CPC B60K 23/0808 (2013.01) [B60K 2023/0858 (2013.01); B60W 2556/45 (2020.02); B60W 2720/403 (2013.01); B60Y 2200/221 (2013.01)] | 20 Claims |
1. A vehicle comprising:
rear ground traction members;
front ground traction members;
a rear drive system to drive the rear ground traction members;
a continuously variable speed front drive system to drive the front ground traction members;
a rear speed sensor to output rear speeds of the rear ground traction members;
a front speed sensor to output front speeds of the front ground traction members; and
a controller to:
select a chosen lead for a rear speed of the rear ground traction members based on evaluations of different tractive efficiencies for different leads for the rear speed; and
output control signals to the continuously variable speed front drive system to drive the front ground traction members at the chosen lead.
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