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Experimental Method for the Determination of Instantaneous Diesel Engine Pollutant Emissions During Transients

[+] Author Affiliations
Nicolas Thouvenel, Xavier Tauzia, Pascal Chesse, Jean-François Hetet

Ecole Centrale de Nantes, Nantes, France

Paper No. ICES2002-466, pp. 207-214; 8 pages
  • ASME 2002 Internal Combustion Engine Division Spring Technical Conference
  • Design, Operation, and Application of Modern Internal Combustion Engines and Associated Systems
  • Rockford, Illinois, USA, April 14–17, 2002
  • Conference Sponsors: Internal Combustion Engine Division
  • ISBN: 0-7918-1688-5
  • Copyright © 2002 by ASME


This paper presents a method to estimate instantaneous diesel engine emissions during transients using analytical means usually adopted for steady state investigations. The initial emphasis is on the inability of the conventional analysis systems to directly provide instantaneous levels of gaseous emissions during transients. In the ensuing section, a signal reconstruction technique used to rebuild instantaneous pollutant emissions at the engine exhaust is described. This reconstruction is based on a transfer function, which is the ratio of known measured and applied pollution signals. As a validation of this technique, the inversion of the transfer function is then applied to measurements obtained during basic tests consisting of steps and ramps. Finally, a method for estimating diesel particulates during transients through a correlation established from the measurements of carbon monoxide and smoke opacity is presented.

Copyright © 2002 by ASME



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