本文件描述了帮助理解和进行燃油系统部件压降测试的推荐方法、相关设备和测试设置。提供背景信息和建议，以提高测试结果的准确性和可重复性。尽管本文中的方法、设备和建议专门针对燃油系统部件编写，但它们同样适用于使用不可压缩流体在任何设备上进行的压降试验。

This document describes recommended methods, associated equipment, and test setups to assist in understanding and conducting pressure drop tests on fuel system components. Background information and suggestions are provided to improve accuracy and repeatability of test results. Although written specifically for fuel system components, the methods, equipment, and suggestions presented herein apply equally to pressure drop tests conducted on any equipment utilizing incompressible fluids.