| abstract |
The present invention suppresses an increase in exhaust emission when the temperature of the NO X catalyst is low in an internal combustion engine control system including an NO X catalyst having a NO X reduction function and an exhaust purification device including a particulate filter. However, it is to provide a technology that suppresses the decrease in acceleration performance. The present invention is disposed in an exhaust passage of an internal combustion engine, limiting an exhaust purification device that includes a NO X catalyst and the particulate filter has a NO X reduction function, the amount of intake air depending on the temperature of the NO X catalyst comprising an intake amount restriction means for a fuel limiting means for limiting the fuel injection amount according to the intake air amount of the internal combustion engine, and the PM collecting quantity acquisition means for acquiring the amount of PM trapped in the particulate filter, the a control system for an internal combustion engine, when the amount of PM trapped in the particulate filter and the internal combustion engine is equal to or less than a predetermined amount is in the accelerating operation state, depending on the temperature of the intake air amount and the NO X catalyst inner combustion engine fuel The limit value of the injection amount was corrected. [Selection] Figure 5 |