Control unit for direct injection engine
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United States of America Patent
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Mar 5, 2013
Grant Date -
Sep 22, 2011
app pub date -
Feb 16, 2011
filing date -
Mar 17, 2010
priority date (Note) -
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Abstract
When a direct injection type internal combustion engine is in an operating state, a fuel is split and jetted into a cylinder of the internal combustion engine and split injections are performed in a manner to make a ratio of a piston travel and an injection pulse width of split injection constant in a cycle whereby a rich mixture is not locally generated and a mixture in a cylinder of the internal combustion engine is put in a condition near stoichiometry. Also, when the internal combustion engine is in cold condition, a fuel is split and jetted and split injections are performed so that the ratio of the piston travel and the injection pulse width of split injections monotonously increases in a cycle.
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