MEASUREMENT OF PERFORMANCE AND EMISSION CHARACTERISTICS OF BIODIESEL, ETHANOL, AND PEROXIDE BLENDS IN HEAVY-DUTY ENGINE

Abstract

Diesel engines, in the last 20 years, there has been a significant shift toward greater efficiency, environmental protection. By changing the pure Diesel into blends of Biodiesel, we can reduce emissions from the engine and make some changes in engine design, improving the turbulence or swirl in the cylinder and improving the combustion process, leading to better performance and lower performance emissions. In the current work, Waste Cooking Oil (WCO) is used for producing Biodiesel as alternate fuel in the CI engine. Also, blends were prepared from DTBP additive and Ethanol that fuelled laboratory-scale heavy duty Diesel. The engine used is a 909cc, two-cylinder, four-stroke, water cooled, BS6, brake power ranging from 0 to 15 kW, and an Exhaust Gas Recirculation (EGR) system. The engine is run at a speed of 1600 rpm, and the engine performance and emission characteristics for different fuel blends are noted at 7.5, 10, 12.5, and 15 kW brake power at EGR=0% and 5%. The measured parameters are BSFC, BTE and the emissions concentration of CO, Smoke and NOx at the exhaust. Results are shown in graphs, and the results showed a maximum reduction of 21, 39, and 49% in NOx, CO and Smoke concentrations compared with the engine running at the same BP with conventional Diesel as fuel. When the EGR system is used, and with EGR percentage increases, we observed NOx emissions are reduced while the other emissions increase drastically. The optimized EGR found which can reduce emissions without affecting engine performance was 5%. The graphs comparing the engine performance and emission characteristics for EGR = 0 and 5% when the engine produced 15 kW are made. The study found the best biodiesel blend, reducing emissions without affecting engine performance as D49.2BD49.2DT1.6 and D46.6BD46.6DT1.8E5.