Green technology and performance consequences of an eco-friendly substance on a 4-stroke diesel engine at standard injection timing and compression ratio

This study experimentally focuses on finding the optimum blend ratio for Direct injection (D. I) diesel engine fuelled with mahua oil-diesel and n-butanol-diesel without any modifications in the engine. Test fuels were prepared by choosing 8 different concentrations as B10 (10 % Biodiesel and 90 % Diesel), B20 (20 % Biodiesel and 80 % Diesel), B30 (30 % Biodiesel and 70 % Diesel), B40 (40 % Bio-diesel and 60 % Diesel), BU10 (10 % n-butanol and 90 % Diesel), BU20 (20 % n-butanol and 80 % Diesel), BU30 (30 % n-butanol and 70 % Diesel), BU40 (40 % n-butanol and 60 % Diesel). Experiments were performed at constant speed and variable loads at standard injection timing of 23 Crank angle degree BTDC and standard compression ratio of 16.5: 1 to determine the engine performance indicators and exhaust gas emissions such as carbon monoxide, carbon dioxide, hydrocarbon, soot content and oxides of nitrogen. The optimum blend ratio for mahua biodiesel-diesel blend and n-butanol-diesel blend were determined and compared on eco-friendly and economical basis to gain the suitable substitute fuel. The result showed that Mahua biodiesel blend is eco-friendly and economically apt alternative fuel for diesel.