Assessment of engine characteristics of compression ignition engine fuelled with Polanga oil and camphor oil blend

This paper analyses the engine characteristics of Compression Ignition engine fueled with three blends of Polanga oil and camphor oil. The three blends of fuel were identified using the volume ratio as C70P30 (70% of camphor oil with 30% of Polanga oil), C50P50 (50% of camphor oil with 50% of Polanga oil, C30P70 (30% of camphor oil with 70% of Polanga oil) and tested in the four-stroke engine. The results showed higher thermal efficiency, exergy efficiency, and lower brake-specific energy consumptions for C70P30 than C50P50, C30P70 and were closer to diesel. A lower amount of HC and smoke emissions was found for the C70P30 than the C50P50, C30P70, which was closer to the values procured for diesel. The CO emission was found to be lower for C70P30 than all the other tested fuels. Among the tested fuels, the C70P30 supports better combustions which result in higher CO2 and NO emissions. The combustion results show a higher heat release rate and higher peak pressure for the C70P30 than diesel, C50P50, and C30P70. The mean gas temperature, cumulative heat release rate, rate of pressure rise, and heat release rate were found to be higher for C70P30 than the other tested fuels. The cyclic variation was found to be higher for C70P30 but closer to diesel. From an overall perspective, the C70P30 has good engine characteristics than C50P50 and C30P70.