本文件定义了标准化和可重复的试验程序，使用内燃机评估窜油气溶胶，并通过规定发动机窜气取样程序和发动机分数效率试验（在稳态运行的开式和闭式曲轴箱通风系统中）来定义气溶胶分离器和过滤装置。由于取样要求，存在瞬态流动条件时的测量效率不在范围内。 本文件不评估分离器寿命。 设备是否符合法规不在本文件范围内。

This document defines standardized and repeatable test procedures by using internal combustion engines for the evaluation of blowby oil aerosol, and aerosol separators and filtering devices by specifying the engine blowby sampling procedure and engine fractional efficiency test in both open and closed crankcase ventilation systems running at steady state. Due to sampling requirements, measuring efficiency when there are transient flow conditions is not in scope. Separator life is not evaluated in this document. Conformance of a device to legislation is outside of the scope of this document.