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OSC Modelling of 3-Way Automotive Catalysts to Understand the Effect of Latent OSC on Dynamic OSC Performance
Technical Paper
2022-01-0574
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
A three-way automotive catalyst's ability to store oxygen is still a crucial performance metric for modern day catalyst applications. With more stringent emissions legalisation, the oxygen storage capacity (OSC) within a catalyst can assist with converting different harmful exhaust gases such as CO, THC and NOx under transient operating conditions. Additionally, OSC is currently the only onboard catalyst performance metric recorded during a vehicle's useful life. Catalyst performance is correlated to this OSC measurement. OSC in three-way automotive catalysts can be split into two main OSC types. "Latent" OSC deep within the washcoat and "dynamic" OSC on the surface of the catalyst washcoat. Dynamic OSC is more commonly applied in the evaluation of useful OSC of the catalyst during practical operation.
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Citation
Mc Grane, L., Douglas, R., Elliott, M., Irwin, K. et al., "OSC Modelling of 3-Way Automotive Catalysts to Understand the Effect of Latent OSC on Dynamic OSC Performance," SAE Technical Paper 2022-01-0574, 2022, https://doi.org/10.4271/2022-01-0574.Also In
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