Numerical analysis of performance and emission behavior of CI engine fueled with microalgae biodiesel blend

The objective of current numerical analysis is to assess the compression ignition engine performance and emission indices using diesel (B0), spirulina microalgae biodiesel (SMB) blends (SMB20, SMB40, and SMB60) as fuel. The engine chosen for the experimental evaluation and tool validation is 4-stroke solo cylinder of direct injection type diesel engine cooled with water. The numerical assessment is conducted with advanced timing (23.5 = b TDC) of injection and nozzle opening pressure (NOP) 220 bar with half and 100% load condition. The results obtained have shown that SMB20 (20% of spirulina microalgae biodiesel and 80% base fuel) similar results to base fuel (diesel fuel). All spirulina microalgae biodiesel blends reduce brake torque (BT) by 5.7%, indicated efficiency by 0.52% and mechanical efficiency 5.5% at load full condition. Engine exhaust emission results showed that mixed fuel diminishes the oxides of nitrogen (NOX) emission by 4.96% and smoke emission by 11.0% and enhance specific carbon dioxide (CO2) by 3.4% for SMB20 blend at full load condition. The rate of formation of soot (1/deg.) was obtained to be 1.46 for DF, SMB20 by 1.23 and SMB100 by 0.92. (c) 2021 Elsevier Ltd. All rights reserved. Selection and peer-review under responsibility of the scientific committee of the International Conference on Advancement in Materials, Manufacturing and Energy Engineering (ICAMME-2021).