1. Marine Engineering College, Dalian Maritime University, 116026, Dalian 116024, China
2. Liaoning Research Center for Marine Internal Combustion Engine Energy-Saving, Dalian 116024, China
3. Low Carbon Energy Institute, China University of Mining and Technology, Xuzhou 221008, P. R. China
4. School of Electronic and Information Technology, Guangdong Ocean University, Zhanjiang, Guangdong 524088, China