| Peer-Reviewed

Research on Effect of EGR and SCR on NOX Emission from a Heavy Duty Diesel Engine

Received: 4 January 2017     Accepted: 23 January 2017     Published: 18 March 2017
Views:       Downloads:
Abstract

Experimental study was conducted on NOX emissions law of a heavy diesel engine with EGR and SCR. Opening of EGR valve (OEV) was adjusted by INCA, and ammonia nitrogen ratio (ANR) was changed by controlling urea injection quantity with control unit DCU of SCR. Under low, medium and high speed and 50%, 75% and 100% load conditions, the effect of EGR (exhaust gas recirculation) and SCR (selective catalytic reduction) on diesel engine NOX emission was studied by test. The results show that when a heavy diesel engine use EGR and SCR, the conversion magnitude and conversion ratio of NO increased significantly, NOX emissions rule is similar to that of NO, and when opening of EGR valve is more than 25%, the effects of OEV increasing on NO and NOX are smaller than the effect of SCR. Only under the conditions of high emissions concentrations of NO2, EGR and SCR significantly reduce NO2 emission concentration.

Published in American Journal of Environmental Protection (Volume 6, Issue 2)
DOI 10.11648/j.ajep.20170602.11
Page(s) 26-30
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2017. Published by Science Publishing Group

Keywords

Diesel Engine, Exhaust Gas Recirculation (EGR), (SCR), Nitrogen Oxides (NOX)

References
[1] SHUAI Shijin, TANG Tao, ZHAO Yanguang. State of the Art and Outlook of Diesel Emission Regulations and After- treatment Technologies [J]. J Automotive Safety and Energy, 2012, 3(3): 200-215.
[2] LI Peng, TAN Piqiang, LOU Diming, et al. Exhaust Aftertreatment Technology for Heavy Duty Diesel Engine Meeting National Emission [J]. Vehicle Engine, 2010(4): 1-5.
[3] JIANG Deming. New Generation Euro-Ⅵ-compatible Heavy-duty Diesel Engine [J]. Vehicle Engine, 2009(4): 1-6.
[4] Claes Westerlund and Björn Westerberg, Scania CV AB. Model Predictive Control of a Combined EGR/SCR HD Diesel Engine [J]. SAE Paper 2010-01-1175, 2010.
[5] Robert Cloudt, Frank Willems. Integrated Emission Management Strategy for Cost-optimal Engine-after Treatment Operation [J]. SAE Paper 2011-01-1310, 2011.
[6] Willems Frank, Mentink Paul, Kupper Frank. Integrated Emission Management for Cost Optimal EGR-SCR Balancing in Diesels [C]. 7th IFAC Symposium on Advances in Automotive Control, AAC 2013.
[7] Steve Charlton. Meeting the US Heavy-Duty EPA 2010 Standards and Providing Increased Value for the Customer [C]. SAE Paper 2010-01-1934, 2010.
[8] RUAN Guanqiang, ZHANG Zhendong. Comparative Experiment Study on Reducing Emissions of Diesel Engine with EGR and SCR [J]. Automobile technology, 2012(10): 55-57.
[9] CHEN Guisheng, HEN Yinggang, ZHENG Zunqing, et al. Performance and Emission Characteristics of HD Diesel Using EGR Under Low-Speed and High-Load Conditions [J]. Transactions of CSICE, 2014, 32(2): 97-103.
[10] SUN Qi. Application of EGR with DOC in Vehicle Diesel Engine to Comply with China IV Emission Regulation [J]. Chinese Internal Combustion Engine Engineering, 2012, 33(2): 6-19.
[11] CHEN Guisheng, WU Wei, SHEN Yinggang, et al. Influence of Different EGR Cycle Modes on Combustion and Emission Characteristics of Heavy-Duty Diesel Engine [J]. Chinese Internal Combustion Engine Engineering, 2014, 35(2): 20-26.
[12] JIANG Lei, GE Yunshan, LI Pu, et al. Study on Emission Characteristics of Urea-SCR Aftertreatment System of Diesel Engine [J]. Chinese Internal Combustion Engine Engineering, 2010, 31(5): 30-35.
[13] GUO Hongsong, JIANG Yan, BAO Junjiang, et al. An Experimental Study on the Performance Matching of Urea-SCR Catalytic Converter with engine [J]. Automotive Engineering, 2011, 33(12): 1039-1042, 1056.
[14] LI Zhongtai, WANG Tao, DUAN Na, et al. Discussion of Main technical route for Euro VI [J]. Heavy-duty Car, 2014(3): 40-41.
Cite This Article
  • APA Style

