为了满足车用柴油机排气微粒捕捉器安全使用的需要 ,本文提出了一种捕捉器微粒沉积量实时检测技术 ,介绍了微粒测试仪的组成及工作原理 ,并对测试结果具有一定影响的一些因素进行了分析。研究结果表明 ,在检测范围内 ,测试结果基本不受柴油机工况的影响。这一检测技术可以对车用柴油机排气微粒捕捉器微粒沉积量进行实时连续检测 ,具有一定的应用价值。 In order to meet the need of safe use of exhaust particulates catcher for vehicle diesel engines, this paper presents a real-time detection technology of trapping particle deposition amount, introduces the composition and working principle of particle testers, and some factors that have some influence on the test results Analyzed. The results show that the test results are basically unaffected by the diesel engine operating conditions in the detection range. This detection technology can detect the deposition amount of particulates in exhaust particulates of diesel engines in real time, which has certain application value.