Novel Method to Estimate the Octane Ratings of Ethanol–Gasoline Mixtures Using Base Fuel Properties

Ethanol blending into gasoline yields a wide range of octane rating responses, most frequently synergistic (i.e., greater than expected by linear blending), but also linear or antagonistic. A new approach to modeling ethanol octane blending, applicable for both research octane number (RON) and motor octane number (MON), is proposed, which predicts different ethanol blending responses in base fuels of different compositions and properties. The...