CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE

To provide a control device of an internal combustion engine in which an accurate output of the internal combustion engine can be obtained, even on the occurrence of a decrease of an opening area of an opening of a throttle valve due to deposition of deposits adhering to the opening of the throttle valve.SOLUTION: A correction function calculation unit is provided for calculating a characteristic curve that determines a correction value every throttle opening on the basis of learning results of a learning value (air-flow rate varying by accumulation of deposits adhering to a throttled part), and thereby a calculated value for each throttle opening calculated on the basis of the characteristic curve is made as the correction value. The correspondence between the throttle opening and the air flow rate is learned, and an adaptation table at the decrease of a passage air flow rate assuming a state of being clogged up most is used about a closing side from the learned opening degree. A learning value of a clogging state is used in the vicinity of the learned opening degree. Also, two adaptation tables at the decrease of the passage air flow rate being close to the value of the learning value are selected about the opening side from the learned opening degree, and the optimal clogging correction can be made using the value obtained by performing interpolation calculation between the learning value and itself.SELECTED DRAWING: Figure 8 【課題】スロットルバルブの開口部に付着するデポジットの堆積により、スロットルバルブの開口部の開口面積の減少が生じる場合でも、精度の良い内燃機関の出力を得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】学習値（スロットル部に付着するデポジットの蓄積によって変化する空気流量）の学習結果を基にスロットル開度毎の補正値を定める特性カーブを算出する補正関数算出部を有し、特性カーブを基に算出したスロットル開度毎の計算値を補正値とする。スロットル開度と空気量の対応関係を学習し、学習された開度より閉じ側については、最も詰まった状態を想定した通過空気量低下時適合テーブルを使う。学習された開度付近では、詰まり状態の学習値を使う。また、学習された開度よりも開き側については、前記学習値の値に近い通過空気量低下時適合テーブルを二つ選び、学習値との間で補間計算した値を使うことで、最適な詰まり補正を行うことを可能とする。【選択図】図８