ENGINE CONTROL DEVICE

A control device changes an operation line of an engine to an operation line according to an alcohol concentration on the condition that warm-up of the engine has been completed. Thus, when warm-up of the engine has been completed, the control device changes an operating point that is set according to a required output toward a higher torque side and a lower speed side when the alcohol concentration in a blended fuel is high than when the alcohol concentration in the blended fuel is low. When warm-up of the engine has not been completed, the control device does not execute the change according to the alcohol concentration in the blended fuel of the operating point set according to the required output.