Transmission for all wheel drive vehicle has speed change drive with longitudinal differential having viscous coupling between planet and sun wheels

摘要

The transmission for an all wheel drive vehicle has a speed change drive (12) and a longitudinal differential (16) for drive distribution between the front and rear differentials. The power flow between the longitudinal differential planet carrier (32) and an output sun wheel (36) is a viscous coupling (46) to accommodate speed differentials in the drive.