Utilization of natural gas for internal combustion engines

Natural gas is expected as one the promising alternative energies for the future. This study focused on CNG and GTL as an automobile fuel for internal combustion engines. The investigation. results reveal that CNG direct injection engine has good potential to improve the full load performance and to reduce the partial load CO2 emissions by stratified charge lean combustion. The GTL (FT Diesel) fuel showed the possibility of low emission diesel engine due to its advantage of zero aromatics and zero sulfur. But it was suggested that low volume change of elastomer dipped into the FTD fuel might cause fuel leakage in the fuel system.