A Simplified Model for the Dynamics of a Three-Way Catalytic Converter
Date Published: 2000-03-06
Paper Number:2000-01-0652
DOI: 10.4271/2000-01-0652
Citation:
Peyton Jones, J., Roberts, J., Bernard, P., and Jackson, R., "A Simplified Model for the Dynamics of a Three-Way Catalytic Converter," SAE Technical Paper 2000-01-0652, 2000, doi:10.4271/2000-01-0652.
The transient response of a catalytic converter to fluctuations in exhaust gas composition has a significant impact on tailpipe emissions. Advanced emission control strategies therefore need to incorporate a model for such behavior, which must also be sufficiently simple for practical implementation in-vehicle. To this end, a variety of semi-empirical models have been developed, including most recently a number of oxygen “storage-dominated” models. In this paper a new storage-dominated model is developed, which includes for the first time the effects of space velocity. The parameters of model may be estimated using the invariant embedding method.
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