Heating ethanol-gasoline fuel mixtures to improve performance and reduce exhaust emissions at gasoline engine - A review

Today's dependence on fossil fuels causes shrinkage of fossil fuel in the earth, especially in industrial sector and transportation that is highly depended on petroleum. Industry and transportation agents have changed the use of fossil fuels to alternative fuels such as ethanol fuel. Ethanol continues to be researched and developed to reduce people's dependence on fossil energy. But the use of ethanol fuel cannot be applied a hundred percent in industrial machinery and transportation machinery because the engine that used has a specification for gasoline if we want to use ethanol as an alternate for the main fuel, so it has to changed the components of that engine. Things that could be done at this time is mixes ethanol and gasoline fuel so that the use of gasoline can be minimized without changing the engine components used. This study discusses the effect of a mixture of gasoline and ethanol on a gasoline engine. This study discusses the characteristic of gasoline and ethanol mixture on gasoline engine. This study discusses the characteristic of gasoline and ethanol mixes. This study summarize the result of research in ethanol-gasoline sector since 2008 - 2019 with a special study that covering about the spray characteristic with heating of ethanol-gasoline fuel, octan number and engine performance. The parameters of this study focused on the results of injection spray, torque, power, specific fuel consumption and the effect on emissions products, carbon monoxide, carbon dioxide, hydro carbon and discussed the advantages and disadvantages of a mixture of E0 to E60 gasoline and ethanol fuel in a gasoline engine. It can be seen that the increase of performance and thermal efficiency by adding ethanol fuel mixture to the gasoline engine and reducing exhaust emissions from combustion of ethanol-gasoline. however there is a limit that the ethanol-gasoline mixture if the mixture exceeds the mixture's boundary so it will causes a decrease in engine performance.