Drive control system of four-wheel drive vehicle

Details Drive control system of four-wheel drive vehicle Drive control system of four-wheel drive vehicle

1990-10-01

1992-02-25

Marmor, Charles A.

Motor vehicles

With means for detecting wheel slip during vehicle...

180249, B60K 2816

Patent

active

050905104

ABSTRACT:
A drive control system of a four-wheel drive vehicle has a differential device interposed between front and rear wheels and a differential restricting device mounted to the differential device. The differential restricting device is subjected to feedback control so as for the wheels to reach a target slip ratio. In this control, a control target value is given by way of slip ratios of the wheels and the target slip ratios are then converted into a wheel speed difference between the front and rear wheels. The feedback control of the differential restricting device is performed by comparing the target wheel speed difference with an actual wheel speed difference between the front and rear wheels.

REFERENCES:
patent: 4709775 (1987-12-01), Watanabe et al.
patent: 4723624 (1988-02-01), Kawasaki et al.
patent: 4738332 (1988-04-01), Wright
patent: 4889204 (1989-12-01), Furuya et al.
patent: 4967869 (1990-11-01), Nagaoka et al.
patent: 4981190 (1991-01-01), Nakayama et al.
patent: 4985836 (1991-01-01), Hashiguchi et al.
patent: 4991678 (1991-02-01), Furuya et al.

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