Application of the dual Pegasor Particle Sensor to real-time measurement of motor vehicle exhaust PM
Application of the dual Pegasor Particle Sensor to real-time measurement of motor vehicle exhaust PM
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DOI：
10.1016/j.jaerosci.2016.10.005
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发表时间：
2017-01-01
影响因子：
4.5
通讯作者：
Samaras, Zissis
中科院分区：
文献类型：
--
作者：
Amanatidis, Stavros;Maricq, M. Matti;Samaras, Zissis
在这项研究中，我们探索了最近引入的一种排气颗粒检测概念的性能，即双PPS (dPPS)，它可以同时实时测量机动车尾气颗粒的大小、数量和质量。为此，dPPS在两个实验室进行了评估，在美国和欧盟的型式批准周期内，与常规用于PM排放测量的仪器对比，测量柴油和汽油直喷（GDI）排气颗粒物（PM）。分析包括相互关联测试，以验证dPPS配置中不同PPS单元的响应，以及确定最佳操作参数以最小化数据反演误差。实验结果表明，dPPS能够提供废气PM排放的实时信息，其测量结果与参考仪器非常吻合。鉴于其紧凑的尺寸和原始排气采样能力，dPPS是便携式排放测量系统（PEMS）的合适候选人，可以测量颗粒质量和废气排放数量。该概念和相关的操作算法允许改变最低粒度检测阈值，从而使该技术适用于23nm，这是欧盟规定的当前阈值，或者如果需要，可以更低。
In this study we explore the performance of a recently introduced exhaust particle detection concept, the dual PPS (dPPS), to simultaneously measure motor vehicle exhaust particle size, number, and mass in real-time. To this end, the dPPS was evaluated in two laboratories in measuring diesel and gasoline direct injection (GDI) exhaust particulate matter (PM) over the US and EU type approval cycles against instruments regularly used for PM emissions measurements. The analysis included inter-correlation testing to validate responses of different PPS units in a dPPS configuration, as well as determination of the optimal operation parameters to minimize data inversion errors. The experimental results demonstrate that dPPS is capable of providing real-time information on exhaust PM emissions, and that its measurement is in close agreement with reference instruments. Given its compact dimensions and raw exhaust sampling capacity, dPPS is an appropriate candidate as a portable emissions measurement system (PEMS) to measure both particle mass and number exhaust emissions. The concept and the associated operation algorithm allow to change the lowest particle size detection threshold, thus making the technique suitable to 23 nm, which is the current threshold in EU regulations, or a lower one if so desired.