通过再循环测定从燃料管、软管、配件和燃料管线组件中损耗的烃类的试验规程

[中文适用范围]： 本 SAE 推荐做法旨在通过组件壁渗透以及组装组件界面处的“微泄漏”来确定碳氢化合物流体的损失，同时独立控制温度和压力。这是在再循环系统中实现的，在该系统中，渗透穿过测试样本壁并迁移通过界面的测试燃料元素通过受控的干燥氮气流输送到测量点。该测量点是一个装置，例如含有活性炭的罐或其他收集或积累装置，然后通过重量变化测量碳氢化合物损失或通过一些其他合适的装置进行分析。 [外文原描述]： This SAE Recommended Practice is intended for the determination of the losses of hydrocarbon fluids, by permeation through component walls, as well as through “microleaks” at interfaces of assembled components while controlling temperature and pressure independently of each other. This is achieved in a recirculating system in which elements of a test fuel that permeate through the walls of a test specimen and migrate through the interfaces are transported by a controlled flow of dry nitrogen to a point where they are measured. That measurement point is a device, such as a canister containing activated charcoal or other means of collection or accumulation, where the hydrocarbon losses are then measured by weight change or analyzed by some other suitable means.