Aging of zeolite based automotive hydrocarbon traps

Ted Kostek, Matthew Franchek

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

This paper analyzes the aging of zeolite based hydrocarbon traps to guide development of diagnostic algorithms. Previous research has shown the water adsorption ability of zeolite ages along with the hydrocarbon adsorption ability, and this leads to a possible diagnostic algorithm: the water concentration in the exhaust can be measured and related to aging. In the present research, engine experiments demonstrate that temperature measurements are also related to aging. To examine the relationship between temperature-based and moisture-based diagnostic algorithms, a transient, nonlinear heat and mass transfer model of the exhaust during cold-start is developed. Despite some idealizations, the model replicates the qualitative behavior of the exhaust system. A series of parametric studies reveals the sensitivity of the system response to aging and various noise factors. The results of the sensitivity study show good agreement with previous research, and the results demonstrate a tight relationship between transient temperature and transient water concentration. Finally, some comments are made about application to the SULEV standards.

Original languageEnglish
Title of host publicationSAE Technical Papers
DOIs
StatePublished - Dec 1 2007
Event2007 World Congress - Detroit, MI, United States
Duration: Apr 16 2007Apr 19 2007

Other

Other2007 World Congress
CountryUnited States
CityDetroit, MI
Period4/16/074/19/07

ASJC Scopus subject areas

  • Automotive Engineering
  • Safety, Risk, Reliability and Quality
  • Pollution
  • Industrial and Manufacturing Engineering

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