Four-wheel steering apparatus for vehicles

Details Four-wheel steering apparatus for vehicles Four-wheel steering apparatus for vehicles

1987-03-30

1988-04-26

Weaver, Ross

Land vehicles

Wheeled

Running gear

180142, B62D 700

Patent

active

047400021

ABSTRACT:
The rear wheels of a vehicle are turned together with the front wheels in response to the operation of a steering wheel. Turning ratio changing means is provided so as to be able to change a turning ratio of the rear wheels to the front wheels. In altering the turning ratio, a speed of changing the turning ratio is designed to get delayed when a road surface is more slidable or slippery, i.e., a road surface friction coefficient .mu. is smaller, as compared to when a road surface is less slidable or less slippery, i.e., a road surface friction coefficient .mu. is larger.

REFERENCES:
patent: 4572316 (1986-02-01), Kanazawa et al.
patent: 4624476 (1986-11-01), Tanaka et al.
patent: 4669744 (1987-06-01), Sano et al.
patent: 4679808 (1987-07-01), Ito et al.
patent: 4690431 (1987-09-01), Ito et al.

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