CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE

PROBLEM TO BE SOLVED: To curb or avoid a problem with degradation of restart ability of an internal combustion engine due to a back-flow of exhaust into an intake passage while the internal combustion engine is stopped.SOLUTION: A control device of an internal combustion engine adjusts electric voltage applied to an electric motor or a magnitude of electric current when restarting the internal combustion engine depending on a quantity of at least one of the followings: a flow rate of exhaust gas flowing adversely from an exhaust passage to an intake passage during a period from a stop of an internal combustion engine to a restart thereof; a concentration of the exhaust gas flowing adversely from the exhaust passage to the intake passage and stagnating in the intake passage during the period from the stop of the internal combustion engine to the restart thereof; and a substitute value to estimate the flow rate or the concentration of the exhaust gas flowing adversely from the exhaust passage to the intake passage during the period from the stop of the internal combustion engine to the restart thereof. 【課題】機関の停止中に、吸気通路まで排気が逆流することにより、内燃機関の再始動性が悪化する問題を抑制、ないし回避する。【解決手段】内燃機関の停止から再始動までの間に、排気通路から吸気通路に逆流する排気ガスの流量、内燃機関の停止から再始動までの間に、排気通路から吸気通路に逆流して吸気通路内に滞留した排気ガスの濃度、及び、内燃機関の停止から再始動までの間に、排気通路から吸気通路に逆流する排気ガスの流量、または濃度を推定するための代用値のうち少なくとも一つの値の多寡に応じて、内燃機関の再始動時に、電動機に印加する電圧、または電流の大きさを調整する内燃機関の制御装置を構成した。【選択図】図３