turbine engine has a metering valve and a shut-off valve in series, and a spill valve for spilling fuel from upstream of the metering valve in response to an overspeed condition of the engine. The spill valve and shut-off valve are responsive to respective servo pressures, and an electrically operated valve can control both servo pressures in response to a demand to shut down the engine. The electrically operated valve can also control a third servo pressure for setting a minimum flow limiting stop in the metering valve to a lower limiting level during engine starting.

REFERENCES:
patent: 4473999 (1984-10-01), Smith
patent: 4578945 (1986-04-01), Peck et al.
patent: 4608820 (1986-09-01), White et al.
patent: 4760696 (1988-08-01), Rooks et al.
patent: 4817376 (1989-04-01), Brocard et al.

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