DRIVE SYSTEM FOR TRACTOR PULLING A SCRAPER

摘要

A drive system is provided for a towing vehicle 10 pulling a towed vehicle 12, such as a tractor pulling a scraper. The drive system includes a diesel engine 14 which drives a generator 18 for generating electrical power. Tractor drive motors 22 are drivingly connected to driven wheels 24 of the tractor. An assist drive motor 30 is drivingly connected to driven wheels 34 of the scraper. A power distribution unit 20 controls distribution of electric power from the generator to the tractor and assist drive motors. A control unit 62, 70 controls the power distribution unit as a function of vehicle speed.