A Phenomenological Control Oriented Lean NOx Trap Model 2003-01-1164
Lean NOx Trap (LNT) is an aftertreatment device typically used to reduce oxides of nitrogen (NOx) emissions for a lean burn engine. NOx is stored in the LNT during the lean operation of an engine. When the air-fuel ratio becomes rich, the stored NOx is released and catalytically reduced by the reductants such as CO, H2 and HC. Tailpipe NOx emissions can be significantly reduced by properly modulating the lean (storage) and rich (purge) periods. A control-oriented lumped parameter model is presented in this paper. The model captures the key steady state and transient characteristics of an LNT and includes the effects of the important engine operating parameters. The model can be used for system performance evaluation and control strategy development.
Citation: Kim, Y., Sun, J., Kolmanovsky, I., and Koncsol, J., "A Phenomenological Control Oriented Lean NOx Trap Model," SAE Technical Paper 2003-01-1164, 2003, https://doi.org/10.4271/2003-01-1164. Download Citation
Author(s):
Yong-Wha Kim, Jing Sun, Ilya Kolmanovsky, Jeff Koncsol
Affiliated:
Ford Motor Company
Pages: 6
Event:
SAE 2003 World Congress & Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Emission Control and Fuel Economy for Port and Direct Injected SI Engines-PT-91, Lean Engine Nox Control-SP-1759, SAE 2003 Transactions Journal of Fuels and Lubricants-V112-4
Related Topics:
Lean burn engines
Nitrogen oxides
Lean NOx traps
Air / fuel ratio
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