Rear wheel steering apparatus for vehicles

Details Rear wheel steering apparatus for vehicles Rear wheel steering apparatus for vehicles

1990-10-25

1992-03-31

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, B62D 512

Patent

active

050999389

ABSTRACT:
The invention is directed to an apparatus for steering rear wheels of a vehicle. A vehicle speed sensor detects a speed of the vehicle, and a steering angle sensor detects a steering angle of front wheels of the vehicle and provides a first steering signal. A control device is provided for receiving the first steering signal and providing a second steering signal representing a desired steering angle of rear wheels of the vehicle which is determined in response to the first steering signal. A drive device is arranged to receive the second steering signal and steer the rear wheels to reach the desired steering angle. Then, a limit mechanism is provided for reducing the range of variation of steering angle of the rear wheels steered by the drive device to a predetermined range when the vehicle speed exceeds a predetermined speed, or the steering angle of the front wheels is less than a predetermined angle. Accordingly, when the vehicle is traveling at high speed, or when the vehicle turns with a large turning radius, the steering angle of the rear wheels is prevented from being unnecessarily varied.

REFERENCES:
patent: 4572316 (1986-02-01), Kanazawa et al.
patent: 4657102 (1987-04-01), Kanazawa et al.
patent: 4811805 (1989-03-01), Yoshida
patent: 5007494 (1991-04-01), Ohmura et al.
patent: 5052506 (1991-10-01), Nishimori et al.

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