Influence of metallic based fuel additives on performance and exhaust emissions of diesel engine

In this experimental study, influence of the metallic-based additives on fuel consumption and exhaust emissions of diesel engine were investigated. The metallic-based additives were produced by synthesizing of resin acid (abietic acid) with MnO2 or MgO. These additives were doped into diesel fuel at the rate of 8 μmol/l and 16 μmol/l for preparing test fuels. Both additives improved the properties of diesel fuel such as viscosity, flash point, cloud point and pour point. The fuels with and without additives were tested in a direct injection diesel engine at full load condition. Maximum reduction of specific fuel consumption was recorded as 4.16%. CO emission and smoke opacity decreased by 16.35% and by 29.82%, respectively. NOx emission was measured higher and CO2 emission was not changed considerably with the metallic-based additives.