This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Reduction of Exhaust Emission from a Stoichiometric Engine Using Non-Thermal Plasma Generated by a Corona Discharge Device
Technical Paper
1999-01-3636
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
A corona discharge device (CDD) used in conjunction with automotive stoichiometric catalysts has been shown to be effective in reducing exhaust tailpipe emissions and catalytic converter light-off temperatures. The CDD used here is a low power, low cost corona discharge device mounted ahead of the catalytic converter in the exhaust stream. Creation of radicals and other oxidizing species in the exhaust by the non-thermal plasma is shown to significantly improve catalyst conversion efficiencies for HC, CO and NOx. Burner flow data shows improvement in steady-state conversion efficiencies as well as improved catalyst light-off performance. Engine-dynamometer and vehicle data on spark ignition engines using production type (stoichiometric) control also shows improved performance with aged catalysts, and various levels of fuel sulfur. The reversibility of sulfur poisoning was also observed. With the CDD, catalysts are shown to recover performance more fully and at lower temperatures after fuel sulfur levels are decreased.
Recommended Content
Authors
Citation
Caren, R., Ekchian, J., Roth, G., Cowart, J. et al., "Reduction of Exhaust Emission from a Stoichiometric Engine Using Non-Thermal Plasma Generated by a Corona Discharge Device," SAE Technical Paper 1999-01-3636, 1999, https://doi.org/10.4271/1999-01-3636.Also In
Non-Thermal Plasma for Exhaust Emission Control: Nox, Hc, and Particulates
Number: SP-1483; Published: 1999-10-25
Number: SP-1483; Published: 1999-10-25
References
- Sztenderowicz, M. L. Bandy, W. J. Most, W. J. Jetter, S. Sprik, T. L. Doherty, H. Eng, K. D. “Effects of Fuel Sulfur Level on Emissions from TLEVs” SAE# 952561 1995
- Summers, J.C. et. al. “Fuel Sulfur Effects on Automotive Catalyst Performance” SAE# 920558 1992
- Plasma Exhaust Aftertreatment 1998
- Whealton, J. H. et. al. “Non-Thermal Plasma Exhaust Aftertreatment: A Fast Rise Time Concept” SAE# 971718 1997
- Krishtopa, L. G. Krasnoperov, L. N. “NOx destruction in Air and Nitrogen by Dielectric Barrier Corona Discharge” SAE# 982510 1998
- Mutaf-Yardimci, O. et. al. “Plasma-Catalytic Treatment of Organic Compounds in Atmospheric Pressure Non-Equilibrium Discharges” SAE# 982427 1998
- McLarnon, C. R. Penetrante, B. M. “Effect of Gas Composition on the NOx Conversion Chemistry in Plasma” SAE# 982433 1998
- Hammer, T. Borer, S. “Plasma Enhanced Selective Catalytic Reduction of NOx for Diesel Cars” SAE# 982428 1998
- Penetrante, B. M. Brusasco, R. M. Merritt, B. T. Pitz, W. J. Vogtlin, G. E. et. al. “Plasma-Assisted Catalytic Reduction of NOx” SAE# 982508 1998
- Hoard, J. Balmer, M. L. “Analysis of Plasma-Catalysis for Diesel NOx Remediation” SAE# 982429 1998
- Fanick, E.R. Bykowski, B.B. “Simultaneous Reduction of Diesel Particulate and NOx Using a Plasma” SAE# 942070 1994
- Lepperhoff, G. et. al. “Lean-Combustion Spark-Ignition Engine Exhaust Aftertreatment Using Non-Thermal Plasma” SAE# 982515 1998
- Hepburn J. S. Dobson D. A. Hubbard C. P. Otto K. “The Pulse Flame Combustor Revisited” SAE # 962118 1996