Reintroduction of Air in Delivery System Accumulator
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United States of America Patent
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Issued Date -
Feb 4, 2016
app pub date -
Feb 17, 2014
filing date -
Mar 15, 2013
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Abstract
According to one embodiment, an apparatus for reintroducing air includes a bypass valve that reduces pressure in an accumulator that stores reductant to less than an air supply pressure of an air supply. The apparatus also includes a metering valve that fills the accumulator with air from the air supply at the air supply pressure, and a pump that pumps reductant into the accumulator.
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