CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE

PROBLEM TO BE SOLVED: To provide a control device of an internal combustion engine capable of improving estimation accuracy of a soot discharge amount.SOLUTION: A control device of an internal combustion engine includes: soot discharge amount estimation means of estimating a soot discharge amount according to at least an engine rotational speed and a fuel injection amount; first correction means of correcting the soot discharge amount on the basis of an in-cylinder wall surface temperature and a fuel amount adhering to an in-cylinder wall surface, during fuel cut execution; and second correction means of correcting the soot discharge amount on the basis of the in-cylinder wall surface temperature, the fuel amount adhering to the in-cylinder wall surface, the fuel injection amount and fuel injection timing, during fuel cut restoration.SELECTED DRAWING: Figure 6 【課題】スート排出量の推定精度を向上させることができる内燃機関の制御装置を提供する。【解決手段】少なくともエンジン回転速度と燃料噴射量とに応じてスート排出量を推定するスート排出量推定手段と、フューエルカット実行中に筒内の壁面温度及び筒内の壁面に付着した燃料量に基づいてスート排出量を補正する第１の補正手段と、フューエルカット復帰中に筒内の壁面温度及び筒内の壁面に付着した燃料量及び燃料噴射量及び燃料噴射時期に基づいてスート排出量を補正する第２の補正手段と、を備えることを特徴とする。【選択図】図６