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Oxygen Quench Effect on Flame Ionization Detector for Hydrocarbon Emission Measurements
Technical Paper
2004-01-1431
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
While developing one of the first commercialized Super Ultra Low Emission Vehicles, one vehicle manufacturer also improved the method for measuring low level hydrocarbons [1]. This was accomplished by enhancing the Constant Volume Sample System, and correcting hydrocarbon measurements from the Flame Ionization Detector hydrocarbon analyzer for the effect of oxygen quench. Based on the manufacturer's results, it appears that the variation in oxygen content of the calibration gas, span gas, zero gas, and sample gas can affect the accuracy of low level hydrocarbon measurement.
Within the last couple of years, the United States Environmental Protection Agency and the California Air Resources Board approved the Bag Mini Diluter method for emission sampling [2,3]. This method was developed by the American auto industry in cooperation with government agencies within the American Industry/Government Emissions Research Consortium. The method was primarily designed to measure the lowest vehicle emission levels [4]. Due to a constant low dilution ratio, exhaust samples contain a lower oxygen content than the hydrocarbon calibration gases, resulting in underreported hydrocarbons.
This paper describes a method for optimizing the Flame Ionization Detector hydrocarbon analyzer and correcting for oxygen quench effect. For one test vehicle, the oxygen quench effect on Non-Methane Hydrocarbon emission measurements was -8 percent for the Bag Mini Diluter system and -2 percent for the Constant Volume Sample system.
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Authors
- Edward Sun - Engineering Studies Branch, Mobile Source Control Division, California Air Resources Board
- Wayne McMahon - Engineering Studies Branch, Mobile Source Control Division, California Air Resources Board
- David Peterson - Engineering Studies Branch, Mobile Source Control Division, California Air Resources Board
- Jeffrey Wong - Engineering Studies Branch, Mobile Source Control Division, California Air Resources Board
- Kazuya Tsurumi - Horiba Instruments, Inc.
Topic
Citation
Sun, E., McMahon, W., Peterson, D., Wong, J. et al., "Oxygen Quench Effect on Flame Ionization Detector for Hydrocarbon Emission Measurements," SAE Technical Paper 2004-01-1431, 2004, https://doi.org/10.4271/2004-01-1431.Also In
References
- Tayama Akira et al. “A Study of a Gasoline Fueled Near-Zero-Emission Vehicle using an Improved Emission Measurement System,” SAE Paper 982555 1998
- Letter to Manufacturers US EPA December 6 2001
- Manufacturers Advisory Correspondence California Air Resources Board May 14 2002
- Environmental Research Consortium Technical Report “The Bag Mini-Diluter Alternative to CVS Sampling,” May 1 2001
- Akard M. et al. “System and Utility Considerations for Analyzer Calibration and Measurement of Low Concentrations in Automotive Exhaust,” SAE Paper 2003-01-3145
- Sherman M.
- Sun E. et al. “Evaluation of Fluorocarbon Polymer Bag Material for Near Zero Exhaust Emission Measurement,” SAE Paper 2001-01-3535 2001
- Behrendt H. et al. “Studies on Enhanced CVS Technology to Achieve SULEV Certification,” SAE Paper 2002-01-0048