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Nitrous Oxide Formation Over Three-Way Catalyst
ISSN: 0148-7191, e-ISSN: 2688-3627
Published March 01, 1994 by SAE International in United States
Annotation ability available
The formation of Nitrous Oxide (N2O) over an aged three way catalyst was analysed in a laboratory reactor for a variety of simulated Otto engine exhaust gas conditions. Nitrous Oxide formation was further analysed during FTP75 dynamometer test with a car. The car was equipped with either an aged catalyst or a fresh one. A fast response diode laser system was modified to enable detection of Nitrous Oxide and Carbon Monoxide simultaneously.
From laboratory data the kinetics of Nitrous Oxide formation were evaluated with mathematical simulations and a mechanism was suggested. The results were compared to data from vehicle tests and the results were discussed in the light of the laboratory study. Two general trends were confirmed, i) N2O formation increases at slightly lean conditions: ii) catalysts with a low degree of deterioration gave lower N2O emissions, iii) the extent of N2O formation goes though a maximum with respect to dissociation rate of NO.
- Ingemar Gottberg - Volvo Car Corp.
- Åke Rosén - Volvo Car Corp.
- Edward Jobson - Volvo Technological Development
- Gudmund Smedler - Volvo Technological Development
- Peter Malmberg - Volvo Technological Development
- Hans Bernler - Volvo Technological Development
- Ove Hjortsberg - Volvo Technological Development
CitationJobson, E., Smedler, G., Malmberg, P., Bernler, H. et al., "Nitrous Oxide Formation Over Three-Way Catalyst," SAE Technical Paper 940926, 1994, https://doi.org/10.4271/940926.
SAE 1994 Transactions: Journal of Fuels and Lubricants
Number: V103-4; Published: 1995-09-01
Number: V103-4; Published: 1995-09-01
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