尿素过滤模块过滤效率的测定

[中文适用范围]： 本文件规定了与 AUS 32/柴油机尾气处理液 (DEF) 过滤器去除悬浮物的测试方法相关的要求。 这适用于乘用车和商用车专用的尿素过滤器。 该方法适用于流量从 3 l/h 到 30 l/h 的过滤器，具体取决于应用（乘用车默认为 5 l/h，商用车默认为 25 l/h）。 如果能够满足验证要求，该方法可用于其他流速。 [外文原描述]： This document specifies requirements relating to the testing method for AUS 32/diesel exhaust fluid (DEF) filters for the removal of suspended matter. This applies to urea filters dedicated to passenger vehicles as well as to commercial vehicles. This method applies to filters with flow rates from 3 l/h to 30 l/h depending on the application (by default 5 l/h for passenger vehicles and 25 l/h for commercial vehicles). This method can be used for other flow rates, provided the validation requirement can be met.