Analysis of Ethanol Blended Biodiesel on VCR Engine

In this present research work, waste cooking oil biodiesel combined with diesel fuel blends were used as alternative fuels for diesel engines. The six different types of blends namely B5, B10, B15, B20, B25 and B30 were prepared. The optimization of production of biodiesel from waste cooking oil from transesterification process was evaluated on varying the various parameters such as reaction time, KOH concentration and molar ratio. An experimental investigation was carried out to evaluate the performance and emission characteristics of a cooking oil biodiesel blends at various compression ratios like 12, 14 and 16 on a compression ignition engine and important fuel properties were determined. The performance parameters analyzed include BP (Brake Power), BSFC (Brake Specific Fuel consumption), BTE (Brake Thermal Efficiency) and exhaust gas concentration including oxides of nitrogen, HC and CO. The calorific value of optimized waste cooking oil biodiesel was lower than diesel fuel. The flash and fire point of waste cooking oil biodiesel were determined to be 154oC and 160oC respectively which are higher than diesel fuel. The bsfc for all blends decreases as the compression ratio increases and at all compression ratios bsfc remains higher for the higher blends as the biodiesel percent increase. The blends of biodiesel with small content in place of petroleum diesel can help in controlling air pollution and easing the pressure on scarce resources without significantly sacrificing engine power and economy.