Development of Di-Air - A New Diesel deNOx System by Adsorbed Intermediate Reductants

Event
SAE International Powertrains, Fuels and Lubricants Meeting
Authors Abstract
Content
An unprecedented phenomenon that achieves high NOx conversion was found over an NSR catalyst. This phenomenon occurs when continuous short cycle injections of hydrocarbons (HCs) are supplied at a predetermined concentration in lean conditions. Furthermore, this phenomenon has a wider range of applicability for different catalyst temperatures (up to 800 degrees Celsius) and SVs, and for extending thermal and sulfur durability than a conventional NOx storage and reduction system. This paper analyzes the reaction mechanism and concludes it to be highly active HC-deNOx by intermediates generated from adsorbed NOx over the base catalysts and HCs partially oxidized by oscillated HC injection. Subsequently, a high performance deNOx system named Di-Air (diesel NOx aftertreatment by adsorbed intermediate reductants) was demonstrated that applies this concept to high speed driving cycles.
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DOI
https://doi.org/10.4271/2011-01-2089
Pages
9
Citation
Bisaiji, Y., Yoshida, K., Inoue, M., Umemoto, K. et al., "Development of Di-Air - A New Diesel deNOx System by Adsorbed Intermediate Reductants," SAE Int. J. Fuels Lubr. 5(1):380-388, 2012, https://doi.org/10.4271/2011-01-2089.
Additional Details
Publisher
Published
Aug 30, 2011
Product Code
2011-01-2089
Content Type
Journal Article
Language
English