Many commercial fuels, including gasoline and diesel, are multicomponent hydrocarbons. During the fuel vaporization process, the volatile components evaporate first, which dominate the region near the nozzle exit. The lately evaporated vapor with high penetration has high molecular weight. Thus, ignition and combustion of multicomponent fuels are not only influenced by distribution of fuel vapor mass fraction, but also by distribution of the components. This paper presents a spark ignition and combustion model with consideration of such multicomponent effects for GDI engines. Ignition kernel growth due to flame front propagation is considered in the model to eliminate the sensitivity of the numerical mesh size on the results.
Multicomponent Fuel Spark Ignition and Combustion Models
Sae Technical Papers
SAE International Fall Fuels & Lubricants Meeting & Exhibition ; 2001
24.09.2001
Aufsatz (Konferenz)
Englisch
Multicomponent fuel spark ignition and combustion models
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