Abstract
To optimize the cycle-based fuel economy of the heavy duty vehicle, a driver assistant system with coordinated power system and dynamometer control is developed, and the automatic driving cycle calibration is carried out. The developed system can control the cyclic speed error within the range of ±3km/h. Economic calibration tests were carried out for a certain non-road power system under different debugging rules. The results show that the optimized shift law can reduce fuel consumption by 21.7% compared with the original shift law in typical sand-gravel pavement. The driver assistant system developed has good following effect and high practical value.
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