Demonstrator for online measurement of combustion gases NO, NO2 and SO2: A compact sensor system for highly resolved detection of hazardous emission gases

2017 Eleventh International Conference on Sensing Technology (ICST) Pub Date : 2017-12-01 DOI:10.1109/ICSENST.2017.8304459

M. Degner, H. Ewald

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Abstract

A cost effective and compact sensor system is described that provides an online measurement of combustion gases. Based on UV-VIS-absorption spectroscopy the most important hazardous emission gases nitrogen oxide (NO), nitrogen dioxide (NO2) and sulfur dioxide (SO2) are measured individually and quasi simultaneous with high temporal resolution. A demonstrator device was set up that utilizes only one measurement chamber so the detection of all gases takes place in the same measurement volume. The demonstrator shows a wide concentration dynamic range of some 1000 ppm and a resolution of below 1 ppm for all three gases. Such a sensor system can be used for online emission monitoring of combustion engines in transportation area as well as in stationary industry application. Especially because of the selective detection of the critical emission gas components NO and NO2 the system can also be used for a well-directed engine and after treatment system control to optimize the catalyzers reactions to efficiently reduce harmful emissions of combustion engines.

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用于燃烧气体NO, NO2和SO2在线测量的演示器:用于高分辨率检测有害排放气体的紧凑型传感器系统

描述了一种具有成本效益和紧凑的传感器系统，它提供了燃烧气体的在线测量。基于紫外可见吸收光谱技术，分别和准同时测量了最重要的有害排放气体氮氧化物(NO)、二氧化氮(NO2)和二氧化硫(SO2)，具有高时间分辨率。建立了一个演示装置，该装置仅利用一个测量室，因此所有气体的检测都发生在相同的测量体积中。演示器显示所有三种气体的宽浓度动态范围约为1000ppm，分辨率低于1ppm。该传感器系统既可用于交通运输领域的内燃机排放在线监测，也可用于固定式工业应用。特别是由于该系统对关键排放气体组分NO和NO2的选择性检测，还可以用于发动机和后处理系统的定向控制，以优化催化剂的反应，有效地减少内燃机的有害排放。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2017 Eleventh International Conference on Sensing Technology (ICST)

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