An Experimental Study for NOx - Emission Reduction with Urea-SCR Technology in Vehicular Diesel Engines

Qian Wang; Ming Xing Zhou; Bao Yi Wang

doi:10.4028/www.scientific.net/AMM.71-78.2089

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 71-78An Experimental Study for NOx - Emission Reduction...

An Experimental Study for NOx - Emission Reduction with Urea-SCR Technology in Vehicular Diesel Engines

Abstract:

In order to fulfill future emission standards for middle and heavy-duty vehicles like state Ⅳ and Ⅴ, advanced measures on exhaust gas and engine functionality are required. Selective Catalytic Reduction (SCR) technology is the unique technology currently which can improve the emission and reduce fuel consumption simultaneously. Firstly the reductants and its chemical reactions, SCR system configurations and its working principle and urea dosing control strategy are introduced. Then tests are conducted on a diesel engine with SCR system at bench. The results of ESC cycle show that NO_x emission is decreased by more than 67% with the open-loop control strategy. Additionally, the urea and fuel consumption and ammonia leakage have been compared and analyzed respectively, the experiment data indicates that the urea water solution consumption ratio is only 5.7% of fuel for this SCR system, while its average ammonia slip is below 5 ppm.

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Periodical:

Applied Mechanics and Materials (Volumes 71-78)

Pages:

2089-2093

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.71-78.2089

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Online since:

July 2011

Authors:

Qian Wang, Ming Xing Zhou, Bao Yi Wang

Keywords:

Diesel Engine, NH₃, NO_x, Selective Catalytic Reduction (SCR), Urea Spray

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References

[1] M. Koebel, M. Elsener, T. Marti, NOx-reduction in diesel exhaust gas with urea and Selective Catalytic Reduction, Comb. Sci. and Techn. 121 (1996) 85-102.

DOI: 10.1080/00102209608935588

Google Scholar

[2] M. Koebel, M. Elsener, M. Kleemann, Urea-SCR: a promising technique to reduce NOx emission from automotive diesel engines, Catalysis Today. 59 (2000) 335-345.

DOI: 10.1016/s0920-5861(00)00299-6

Google Scholar

[3] H.L. Fang, H.F.M. DaCosta, Urea thermolysis and NOx reduction with and without SCR catalysts, Applied Catalysis B: Environmental 46 (2003) 17-34.

DOI: 10.1016/s0926-3373(03)00177-2

Google Scholar

[4] R. van Helden, R. Verbeek, F. Willems, Optimization of urea SCR deNOx System for HD Diesel Engines. SAE, 2004-01-0154, (2004).

DOI: 10.4271/2004-01-0154

Google Scholar

[5] Koebel, M. Elsener, M. Madia, G: Recent Advantages in the Development of Urea-SCR for Automotive Applications, SAE paper 2001-01-3625.

DOI: 10.4271/2001-01-3625

Google Scholar