Four-wheel steering vehicle

Details Four-wheel steering vehicle Four-wheel steering vehicle

1988-08-30

1989-06-20

Marmor, Charles A.

Motor vehicles

Including one or more ski-like or runner members

With at least one surface-engaging propulsion element

180142, 280 91, 303 92, 303100, B62D 504, B60T 800

Patent

active

048402435

ABSTRACT:
A four-wheel steering vehicle including a four-wheel steering mechanism for controlling a steering of front and rear wheels based on a predetermined steering ratio property in accordance with an operation of a steering wheel, and an anti-lock braking system for controlling a braking force acted on each of the front and rear wheels to prevent the wheels from locking during a braking operation. The vehicle further comprises a stepping motor for controlling a steering ratio of a steering amount of the rear wheels to a steering amount of the front wheels in accordance with a vehicle speed based on said steering ratio property, fail detecting device for detecting an abnormal condition of the anti-lock braking system, compensating device for receiving signals from the fail detecting device and compensating the steering ratio property so that the rear wheels are steered in a direction and amount to improve a driving stability of the vehicle during a braking operation.

REFERENCES:
patent: 4499543 (1985-02-01), Matuda
patent: 4572316 (1986-02-01), Kanazawa et al.
patent: 4590409 (1986-05-01), Kubota
patent: 4740002 (1988-04-01), Miyashi
patent: 4782907 (1988-11-01), Morishita et al.

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