不同检测工况下PN快速检测适应性研究

Adaptability Study of PN Rapid Detection under Different Test Cycle

摘要: 基于国内外典型的PN检测工况的调研研究，分别在台架实验室和年检站场景下，对比PN快速检测设备与基准设备在不同工况的适应性，发现PN快速检测设备与PEMS设备的检测结果在CWTVC工况、实际路谱工况、CHTC工况以及自由加速法下具有良好的跟随性和一致性，在稳态工况和加载减速法工况下，数据一致性变差。且PN快速检测设备在车速较大的工况下以及PN结果值在10³#/cm³数量级时，精度会变差。

Abstract: Based on research into typical PN test cycle both domestically and internationally, comparative studies were conducted in both bench laboratory and annual inspection station settings to evaluate the adaptability of rapid PN detection equipment versus reference equipment under various test cycle. Findings indicate that rapid PN detection equipment demonstrates good tracking and consistency with PEMS equipment results under CWTVC, PEMS, CHTC, and free acceleration test conditions. However, data consistency deteriorates under steady-state and lugdown test cycle. Furthermore, the accuracy of rapid PN detection equipment deteriorates under high-speed conditions and when PN results reach the 10³ particles/cm³ order of magnitude.