Internal-combustion engines – Spark ignition timing control
Reexamination Certificate
2007-03-06
2007-03-06
Wolfe, Jr., Willis R. (Department: 3747)
Internal-combustion engines
Spark ignition timing control
C123S406300
Reexamination Certificate
active
11246189
ABSTRACT:
There is provided a combustion control system for a direct-injection spark-ignition internal combustion engine, including a fuel injection valve that injects fuel directly into a cylinder of the engine to form an air-fuel mixture in a combustion chamber of the engine cylinder, a spark plug that ignites the air-fuel mixture, and a control unit that performs combustion retard control to set an ignition timing of the spark plug at a point after compression top dead center and set an injection period of the fuel injection valve at a time after compression top dead center and before the ignition timing in such a manner that a time interval from a start point of the injection period to the ignition timing increases with decrease in a temperature in the engine cylinder at a cold start of the engine.
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Maitani Takao
Nakajima Akira
Sakai Taro
Takeda Tomoyuki
Tomita Masayuki
Hoang Johnny H.
Nissan Motor Co,. Ltd.
Wolfe, Jr. Willis R.
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