A Thermal Analysis of Active-flow Control on Diesel Engine Aftertreatment 2004-01-3020
One-dimensional transient modeling techniques are adapted to analyze the thermal behavior of lean-burn after-treatment systems when active flow control schemes are applied. The active control schemes include parallel alternating flow, partial restricting flow, and periodic flow reversal (FR) that are found to be especially effective to treat engine exhausts that are difficult to cope with conventional passive flow converters. To diesel particulate filters (DPF), lean NOx traps (LNT), and oxidation converters (OC), the combined use of active flow control schemes are identified to be capable of shifting the exhaust gas temperature, flow rate, and oxygen concentration to more favorable windows for the filtration, conversion, and regeneration processes. Comparison analyses are made between active flow control and passive flow control schemes in investigating the influences of gas flow, heat transfer, chemical reaction, oxygen concentration, and converter properties. Some of the simulation results, such as the periodic flow reversal results, are largely in agreement with the previous empirical observation.
Citation: Zheng, M., Reader, G., Wang, D., Zuo, J. et al., "A Thermal Analysis of Active-flow Control on Diesel Engine Aftertreatment," SAE Technical Paper 2004-01-3020, 2004, https://doi.org/10.4271/2004-01-3020. Download Citation
Author(s):
Ming Zheng, Graham T. Reader, Dong Wang, Jun Zuo, Meiping Wang, Edward A. Mirosh, Arie van der Lee, Benlin Liu
Affiliated:
University of Windsor, EcoCing Corporation, University of Alberta
Pages: 14
Event:
2004 Powertrain & Fluid Systems Conference & Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Emissions Measurement and Testing, Advanced Catalysts and Substrates, and Diesel Gaseous Emissions-SP-1899, SAE 2004 Transactions Journal of Fuels and Lubricants-V113-4
Related Topics:
Lean NOx traps
Diesel particulate filters
Diesel / compression ignition engines
Heat transfer
Gases
Oxygen
Chemicals
Corrosion
Lean burn engines
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