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- W29605422 abstract "A theoretical model, including a detailed kinetic mechanism for propane oxidation, is used to examine the ignition of propane-air mixtures under conditions of pressure and temperature encountered in knocking engines. Purely kinetic calculations are used to evaluate relative time scales for the fuel-air ignition process, varying the initial pressure, temperature, and fuel-air equivalence ratio. A one dimensional model is then used to examine the combined effects of flame propagation, homogeneous ignition, and wall heat transfer on the autoignition of these mixtures. For the temperatures and pressures of concern in this study, it is found that the reaction mechanism is controlled by reactions of the hydroperoxyl radical, in contrast with similar mechanisms at higher temperatures and lower pressures. The time scales computed indicate that, in agreement with experimental evidence, propane-air ignition delay times are slightly longer than the relevant residence times in the end gases of a practical engine and that propane-air mixtures will therefore be quite resistant to knock. Extensions of the kinetic model to larger hydrocarbon fuel molecules which are more likely to knock, and to lower temperatures are discussed." @default.
- W29605422 created "2016-06-24" @default.
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- W29605422 date "1983-09-27" @default.
- W29605422 modified "2023-09-24" @default.
- W29605422 title "Chemical kinetics modeling of engine knock: preliminary results" @default.
- W29605422 hasPublicationYear "1983" @default.
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