An engine control device for controlling an exhaust gas recirculation
operation includes a variable-capacity turbo supercharger, an EGR valve,
a supercharging pressure controller, an EGR controller, and an EGR
correction amount calculator. The variable-capacity turbo supercharger
varies a flow through an exhaust turbine to change a supercharging
pressure. The EGR valve adjusts an exhaust reflow amount of gas flowing
from an exhaust passage to an air intake passage. The supercharging
pressure controller drives the supercharger to control the supercharging
pressure. The EGR controller drives the EGR valve to control the exhaust
gas recirculation operation. The EGR correction amount calculator
calculates an EGR correction amount according to a change in the exhaust
gas recirculation operation. The EGR controller performs a feedback
control operation on the EGR valve in accordance with a deviation between
an EGR control amount corrected by the EGR correction amount and a target
EGR control amount.