1. Waseda University Propulsion and Energy Systems Laboratory, , B58-226, 3-4-1 Okubo, Tokyo 169-8555 , Japan
2. Waseda University Propulsion and Energy Systems Laboratory, , B58-226, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555 , Japan
3. HKS Co., Ltd. Department of Advanced Development Project, , Fujinomiya, Shizuoka 418-0192 , Japan
4. Tokyo Gas Co., Ltd. NGV Business Office, , Minato, Tokyo 105-8527 , Japan
5. Guangdong Technion-Israel Institute of Technology , Shantou 515063, Guangdong , China ;
6. Technion-Israel Institute of Technology , Technion, Haifa 3200003 , Israel
7. Zhejiang University Power Machinery and Vehicular Engineering Institute, , Hangzhou 310027, Zhejiang , China