An Experimental Assessment on the Impact of Injection Pressure on the Characteristics of a Diesel Engine Powered with the Blend of Diesel and Microalgae Biodiesel
Microalgae was recognized as the sustainable energy feedstock for producing biofuels. Now bio-diesel produced from algal biomass is getting ready to address the energy crisis that the world would face tomorrow. This paper deals with the utilization of microalgae biodiesel at 30% blend, to investigate the influence of operating parameter such as injection pressure on the characteristics of a compression ignition engine. Microalgae crude oil was derived from chlorella vulgaries and it was converted into microalgae methyl ester (MME) using transesterification process. The desired test fuel was prepared by mixing of 30% MME with 70% pure diesel and designated as B30. The experiment was performed on a single four-stroke cylinder diesel engine powered with B30 at various fuel injection pressures 180 bar range, 200 bar and 220 bar range. The experimental findings showed that there was no important effect on BSFC from altered injection pressures, while BTE was increased at 200 bar by a maximum of 14.09 percent. At 200 bar injection pressure, exhaust emissions such as CO, CO2, UHC and smoke opacity were enhanced mostly, but NOX emissions were reduced, and increases in cylinder peak pressure were only discovered at 200 bar.