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Time-Resolved Measurements of Emission Transients By Mass Spectrometry
Technical Paper
2000-01-2952
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
High-speed diagnostics capable of accurately resolving emission transients are required to provide the most detailed understanding and optimization of active exhaust-emissions-treatment processes, such as NOX adsorbers. A portable, mass-spectrometry-based instrument with high temporal resolution, linear response and broad dynamic range is described. This instrument provides transient-concentration measurement capability for many relevant exhaust species including total NOX. In applications for evaluation of NOX-adsorber systems using heavy-duty diesel engines, the instrument revealed relevant emission transients not previously resolved with conventional analyzers. Specifically, the instrument resolved transient emissions associated with the competition between desorption and reduction rates. The temporal resolution of the instruments is sufficient to resolve kinetic rates of the NOX-adsorber system.
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Authors
- William P. Partridge - Oak Ridge National Laboratory
- John M. E. Storey - Oak Ridge National Laboratory
- Samuel A. Lewis - Oak Ridge National Laboratory
- Robert W. Smithwick - Oak Ridge Y-12 Plant
- Gerald L. DeVault - Oak Ridge Y-12 Plant
- Michael J. Cunningham - Cummins Engine Co.
- Neal W. Currier - Cummins Engine Co.
- Thomas M. Yonushonis - Cummins Engine Co.
Citation
Partridge, W., Storey, J., Lewis, S., Smithwick, R. et al., "Time-Resolved Measurements of Emission Transients By Mass Spectrometry," SAE Technical Paper 2000-01-2952, 2000, https://doi.org/10.4271/2000-01-2952.Also In
References
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