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U.S. Department of Energy
Office of Scientific and Technical Information

Transmission systems for motor vehicles with four-wheel drive

Patent ·
OSTI ID:6949942

A transmission system is described for a motor vehicle having a front-mounted engine and gear box disposed transversely to the longitudinal axis of the motor vehicle wherein the gear box includes a gear box casing and a driven shaft having an output gear rotatably mounted in the gear box casing. The transmission system comprises an additional casing separate from the gear box casing, connecting means joining the gear box casing to the additional casing, and a front differential located in the additional casing and having a cage operatively coupled to the output gear carried by the driven shaft and a pair of half shafts for transmitting torque to front wheels respectively of the motor vehicle. It also includes a rear differential for transmitting torque to rear wheels of the motor vehicle and an intermediate differential constituted by an epicycle gear train housed within the gear box casing.

Assignee:
Fiat Auto S.p.A.
Patent Number(s):
US 4635504
OSTI ID:
6949942
Country of Publication:
United States
Language:
English