Front and rear wheel steering device for a vehicle

Details Front and rear wheel steering device for a vehicle Front and rear wheel steering device for a vehicle

1986-03-27

1987-11-03

Pekar, John A.

Motor vehicles

Including one or more ski-like or runner members

With at least one surface-engaging propulsion element

180142, 280 91, B62D 500, B62D 700

Patent

active

047038225

ABSTRACT:
A front and rear wheel steering device which varies the steering angle ratio of rear wheels relative to the steering angle of front wheels in relation with vehicle speed is utilized to improve the drive response of a vehicle, as well as to improve the maneuverability of the vehicle. By varying the steering angle ratio which is a function of vehicle speed according to the running condition of the vehicle, the interference of the running condition of the vehicle upon the driving response can be reduced. The driving response may be evaluated in terms of yaw rate or lateral acceleration of the vehicle for a certain steering input. The running condition of the vehicle may comprise any combination of vehicle acceleration, friction between tires and the road surface, load acting between front wheels and the road surface, and load acting between rear wheels and the road surface.

REFERENCES:
patent: 4441572 (1984-04-01), Ito et al.
patent: 4566710 (1986-01-01), Furukawa et al.
patent: 4597462 (1986-07-01), Sano et al.
patent: 4598788 (1986-07-01), Serizawa et al.
patent: 4601357 (1986-07-01), Miyoshi et al.

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