This research work is aimed to determine the optimum engine parameters that reduce the NOx emissions of the diesel engine when fueled with Fish Oil Methyl Ester (FOME) and its diesel blends. Fuel injection pressure, load on the engine and biodiesel content percentage in the blend were chosen as engine parameters that effects the NOx emission. In this work, Taguchi method was used to investigate the effect of each engine parameter and to identify the right optimum combination of parameters to reduce the NOx emission. Taguchi’s L16 orthogonal array was designed using Design of Experiments (DoE) methodology and experimentation was conducted using Fish oil biodiesel and its diesel blends. Taguchi’s signal-to-noise (S/N) ratio values shown that NOx emission was principally effected by the engine load followed by percentage of biodiesel content in blend and the influence of fuel injection pressure is modest. The optimized emission was established at 220 bar of injection pressure of diesel engine running at 25% of load condition when fueled with B40 Fish oil biodiesel blend.
Keywords: Biodiesel, Optimization, Taguchi Method, NOx, Fish Oil Methyl Ester, Design of Experiments.
Article published in International Journal of Current Engineering and Technology, Vol.6, No.3 (June-2016)