Effects of diesel‐ethanol-waste oil cooking and plastics blends reused in common rail direct injection diesel engine

The purpose of this study was to investigate the feasibility of transesterifying waste oils using alcohol and a catalyst to provide a sustainable fuel alternative. To ensure that the resulting biodiesel met American Society for Testing and Materials (ASTM) criteria, we studied its most important parameters of diesel‐ethanol-waste oil cooking and plastics blends. We were able to separate out three unique fuel mixtures: BF0 (100% diesel), E20 (20% ethanol and 80% diesel), W20 (20% waste cooking oil and 80% diesel), and P20 (20% waste plastics oil and 80% diesel). In this experiment, a single-cylinder, computer-controlled diesel engine with direct injection was used. Fuel consumption increased by 4.3% for W20, 6.7% for E20, and 0.4% for P20, while thermal efficiency decreased by 2.1% for W20, 4.2% for P20, and 2.1% for E20, based on measurements conducted at 23.5 °b top dead center (TDC), compression ratio (CR19) under full load. At 23.5 °b TDC injection time, NOx emissions were observed to be lower. Adding 20% W to conventional fuel at 23.5 °b TDC enhanced the engines combustion characteristics.