Fuel pumping unit
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United States of America Patent
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Nov 27, 2018
Grant Date -
May 26, 2016
app pub date -
Sep 18, 2015
filing date -
Nov 20, 2014
priority date (Note) -
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Abstract
A fuel pumping unit has a low pressure centrifugal pump and a high pressure centrifugal pump. In use, the low pressure pump supplies fuel at a boosted pressure to the high pressure pump for onward supply to a fuel metering unit. The pumping unit further has a drive input which drives the low and high pressure pumps. A gear arrangement is operatively located between the drive input and the low and high pressure pumps such that the low and high pressure pumps are driven at different speeds by the drive input.
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