Numerical Modeling of the Dynamic Transport of Multi-Component Exhaust Gases in Oxygen Sensors 2007-01-0931
Today's wide range oxygen sensors are based on the limiting current principle, where an applied voltage induces electrochemical reactions in a ceramic cell. Since the diffusive transport of exhaust gas to the electrodes is limited by a transport barrier, the resulting electric current can be related to the exhaust gas composition. A model is presented which describes the transient transport of gas mixtures from the bulk exhaust gas to the electrodes of an oxygen sensor at variable pressure and composition. The internal structure of the transport barrier was accounted for by geometrical parameters. A variety of numerical results are compared with experimental data.
Citation: Göll, S., Piesche, M., Scheffel, M., Moser, T. et al., "Numerical Modeling of the Dynamic Transport of Multi-Component Exhaust Gases in Oxygen Sensors," SAE Technical Paper 2007-01-0931, 2007, https://doi.org/10.4271/2007-01-0931. Download Citation
Author(s):
Stephan Göll, Manfred Piesche, Marcus Scheffel, Thomas Moser, Sascha Klett
Affiliated:
Institut für Mechanische Verfahrenstechnik, Universität Stuttgart, Robert Bosch GmbH
Pages: 12
Event:
SAE World Congress & Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
SI and CI Engine Cold Start and Transient Emissions and Control-SP-2092, SAE 2007 Transactions Journal of Engines-V116-3
Related Topics:
Gases
Oxygen
Ceramics
Sensors and actuators
Simulation and modeling
Pressure
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