Effect of butanol additive with mango seed biodiesel and diesel ternary blends on performance and emission characteristics of diesel engine

Current research investigates performance and emission characteristics of single cylinder 4-S diesel engine powered by different ternary fuel blends of diesel, mango seed (potential renewable feedstock of energy generation) biodiesel (MSB) and butanol (promising, sustainable, renewable and eco-friendly) oxygenated additive at different loading conditions experimentally. For the purpose, oil is extracted from discarded mango seeds through Soxhlet apparatus and biodiesel is prepared through transesterification process. Different blending mixture of MSB (fixed in 20%), diesel (80%, 75%, 70%, and 65%) and butanol (0%, 5%, 10%, and 15%) additive on their volume basis are prepared through magnetic stirring. These blends are named as MSB20B0, MSB20B5, MSB20B10, and MSB20B15, respectively. Experiment reveals that MSB20B5 lowers the BSFC by 25.79% and increases the BTE by 8.46% in comparison to MSB20B0 at maximum loading and approaching diesel fuel. In addition, MSB20B5 blend reduces the exhaust pollutants such as HC, NOx, CO2, and CO by 9.16%, 17.74%, 9.92%, and 13.33%, respectively, compared to MSB20B0 biodiesel blend at maximum loading. Overall, MSB20B5 ternary blend improves engine performance and reduce emissions hence recommended for diesels.