Method and apparatus for controlling operation of an internal combustion engine operating in HCCI combustion mode
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United States of America Patent
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May 30, 2017
Grant Date -
Dec 17, 2015
app pub date -
Jun 10, 2015
filing date -
Jun 13, 2014
priority date (Note) -
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Abstract
An internal combustion engine is configured to operate in a homogeneous-charge compression-ignition combustion mode and a spark-ignition combustion mode employing late intake valve closing. A method for operating the internal combustion engine includes determining an amount of residual gas re-inducted into a combustion chamber from a previous engine cycle and determining an amount of fresh air trapped in the combustion chamber for the present engine cycle based upon the amount of residual gas re-inducted into the combustion chamber from the previous engine cycle. Engine fueling to the cylinder for the present engine cycle is controlled based upon the amount of fresh air trapped in the combustion chamber for the present engine cycle.
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