1. State Key Laboratory of Engines, Tianjin University, Tianjin, China
2. National Industry-Education Platform for Energy Storage, Tianjin University, Tianjin, China
3. Guochuang Hydrogen Technology Co. Ltd, Dalian, China
4. Internal Combustion Engine Research Institute, Tianjin University, Tianjin, China
5. School of Engineering, University of Lincoln, Lincoln, UK