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

1992-01-10

1993-07-13

Hill, Mitchell J.

Motor vehicles

Compensating devices

180140, 180142, 280 91, B62D 700

Patent

active

052264998

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 curve. A selecting switch selects one of a plurality of rear wheel turning angle ratio characteristic curves according to the running condition of the vehicle and causes the rear wheel turning mechanism to change the rear wheel turning angle ratio on the basis of the rear wheel turning angle ratio characteristic curve selected. The assisting force of the power steering mechanism is changed according to the rear wheel turning angle ratio characteristic curve selected by the selecting switch.

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