Experimental investigation of the performance and emissions of a diesel engine fuelled by blends containing diesel s10, pyrolysis oil from used tires and biodiesel from waste cooking oil

Using tire-derived fuels can offer an alternative solution for tackling the problem of tire disposal. Similarly, biodiesel from waste cooking oil allows for the reduction of most environmental impacts caused by the incorrect disposal of oil. Thus, an analysis of blends containing traditional diesel, different amounts of pyrolysis oil from used tires and biodiesel from waste cooking oil has been proposed herein, with the aim of investigating the feasibility of using them in a diesel engine and analyzing their emissions and power in comparison with traditional diesel fuel. Tests were carried out using a single-cylinder diesel engine with a maximum rated power of 5.6 kW and its emissions were measured with a gas analyzer. The results revealed that using small amounts of tire pyrolysis oil in the blends (up to 5%) leads to a very small decrease in brake thermal efficiency (BTE) while emitting fewer CO and NOx pollutants, when compared to neat diesel. However, adding higher quantities of tire-pyrolysis oil causes a notable loss in BTE while increasing CO, decreasing NOx and emitting considerably more sulfur. Finally, replacing portions of diesel with biodiesel in diesel-tire pyrolysis oil blends decreased CO, but at the cost of increasing NOx emissions. (c) 2019 American Institute of Chemical Engineers Environ Prog, 38:e13146, 2019