Review on Octane Index, a Feasible Performance Indicator of Motor Gasoline

The process of determining the octane number of motor gasoline is expensive and time-consuming, and it necessitates the use of a testing engine, which may not be available in small or out-of-the-way labs. Simple and usable equations for calculating an octane index using gasoline properties that are easily and routinely tested were derived using correlations between the octane number of motor gasoline and its physical and chemical properties. The density, boiling temperatures, characterisation factor, and cyclic chemicals concentration of gasoline are all taken into account. The equation derived from the correlation between the octane index and the characterization factor in particular provides an easy and accurate means of determining the combustion characteristics of most commercially-available gasoline.