An Investigation of the Ignition Delay Character of Different Fuel Components and an Assessment of Various Autoignition Modelling Approaches

摘要: An understanding of the ignition delay behaviour spark fuels, over a wide range temperatures and pressures, was an essential prerequisite for ongoing pursuit to develop fundamentally-based predictive octane model gasoline blends. The characteristics certain fuel compounds such as linear iso-paraffins, olefins, aromatics alcohols were investigated by means chemical kinetic modelling, employing CHEMKIN 3.7 using detailed molecular oxidation mechanisms obtained from literature. complexity these necessitated parallel investigation reduced models in some applications. Reduced also used describe blending selected binary combinations fuels. complex response temperature/pressure domain that predicted analyses simple system three, coupled Arrhenius equations. This simplified expression emulate experimental data fuels combustion bomb apparatus, IQT™, well single cylinder CFR engine under knocking conditions. A combination various approaches has led new insights regarding classes molecules regard their collective resistance towards autoignition. is critical requirement modelling reflected numbers.