Draft Power Optimization for Improved Bulldozing Production

A method of improving bulldozing production has been developed which allows the tractor operator to continuously optimize the effective work done by the bulldozer. The system contains sensors to measure both the effective draft force and true ground speed of the tractor. The electronic system is designed to multiply the two measurements to yield the draft power product (force X speed). Dozer production can be maximized if the operator controls the blade to continuously obtain the highest values of draft power.

Field evaluations of the draft power system consisting of 42 separate tests, indicated that dozer production can be increased by 10-20% by optimizing the draft power meter indication observed by the operator. The field testing program also showed that a reliable production prototype of the draft power system could be developed from the laboratory prototype tested.

Currently, field testing of revised components is underway at an active coal mining operation in Texas. These tests will provide realistic assessment of the benefits of the system in reclamation of surface-mined lands.