CONTROL DEVICE FOR FRONT AND REAR-WHEEL-DRIVE VEHICLE

摘要

PROBLEM TO BE SOLVED: To provide a control device for a front and rear-wheel-drive vehicle capable of distributing driving force at the optimum energy efficiency while reducing power consumption and improving fuel consumption. SOLUTION: The control device 6 for the front and rear-wheel-drive vehicle having one of front and rear wheels driven by an engine and the other driven by a motor comprises target driving force setting means 62 for setting target driving force in accordance with a operating condition, a motor assisting driving force distribution ratio setting part (distribution ratio setting means) 63 for setting the driving force distribution ratio of engine driving force to motor driving force depending on the degree of fuel consumption improving contribution found from a predetermined first expression in accordance with the target driving force and a vehicle speed, and a generating travel driving force distribution ratio setting part (charging distribution ratio setting means) 64 for setting the charging distribution ratio of the engine driving force to the motor driving force depending on the degree of charging fuel consumption improving contribution found from a predetermined second expression in accordance with the target driving force and the speed. The engine driving force and the motor driving force are controlled in accordance with the driving force distribution ratio and the charging distribution ratio.