This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Comparison of Plasma-Catalyst and Lean NOx Catalyst for Diesel NOx Reduction
ISSN: 0148-7191, e-ISSN: 2688-3627
Published October 16, 2000 by SAE International in United States
Annotation ability available
Projected NOx and fuel costs are compared for a plasma-catalyst system and an active lean NOx catalyst system. Comparisons are based on modeling of FTP cycle performance. The model uses steady state laboratory device characteristics, combined with measured vehicle exhaust data to predict NOx conversion efficiency and fuel economy penalties.
The plasma system uses a proprietary catalyst downstream of a plasma discharge. The active lean NOx catalyst uses a catalyst along with addition of hydrocarbons to the exhaust.
For the plasma catalyst system, NOx conversion is available over a wide temperature range. Increased electrical power improves conversion but degrades vehicle fuel economy; 10 J/L energy deposition costs roughly 3% fuel economy. Improved efficiency is also available with larger catalyst size or increased exhaust hydrocarbon content.
For the active lean NOx system, NOx conversion is available only in a narrow temperature range. Exhaust hydrocarbon levels must also be increased for good NOx conversion.
The plasma catalyst system is projected to have better NOx efficiency, at the expense of a larger fuel economy penalty than the active lean NOx catalyst.
CitationHoard, J., Laing, P., Balmer, M., and Tonkyn, R., "Comparison of Plasma-Catalyst and Lean NOx Catalyst for Diesel NOx Reduction," SAE Technical Paper 2000-01-2895, 2000, https://doi.org/10.4271/2000-01-2895.
SAE 2000 Transactions Journal of Fuels and Lubricants
Number: V109-4; Published: 2001-09-15
Number: V109-4; Published: 2001-09-15
- Adams Karen M. Cavataio John V. Hammerle Robert H. “Lean NOx catalysis for diesel passenger cars: Investigating effects of sulfur dioxide and space velocity” Applied Catalysis B: Environmental 10 157 181 1996
- Peters A. Langer H.-J. Jokl B. Muller W. Klein H. Ostgathe K. “Catalytic NOx Reduction on a Passenger Car Diesel Common Rail Engine” SAE paper 980191 February 1998
- Heimrich Martin J. “Demonstration of Lean NOx Catalytic Converter Technology on a Heavy-Duty Diesel Engine” SAE paper 970755 February 1997
- Plasma Exhaust Aftertreatment SAE publication number 1395, International Fall Fuels & Lubricants Meeting San Francisco, CA October 19-22 1998
- Non-Thermal Plasma for Exhaust Emission Control: NOx, HC, and Particulates SAE publication number 1483, International Fall Fuels & Lubricants Meeting Toronto, Ontario, Canada October 25-28 1999
- Miyoshi Naoto et. al. «Development of New Concept Three-Way Catalyst for Automotive Lean-Burn Engines” SAE paper 950809 1995
- Brogan M.S. et. al. Evaluation of Nox Storage Catalysts as an Effective System for Nox Removal from the Exhaust Gas of Leanburn Gasoline Engines” SAE paper 952490 1995
- Bailey Owen et. al. “Regeneration Strategies for NOx Adsorber Catalysts” SAE paper 972845 1997
- Luders H. Backes R. Huthwohl G. Ketcher D.A. Horrocks R.W. Hurley R.G. Hammerle R.H. “An Urea NOx Catalyst System for Light Duty Diesel Vehicles” SAE paper 952493 October 1995
- U.S. Environmental Protection Agency Code of Federal Regulations, Title 40, Part 86, Appendix I “Urban Dynamometer Schedules”
- Hoard J.W. Balmer M.L. “Analysis of Plasma-Catalysis for Diesel NOx Remediation” SAE paper 982429 October 1998
- Balmer M.L. Tonkyn R.G. Yoon S. Kolwaite A. Barlow S.E. Maupin G. Hoard J.W. “NOx Destruction Behavior of Selected Materials When Combined with a Non-Thermal Plasma” SAE paper 1999-01-3640 October 1999
- Hoard J.W. Worsley L. Follmer W.C. “Electrical Characterization of a Dielectric Barrier Discharge Plasma Device” SAE paper 1999-01-3635 October 1999