Improvements in transmission systems for motor vehicles with four-wheel drive.

摘要

In a transmission system forfour wheel drive motor vehicles with a front-mounted engine and gearbox disposed transverse the longitudinal axis of the motor vehicle, of the type including a front differential (3) and an intermediate differential (18) both housed in a casing rigid with the gearbox, the intermediate differential (18) is located within a part (9a) of the gearbox while the front differential (3) is housed in a separate casing (9b) fixed to the gearbox (9a). The steps needed to adapt a system provided initially for front-wheel drive only as to also allow rear-wheel drive is thus simplified.