Front and rear wheel turning system for vehicle

Details Front and rear wheel turning system for vehicle Front and rear wheel turning system for vehicle

1991-07-26

1992-01-21

Hill, Mitchell J.

Motor vehicles

Including one or more ski-like or runner members

With at least one surface-engaging propulsion element

180 791, 180142, 280 91, 36442405, B62D 504, B62D 700

Patent

active

050820800

ABSTRACT:
A four-wheel steering system includes a front wheel turning mechanism which turns the front wheels in response to the turning of the steering wheel, a rear wheel turning mechanism which turns the rear wheels in response to the turning of the steering wheel, and a power steering mechanism. The rear wheel turning mechanism changes the rear wheel turning angle ratio, which is the ratio of the rear wheel turning angle to the front wheel turning angle, on the basis of predetermined rear wheel turning angle ratio characteristic curves. The assisting force of the power steering mechanism is changed when the rear wheel turning mechanism fails.

REFERENCES:
patent: 4601357 (1986-07-01), Miyoshi et al.
patent: 4716981 (1988-01-01), Murao
patent: 4740002 (1988-04-01), Miyoshi
patent: 4862366 (1989-08-01), Morishira
patent: 4934474 (1990-06-01), Sugasawa
patent: 4979115 (1990-12-01), Takahashi

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