本文系统地介绍了作者多年来对高速、高增压回流扫气二冲程柴油机换气过程的研究结果。其中包括扫气图的测取与分析,50多个方案的气动模型试验,气口合理高度的计算,单缸机验证试验及整机换气压力波图测取等等。计算与各项试验结果基本相符。 This paper systematically introduces the author’s research results on the scavenging process of two-stroke diesel engine with high-speed and high-pressure return scavenging for many years. Including the acquisition and analysis of scavenging map, more than 50 programs of aerodynamic model test, the calculation of a reasonable height of the air port, single-cylinder machine verification test and machine ventilation pressure wave detection and so on. Calculation and test results are basically consistent.