Method for controlling a spark-ignition direct-injection internal combustion engine at low loads
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United States of America Patent
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May 29, 2012
Grant Date -
Aug 20, 2009
app pub date -
Feb 11, 2009
filing date -
Feb 15, 2008
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Abstract
A spark-ignition direct-injection internal combustion engine is controlled at low loads through split fuel injections and spark discharges including one injection and spark during a negative valve overlap period and another injection and spark during a compression phase of the engine cycle.
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