Abstract
AbstractDriving control system which is composed of TC + AMT (Torque Converter + Automatic Mechanical Transmission) and TCS (Traction Control System) could improve vehicle’s performance of starting, accelerating and climbing on bad adhesion road. The similar improvement could also be achieved by a differential lock. They share overlap control field so that conflicts might exist. In this paper, a short-time four-wheel drive vehicle equipped with driving control system and differential locks is tested on icy road and split-mu road, which is covered by ice on one side and dry asphalt road on the other side. Road tests are carried out by turning on or off TCS and cooperating with differentials locked or unlocked separately. The TC and AMT are used during all tests. The results show that the proper cooperation of AMT, TCS and differential locks provides improved start-up performance on slippery road. However, if shifting up to 3rd gear is expected on split-mu road, manual differential locks are under qualified, while the TCS is more flexible and should be adopted.KeywordsRoad testDriving control systemDifferential lockInteraction and coordination
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