1. School of Automotive and Traffic Engineering, Jiangsu University , Zhenjiang 212013 , China
2. Institute for Energy Research, Jiangsu University , Zhenjiang 212013 , China
3. Institute for Internal Combustion Engines, Dalian University of Technology , No. 2 Linggong Road , Dalian , Liaoning 116023 , China
4. Faculty of Engineering, Kitami Institute of Technology , 165 Koen-cho, Kitamishi , Hokkaido , 090-8507 , Japan