Front-and-rear wheel drive vehicle

Abstract

A front-and-rear wheel drive vehicle includes: an engine driving one of pairs of front wheels and rear wheels; a motor driving the other pair of wheels; a wheel speed sensor detecting wheel speeds of the other pair of wheels; a dog clutch provided between the motor and the other pair of wheels; a motor rotation number estimating unit estimating the motor rotation number from the current value and the duty value of the motor; and a control unit controlling the motor rotation number and the engagement of the dog clutch. The control unit engages the dog clutch after the control unit controls the motor rotation number such that the motor rotation number estimated by the motor rotation number estimating unit coincides with motor rotation number corresponding to wheel speeds detected with the wheel speed sensor.

Dependencies are inferred from the claim text.