本文对控制柴油机微粒的排放进行了深入的研究，采用了以改进柴油机设计为核心的机内净化措施，并与排气后处理措施相结合。
The core method of internal cleaning was taken by improving the diesel design, combined with exhaust's aftertreatment, to study on the diesel particulate control.
因此真空油泵使用时需要净化干燥等保护装置，以除去进入泵中低沸点溶剂、酸碱性气体和固体微粒。
Therefore, when using the vacuum pump protection devices need cleaning and drying to remove the low boiling point solvent into the pump, acid gases and solid particles.
试验结果表明，微粒后处理系统对柴油机排气微粒具有一定的净化效果，净化率在50% - 75%。
The test result shows that a certain purifying effect on the Diesel exhaust particulate can be obtained from the system with purifying rate of 50 % - 75 %.
应用推荐