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Experiment investigation on the performance and regulation rule of two-stage turbocharged diesel engine for various altitudes operation

Author

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  • Zhang, Huiyan
  • Shi, Lei
  • Deng, Kangyao
  • Liu, Sheng
  • Yang, Zhenhuan

Abstract

To satisfy intake demand under high-altitude condition, two-stage turbocharging system is matched for diesel engine. However, it is necessary to regulate turbocharging system at low altitude due to decline of overall system efficiency. Moreover, regulation rule of turbocharging system, in terms of regulation ability and overall efficiency, which is critical to engine performance and unclear for various altitudes operation so that regulation strategy of turbocharging system depends on numerous calibration. In this paper, regulation rules at various altitudes are investigated by experiments. Test result indicates regulation ability increases as altitudes rises up and provides less excess air coefficient with constant regulation area. Whereas, overall efficiency presents disparate tends at different altitude. Output torque and fuel consumption continue to deteriorate as the bypass valve opens at high altitude condition, while can be improved below 2000 m with reasonable regulation area due to greater overall efficiency. The effect of altitude on regulation area boundary and scope are acquired. Finally, optimal regulation strategy at various altitudes is proposed. Experiment results manifest the maximal increment of overall system efficiency achieves 7.3% and leads to fuel consumption reduction of 13.9 g/kW h under 2200r/min and 0 m condition, compared to fixed turbocharging system.

Suggested Citation

  • 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).
    • Handle: RePEc:eee:energy:v:192:y:2020:i:c:s0360544219323485
    DOI: 10.1016/j.energy.2019.116653
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    References listed on IDEAS

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    1. Zhao, Rongchao & Zhuge, Weilin & Zhang, Yangjun & Yin, Yong & Zhao, Yanting & Chen, Zhen, 2016. "Parametric study of a turbocompound diesel engine based on an analytical model," Energy, Elsevier, vol. 115(P1), pages 435-445.
    2. 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.
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    Cited by:

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    5. Zhang, Zhongjie & Peng, Qikai & Liu, Riulin & Dong, Surong & Zhou, Guangmeng & Liu, Zengyong & Zhao, Xumin & Yang, Chunhao & Wang, Zengquan & Xia, Xu, 2024. "A matching method for Twin-VGT systems under varying expansion ratios at high altitudes," Energy, Elsevier, vol. 289(C).
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    8. Leng, Ling & Qiu, Hongjian & Li, Xiannan & Zhong, Jie & Shi, Lei & Deng, Kangyao, 2022. "Effects on the transient energy distribution of turbocharging mode switching for marine diesel engines," Energy, Elsevier, vol. 249(C).
    9. Xu, Zheng & Ji, Fenzhu & Ding, Shuiting & Zhao, Yunhai & Zhang, Xiangbo & Zhou, Yu & Zhang, Qi & Du, Farong, 2020. "High-altitude performance and improvement methods of poppet valves 2-stroke aircraft diesel engine," Applied Energy, Elsevier, vol. 276(C).
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    11. 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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