Adsorbed substance accumulation reduction for exhaust treatment equipment
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United States of America Patent
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Sep 7, 2010
Grant Date -
Jan 24, 2008
app pub date -
Jul 21, 2006
filing date -
Jul 21, 2006
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Abstract
A system, method and computer operable code is disclosed for reducing HC and liquid accumulation in an exhaust gas treatment system. A timer is used to monitor the amount of time the system spends in either absorption mode or desorption mode. If the exhaust gas temperature at the inlet of a oxidation catalyst device is below an absorption threshold, the timer is instructed to count up. If the exhaust gas temperature is above a desorption threshold, the timer is instructed to count down. At a predetermined timer threshold value, the engine is instructed to enter a thermal management mode operable to reduce accumulation of HC and liquid in the exhaust gas management system.
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