Abstract
Researchers have recently attempted to discover alternative energy sources that are accessible, technically viable, economically feasible, and environmentally acceptable. The objective of this study is to investigate regulated and unregulated exhaust emissions with petroleum diesel fuel and Jatrophabased biodiesel blends at proportions of 20%, 40%, 60%, 80% and 100% (v/v). This study examines three regulated emissions: CO, NMHC and NOx, and two typical unregulated emissions: SO2 and formaldehyde. The CO and formaldehyde emissions increase at low engine loads, and decrease at high engine loads. The NMHC and NOx emissions of the five fuels continuously decrease as biodiesel blends increase. Besides, SME fuels can also reduce the SO2 emissions.
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