FILTER ASSEMBLY FOR FUEL SUPPLY TO ACTUATORS AND FUEL CONTROL SYSTEM OF AIRCRAFT ENGINE AND METHOD

Title:

FILTER ASSEMBLY FOR FUEL SUPPLY TO ACTUATORS AND FUEL CONTROL SYSTEM OF AIRCRAFT ENGINE AND METHOD

Document Type and Number:

WIPO Patent Application WO2008063869

Kind Code:

A9

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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Inventors:

CLEMENTS MARTIN A (US)
NYZEN ROBERT (US)
OGGER JOHN P (US)
FLYNN WILLIAM T (US)

Application Number:

PCT/US2007/083748

Publication Date:

July 31, 2008

Filing Date:

November 06, 2007

Export Citation:

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Assignee:

ARGO TECH CORP (US)
CLEMENTS MARTIN A (US)
NYZEN ROBERT (US)
OGGER JOHN P (US)
FLYNN WILLIAM T (US)

International Classes:

B01D29/25; B01D29/90; B01D37/00; F02M37/38

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