| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a control device of an internal combustion engine capable of restraining an excessive rise in the temperature of an engine body when setting the air-fuel ratio of exhaust gas supplied to an NOx storage catalyst to the rich or stoichiometric air-fuel ratio. Ž<P>SOLUTION: This control device of the internal combustion engine reduces a combustion quantity of fuel in a combustion chamber, and increases unburnt fuel supplied to the NOx storage catalyst, by changing an injection pattern D to an injection pattern E of delaying the injection timing of after-injection, when the temperature of the engine body of the internal combustion engine becomes a predetermined allowable value or more, when performing rich control by the injection pattern D having the after-injection for setting the air-fuel ratio of the exhaust gas to the rich or stoichiometric air-fuel ratio by increasing the injection quantity of the fuel injected into the combustion chamber. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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