燃油喷射汽油机NO_x排放的计算研究

Calculation of discharge of NO_x from fuel injection gasoline engine

根据扩大的Zeldovich理论建立了计算燃油喷射汽油机NOx排放量的双区模型,介绍了NOx排放量的计算方法,分析了点火提前角、过量空气系数、进气压力、进气温度和气缸壁温度等因素对NOx排放量的影响.研究结果表明,双区模型是一种简便而有效的模型.

According to the extended Zeldovich′s theory, a double zone model is built to calculate discharge of NOx from fuel injection gasoline engine. The computational method of NOx discharge is introduced, and the influence of some factors, such as angle of ignition advance, coefficient of excess air, intake pressure, intake temperature, cylinder wall temperature,etc. on NOx discharge is analysed. The research results show that a double zone model is simple and effective.