Experimental study of additive added palm biodiesel in a compression ignition engine

In this study, the effect of anti oxidant additives on performance and emissions of a biofuelled engine was investigated experimentally and compared with diesel fuel. For this study four fuel sample including B0 (100% diesel fuel), B100 (100% palm biodiesel), B35 (35% palm biodiesel and 65% diesel) and B35+1% (B35 with 1% additives) was used in a multi cylinder compression ignition engine. Performance and emissions were investigated at various engine speeds of 1500 rpm to 4000 rpm at an interval of 250 rpm and with 50% throttle opening. To evaluate the performance characteristics brake power (BP), brake specific fuel consumption (BSFC) and exhaust temperature were tested where as incase of emissions test nitrogen oxides (NOx), carbon monoxide (CO), total hydrocarbon (THC) and carbon dioxide (CO2) were measured. The results showed that using 1% anti oxidant additive with higher percentages (35%) of palm biodiesel blend gave 2.7% lower brake power but it significantly reduced exhaust emissions including NOx emissions than diesel fuel. Based on this study fuel "B35+1%" (35% biodiesel with 1% additives) was achieved as a promising alternative fuel for compression ignition engine. © Sila Science.