ISO/TR 6409:2023 道路车辆 ISO 5011：2020的技术变化分析

标准编号：ISO/TR 6409:2023

中文名称：道路车辆 ISO 5011：2020的技术变化分析

英文名称：Road vehicles — Analysis of technical changes of ISO 5011:2020

发布日期：2023-04

标准范围

本文件分析了ISO 5011:2020变更对以下方面的影响:—？预滤器效率；—？消除两个次要元件测试（塌陷和阻塞）；—？对推荐的ISO粉尘注射器的修订（表？1）；—？绝对过滤器称重法的验证；和—？列入附件？H，“穿透灵敏度”。这些变化完善了预滤器效率计算，消除了很少使用的冗长或昂贵的测试，进一步阐明了除尘喷射器的使用、绝对材料的验证以及效率测量的精度。

This document analyses the impact of changes to ISO 5011:2020 as regards to the following:

—    precleaner efficiency;

—    elimination of two secondary element tests (collapse and blocking);

—    revisions to the recommended ISO dust injector (Table 1);

—    validation of the absolute filter weighing method; and

—    inclusion of Annex H, "Penetration sensitivity".

These changes refine the precleaner efficiency calculation, eliminate seldom used tests, which were lengthy or costly, further clarify dust injector use, the validation of the absolute material, and the precision of the efficiency measurement.

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