Steering control device for vehicle having continuously variable transmission

摘要

Left and right driven wheels (Wf, Wf) are connected to a pair of continuously variable transmissions (T) and independently driven. The driven wheels (Wf, Wf) are increased or decreased in speed at the same rotational numbers by operation of a change lever (10) so as to move a vehicle (1) forward or backward. When a steering angle of a steering wheel (8) exceeds a predetermined value, an inner wheel speed during turning of the vehicle (1) is decreased and an outer wheel speed during turning of the vehicle (1) is increased so as to turn the vehicle (1). If the steering wheel angle becomes greater than the predetermined value during forward running of the vehicle (1) at a low speed, the inner driving wheels stop and the vehicle (1) does a stationary turn. However, during forward running at a high speed or backward running of the vehicle (1), even if the steering wheel angle becomes greater than the predetermined value, the vehicle (1) 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 (8). <IMAGE>