| 摘要 |
An object of the present invention is to provide an internal combustion engine control device that, when an abnormal combustion is detected, is capable of not only exercising control to suppress the occurrence of the abnormal combustion, but also exercising catalyst temperature control. The control device acquires the temperature of a catalyst disposed in an exhaust path of an internal combustion engine, and detects an abnormal combustion that has occurred in a combustion chamber of the internal combustion engine. The control device includes gas control means, which controls the amount of intake gas flowing into the combustion chamber and the temperature of exhaust gas flowing into the catalyst, and fuel injection amount control means, which controls the amount of fuel injected into the combustion chamber. The control device also includes abnormal combustion inhibition mode selection means that chooses a first mode, a second mode, or a third mode in accordance with the catalyst temperature when the abnormal combustion is detected. The first mode causes the gas control means to suppress the occurrence of the abnormal combustion while raising the catalyst temperature. The second mode causes the fuel injection amount control means to suppress the occurrence of the abnormal combustion while inhibiting an increase in the catalyst temperature. The third mode causes the gas control means and the fuel injection amount control means to suppress the occurrence of the abnormal combustion. |
