Exhaust emission aftertreatment
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United States of America Patent
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Feb 22, 2005
Grant Date -
Jun 24, 2004
app pub date -
Dec 19, 2002
filing date -
Dec 19, 2002
priority date (Note) -
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Abstract
An engine control system in a vehicle including a variable displacement internal combustion engine, a controller for controlling the displacement of the variable displacement internal combustion engine, and where the controller operates the variable displacement internal combustion engine in a partially displaced operating mode upon startup to increase exhaust gas temperature.
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