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A Study on Diesel Emission Reduction using a High-frequency Dielectric Barrier Discharge Plasma
Technical Paper
2003-01-1879
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The aim of this study is to develop a plasma-assisted after-treatment system for simultaneous reduction of NOx and PM in diesel exhaust, which is less sensitive to the fuel sulfur. The work presented focuses on development of a high-frequency dielectric barrier discharge reactor for oxidation of NO to NO2 in diesel exhaust and low-temperature oxidation of diesel soot with NO2. The first part of this paper describes the combustion characteristics of carbonaceous matters with pure NO2 and discusses the difference when oxygen is used as oxidation agent. The second part focuses on the development of a high-frequency dielectric barrier plasma reactor and describes the effects of plasma reactor configuration, energy density and gas composition on the NO conversion into NO2, and last part describes the soot oxidation with the plasma gas. The results reveal that NO can be efficiently oxidized into NO2 using the developed plasma reactor. NO2 formation is greatly affected by the energy density, gas composition and temperature. Hydrocarbons show positive effects on NO conversion into NO2 by increasing the conversion rate, lowering the required electrical energy and preventing the formation of byproducts. Diesel soot oxidation experiments reveal that oxidation of soot with NO2 begins at temperature of about 270°C that is 200°C lower than that of O2. This result show that NO2, which is produced by the plasma assisted conversion of NO can be used for continuous regeneration of PM filter at low temperature range, which is usually available in diesel exhaust.
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MOHAMMADI, A., KANEDA, Y., SOGO, T., KIDOGUCHI, Y. et al., "A Study on Diesel Emission Reduction using a High-frequency Dielectric Barrier Discharge Plasma," SAE Technical Paper 2003-01-1879, 2003, https://doi.org/10.4271/2003-01-1879.Also In
References
- Eastwood, P., “Critical topics in exhaust gas after treatment”, Research studies press ltd, 2000.
- Hawker, P. and Myers, N., “Experience with a new particulate technology in Europe”, SAE Paper 970182, 1997.
- Nakatani, K., et al., “Simultaneous PM and NOx reduction system for diesel engines”, SAE Paper 2002-01-0957, 2002.
- MacDonald,J.S. and Simon, G.M., “Development of diesel particulate trap system for heavy-duty diesel engine”, SAE Paper 880006, 1988.
- Ha, K., et al., “Particulate trap technology demonstration at New York city transit authority”, SAE Paper 910331, 1991.
- Ichikawa, Y., Yamada, S. and Yamada, T., “Development of wall-flow type diesel particulate filter system with efficient reverse pulse air regeneration”, SAE Paper 950735, 1995.
- Pattas, K., et al., “Regeneration of DPF at low temperatures with the use of a Cerium based fuel additive”, SAE Paper 960135, 1996.
- Summers, J.C. et al., “Fuel sulfur effects on automotive catalyst performance, SAE Paper 920558, 1992.
- Sztenderowicz, et al., “Effects of fuel sulfur level on emissions from TLEVs”, SAE Paper 952561, 1995.
- Cooper, B.J., et al., “Role of NO in diesel particulate emission control”, SAE Paper 890404, 1989.
- Society of Automotive Engineers, Plasma exhaust after-treatment, special publication SP-1395, 1998.
- Society of Automotive Engineers, Non-thermal plasma for exhaust emission control, NOx, HC and PM, special publication SP-1483, 1999.
- Penetrante, B., et al., Sulfur tolerance of selective partial oxidation of NO to NO2 in plasma, SAE Paper 1999-01-3687, 1999.
- Eliasson, B. and Kogelschatz, U., “Non-equilibrium volume plasma chemical processing”, IEEE Transactions on Plasma Science 19, pp.1065-1077, 1991.
- Kim, Y., et al., “Comparative study of pulsed corona and dielectric barrier discharges using single-streamer modeling and NO decomposition experiment”, the 8th Int. Sympos. on high-pressure, low-temperature plasma chemistry Hakone VIII, pp.1-5, 2002, Estonia.
- Penetrante, B., et al., “Fundamental limits on NOx reduction by plasma”, SAE Paper 971715, 1997.
- Pitetsch, G.J. and Haacke, M., “Some properties of different types of dielectric barrier discharges for ozone production”, Proceeding of the 7th Int. Sympos. on high-pressure, low temperature plasma chemistry Hakone VII, pp.1-5, 2000.
- Jani, M.A., et al., “Low-voltage operation of a plasma reactor for exhaust gas treatment by dielectric barrier discharge”, Review of Scientific instruments, Vol. 69, No. 4, pp. 1847-1849, 1998.
- McLarnon, C.R. and Penetrante, B.M., “Effect of gas composition on the NOx conversion in a plasma”, SAE Paper 982433, 1998.
- McLarnon, C.R. and Penetrante, B.M.,“Effect of Reactor design on the plasma treatment of NOx”, SAE Paper 982434, 1998.
- Rihan, K., et al., “Behavior of unburnt hydrocarbon components under transient operation in diesel engine”, Proceeding of 15th ICE Sympo. (Int.), pp.542-550, 1998, Seoul.
- Penetrante, B.M., “Feasibility of plasma after-treatment for simultaneous control of NOx and Particulates”, SAE Paper 1999-01-3637, 1999.
- Neissen, W., et al., “Influence of ethene on the conversion of NOx in a dielectric barrier discharge”, J. Physics D: Applied physics, vol. 31, issue 5, pp.542-550, 1998.