    Ren Hongjuan, Lou Diming. (2017). Research on Effect of EGR and SCR on NOX Emission from a Heavy Duty Diesel Engine. American Journal of Environmental Protection, 6(2), 26-30. https://doi.org/10.11648/j.ajep.20170602.11

    Copy | Download

    ACS Style

    Ren Hongjuan; Lou Diming. Research on Effect of EGR and SCR on NOX Emission from a Heavy Duty Diesel Engine. Am. J. Environ. Prot. 2017, 6(2), 26-30. doi: 10.11648/j.ajep.20170602.11

    Copy | Download

    AMA Style

    Ren Hongjuan, Lou Diming. Research on Effect of EGR and SCR on NOX Emission from a Heavy Duty Diesel Engine. Am J Environ Prot. 2017;6(2):26-30. doi: 10.11648/j.ajep.20170602.11

    Copy | Download

  • @article{10.11648/j.ajep.20170602.11,
      author = {Ren Hongjuan and Lou Diming},
      title = {Research on Effect of EGR and SCR on NOX Emission from a Heavy Duty Diesel Engine},
      journal = {American Journal of Environmental Protection},
      volume = {6},
      number = {2},
      pages = {26-30},
      doi = {10.11648/j.ajep.20170602.11},
      url = {https://doi.org/10.11648/j.ajep.20170602.11},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajep.20170602.11},
      abstract = {Experimental study was conducted on NOX emissions law of a heavy diesel engine with EGR and SCR. Opening of EGR valve (OEV) was adjusted by INCA, and ammonia nitrogen ratio (ANR) was changed by controlling urea injection quantity with control unit DCU of SCR. Under low, medium and high speed and 50%, 75% and 100% load conditions, the effect of EGR (exhaust gas recirculation) and SCR (selective catalytic reduction) on diesel engine NOX emission was studied by test. The results show that when a heavy diesel engine use EGR and SCR, the conversion magnitude and conversion ratio of NO increased significantly, NOX emissions rule is similar to that of NO, and when opening of EGR valve is more than 25%, the effects of OEV increasing on NO and NOX are smaller than the effect of SCR. Only under the conditions of high emissions concentrations of NO2, EGR and SCR significantly reduce NO2 emission concentration.},
     year = {2017}
    }
    

    Copy | Download

  • TY  - JOUR
    T1  - Research on Effect of EGR and SCR on NOX Emission from a Heavy Duty Diesel Engine
    AU  - Ren Hongjuan
    AU  - Lou Diming
    Y1  - 2017/03/18
    PY  - 2017
    N1  - https://doi.org/10.11648/j.ajep.20170602.11
    DO  - 10.11648/j.ajep.20170602.11
    T2  - American Journal of Environmental Protection
    JF  - American Journal of Environmental Protection
    JO  - American Journal of Environmental Protection
    SP  - 26
    EP  - 30
    PB  - Science Publishing Group
    SN  - 2328-5699
    UR  - https://doi.org/10.11648/j.ajep.20170602.11
    AB  - Experimental study was conducted on NOX emissions law of a heavy diesel engine with EGR and SCR. Opening of EGR valve (OEV) was adjusted by INCA, and ammonia nitrogen ratio (ANR) was changed by controlling urea injection quantity with control unit DCU of SCR. Under low, medium and high speed and 50%, 75% and 100% load conditions, the effect of EGR (exhaust gas recirculation) and SCR (selective catalytic reduction) on diesel engine NOX emission was studied by test. The results show that when a heavy diesel engine use EGR and SCR, the conversion magnitude and conversion ratio of NO increased significantly, NOX emissions rule is similar to that of NO, and when opening of EGR valve is more than 25%, the effects of OEV increasing on NO and NOX are smaller than the effect of SCR. Only under the conditions of high emissions concentrations of NO2, EGR and SCR significantly reduce NO2 emission concentration.
    VL  - 6
    IS  - 2
    ER  - 

    Copy | Download

Author Information
  • College of Automotive Studies, Tongji University, Shanghai, China

  • College of Automotive Studies, Tongji University, Shanghai, China

  • Sections