Four-wheel drive system with deceleration-responsive center diff

Details Four-wheel drive system with deceleration-responsive center diff Four-wheel drive system with deceleration-responsive center diff

1984-03-15

1985-09-03

Weakley, Harold W.

Motor vehicles

Having four wheels driven

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

180197, 180249, 180250, 747105, 303100, B60K 1734

Patent

active

045387001

ABSTRACT:
A four-wheel drive system has a center differential between front and rear wheels, and differential restraining or locking means for restraining or locking the center differential. The four-wheel drive system is equipped with an automatic control system for automatically locking the center differential in accordance with the deceleration of the vehicle. The control system may have means for determining a coefficient of friction between the tire and road surface in order to lock the center differential at a low vehicle deceleration when the sensed coefficient of friction is low.

REFERENCES:
patent: 4070924 (1978-01-01), Moreno
patent: 4075538 (1978-02-01), Plunkett
patent: 4320813 (1982-03-01), Mauua
patent: 4467886 (1984-08-01), DeClaire

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