All-wheel steering systems

Details All-wheel steering systems All-wheel steering systems

1993-11-29

1995-05-23

Hill, Mitchell J.

Motor vehicles

Including one or more ski-like or runner members

With at least one surface-engaging propulsion element

180 2401, 280426, 280443, B62D 506

Patent

active

054172993

ABSTRACT:
A full-time all wheel steering system is provided whereby the rear wheel angle is determined by the front wheel angle and a relational curve, polynomial equation or set of tabulated values. The front wheel angle is measured and the desired rear wheel angle is calculated by a programmable controller. If the desired rear wheel angle is not sufficiently close to the actual rear wheel angle, the controller means sends a signal which results in adjustment of the rear wheel angle. The desired rear wheel angle may be a function of the vehicle speed as well as the front wheel angle. Further, the operator may select from a plurality of relational curves, polynomial equations, tabulated values as well as a plurality of manually selectable modes including an independent rear wheel steering mode. The system is applicable to passenger cars, trucks and tractor-trailer rigs.

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