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Model-based OBD for Three-Way Catalyst Systems
Technical Paper
2004-01-0639
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In this paper, we review previous approaches to oxygen-related OBD strategies and then discuss the use of a new model-based approach together with a distribution-free statistical testing strategy for fault detection. The method is illustrated using experimental pre- and post-catalyst data for which a simplified catalyst-plus-sensor model has been developed. By monitoring the distribution of prediction errors between the ‘healthy’ model output, and the actual catalyst response even small levels of oxygen storage degradation can be detected with a high degree of confidence.
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Authors
Topic
Citation
Peyton Jones, J. and Muske, K., "Model-based OBD for Three-Way Catalyst Systems," SAE Technical Paper 2004-01-0639, 2004, https://doi.org/10.4271/2004-01-0639.Also In
References
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