Impact of Compressed Biogas on Combustion and Exhaust Emission Characteristic from Spark Ignition Engine

The demand of fossil fuel for transportation increases continuously while the fossil fuels resource is limit. Hence, the aim of experimental study is to investigate the effect of compress biogas as the alternative fuels on engine performance and emission in modified SI engine. The engine was modified and replaced fuel metering system to compress biogas system with standard ignition system configuration. The gas engine was operated under various engine speed (1500 - 3000 rpm) and different engine load at 25%, 50% and 75% of maximum load. The result shows that the gas engine fuelled with compressed biogas can enhance engine performance with low exhaust gas emission. Therefore, the utilization of compressed biogas is highly potential for automobile since it reduces the reliance on fossil fuels. In addition, compression biogas can support the growing demand of transportation fuels in the future.