The chemistry of unburned hydrocarbon oxidation in SI engine exhaust was modeled as a function of temperature and concentration of unburned gas for lean and rich mixtures. Detailed chemical kinetic mechanisms were used to model isothermal reactions of unburned fuel/air mixture in an environment of burned gases at atmospheric pressure. Simulations were performed using five pure fuels (methane, ethane, propane, n-butane and toluene) for which chemical kinetic mechanisms and steady state hydrocarbon (HC) emissions data were available. A correlation is seen between reaction rates and HC emissions for different fuels. Calculated relative amounts of intermediate oxidation products are shown to be consistent with experimental measurements.
Chemical Kinetic Modeling of the Oxidation of Unburned Hydrocarbons
Sae Technical Papers
International Fuels & Lubricants Meeting & Exposition ; 1992
1992-10-01
Conference paper
English
Chemical kinetic modeling of the oxidation of unburned hydrocarbons
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