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Evaluation of an UV-Analyzer for the Simultaneous NO and NO2 Vehicle Emission Measurement
Technical Paper
2004-01-1830
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
For the measurement of NO and NO2 the CLD-analyzer (chemiluminescense detector) has been used for more than twenty-five years. The disadvantage of the CLD is that NO can be measured only. To obtain total NOX (NO+NO2) the exhaust gas sample has to flow through a catalytic converter, which reduces NO2 to NO. The converter has a efficiency between 90 and 100%. For precise NO and NO2 values it is an advantage to analyze NO and NO2 directly. This paper describes a new UV NOX-analyzer for the simultaneous measurement of NO and NO2. Two different configurations, for high and low concentrations, eg. CVS-bag analysis are presented. The performance of the analyzers is documented in comparison to the UV-RAS analyzer with converter for NOX [1] and the conventional CLD-analyzer. The benefits of the new analyzer compared to analyzers equipped with a converter are given in detailed test results.
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Citation
Heller, B., Lach, G., Baronick, J., Fabinski, W. et al., "Evaluation of an UV-Analyzer for the Simultaneous NO and NO2 Vehicle Emission Measurement," SAE Technical Paper 2004-01-1830, 2004, https://doi.org/10.4271/2004-01-1830.Also In
References
- Baronick J.D. Fabinski W. Gruber D. Evaluation of an UV Analyzer for NOx Vehicle Emission Measurement SAE 2001-01-0213
- Environmental Protection Agency Code of federal regulations: ยง86.123-78 Oxides of nitrogen analyzer calibration
- Steinfeld J.I. Molecules and Radiation MIT Press London 1989
- Baronick J.D. Heller B. Lach G. Modal Measurement of Raw Exhaust Volume and Mass Emissions by SESAM SAE 980047