Four wheel drive system with center differential unlock control

Details Four wheel drive system with center differential unlock control Four wheel drive system with center differential unlock control

1984-04-16

1986-01-28

Yeung, James C.

Motor vehicles

Having four wheels driven

With differential means for driving two wheel sets at...

180247, B60K 1735

Patent

active

045665540

ABSTRACT:
A four-wheel drive system has a center differential between front and rear wheels, and means of restraining or locking the center differential. The four-wheel drive system is equipped with a control system for automatically unlocking the center differential when the steering angle becomes equal to or larger than a predetermined angle. The control system may further have a vehicle speed sensor. In this case, the control system unlocks the center differential only when the vehicle speed is equal to or lower than a predetermined speed.

REFERENCES:
patent: 3351147 (1967-11-01), Williamson
patent: 4298085 (1981-11-01), Moroto et al.
patent: 4417641 (1983-11-01), Kageyama
patent: 4470489 (1984-09-01), Makita

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