The impact of bioethanol on two-stroke engine work details and exhaust emission
¹Estonian University of Life Sciences, Institute of Technology, Kreutzwaldi 56, EE51014 Tartu, Estonia
²Czech University of Life Sciences Prague, Faculty of Agrobiology, Food and Natural Resources, Department of Chemistry, Kamycka 129, 16521 Prague 6, Czech Republic
This research is important for expanding the possibilities for using bioethanol as a fuel for internal combustion engines. Small displacement two-stroke engines are widely used as power sources for manual power units. By using bioethanol as a fuel for two-stroke engines, we significantly decrease the risk to human health. The main problems entailed with using bioethanol include achieving the required lubrication properties, more precisely, the poor mixing or immiscibility of ethanol and oil. In the course of the research, a breakthrough was achieved in solving the problem in order to produce a fuel mixture for two-stroke internal combustion engines. Results covered include the effect of the fuel mixture on the functioning surfaces of an engine, but also the composition of the exhaust emissions. The aim of the investigation is to examine the effect of bioethanol fuel on the details and fuel system of a two-stroke engine. Test fuels are gasoline E 95 and bioethanol (96.3%), mixed by two-stroke engine oil. The mixture of bioethanol and oil shows the best results in the test of the friction force. That means wearing is not problematic but the problem is corrosion and CO emission.