Control strategy for a homogeneous-charge compression-ignition engine
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United States of America Patent
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Jan 8, 2013
Grant Date -
Feb 18, 2010
app pub date -
Sep 1, 2009
filing date -
Feb 15, 2008
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Abstract
A method for operating a multi-cylinder spark-ignition direct-injection internal combustion engine responsive to a low load demand includes monitoring an engine state associated with combustion for each cylinder during each combustion cycle during low load operation, determining a combustion stability index for each cylinder based upon the monitored engine state associated with combustion for the respective cylinder, and individually adjusting an initiation of a spark discharge relative to an end of a fuel injection event for each cylinder based upon the combustion stability index determined for the respective cylinder.
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