Method for operating an internal combustion engine
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United States of America Patent
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Nov 13, 2007
Grant Date -
Sep 13, 2007
app pub date -
Oct 13, 2004
filing date -
Oct 29, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method retains exhaust gas in the combustion chamber of an internal combustion engine and compresses the exhaust gas during a charge change. A first fuel quantity is injected into the retained exhaust gas by direct fuel injection. A second fuel quantity is subsequently fed to the combustion chamber so that a homogeneous fuel/air mixture is obtained in the combustion chamber. An auto-ignition time of the fuel/air mixture which is formed from the first and second fuel quantities is set as a function of a quantity ratio of the first fuel quantity to the second fuel quantity.
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