The effect of peanut oil methyl ester on the performance and emissions of a diesel engine with a pump injection fuel system

In the present study, biodiesel fuel was produced from peanut oil through transesterification. The biodiesel obtained was used for preparing 2% biodiesel - 98% eurodiesel (B2), 5% biodiesel - 95% eurodiesel (B5), 7% biodiesel - 93% eurodiesel (B7), 100% eurodiesel (E0) and 100% biodiesel (B100) fuel blends. These fuels were used in a four-cycle, three-cylinder diesel engine with a pump injection fuel system and the changes in the engine performance and exhaust emissions were examined. The results of the experiments showed that engine torque decreased at a rate of 4%, engine power decreased at a rate of 2% and increases were observed in specific fuel consumption with the use of biodiesel. CO and CO2 values decreased 40 % and increases were observed in HC, O-2 and NOx values. The results of the present study showed that biodiesel fuel produced from peanut oil can be used in diesel engines without performing any modifications on the engine.