Steering control device for vehicle having continuously variable

Details Steering control device for vehicle having continuously variable Steering control device for vehicle having continuously variable

1996-07-18

1998-12-22

Boehler, Anne Marie

Motor vehicles

Steering by driving

Combined with manual steering

180 648, 180 662, 180307, 180308, B62D 1104

Patent

active

058508864

ABSTRACT:
Left and right driven wheels are connected to a pair of continuously variable transmissions and independently driven. The driven wheels are increased or decreased in speed at the same rotational numbers by operation of a change lever so as to move a vehicle forward or backward. When a steering angle of a steering wheel exceeds a predetermined value, an inner wheel speed during turning of the vehicle is decreased and an outer wheel speed during turning of the vehicle is increased so as to turn the vehicle. If the steering wheel becomes greater than the predetermined value during forward running of the vehicle at a low speed, the inner driving wheels stop and the vehicle does a stationary turn. However, during forward running at a high speed or backward running of the vehicle, even if the steering wheel becomes greater than the predetermined value, the vehicle does not do a stationary turn. With this arrangement, it is possible to always obtain the optimal steering characteristic in accordance with variations of the vehicle speed or the steering wheel.

REFERENCES:
patent: 4273206 (1981-06-01), van der Lely
patent: 4484655 (1984-11-01), Sheppard
patent: 4616724 (1986-10-01), Kwiatkowski et al.
patent: 5540299 (1996-07-01), Tohda et al.

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