Reductant injection control strategy
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United States of America Patent
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Feb 15, 2011
Grant Date -
Oct 16, 2008
app pub date -
Mar 7, 2008
filing date -
Apr 10, 2007
priority date (Note) -
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Abstract
A base dose module generates a base dose signal that corresponds to a mass flow rate of a dosing agent. A dose adjustment module receives an ammonia (NH3) signal and determines a first dose adjustment based upon the NH3 signal. The NH3 signal indicates NH3 measured downstream of a catalyst. The dose determination module generates a dosing signal based upon the base dose signal and the first dose adjustment.
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