Paper Title:
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 NOx 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.

  Info
Periodical
Chapter
Chapter 4: Frontiers of Energy Engineering and Materials
Edited by
Dongye Sun, Wen-Pei Sung and Ran Chen
Pages
2089-2093
DOI
10.4028/www.scientific.net/AMM.71-78.2089
Citation
Q. Wang, M. X. Zhou, B. Y. Wang, "An Experimental Study for NOx - Emission Reduction with Urea-SCR Technology in Vehicular Diesel Engines", Applied Mechanics and Materials, Vols. 71-78, pp. 2089-2093, 2011
Online since
July 2011
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$32.00
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