Vol. 7, Issue 4 (2019)
Performance and emission characteristics of CI engine using biodiesel blend
Author(s): Gaadhe SK and Mehta TD
Abstract: This study is motivated by the fact that the vegetable oils are being considered as the fuel of the future for the internal combustion engines, especially the compression ignition engines which are working with diesel as fuel. The vegetable oils are characterized by different set of properties than diesel and hence cannot be used as such in the existing engines. Different approaches for using the vegetable oils in CI engines as fuel are either to modify the oils to match with that of diesel or to modify the engines to run successfully with these oils. Transesterification is one of the common methods to bring the properties of these oils within acceptable limits. Still, the performance loss is seen with biodiesel with standard design of the engine. The investigation was to check the feasibility of Jatropha curcas L. as an alternate to diesel in terms of engine performance and emission characteristics.
The engine performance and emission characteristics were measured during the short-term test using the bio diesel blends 0, 10 and 20 per cent with diesel at full load. It was observed that brake power of B10 and B20 was 4.16 and 9.4 per cent lower than diesel. The volumetric efficiency measured in percentage was 82.11, 81.36 and 82.50 for B10, B20 and diesel respectively. Both blends had shown 1.65 and 4.40 per cent more specific fuel consumption than diesel. Indicated power was reduced by 2.13 and 3.11 per cent for B10 and B20 respectively than diesel. Brake thermal efficiency of B10 and B20 were 2.91 and 6.84 per cent less than diesel. It was observed that mechanical efficiency of B10 and B20 was 0.23 and 0.24 per cent higher than diesel. The brake mean effective pressure (BMEP) and indicated mean effective pressure (IMEP) measured in bar. BMEP was 19.55, 19.46 and 19.71 bar for B10, B20 and diesel respectively. While IMEP was observed 0.30 per cent for B10 and 0.80 per cent for B20, lower than diesel. Exhaust gas temperature with B10 and B20 were higher than diesel. Nitric oxide was observed for diesel, B10 and B20 were 123.22, 130.74 and 134.70 ppm respectively. Carbon dioxide concentration was reduced by 5.28 and 6.48 per cent for B10 and B20 respectively than diesel. Carbon monoxide concentration of B10 as 0.082 per cent and B20 as 0.080 per cent were observed as compared to 0.10 per cent of diesel.
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How to cite this article:
Gaadhe SK, Mehta TD. Performance and emission characteristics of CI engine using biodiesel blend. Int J Chem Stud 2019;7(4):1910-1916.
