This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Some Problems in the Improvement of Measurement of Transient Emissions
ISSN: 0148-7191, e-ISSN: 2688-3627
Published October 01, 1994 by SAE International in United States
Annotation ability available
A numerical technique, aimed to the reconstruction of the analog output of an analyzer during continuous exhaust gas analysis, is presented. To this purpose the system composed by sample line and analyzer is described as a discrete Linear Time Invariant system with Finite Impulse Response. This technique has been tested on the reconstruction of the continuous emission measurements of diluted exhaust, obtained during a driving cycle acted on a chassis dynamometer. A comparison with the results obtained with CVS bag analysis has been made. The air/fuel ratio during the test cycle has been evaluated and compared with the signal of an oxygen sensor. An attempt to evaluate the emission indices in the transients has been also made, comparing the results of reconstructed and non reconstructed signals.
|Special Publication||Emissions Measurement and Testing 2004|
|Journal Article||An Assessment of Emissions from Light-Duty Vehicles using PEMS and Chassis Dynamometer Testing|
|Technical Paper||Particulate Emissions of Gasoline Vehicles and Influence of the Sampling Procedure|
CitationDe Petris, C., Diana, S., Giglio, V., and Police, G., "Some Problems in the Improvement of Measurement of Transient Emissions," SAE Technical Paper 941949, 1994, https://doi.org/10.4271/941949.
- McCLURE, B.T. “Characterization of the Transient Response of a Diesel Exhaust-Gas Measurement System” SAE Paper 881320
- BEAUMONT, A.J. NOBLE, A.D. PILLEY, A.D. “Signal Reconstruction Techniques for Improved Measurement of Transient Emissions” SAE Paper 900233
- OPPENHEIM, A.V WILLSKY, A.S. YOUNG, I.T. “Signals and Systems” 1983 100 108 109 352 356 Prentice Hall Inc.
- SAE Handbook 1991 3