Investigation on a Direct Injection Diesel Engine fuelled with blends of Waste Plastic Oil with a Three hole Fuel Injection Nozzle

Abstract

Plastics have been one of the fastest growing materials due to versatility, wide range of applications and relatively at low. As the duration of useful life of plastic products is relatively small, a vast plastics waste stream is creating a serious environmental problem. Disposal of post-consumer plastics is being a serious constraint, a considerable demand for alternatives to disposal or land filling. Among the alternatives, production of liquid fuel would be a better alternative as the calorific value of plastics is comparable to that of fuels, around 40 MJ/kg. Other properties of the oil derived from waste plastics were also similar to the petroleum-based diesel. In the present work, blends of 20%, 40%, 60%, 80% Waste Plastic Oil (WPO) with diesel and 100% WPO are considered to investigate the performance, and emission characteristics in an existing diesel engine. For better understanding of the results, an injection time of 230 BTDC, 200 bar fuel injection pressure, and a 3 holes injector is used throughout the investigation. Some better performance and emission characteristics were observed from all the blend ratios. However, 20% WPO and 80% diesel blend gave better results as compared to other waste plastic oil blends.