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:柴油机缸内的火焰辐射受诸多因素的影响 ,用理论分析法来确定它是相当困难的 ,由于柴油机缸内火焰辐射特性依赖于缸内的燃烧过程 ,而燃烧过程中的实际热力状态又可用示功图来分析 ,因此借助于火焰辐射与缸内热力参数之间的这种间接关系 ,建立了一种计算柴油机缸内火焰辐射传热的新模型 ,利用该模型对一台直喷柴油机缸内火焰辐射热流量随曲轴转角的变化情况进行了计算 ,将计算结果与实测结果进行了比较 ,表明该模型能较好预测缸内火焰辐射传热量。
: Diesel engine flame radiation within the cylinder by many factors, the theoretical analysis to determine it is quite difficult to determine, because the diesel engine flame emissions depends on the cylinder combustion process, and the actual state of the combustion process can be used Therefore, by means of this indirect relationship between flame radiation and in-cylinder thermal parameters, a new model for calculating the radiative heat transfer in the cylinder of a diesel engine is established. By using this model, a direct injection diesel engine cylinder The results show that the model can better predict the heat transfer of the flame in the cylinder when the heat flux inside the flame is changed with the change of the crank angle.