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Investigation of ammonia homogenization and NOx reduction quantity by remodeling urea injector shapes in heavy-duty diesel engines

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  • Khristamto Aditya Wardana, Muhammad
  • Lim, Ocktaeck

Abstract

Gaseous NOx emission is very hazardous for human health and heavy-duty diesel engines contribute 40% of these global highway emissions. Among technologies for reducing emissions, DPF and SCR are most common, and are used in many automotive industries. The honeycomb-shaped catalyst and ammonia gas utilized in these methods can reduce NOx emissions by more than 90%. However, improvement of NOx emission reduction emission is needed. This study investigates two model injectors to optimize spray distribution for improve the NOx conversion quality in the diesel engine, especially a heavy-duty diesel engine, because these engines produce a huge amount of NOx concentration compared to another engines. These investigations also identified the amount of ammonia gas on the catalyst surface by utilizing 19 gas sensors. Comparison between the experiment and simulation shows the ammonia and NOx quantities from the two injector models and elucidates the temperature results for vaporization and saturation quantity, ammonia homogenization distribution, and NOx conversion in the system.

Suggested Citation

  • Khristamto Aditya Wardana, Muhammad & Lim, Ocktaeck, 2022. "Investigation of ammonia homogenization and NOx reduction quantity by remodeling urea injector shapes in heavy-duty diesel engines," Applied Energy, Elsevier, vol. 323(C).
    • Handle: RePEc:eee:appene:v:323:y:2022:i:c:s0306261922008959
    DOI: 10.1016/j.apenergy.2022.119586
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    References listed on IDEAS

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    1. Varna, Achinta & Spiteri, Alexander C. & Wright, Yuri M. & Dimopoulos Eggenschwiler, Panayotis & Boulouchos, Konstantinos, 2015. "Experimental and numerical assessment of impingement and mixing of urea–water sprays for nitric oxide reduction in diesel exhaust," Applied Energy, Elsevier, vol. 157(C), pages 824-837.
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    Cited by:

    1. Wontak Choi & Seunggi Choi & Sangkyung Na & Dongmin Shin & Hyomin Jeong & Yonmo Sung, 2023. "Numerical Study on Compact Design in Marine Urea-SCR Systems for Small Ship Applications," Energies, MDPI, vol. 17(1), pages 1-16, December.
    2. Xiao, Guolin & Gao, Xiaori & Lu, Wei & Liu, Xiaodong & Asghar, Aamer Bilal & Jiang, Liu & Jing, Wenlin, 2023. "A physically based air proportioning methodology for optimized combustion in gas-fired boilers considering both heat release and NOx emissions," Applied Energy, Elsevier, vol. 350(C).
    3. Hu, Wenshuo & Zhang, Yu & Wang, Xiaoxiang & Wu, Weihong & Song, Hao & Yang, Yang & Liu, Shaojun & Zheng, Chenghang & Gao, Xiang, 2023. "Mechanistic assessment of NO oxidative activation on tungsten-promoted ceria catalysts and its consequence for low-temperature NH3-SCR," Applied Energy, Elsevier, vol. 330(PA).

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