Algorithm incorporating driving conditions into LNT regeneration scheduling
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United States of America Patent
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Jul 19, 2011
Grant Date -
Dec 25, 2008
app pub date -
Jun 19, 2007
filing date -
Jun 19, 2007
priority date (Note) -
Expired
status (Latency Note)
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Abstract
trap, reaching a critical value. The critical value is varied according to the demands currently being place on the exhaust aftertreatment system. In one embodiment, the critical value is set based on engine speed-load information. The method regenerates more frequently when exhaust aftertreatment demands are high and less frequently when demands are low. The method improves aftertreatment performance while reducing aftertreatment fuel penalty.
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