| 摘要 |
Providing an exhaust gas recirculation control device of an internal combustion engine by which overshoots or undershoots of an EGR control valve can be prevented, and the tracking performance as to target openings as well as the reliability of the device can be enhanced based on simple control logic. An exhaust gas recirculation control device, being provided with: a feedback control unit 51, and a feed-forward control unit 57, wherein the device is provided with: an adder 73 which adds a feed-forward control command signal 57 to a feedback control command signal 65; and a maximum selection function-section 77 which compares an added value obtained by the adder 73 with a feed-forward control command signal 57 or a command signal from an EGR valve maximum opening map, and selects the command signal by which the valve opening of the EGR control valve is brought to a closed side, wherein the command signal by which the valve opening of the EGR control valve is brought to an opened side is not outputted. |
