NOxReduction in the Exhaust of Mobile Heavy-Duty Diesel Engines by Urea-SCR
Koebel, M.; Elsener, M.; Kröcher, O.; Schär, Ch.; Röthlisberger, Roger
2004

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Abstract

A DeNO x demonstration system for a diesel engine used in construction machineries and mobile cranes was setup. In preliminary experiments various extruded and coated SCR catalysts were evaluated with and without oxidizing pre-catalyst. The data from stationary tests with two selected catalysts were used to establish various model-based control algorithms for the optimum dosage of urea in the ESC and ETC. A NO x conversion of >93% at <10 ppm average ammonia slip could be achieved at a converter-to-swept volume ratio of <2.0.

Details

Title
NOxReduction in the Exhaust of Mobile Heavy-Duty Diesel Engines by Urea-SCR
Author(s)
Koebel, M. (Paul Scherrer Institute, Villigen, Switzerland)
Elsener, M. (Paul Scherrer Institute, Villigen, Switzerland)
Kröcher, O. (Paul Scherrer Institute, Villigen, Switzerland)
Schär, Ch. (EPFZ, Zurich, Switzerland)
Röthlisberger, Roger (EPFZ, Zurich, Switzerland)
Date
2004-07
Published in
Topics in Catalysis
Volume
2004, vol. 30, pp. 43–48
Pagination
6 p.
DOI
https://doi.org/10.1023/B:TOCA.0000029726.38961.2b
ISSN
1022-5528
Keywords
selective catalytic reduction ; SCR ; urea ; diesel ; exhaust ; vanadia ; catalyst
Article Type
scientifique
Faculty
Ingénierie et Architecture
School
HEIG-VD
Institute
iE - Institut des Energies
Note
RÖTHLISBERGER, Roger est chercheur à la HES-SO, HEIG-VD, depuis 2011.
Cette publication a été rédigée par un membre de l’ancien institut IGT - Institut de Génie Thermique.
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