Experimental Studies on a Natural Gas Vehicle

Technical overview of compressed natural gas (CNG) as a transportation fuel

“…One of the other major problems with the CNG engine is the gaseous nature of the CNG fuel which causes the reduction in volumetric efficiency up to 10% by displacing the air available for proper combustion [38,45,[50][51][52][53][54][55][56][57]. The maximum potential power therefore will reduce by up to 10% compared to a gasoline engine under similar condition.…”

The effect of spray angles of the injector on the power of compressed natural gas direct injection (CNGDI) engine

“…One of the promising alternative fuels for the application in internal combustion (IC) engines is compressed natural gas (CNG) due to its cleaner combustion products by producing 21% less carbon dioxide (CO2), 24% less carbon monoxide (CO) and 27% less nitrogen oxides (NOx), than gasoline under the same engine operations and configurations [1,2]. Natural gas-fuelled engine has the potential for obtaining higher thermal efficiency due to the higher octane value and lower CO2 exhaust emissions as a result of the small non methane organic gasses (NMOG) formation and lower carbon-to-hydrogen ratio [2].…”