Effect of oxygenate additives into gasoline for improved fuel properties

Automotive gasoline and gasoline-oxygenate blends are used in internal combustion spark-ignition engines. Gasoline is a complex mixture of relatively volatile hydrocarbons that vary widely in their physical and chemical properties. The gasoline may be blended, or may be required to be blended, with oxygenates to improve the octane rating, extend the fuel supply, or reduce vehicle exhaust emissions.In this study, the effect of oxygenate additives into gasoline is researched for the improvement of physical and chemical properties of blends. Methanol, ethanol, Methyl Tert Butyl Ether (MTBE), Di-isopropyl ether (DIPE), Tert amyl alcohol (TAA), Tert butyl alcohol (TBA) have been blended into unleaded gasoline with various blended rates of 2.5%, 5%, 7.5%, 10%, 15%, and 20%. Physical and chemical properties of blends were analyzed by the standard American Society fir Testing and Materials (ASTM) methods.Keywords: Oxygenates, Alcohols, MTBE, DIPE, TAA, TBA.