నైరూప్య

Experimental Investigation of Fish oil Bio diesel with an additive 1, 4 dioxane in a Thermal Barrier Ceramic (TBC) Coated DI diesel engine

S. Savariraj, T. Ganapathy, C. G. Saravanan

The experimental investigation was conducted to evaluate the effect of adding oxygenated additive to fish oil biodiesel (FOBD) blends on a thermal barrier coated DI diesel engine on performance, emission and combustion characteristics. The test fuels are diesel, FOBD of different blending with diesel of 25%,50%, 75% and 100 % and FOBD with 10% V/V additive of 1, 4 dioxane with different blending with diesel of 25 %, 50% , 75% and 100%. Experiment was done in four stages namely, only diesel, diesel with FOBD, diesel with FOBD with additive (FOBD+A) and diesel with FOBD in a Thermal Barrier Ceramic (TBC) coated engine (FOBD+PC). Comparisons were done with different blends namely of 25 %, 50%, 75% and 100%. Maximum Brake Thermal Efficiency (BTE) attains for operating the engine on biodiesel with additive. Coating does not give any effect on BTE. Smoke density for FOBD+A gives less smoke than others for all load and all blends except 100% blend. Smoke density is higher for coated engine than uncoated engine. NOx emission is considerably reduced for TBC coated engine for all blends when compared to FOBD, FOBD+A and diesel. The HC emission is almost same for all blends up to 80% load. The steep increase in HC emission noticed above 80% load. Additive and coating does not give positive effect on HC emission. The peak cylinder pressures of the fish-oil biodiesel and its blends are lower than that of the diesel due to higher brake specific fuel consumption of fish-oil biodiesels. The occurrence of peak cylinder pressures of the fish-oil biodiesels is little earlier than that of diesel