POWER TRANSMITTING SYSTEM FOR A FOUR-WHEEL DRIVE VEHICLE

摘要

A torque distribution deciding control unit (50) a planetary gear device (20) as a central differential and an oil hydraulic clutch (27) having opposed disks are provided on a motor vehicle. The clutch (27) is disposed between output members of the planetary gear device, whereby torque is transmitted to front and rear wheels (10, 14) at a distribution ration decided by the torque transmission of the clutch. The control unit operates the clutch so as to distribute the torque at a ratio in accordance with slipping of either of the front wheels so as to reduce the torque to the slipping wheels.