至今,对二冲程发动机扫气模型的研究表明,只有一个参量或参量为零的模型的研究结果与试验结果不符。本文推荐一种含有二个参量的模型。这种模型是在本森模型的基础上加上一个所谓废气死区发展而成的。这种模型可以包括所有的试验曲线,而且它能够把各种几何形状的气口同两个不同的扫气质量参数结合起来。这样就可建立一张图谱,把气缸内的新气数量同供气量及气口的几何形状联系起来。文章还列举了一些应用实例。 So far, the research on the scavenging model of two-stroke engine shows that the results of the model with only one parameter or zero are inconsistent with the experimental results. This article recommends a model with two parameters. This model is based on the Benson model plus a so-called exhaust dead zone developed. This model can include all of the test curves, and it combines the geometry of a gas port with two different scavenging quality parameters. This will create a map that relates the amount of fresh gas in the cylinder to the amount of gas supplied and the geometry of the port. The article also lists some application examples.