METHOD FOR OPERATING AN ENGINE
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United States of America Patent
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app pub date -
Dec 16, 2015
filing date -
Dec 16, 2015
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Abstract
A method for operating an engine includes selectively introducing air in an exhaust conduit upstream of a selective catalytic reduction system based on an exhaust gas temperature and a nitrous oxide conversion efficiency of the selective catalytic reduction system and changing at least one engine operating map for engine operation when the nitrous oxide conversion efficiency after introducing air is above a threshold nitrous oxide conversion efficiency.
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