Abstract
The experiment of using gasohol containing ethanol 20% and 85% in the conventional passenger cars were conducted in order to study the effects on the engines. Engine performance, fuel consumption and emissions were examined. The emissions were measured according to the TIS.2160-2003 standard. Comparison test between the use of conventional gasoline, E20 and E85 was done. The results show that the engine powers under the use of ethanol fuel are greater. Fuel consumption is 3- 5% and 26-29% higher when using E20 and E85 respectively. THC and CO emissions decrease but NOx change a little bit with the use of E20. However, the overall emissions are under the standard limit. All vehicles were driven on the road for long distance to test the durability when using E20. Performances of engines, fuel consumptions and emissions were not changed significantly. The material compatibility test of fuel system components which contact with fuel E20 and E85 was conducted. Most fuel system components are compatible with E20 but some of them are not compatible with E85.
Keywords: Ethanol, E20, E85, Renewable Energy, Engine