The effects of biodiesel obtained from waste olive oil on diesel engine performance and exhaust emissions

In this thesis, the biodiesel obtained from the waste olive oil by transesterification method has been mixed with a 30% of diesel fuel as volume and this mixture has been tested with a single cylinder direct injection diesel engine and the combustion, engine performance and exhaust emission values have been compared with diesel fuel. The test motor has been operated at a constant speed of 2200 rpm, but the test has been carried out at different engine loads such as 3.25 Nm, 7.5 Nm, 11.25 Nm, 18.75 Nm. According to the experimental results, the thermal efficiency of biodiesel is 1% to 5% lower than diesel. The rate of CO at 18.75 Nm is lower than that of diesel with 37.5% at biodiesel. The CO2 ratio at 11.25 Nm is 41% higher than the diesel fuel. The NOX ratio at 18.75 Nm is 9.5% higher than diesel fuel. Soot emissions decreased by 37.5% compared to diesel.