| 摘要 |
<p>Method and apparatus for metering fuel flow to a gas turbine engine includes a first bifurcated movable metering element straddling a pair of opposed metering openings and shiftable to adjust the area of the openings to vary fuel flow from a pump to the combustion chamber of the engine. A second bifurcated movable metering element straddles a second pair of opposed metering openings to adjust fuel flow back to the inlet of the pump in bypassing relationship to the combustor. The movement of the second metering element is responsive to the pressure differential across the first metering openings to maintain this pressure differential substantially constant to allow precise fuel metering by movement of the first metering element.</p> |
