A Probability Density Metric for Automotive Three-way Catalyst Diagnostics.

A statistical classification technique based on the fraction of time the catalyst gain is very close to zero is used as a diagnostic metric for on-board monitoring of an automotive catalyst. Prelimi- nary results indicate that it is possible to per- form very accurate discrimination between cata- lyst operation, even near the on-board diagnostic detection threshold, using this technique. Exper- imental vehicle tests with each of the different catalysts are used as the basis for comparison.

Main Author: Kirschman, Jill S.
Other Authors: Frey, Jesse C., Muske, Kenneth R., Peyton Jones, James C., Makki, Imad H., Uhrich, Michael I.
Language: English
Published: 2008
Online Access: http://ezproxy.villanova.edu/login?url=https://digital.library.villanova.edu/Item/vudl:176343