Abstract
With ever increasing concerns on energy shortage and environment protection, the development of the battery electric vehicles (BEVs) has taken on an accelerated pace. In this paper, firstly, an AMT (Automatic Mechanical Transmission) without clutch and synchronizer used in battery electric bus is introduced. Then, the dynamics models of the shift process are created, and the factors that affect the shift performance are discussed. Finally, the AMT shift control strategy is designed and applied in the field buses. The on-road tests results show that the shift control strategy is valid and reliable, which meets the vehicle comfort and power requirements.
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