Abstract
Abstract
The detailed chemistry approach make it possible to study both the effects of convection of intermediate products and the mechanism of their oxidation reactions, which are generally considered to affect both the timing and locations of knocks. The gasoline as a fuel, however, is a complex mixture of a large number of hydrocarbon fuels. Among many studies, the Primary Reference Fuels (PRF) mechanism simplified by utilizing iso-octane and n-heptane has been applied to the auto-ignition model as the model fuel of gasoline. The PRF mechanism, however, does not account for the composition of aromatics, olefins and naphthenes contained in real gasoline, thus the ignition process of real gasoline may not be fully reproduced. Regarding this point, Golovichev et al. proposed the gasoline surrogate mechanism be used, which considers toluene as the representative of aromatics and cyclohexane as that of naphthenes. In the present study, a numerical simulation was carried out to investigate the ignition delay time of the gasoline surrogate mechanism. Calculation results were compared with the shock tube experiment conducted by Gauthier et al. It was confirmed that the gasoline surrogate mechanism could essentially reproduce the results from the gasoline ignition delay experiment.