Invention Grant
US09222418B2 Fuel feed circuit with hydraulic actuator and fuel metering unit for an aeroengine 有权
具有用于航空发动机的液压致动器和燃料计量单元的燃料供给回路

Fuel feed circuit with hydraulic actuator and fuel metering unit for an aeroengine
Abstract:
A fuel feed circuit for an aeroengine, the circuit including a high-pressure pumping system including first and second positive displacement pumps, a hydraulic actuator, and a fuel metering unit. As a function of a position of a slide of the actuator, a feed orifice of the actuator may be connected to a high-pressure delivery orifice connected to an outlet of the second pump, or to a low-pressure delivery orifice connected to a low-pressure feed line. The fuel metering unit includes through sections, one of these through sections being connected to an outlet of the high-pressure pumping system and the other through section being connected to an outlet of the high-pressure pumping system and leading to a high-pressure pilot chamber of the hydraulic actuator.
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