EFFECT OF FUEL INJECTION PRESSURE, TIMING AND COMPRESSION RATIO ON PERFORMANCE AND EMISSION CHARACTERISTICS OF FISH-OIL OPERATED DIESEL ENGINE

Keerthi Kumar N, B Yogesh, Shankar Nag G L

Abstract: The demand of resources and fuels for the technologies development is increasing day by day. As the conventional sources of energy are depleting, various methods had to be developed to meet the demand and also to reduce emissions. Hence, alternative sources of energy and newer combustion technology are needed to develop to meet both acceptable engine performance and emission norms. Biofuels are one among those whose energy is derived from carbon fixation. In this context, Extracted oil from wastes of marine resources has been selected as a source of raw resources for creation of biodiesel, which plays an important role for above said need. In the present work, biodiesel is prepared from fish oil is selected and various performance and emission characteristics namely BSFC, BTE, CO, HC and NOx were compared with commercially available diesel for an compression ratio of 17.1:1 and 20.1:1, different blends of B 20, B 30 with different injection pressure and injection timing of 250, 300 bar and STD (20.50 ) respectively. The BTE has found to be more in biodiesel B 20, B 30 than diesel at CR 17.5 and injection pressure of 250 bar, almost same efficiency has been observed for injection pressure of 300 bar. HC emission from diesel fuel has given more as compare to B 20 for CR17.5 and Injection pressure of 300 bar. CO emissions are also found to be less for B 20 at same injection pressure and compression ratio. Because of high oxygen content in fish oil there is an increase in NOx emission as compare to Diesel fuel. But coming for BSFC, biodiesel shows almost same values as that of conventional diesel for all injection pressure and compression ratio. Finally cost estimation has also been done by considering all the materials required, processing cost and by product cost to produce biodiesel from fish oil and it is observed that, cost of fish oil biodiesel is less which is acceptable and appreciable as compared to conventional diesel.

Keywords: Biodiesel, Fish Oil, Injection Pressure, Compression Ratio and Emissions.

DOI: https://doi.org/10.15623/ijret.2016.0516003