Filter assembly for fuel supply to actuators and fuel control system of aircraft engine and method
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United States of America Patent
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Feb 11, 2014
Grant Date -
Feb 17, 2011
app pub date -
Nov 6, 2007
filing date -
Nov 6, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
A filter assembly for a fuel delivery system for actuators and fuel control system of an aircraft engine includes a wash flow filter. Fuel flow velocity is increased through the filter through use of a recirculating passage that is effectively achieved through use of an ejector pump. A portion of the pressurized fuel delivered by the main fuel pump is diverted and serves as a motive fluid that scavenges unfiltered flow from downstream of the filter and recirculates or discharges the recirculated flow to an inlet of the filter. This provides increased velocity to maintain sufficient washing of the filter openings.
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