Air Addition Effect on Exhaust Gas K15 Engine using Bioethanol Fuel

Bioethanol is an alternative fuel for sugarcane extract fermentation which can also be used in internal combustion engines. The content of the calorific value of bioethanol is very low when compared to gasoline, so in its application to internal combustion motors, namely the time required for bioethanol fuel injection must be made longer, by reducing the amount of air naturally resulting in the mixture becoming rich. The electric supercharger functions as an addition to combustion air so that the mixture becomes ideal for combustion. Tests carried out on a K15 engine with a compression ratio of 12.5. Variation of electric supercharger voltage changes from 6 to 12 volts in 2 volt increments at engine speed 2000 to 8000 rotations per minute with an interval of 1000 rotations per minute. Experimental results of air addition effect on exhaust gas K15 engine using bioethanol fuel, get the value of CO, CO2 and HC emissions respectively by 3.96%, 7.26% and 21.36%.