| 摘要 |
PROBLEM TO BE SOLVED: To suppress an occurrence of unstable vehicle behavior or shock of being pushed forward, when shifting from two-wheel drive to four-wheel drive.SOLUTION: When a difference between wheel speed of a driven wheel and the rotational frequency of a driving force transmission shaft becomes larger than a prescribed value during two-wheel driving, disconnection/connection means is controlled so that power transmission between the driving force transmission shaft and the driven wheel is connected, or driving force distribution means is controlled so that power transmission between the driving force transmission shaft and a main driving wheel is connected. |
