本SAE推荐规程规定了一个标准几何泄漏通道，用于设置泄漏阈值，并比较各种泄漏试验技术和试验条件的结果。本规程适用于有可能使规定的燃油或燃油蒸汽持续逸出到大气中的燃油系统组件和部件。根据本标准测试的部件或组件的HC泄漏阈值为零，因为所选泄漏通道（等效通道）会自动堵塞，不会排放可测量的碳氢化合物液体或蒸汽。因此，本标准消除了作为蒸发排放源的泄漏。本规程主要针对压力和非压力燃料系统以及含有液态烃基燃料的部件而制定。

This SAE recommended practice specifies a standard geometry leak channel to set the leak threshold and compare results from a variety of leak test technologies and test conditions. This practice applies to fuel system assemblies and components which have a risk of allowing regulated fuel or fuel vapors to continuously escape to atmosphere. A component or assembly tested to this standard has a zero HC leakage threshold because the selected leak channel (Equivalent Channel) will self-plug and will not emit measurable hydrocarbon liquid or vapors. Therefore this standard eliminates leaks as a source of evaporative emission. This practice was primarily developed for pressurized and non-pressurized fuel systems and components containing liquid hydrocarbon based fuels.