IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v251y2022ics0360544222008210.html
   My bibliography  Save this article

Investigation of an ammonium carbamate–based SCR system for NOx reduction in diesel engines under transient conditions

Author

Listed:
  • Raza, Hassan
  • Woo, Sanghee
  • Kim, Hongsuk

Abstract

The deNOx performance of a selective catalytic reduction (SCR) system using ammonium carbamate (AC) was investigated and compared with that of a urea water solution (UWS). The effects of the NH3/NOx (α) ratio, injection threshold temperature (Tinj), and a zero-dimensional ammonia adsorption-desorption model on NOx conversion efficiency were evaluated. World harmonized transient cycle (WHTC) and non-road transient cycle (NRTC) tests were conducted using a 3.9-L diesel engine over a Cu-zeolite catalyst. The NOx conversion efficiency of AC in the WHTC and NRTC was increased compared with that of UWS during the cold phase by 6.43% and 8.71%, respectively, and during the hot phase by 14.79% and 11.93%, respectively. Gaseous ammonia injection at a low Tinj can explain improved deNOx performance, as increasing Tinj leads to a decrease in NOx conversion efficiency. Increasing the α ratio effectively increases NOx conversion efficiency, but a high α ratio leads to ammonia slip. Ammonia injection using a model-based control increased cold-start deNOx performance. These promising results provide an alternative pathway to controlling NOx emissions from heavy-duty diesel engines.

Suggested Citation

  • Raza, Hassan & Woo, Sanghee & Kim, Hongsuk, 2022. "Investigation of an ammonium carbamate–based SCR system for NOx reduction in diesel engines under transient conditions," Energy, Elsevier, vol. 251(C).
    • Handle: RePEc:eee:energy:v:251:y:2022:i:c:s0360544222008210
    DOI: 10.1016/j.energy.2022.123918
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544222008210
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2022.123918?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    References listed on IDEAS

    as
    1. Kumar, Madan & Tsujimura, Taku & Suzuki, Yasumasa, 2018. "NOx model development and validation with diesel and hydrogen/diesel dual-fuel system on diesel engine," Energy, Elsevier, vol. 145(C), pages 496-506.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Zhao, Weihua & Yan, Junhao & Gao, Suya & Lee, Timothy H. & Li, Xiangrong, 2022. "The combustion and emission characteristics of a common-rail diesel engine fueled with diesel and higher alcohols blends with a high blend ratio," Energy, Elsevier, vol. 261(PB).

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Serrano, J. & Jiménez-Espadafor, F.J. & López, A., 2019. "Analysis of the effect of the hydrogen as main fuel on the performance of a modified compression ignition engine with water injection," Energy, Elsevier, vol. 173(C), pages 911-925.
    2. Zhao, Hao & Dana, Alon G. & Zhang, Zunhua & Green, William H. & Ju, Yiguang, 2018. "Experimental and modeling study of the mutual oxidation of N-pentane and nitrogen dioxide at low and high temperatures in a jet stirred reactor," Energy, Elsevier, vol. 165(PB), pages 727-738.
    3. Quang Trung Nguyen & Minh Duc Le, 2022. "Effects of Compression Ratios on Combustion and Emission Characteristics of SI Engine Fueled with Hydrogen-Enriched Biogas Mixture," Energies, MDPI, vol. 15(16), pages 1-18, August.
    4. T. M. Yunus Khan & Manzoore Elahi M. Soudagar & S. V. Khandal & Syed Javed & Imran Mokashi & Maughal Ahmed Ali Baig & Khadiga Ahmed Ismail & Ashraf Elfasakhany, 2021. "Performance of Common Rail Direct Injection (CRDi) Engine Using Ceiba Pentandra Biodiesel and Hydrogen Fuel Combination," Energies, MDPI, vol. 14(21), pages 1-16, November.
    5. Guo, Qiang & Liu, Jie & Wu, Binyang & Liu, Yize, 2022. "On the optimization of the double-layer combustion chamber with and without EGR of a diesel engine," Energy, Elsevier, vol. 247(C).
    6. Tarafdar, Anirban & Majumder, P. & Deb, Madhujit & Bera, U.K., 2023. "Application of a q-rung orthopair hesitant fuzzy aggregated Type-3 fuzzy logic in the characterization of performance-emission profile of a single cylinder CI-engine operating with hydrogen in dual fu," Energy, Elsevier, vol. 269(C).

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:energy:v:251:y:2022:i:c:s0360544222008210. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/energy .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.