An experimental study on the influence of antioxidant additive on emission traits of CI engine utilizing flamboyant biodiesel blends.

Fossil fuels are regarded as a primary source for energy and human transportation. The formation of fossil fuels involves millions of years; furthermore, it produces harmful emissions during their combustion. Biodiesels are regarded as a potential substitute for fossil fuels, as they are sustainable. In contrast to several benefits, the feedstock availability and physicochemical properties are regarded as drawbacks of biofuels. In the present work, flamboyant biodiesel blends recovered from similar seeds through transesterification are utilized on a 5.2-kW CI engine to access the emission traits. The result outcomes revealed that the seed has an oil content of 30%. The transesterification process carried out at 60 °C and 200 rpm with a 1:6 oil-methanol ratio resulted in a better yield of 82%. At peak load, the B25 blend outperformed with better BSFC and BTHE of 0.27 kg/kWh and 30.96%. At a similar load, the EGT and SD of the similar blend were found to be 323 °C and 51 HSU, while the emissions of CO, HC, and NOX were found to be 0.09 (% by volume), 57 ppm, and 1058 ppm respectively. In the later phase of the investigation, PPDA antioxidant was introduced in varied concentrations to decline NOX emissions; the outcomes revealed that the 0.20 g PPDA outperformed in declining NOX emission. Clinical trial number: not applicable.