Effect of Technical Modifications on the Fuel Consumption and Emission Level of Biodiesel-Diesel Blended (B30) Fuel Engine

Abstract

The use of the mixed of biodiesel and diesel (BXX) will affect the performances of engines that are previously used for pure diesel. Therefore, this study was conducted to determine the appropriate technical modifications that can be applied in the B30-fueled generator set. Several modifications were carried out such as no modification (as a control), the addition of fuel preheater, the change of the injector nozzle specifications, and the combined modifications in the B30 fuel generator set. The results of the study revealed that the addition of fuel preheater reduced fuel consumption, CO emission around 20% and 7.6% respectively. In contrast, there was an increase of the output voltage by 0.7%. Moreover, the change of the injector nozzle specifications showed a decrease in fuel consumption and output voltage around 7.92% and 2.2% respectively, but increase in CO emissions by 62.3%. The combined modification showed the reduction of fuel consumption and output voltage around 12.45% and 2.6%, respectively. However, the CO emission increased around 90%. In summary, the best modification for biodiesel-diesel blended (B30) fuel engine was found in the engine with the addition of preheater modification because it gives high fuel consumption but low emission level.