IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v13y2020i4p990-d324015.html
   My bibliography  Save this article

Effect of Injection Strategies in Diesel/NG Direct-Injection Engines on the Combustion Process and Emissions under Low-Load Operating Conditions

Author

Listed:
  • Jinze Li

    (State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China)

  • Longfei Deng

    (State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China)

  • Jianjun Guo

    (State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China)

  • Min Zhang

    (State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China)

  • Zhenyuan Zi

    (State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China)

  • Jie Zhang

    (State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China)

  • Binyang Wu

    (State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China)

Abstract

The direct injection of natural gas (NG), which is an important research direction in the development of NG engines, has the potential to improve thermal efficiency and emissions. When NG engines operate in low-load conditions, combustion efficiency decreases and hydrocarbon (HC) emissions increase due to lean fuel mixtures and slow flame propagation speeds. The effect of two combustion modes (partially premixed compression ignition (PPCI) and high pressure direct injection (HPDI)) on combustion processes was investigated by CFD (Computational Fluid Dynamics), with a focus on different injection strategies. In the PPCI combustion mode, NG was injected early in the compression stroke and premixed with air, and then the pilot diesel was injected to cause ignition near the top dead center. This combustion mode produced a faster heat release rate, but the HC emissions were higher, and the combustion efficiency was lower. In the HPDI combustion mode, the diesel was injected first and ignited, and then the NG was injected into the flame. This combustion mode resulted in higher emissions of NO x and soot, with a diffusion combustion in the cylinder. HC emissions significantly decreased. Compared with PPCI combustion, HPDI had a higher thermal efficiency.

Suggested Citation

  • Jinze Li & Longfei Deng & Jianjun Guo & Min Zhang & Zhenyuan Zi & Jie Zhang & Binyang Wu, 2020. "Effect of Injection Strategies in Diesel/NG Direct-Injection Engines on the Combustion Process and Emissions under Low-Load Operating Conditions," Energies, MDPI, vol. 13(4), pages 1-18, February.
  • Handle: RePEc:gam:jeners:v:13:y:2020:i:4:p:990-:d:324015
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/13/4/990/pdf
    Download Restriction: no

    File URL: https://www.mdpi.com/1996-1073/13/4/990/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Jingrui Li & Jietuo Wang & Teng Liu & Jingjin Dong & Bo Liu & Chaohui Wu & Ying Ye & Hu Wang & Haifeng Liu, 2019. "An Investigation of the Influence of Gas Injection Rate Shape on High-Pressure Direct-Injection Natural Gas Marine Engines," Energies, MDPI, vol. 12(13), pages 1-18, July.
    2. Girma T. Chala & Abd Rashid Abd Aziz & Ftwi Y. Hagos, 2018. "Natural Gas Engine Technologies: Challenges and Energy Sustainability Issue," Energies, MDPI, vol. 11(11), pages 1-44, October.
    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. Yang, Kailin & Wang, Zhongshu & Zhang, Kechao & Wang, Dan & Xie, Fangxi & Xu, Yun & Yang, Kaiqiang, 2023. "Impact of natural gas injection timing on the combustion and emissions performance of a dual-direct-injection diesel/natural gas engine," Energy, Elsevier, vol. 270(C).

    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. Jingrui Li & Jietuo Wang & Teng Liu & Jingjin Dong & Bo Liu & Chaohui Wu & Ying Ye & Hu Wang & Haifeng Liu, 2019. "An Investigation of the Influence of Gas Injection Rate Shape on High-Pressure Direct-Injection Natural Gas Marine Engines," Energies, MDPI, vol. 12(13), pages 1-18, July.
    2. Xi, Haoran & Fu, Jianqin & Zhou, Feng & Yu, Juan & Liu, Jingping & Meng, Zhongwei, 2023. "Experimental and numerical studies of thermal power conversion and energy flow under high-compression ratios of a liquid methane engine (LME)," Energy, Elsevier, vol. 284(C).
    3. Hall, Carrie & Kassa, Mateos, 2021. "Advances in combustion control for natural gas–diesel dual fuel compression ignition engines in automotive applications: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 148(C).
    4. Yang, Xiyu & Wang, Xiaoyan & Dong, Quan & Ni, Zuo & Song, Jingdong & Zhou, Tanqing, 2022. "Experimental study on the two-phase fuel transient injection characteristics of the high-pressure natural gas and diesel co-direct injection engine," Energy, Elsevier, vol. 243(C).
    5. Stettler, Marc E.J. & Woo, Mino & Ainalis, Daniel & Achurra-Gonzalez, Pablo & Speirs, Jamie & Cooper, Jasmin & Lim, Dong-Ha & Brandon, Nigel & Hawkes, Adam, 2023. "Review of Well-to-Wheel lifecycle emissions of liquefied natural gas heavy goods vehicles," Applied Energy, Elsevier, vol. 333(C).
    6. Kanakaraj Aruchamy & Athinarayanan Balasankar & Subramaniyan Ramasundaram & Tae Hwan Oh, 2023. "Recent Design and Synthesis Strategies for High-Performance Supercapacitors Utilizing ZnCo 2 O 4 -Based Electrode Materials," Energies, MDPI, vol. 16(15), pages 1-36, July.
    7. Pei, Zhongwen & Liu, Kaimin & Luo, Wusheng & Yang, Jing & Li, Yangtao, 2023. "Experimental study on the effect of aftertreatment system on the energy flow pattern and emission reduction of a natural gas engine under world harmonized transient cycle," Energy, Elsevier, vol. 263(PB).
    8. Peng Zhang & Yunfei Huang & Ying Wu, 2018. "Springback Coefficient Research of API X60 Pipe with Dent Defect," Energies, MDPI, vol. 11(11), pages 1-17, November.
    9. Charles Kagiri & Lijun Zhang & Xiaohua Xia, 2019. "A Hierarchical Optimisation of a Compressed Natural Gas Station for Energy and Fuelling Efficiency under a Demand Response Program," Energies, MDPI, vol. 12(11), pages 1-24, June.
    10. Ivan Smajla & Daria Karasalihović Sedlar & Branko Drljača & Lucija Jukić, 2019. "Fuel Switch to LNG in Heavy Truck Traffic," Energies, MDPI, vol. 12(3), pages 1-19, February.
    11. Zhang, Jinrui & Meerman, Hans & Benders, René & Faaij, André, 2021. "Techno-economic and life cycle greenhouse gas emissions assessment of liquefied natural gas supply chain in China," Energy, Elsevier, vol. 224(C).
    12. Tianbo Wang & Lanchun Zhang & Li Li & Jiahui Wu & Hongchen Wang, 2022. "Numerical Comparative Study on the In-Cylinder Mixing Performance of Port Fuel Injection and Direct Injection Gas-Fueled Engine," Energies, MDPI, vol. 15(14), pages 1-15, July.
    13. P. A. Harari & N. R. Banapurmath & V. S. Yaliwal & T. M. Yunus Khan & Irfan Anjum Badruddin & Sarfaraz Kamangar & Teuku Meurah Indra Mahlia, 2021. "Effect of Injection Timing and Injection Duration of Manifold Injected Fuels in Reactivity Controlled Compression Ignition Engine Operated with Renewable Fuels," Energies, MDPI, vol. 14(15), pages 1-19, July.

    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:gam:jeners:v:13:y:2020:i:4:p:990-:d:324015. 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: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    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.