To provide a control device for a cylinder injection type spark ignition internal combustion engine capable of controlling idling speed with corresponding to load fluctuation or the like almost without dropping warming up action of exhaust gas on an exhaust emission control catalyst by minimizing drop of exhaust gas temperature under idling condition during catalyst warming up.
When it is judged that the exhaust emission control catalyst is not warmed up during idling of an internal combustion engine, ignition timing is retarded than base advancing value and exhaust gas temperature is raised to warm up the catalyst. When load fluctuates and rotation speed fluctuates during warming up of the catalyst, target suction air quantity is calculated from difference between target idling speed and actual idling speed and intake air quantity is changed by an intake air quantity adjusting means. Output of the internal combustion engine is adjusted by changing ignition timing together. When load fluctuation is large, ignition timing is also changed together.
OKAMOTO TAKASHI
HORI TOSHIO
| JP2002180943A | 2002-06-26 | |||
| JPH09126010A | 1997-05-13 | |||
| JPS60122251A | 1985-06-29 | |||
| JP2001336467A | 2001-12-07 | |||
| JPS6368745A | 1988-03-28 |
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