Characterization of Gasoline, Ethanol, and Methanol Blends (GEM) with Calculation RON Target

Fossil fuels still dominate future energy needs, while oil production has shown a declining trend over the past ten years. One solution to this condition is using new and renewable energy sources. In the transportation sector, one of the most common environmental problems resulting from the combustion of fossil fuels in internal combustion engines is emission. Mixing gasoline with alcohol is based on this problem. This paper calculates the composition of gasoline-ethanol-methanol with target RON 92, 95, and 98 with RON-based 89. The composition of this blend is calculated with linear molar calculation. Blending ethanol and methanol in gasoline also influences their chemical and physical properties. The characteristics, i.e., research octane number (RON) and density of gasoline-ethanol-methanol fuel blends of RON target 92, 95, and 98, are presented. The results of this calculation will be compared with the experiment. RON is one of the critical characteristics of the internal combustion engine's compression ratio and combustion quality. The obtained result revealed that the average difference from the calculation with the experiment on RON is 0.73, and the density is 0.36.