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Effects of altitude on the thermal efficiency of a heavy-duty diesel engine

Author

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  • Wang, Xin
  • Ge, Yunshan
  • Yu, Linxiao
  • Feng, Xiangyu

Abstract

In order to investigate the effects of altitude on the brake thermal efficiency of heavy-duty diesel engines, an experimental study on a heavy-duty diesel engine operating at various altitudes was conducted. Tests were conducted in low and moderate load and speed conditions. Brake thermal efficiency at four altitudes, including 0 m, 1600 m, 3300 m and 4500 m, was tested. A mobile engine bench which was specifically designed for mobile engine test was employed. The engine was working at low and moderate speeds and loads during the tests. The results indicated that brake thermal efficiency (with unchanged SOI (Start of Injection) at various altitudes) dropped with the rising of altitude; especially for the low-speed, low-load cases. Additionally, a few reasons to lower brake thermal efficiency at high altitude were analyzed, which indicated that factors including delayed combustion start, lowered factual expansion ratio, decreased specific heat ratio of the air–fuel mixture, aggravated ineffectiveness of turbocharger, deformed fuel spray and enhanced heat transfer, contributed to the deterioration of brake thermal efficiency in high altitude regions.

Suggested Citation

  • Wang, Xin & Ge, Yunshan & Yu, Linxiao & Feng, Xiangyu, 2013. "Effects of altitude on the thermal efficiency of a heavy-duty diesel engine," Energy, Elsevier, vol. 59(C), pages 543-548.
    • Handle: RePEc:eee:energy:v:59:y:2013:i:c:p:543-548
    DOI: 10.1016/j.energy.2013.06.050
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    References listed on IDEAS

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    1. Ceviz, M. Akif & Çavuşoğlu, Bülent & Kaya, Ferhat & Öner, İ. Volkan, 2011. "Determination of cycle number for real in-cylinder pressure cycle analysis in internal combustion engines," Energy, Elsevier, vol. 36(5), pages 2465-2472.
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    Cited by:

    1. Rasa Zalakeviciute & Jesús López-Villada & Yves Rybarczyk, 2018. "Contrasted Effects of Relative Humidity and Precipitation on Urban PM 2.5 Pollution in High Elevation Urban Areas," Sustainability, MDPI, vol. 10(6), pages 1-21, June.
    2. Zhang, Huiyan & Shi, Lei & Deng, Kangyao & Liu, Sheng & Yang, Zhenhuan, 2020. "Experiment investigation on the performance and regulation rule of two-stage turbocharged diesel engine for various altitudes operation," Energy, Elsevier, vol. 192(C).
    3. Liu, Jinlong & Wang, Bosen & Meng, Zhongwei & Liu, Zhentao, 2023. "An examination of performance deterioration indicators of diesel engines on the plateau," Energy, Elsevier, vol. 262(PB).
    4. Reyes García-Contreras & Andrés Agudelo & Arántzazu Gómez & Pablo Fernández-Yáñez & Octavio Armas & Ángel Ramos, 2019. "Thermoelectric Energy Recovery in a Light-Duty Diesel Vehicle under Real-World Driving Conditions at Different Altitudes with Diesel, Biodiesel and GTL Fuels," Energies, MDPI, vol. 12(6), pages 1-18, March.
    5. Lu, Kangbo & Shi, Lei & Zhang, Huiyan & Chen, Ziqiang & Deng, Kangyao, 2023. "Theoretical and experimental study on performance improvement of diesel engines at different altitudes by adaptive regulation method of the two-stage turbocharging system," Energy, Elsevier, vol. 281(C).
    6. Xiangting Wang & Haiqiao Wei & Jiaying Pan & Zhen Hu & Zeyuan Zheng & Mingzhang Pan, 2020. "Analysis of Diesel Knock for High-Altitude Heavy-Duty Engines Using Optical Rapid Compression Machines," Energies, MDPI, vol. 13(12), pages 1-14, June.
    7. Chengguan Wang & Xiaozhi Qi & Tao Wang & Diming Lou & Piqiang Tan & Zhiyuan Hu & Liang Fang & Rong Yang, 2023. "Role of Altitude in Influencing the Spray Combustion Characteristics of a Heavy-Duty Diesel Engine in a Constant Volume Combustion Chamber. Part I: Free Diesel Jet," Energies, MDPI, vol. 16(12), pages 1-25, June.
    8. Zhipeng Li & Qiang Zhang & Fujun Zhang & Hongbo Liang & Yu Zhang, 2023. "Investigation of Effect of Nozzle Numbers on Diesel Engine Performance Operated at Plateau Environment," Sustainability, MDPI, vol. 15(11), pages 1-20, May.
    9. Lu, Kangbo & Qiu, Hongjian & Chen, Ziqiang & Shi, Lei & Deng, Kangyao, 2023. "Environmental adaptability method for improving the cold start performance of the diesel engine based on pilot injection strategy," Energy, Elsevier, vol. 281(C).

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