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

Abstract

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

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

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