Hydraulic fuel pump apparatus for a fuel delivery chassis, suitable for refueling aircraft, and related devices, systems and methods
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United States of America Patent
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Sep 3, 2019
Grant Date -
Feb 21, 2019
app pub date -
Oct 23, 2018
filing date -
Mar 11, 2013
priority date (Note) -
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Abstract
Embodiments include a modular fuel pump apparatus for an aircraft refueling chassis and related devices, systems and methods. In one exemplary embodiment, a pump module includes a hydraulic motor driven by a hydraulic pump connected to a chassis motor. A chassis engine is operated at a substantially constant RPM, which causes the hydraulic pump to output hydraulic fluid to the pump module at a substantially constant hydraulic pressure. The speed of the hydraulic motor can be varied by a proportional flow control valve disposed between the hydraulic pump and the hydraulic motor, thereby varying the speed of the fuel pump and the flow rate of the fuel. A controller is configured to operate the pressure control valve such that the flow of the fuel is maintained at a predetermined flow rate.
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