Engine control system for controlling in-cylinder fuel injection engine
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United States of America Patent
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Feb 18, 2003
Grant Date -
May 9, 2002
app pub date -
Jan 7, 2002
filing date -
Jun 23, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In order to provide a system that lower NOx emission and an improved fuel consumption are obtained by making the igniting control possible in the wide operation range by performing the fuel injection and the ultra lean burning with the homogeneous air-fuel mixture, in the engine having the compression igniting mode, in the in-cylinder fuel injection engine having the compression igniting mode, means for performing the first fuel injection for the initial combustion speed control before igniting and the second fuel injection for the engine torque control after that, are provided. The second fuel injection ratio for the engine torque control is increased according to the engine torque. Furthermore, in order to improve the igniting, the igniting trigger means is provided in the in-cylinder fuel injection engine having a compression igniting mode and the igniting trigger is added by the igniting trigger means after the first fuel injection.
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