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Waste plastic oil and tyre oil are alternative supplements for Diesel engines and also they can decrease the use of fossil fuels. This study focused on experimentations with Diesel engine using blends of two different categorized distilled waste plastic oil and desulphurized tyre and plastic oil. Initially, crude waste plastic oil was obtained through pyrolysis reactor. After extraction, it was distilled into two different forms of waste plastic oils. The properties of extracted oils were evaluated and compared with those of diesel standard fuel. From investigations, it became clear that the brake thermal efficiency and specific fuel consumption of first stage distilled blends were closer to diesel values than the other samples. In respect of emission, the increased NO, CO, and unburnt HC were recorded with increase in the blending ratio. The diesel emitted about 2354 ppm of NOx, 0.136 vol.% of CO, and 59 ppm of unburnt HC while rich blends of distilled oils produced 2440 ppm of NOx, 0.162 vol.% of CO, and 64 ppm of unburnt HC. Based on the results, upto 30 vol.% of distilled waste plastic oil blends could be used in Diesel engine without modification. Beyond 30 vol.% of blends, unstable combustion occurred and engine vibration increased during higher loads.

Investigation of the performance, combustion parameters and emissions analysis on DI engine using two staged distilled waste plastic oil-diesel blends