Analysis on Influence of Varying Compression Ratio in Biofuel

In order to reduce the need of petroleum fuels, the prospect of finding the alternative fuel is a primary goal. This work deals with the cause of mustard oil as a possible alternative. The physical and chemical properties of mustard oil are investigated. Using the gas chromatography, the composition of mustard oil is checked. Transesterification process is used for converting the mustard oil into biodiesel. Biodiesel thus formed is converted into bio fuel by the addition of an oxygenated additive (methanol). The current experiment is performed by varying the compression ratio by 16, 17 and 18 using bio fuel which comprises of 80% of mustard oil biodiesel and 20% of methanol in the diesel engine. Emission aspects of bio fuel are investigated. From this experiment it is observed that, by increasing the compression ratio CO and smoke emissions were slightly reduced, whereas HC emission is significantly reduced. However, the emissions of NOx were found to be on higher side.