Biodiesel from lemon and lemon grass oil and its effect on engine performance and exhaust emission

摘要

In the present scenario many developing countries are depending on oil producing nations for their fuel resources. Due to demand and scarcity of the fuel, there has been a huge increase in fuel prices. The vehicular population is also continuously increasing and becoming a great menace to peoples. This paper aims to provide an alternate solution for petroleum based fuels. It suggests that biodiesel produced from lemon and lemon grass oil can be used as an alternative fuel. This work investigates the thermal performance of four stroke diesel engine using blends of biodiesel and diesel as a fuel. Performance parameters like brake thermal efficiency, mechanical efficiency and specific fuel consumption were measured at different loads for diesel and various combination of biofuel (L10, L20, and L30). The maximum brake thermal efficiency obtained is about 26.12％for L20 which is slightly higher than that of diesel (24.91％). Engine experimental results showed that exhaust emissions including CO2 and HC were reduced by 6％ and 5％ for L20 mixture of biodiesel whereas CO emission was as same as diesel. However, there was increase in NOxby 26％ to the diesel fuel.