Numerical and experimental evaluation on the pooled effect of waste cooking oil biodiesel/diesel blends and exhaust gas recirculation in a twin-cylinder diesel engine

Nowadays, worldwide, many countries are engaged in reducing the vehicular exhaust emissions from diesel engines as main source of power various transport applications. Biofuels obtained feedstocks serve a better alternative fuel CI because its emission capabilities. The major drawback usage biofuels engine is rise formation nitrogen oxides which would be harmful to human health. WCO biofuel was processed using trans-esterification technique and contents available were analyzed gas chromatography mass .spectroscopy (GCMS). Four different blends, namly B100, B60, B40, B20 made. physio-chemical properties prepared test fuels identified ASTM standards. investigation on characterisation performance, combustion, sound done. Fuel combustion modeling done ANSYS Fluent for diesel, best suited blend experimental results. From both simulated results, it found that with maximum reduction 17% unburned hydrocarbon (HC), 30% carbonmonooxide (CO), 14.08% smoke, 7.35% carbondioxide (CO2) 16.46% increase NOx respectively. With an intention reduce selected fuel, EGR at three rates, namely (5%, 10%, 15%) utilized. Again, experiments conducted varying rates fuel. A good percentage rates. But other like CO, HC, CO2 Thus, comparison made values all types optimize rate leading into inlet charge. 10% gave 16.34% without affecting much Smoke, along small drop performance.