To enhance drivability by carrying out additive processing of a driver's requirement and the requirement of an engine.

A negative pressure control target intake amount is calculated (105) to be converted to torque (106). A larger one of either ISC target torque or the negative pressure control target intake torque amount conversion value is selected to be determined as an engine requirement torque (108). The engine requirement torque is added to a driver's requirement torque to determine a resultant addition value as a target torque (109). An electrically controlled throttle valve is controlled based on the target torque.