Effect of three component aviation-turbine fuel, biodiesel and n-butanol blends on performance efficiency and emissions of diesel engine
2021
Mickevicius, T., Vytautas Magnus Univ., Kaunas (Lithuania) | Zunda, A., Vytautas Magnus Univ., Kaunas (Lithuania)
The article presents the test results of a single-cylinder, four-stroke diesel engine operating with jetbiodiesel fuel (J5) blend and its various blends J5Bu5, J5Bu10 and J5Bu15 with n-butanol (Bu). The three biofuel blends were prepared by mixing 95vol% J5/5vol% Bu, 90vol% J5/10% Bu and 85vol% J5/15vol% Bu, respectively. Load characteristics were taken at the engine speed of n = 2000 rpm, which corresponds to maximum torque mode. The air mass and fuel mass consumption along with CO, CO2, NO, NO2, NOX emissions and smoke of the exhaust were measured at engine load gradually increased up to maximum. Engine performance parameters and emissions of the exhaust were analysed and compared for various engine loads and fuel blends used in these experiments. Analysis of the obtained data shows that the engine operated most efficiently with a minimum brake specific fuel consumption, when running with the fuel J5 blend, at over the whole load range. Whereas at low engine mode, the highest fuel consumption was measured for biofuel J5Bu15 blend. The lowest emission of carbon oxide (CO) was measured, when operating with the highest concentration biofuel J5Bu15 blend, at full engine load. Maximum NOx emissions (1817 ppm) were measured for the maximum engine torque mode, when running with fuel J5 blend. The amount of NOx produced from combustion of blend J5Bu15 was 10.6% lower than that measured, when running at the same test conditions with fuel J5 blend. Minimum smoke opacity was also obtained, when fuelling it with fuel blend J5Bu15 at maximum engine torque mode.
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