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预混合理想配比进气充量的燃烧是不会生成碳烟颗粒的。因此,为了满足颗粒排放目标,直接喷射火花点燃汽油机的开发目标是要提供预混合的进气充量来避免或最大限度地减少碳烟颗粒的生成。发动机开发不仅需要有精确的颗粒排放测量仪,而且还需要能在所有相关试验工况下识别缸内颗粒生成源的传感器和测量技术。通过记录火焰辐射信号,以及对这些预混合扩散火焰特征信号的分析,就可以进行这种识别。介绍能在标准发动机和整车试验程序下应用的测量技术和分析方法,以尽量减少发动机瞬态运转时会生成碳烟颗粒的燃烧方式。
Pre-mix The ideal ratio of the amount of intake combustion does not generate soot particles. Therefore, in order to meet the particulate emission goals, the direct injection spark ignition gasoline engine has been developed to provide pre-mixed intake charge to avoid or minimize the generation of soot particles. Engine development requires not only accurate particle emission meters but also sensors and measurement technologies that identify in-cylinder particle generation sources for all relevant test conditions. This identification can be done by recording the flame radiation signals and analyzing the characteristic signals of these pre-mixed diffusion flame. Introduce measurement techniques and analysis methods that can be applied under standard engine and vehicle test procedures to minimize the combustion of soot particles generated during engine transient operation.