Control device for internal combustion engine

The present invention pertains to a control device for an internal combustion engine that executes exhaust gas recirculation control whereby the operational state of exhaust gas recirculation devices (50, 52) is controlled in accordance with a target exhaust gas recirculation amount (TRegr) set such that a detected air-fuel ratio (AFd) matches an estimated air-fuel ratio (AFe). When the sign of the ratio (Rtregr) of the amount of change of the actual target exhaust gas recirculation amount with respect to the amount of change of a standard exhaust gas recirculation amount setting parameter (Q) used to set a standard exhaust gas recirculation amount (Regrb) is the opposite of the sign of the ratio of the amount of change of a reference target exhaust gas recirculation amount with respect to the amount of change of the standard exhaust gas recirculation amount setting parameter, the execution of a learning function, whereby a learning correction value (KGn) is calculated on the basis of an instantaneous correct