A mechanism study on combustion influence of initial NOx on toluene reference fuels

In order to gain better understanding in the chemical aspect of initial NOx to gasoline during low temperature combustion, a sub-mechanism contain the interaction between iso-octane, n-heptane, toluene and NOx was developed. This mechanism, based on the conclusion of methane, butane and ethylene, was formed with chosen reactions of NOx conversion and interaction between high carbon hydrocarbons. By comparing the experimental data of different iso-octane, n-heptane, toluene mixtures, the mechanism was validated. This mechanism could predict ignition timing, heat release and used for comparative analysis of blending effect between NOx and different fuel mixture. From the results, the way of initial NOx affects different fuels is found that if the major component of mixtures is Toluene, ignition phase will become earlier while initial NOx increase, and if the major component of mixtures is Alkane, the change is gentler. ©, 2015, Huazhong University of Science and Technology. All right reserved.