Two-displacement setting variable displacement pump used as engine over-thrust protection with fuel system thermal benefit
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United States of America Patent
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Nov 3, 2009
Grant Date -
Sep 25, 2008
app pub date -
Mar 29, 2005
filing date -
Mar 29, 2004
priority date (Note) -
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Abstract
A fuel delivery system (10) comprises a variable displacement pump (20) for pressurizing fuel. The variable displacement pump has a distinct first pump displacement setting for a first desired mass flow of fuel and a distinct second pump displacement setting for a second desired mass flow of fuel. The variable displacement pump operates in only one of the first and second pump displacement settings. A fuel control (22) with a metering valve downstream of the variable displacement pump selectively regulates fuel delivery.
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