Effect of EGR on a diesel engine fueled with waste plastic oil blend

Abstract

With the increasing global demand for fuels, there is a need to reduce vehicular emissions which are one of the major causes of air pollution around the globe. NOx emissions leads to health issues, acid rain, global warming, etc. Diesel engines are the major sources for NOx emissions. Hence there is a need to reduce the emissions from the engines by means of alternate fuels and emission control technologies. This investigation deals with the effect of exhaust gas recirculation (EGR) on single cylinder, direct injection diesel engine using plastic oil and diesel blend (10% plastic oil + 90% diesel) at EGR rates of 5%, 10% and 15%. Plastic oil blends were able to operate in diesel engines without any modifications and based on the results, EGR decreases the NOx emissions with a minimum increase in specific fuel consumption. The engine with the EGR rate of 15% and at the full load condition, the emission level of NOx has been decreased from 1327 to 661 ppm. Hence it was concluded that the low emission level of NOx can be obtained using EGR for the plastic oil blend. The results showed that DPB+EGR15 blend had the least NOx emission.

Waste plastic oil to fuel: An experimental study in thermal barrier coated CI engine with exhaust gas recirculation

“…It was determined that as the engine load raised, the ignition delay decreased in all operating modes. Consequently, with the increased temperature inside the cylinder, more fuel is vaporized, reducing the chemical delay and the delay period (Balaji et al., 2021). The ignition delay of WPO at full load was 2.84% and 8.29% higher than the coated retarded injection timing engines, respectively than for the same engine with 10% and 20% EGR.…”

“…The finding indicates that the WPO fuel‐fueled LHR engine with a delayed timing can produce a 91 J/°CA maximum heat release rate of 6.57%; and 13.63% greater than the maximum pressure with 10% and 20%, respectively, EGR rates. As a result of combustion, the fuel's heat release behavior is affected by the addition of exhaust gas (Balaji et al., 2021; Serio et al., 2017). Furthermore, when NOx emissions are decreased, a decrease in heat release rate is necessary.…”