Analysis and design of two-parameter shifting schedule for parallel hybrid electric bus
1. Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan University of Technology, Wuhan, Hubei 430070, China; 2. School of Automotive Engineering, Wuhan University of Technology, Wuhan, Hubei 430070, China; 3. Hubei Collaborative Innovation Center for Automotive Components Technology, Wuhan University of Technology, Wuhan, Hubei 430070, China
Abstract：According to the structure of parallel hybrid electric bus (PHEB) and typical China conditions, the parallel electric auxiliary control strategy was used for the PHEB. A segmented and crossed design method of shifting schedule was proposed to select appropriate shifting schedule based on the different operation modes of PHEB and the opening degree of throttle. The vehicle model and the parallel electric auxiliary control strategy were established with the cooperation between AVL Cruise and Matlab. The simulation results show that compared with the best economic shift control strategy, the acceleration performance is improved by 6.3%, and the economy is greatly improved compared with the optimal power shift control strategy. The simulation study of dynamic performance and fuel economy demonstrates that the designed shifting schedule can ensure the vehicle dynamic performance with suitable economy.
2016, Vol. 37 
