1. Shaanxi Key Laboratory of New Transportation Energy and Automotive Energy Saving, Chang'an University, Xi'an 710064, China
2. School of Civil and Transportation Engineering, Qinghai Minzu University, Xining 810000, China
3. College of Mechanical Engineering, Guangxi University, Nanning 530004, China
4. Vehicle Measurement, Control and Safety Key Laboratory of Sichuan Province, Xihua University, Chengdu 610039, China