本SAE航空航天信息报告（AIR）概述了瞬态测量方法，以确定拟安装在民用和军用飞机上的飞机推进发动机或辅助动力装置（APU）地面测试单元上相关压缩机排气污染物标记化合物的发动机生成水平。这些空气集中在润滑油上，这些润滑油可能通过泄漏的发动机密封件或其他来源进入排气。还考虑了摄入的发动机燃烧产物，这些产物必须与机油不同。 这种空气的目的是确定作为污染物典型标志的关键物种，而不是描述所有可能的污染物。还讨论了近似量化这些标记的实时（瞬态）测量方法。为瞬态测量开发的实时方法也可用于地面试验台稳态运行的实时测量。讨论了试验设置和试验程序、环境空气和压缩机排气取样技术，以及每种已识别排气污染物标记化合物的一种或多种具体分析方法。 这种空气不建议达到可接受的水平。

This SAE Aerospace Information Report (AIR) outlines transient measurement methods to determine engine-generated levels of relevant compressor bleed air contaminant marker compounds on a ground level test cell for aircraft propulsion engine or auxiliary power unit (APU) to be fitted on civil and military aircraft. This AIR focuses on lubrication oils that might enter the bleed air through leaking engine seals or other sources. Also considered are ingested engine combustion products, which must be differentiated from oil. The intent of this AIR is to identify key species that are markers typical of contaminants, not to characterize all possible contaminants. Real-time (transient) measurement methods to approximately quantify those markers are also discussed. Real-time methods developed for transient measurement could also be applied for real-time measurements in steady state operations in ground level test beds. Discussions of test setup and test procedures, techniques for sampling ambient air and compressor bleed air, and one or more specific analytical methodologies for each of the identified bleed air contaminant marker compounds are included. This AIR will not recommend levels of acceptability.