Realtime Measurements for CO Characterization of In-Use Three-Way-Catalyst Vehicles 850134
The emissions test capability developed at New York's Automotive Emissions Laboratory is described as applied to realtime measurements from in-use three-way-catalyst vehicles. Realtime data from tailpipe emissions analyzers, engine air/fuel ratio analyzer, and vehicle speed/acceleration/power from an electric chassis dynamometer are polled several times per second by a minicomputer data acquisition system. These data are obtained in parallel with conventional CVS bag results. Examples of this capability are demonstrated with test results from two in-use computer-controlled catalyst cars. Results are shown as applied to modal analysis and inter-relationships among collected data.
State air pollution control program areas where this capability can be applied are suggested. Improvements and refinements are discussed in preparation for these tasks.
Citation: Gibbs, R., Whitby, R., Hyde, J., Johnson, R. et al., "Realtime Measurements for CO Characterization of In-Use Three-Way-Catalyst Vehicles," SAE Technical Paper 850134, 1985, https://doi.org/10.4271/850134. Download Citation
Author(s):
R. E. Gibbs, R. A. Whitby, J. D. Hyde, R. E. Johnson, B. J. Hill, P. L. Werner, T. E. Hoffman, P. A. Gabele
Affiliated:
Automotive Emissions Laboratory, New York State Department of Environmental Conservation, Albany, NY, Mobile Sources Research Branch, U. S. Environmental Protection Agency, Research Triangle Park, NC
Pages: 24
Event:
SAE International Congress and Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
SAE 1985 Transactions-V94-85
Related Topics:
Air pollution
Environmental testing
Three-way catalysts
Emissions
Emissions certification
Data acquisition and handling
Catalysts
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