Control system for four-wheel drive vehicle

Details Control system for four-wheel drive vehicle Control system for four-wheel drive vehicle

1992-06-24

1994-01-04

Focarino, Margaret A.

Motor vehicles

Having four wheels driven

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

180249, 3644241, B60K 1734

Patent

active

052752542

ABSTRACT:
A control system for a four-wheel drive vehicle includes a first differential provided between a front shaft and a rear shaft and a second differential provided between a right wheel and a left wheel. The control system comprises a first device provided in the first differential for restricting a differential between the front shaft and the rear shaft, a second device provided in the second differential for restricting a differential between the right wheel and the left wheel, and a device for controlling the restricting operations carried out by the first device and the second device. The controlling device includes a device for controlling operational timings in the first device and the second device so that the timing when the first device maintains the first differential in locking condition is different from the timing when the second device maintains the second differential in locking condition.

REFERENCES:
patent: 4874059 (1989-10-01), Kasegawa
patent: 4937750 (1990-06-01), Gilliam
patent: 5010974 (1991-04-01), Matsuda
patent: 5119900 (1992-06-01), Watanabe et al.
patent: 5152362 (1992-10-01), Naito

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