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Theoretical and experimental study on performance improvement of diesel engines at different altitudes by adaptive regulation method of the two-stage turbocharging system

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  • Lu, Kangbo
  • Shi, Lei
  • Zhang, Huiyan
  • Chen, Ziqiang
  • Deng, Kangyao

Abstract

The regulation of the two-stage turbocharging system according to the operation of the diesel engine is key to maximizing its potential for power recovery of an engine at high altitudes. This paper targets air intake recovery of diesel engines at different altitudes, the effects of diesel engine operating conditions, in-cylinder combustion, mechanical efficiency, exhaust temperature, turbocharging system operating parameters, and altitudes on the demand characteristics of the equivalent turbine area (ETA) were analyzed by a thermodynamic model, and a multifactor coupled prediction model for the ETA was established, which can predict the regulation of the ETA at different altitudes and operation conditions based on plain and a small amount of plateau data. To improve the accuracy of the model, the error source of the model was analyzed, and the neural network was adapted to predict major errors. Results indicate that the prediction model had high accuracy and the maximum predicted error of ETA is less than 3%. The control strategy obtained by prediction model can improve air supply and efficiency of turbocharging system, the power and economy of the diesel engine also improved at different altitudes.

Suggested Citation

  • 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).
    • Handle: RePEc:eee:energy:v:281:y:2023:i:c:s0360544223016857
    DOI: 10.1016/j.energy.2023.128291
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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. José Ramón Serrano & Pedro Piqueras & Ali Abbad & Roberto Tabet & Stefan Bender & Javier Gómez, 2019. "Impact on Reduction of Pollutant Emissions from Passenger Cars when Replacing Euro 4 with Euro 6d Diesel Engines Considering the Altitude Influence," Energies, MDPI, vol. 12(7), pages 1-24, April.
    3. 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).
    4. 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.
    5. 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).
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