本文件规定了清洁度评估程序，用于评估高压汽油直接燃油喷射系统组成部件清洁侧的碎屑量。这些碎片的存在可能会导致系统的运行性能降低。 虽然其他国际标准（如ISO 16232）与道路车辆油路中使用的不同类型部件的清洁度有关，但本文件重点介绍了适用于汽油直接燃油喷射系统部件的特殊程序。

This document specifies cleanliness assessment procedures for evaluating the amount of debris present on the clean side of the constituent parts of high-pressure gasoline direct fuel injection systems. The presence of such debris could lead to a reduction in the system's operational performance. While other International Standards (e.g. ISO 16232) relate to the cleanliness of different types of components used in road vehicle fluid circuits, this document focuses on the special procedures applied for the components of gasoline direct fuel injection systems.