Effect of Exhaust Gas Recirculation on the Performance and Emissions of a Common Rail Diesel Engine Powered by B20 Mix Waste Cooking Oil Methyl Ester Using CFD

Internal combustion engines (IC engines) are broadly applied in goods and people transportation, as well as agricultural and industrial activities. The most widely recognized biodiesel mix is B20, 20% biodiesel is mixed with diesel. Many diesel vehicles can operate on B20 and relatively low blends without requiring any engine change. A number of computational fluid dynamics (CFD) assessments have also been performed since they have shown to be a beneficial tool in aiding with experimental work. A CFD Analysis of a Toroidal re-entrant combustion chamber (TRCC), 17.5 CR, Injection timing 10° BTDC and Injection pressure 900 bar with 0.2 mm dia 8 holes injector 4 stroke CRDI engine with WMCO biodiesel–diesel blends result is well accord with the experimental result. Further CFD analysis is carried out for different EGR rate for NOx reduction. The indicated thermal efficiency and indicated power are obtained constant for different EGRs. As percentage of EGRs increase, the percentage of NOx emission is reduced by 36, 40, and 80% for 10, 20, and 30% EGR rates, respectively, compared to 0% EGR. As percentage of EGR increases, Mean CO mass fraction is increased by 20,42, and 62 percentage for 10, 20, and 30% EGR’s compared to 0% EGR. As percentage of EGR increases, Mean Soot mass fraction is reduced by 6.25, 12.5, and 21.87 percentage for 10, 20, and 30% EGRs compared to 0% EGR. Ignition delay period increases with increase in percentage of EGR.