1. School of Automotive Engineering, Chongqing University, Chongqing 400044, China; State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400044, China
2. School of Automotive Studies, Tongji University, Shanghai 201804, China
3. School of Automotive Studies, Tongji University, Shanghai 201804, China; Chinesish-Deutsches Hochschulkolleg, Tongji University, Shanghai 201804, China