Evaluation of Straight Vegetable Oil and Waste Cooking Oil in Compression Ignition Engine

Abstract

The search for sustainable and environmentally friendly energy sources has led to a great deal of research into alternative fuels for diesel engines. In order to reduce greenhouse gas emissions and noise pollution, the study intends to evaluate how well these bio-based fuels can maintain engine performance. DF100 is pure diesel; DF95WCO5 is a blend of 5% waste cooking oil; and DF95SVO5 is a blend of 5% straight vegetable oil are the three fuel mixes employed in the experimental study on a single-cylinder diesel engine. Important exhaust emissions are assessed, including sound levels and carbon monoxide (CO) and carbon dioxide (CO₂). According to the results, adding WCO and SVO to diesel fuel significantly reduces CO and CO₂ emissions; blends like DF95WCO5 and DF95SVO5 show decreases in CO and CO₂ emissions when compared to pure diesel. This drop can be partially attributed to the higher oxygen content in WCO and SVO and their greater combustion efficiency. It is also found that sound emissions from the engine operating on WCO and SVO mixes are either the same as or slightly less than those from pure diesel. The results demonstrate that CO emissions are successfully reduced by DF95SVO5 to 0.18%.