Optimization of Operating Parameters of C.I. Engine Fuelled with Diesel-Fish Oil Blends at Various Compression Ratios and Injection Timings Based on Taguchi's Concept of Doe for Minimal Emissions

High growth rate of population, technological development, the standard of living and industrialization has led to the intricate situation in the field of energy supply and demand. The sources of conventional fossil fuels are depleting very fast and also have their negative environmental impact. Fish oil extracted from discarded body parts of fish like head, tail, fins, eyes etc. has shown promising results in fixed compression ratio engines. This paper presents the parametric optimization of fish oil biodiesel-diesel blends viz. B1 (15% Fish oil+85% Diesel), B2 (30%Fish oil+70% Diesel), B3 (45% Fish oil +55% Diesel). Together with this compression ratio is varied from 15:1 to 18:1 in step of 1, Injection timing from 200BTDC to 260 BTDC in step of 2, Load 3kg to12kg in step of 3. The experimentation is carried out based on taguchi method in minitab 16. Compression ratio 15:1, injection timing 260 BTDC and load 3kg and 30% fish oil blend were found to be optimal values for minimum emissions of HC, CO, CO2, NOx.