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Deactivation of TWC as a Function of Oil Ash Accumulation - A Parameter Study
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 11, 2005 by SAE International in United States
Annotation ability available
The oil ash accumulation on modern three way catalyst (TWC) as well as its influence on catalyst deactivation is evaluated as a parameter of oil consumption, kind of oil additive compound and additive concentration. The oil ash accumulation is characterized by XRF and SEM/EDX in axial direction and into the washcoat depth of the catalyst. The deposition patterns of Ca, Mg, P and Zn are discussed. The catalytic activity of the vehicle and engine bench aged catalysts is measured by performing model gas tests and vehicle tests, respectively. The influence of oil ash accumulation on the lifetime emission behavior of the vehicle is discussed.
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CitationFranz, J., Schmidt, J., Schoen, C., Harperscheid, M. et al., "Deactivation of TWC as a Function of Oil Ash Accumulation - A Parameter Study," SAE Technical Paper 2005-01-1097, 2005, https://doi.org/10.4271/2005-01-1097.
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