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Effects on the transient energy distribution of turbocharging mode switching for marine diesel engines

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  • Leng, Ling
  • Qiu, Hongjian
  • Li, Xiannan
  • Zhong, Jie
  • Shi, Lei
  • Deng, Kangyao

Abstract

Nowadays, the high-power density and high efficiency of marine diesel engines make the requirements of high boost pressure and wide-range intake flow increased. In this study, a two-stage sequential turbocharging (TSST) system is presented as a method for increasing the power density and broadening the efficient working range of diesel engines. Through experimental and analysis methods, the relationships of intake and exhaust energy migration and exhaust energy distribution in the turbocharging mode switching process of the TSST system are investigated, and the optimal control strategy for the switching valves is obtained. The experimental results show that the optimized valve control strategy can achieve a reasonable distribution and efficient utilization of exhaust energy during the switching process. More specifically, the boost pressure error function is only 0.0003 kPa2·s, the engine speed fluctuation amplitude is less than 6 r/min, and the speed transition time is less than 8 s. A smooth switching between the turbocharging modes of the TSST system is achieved, exhaust energy loss is minimized, and the fuel economy and power performance of marine diesel engines over the entire range of operating conditions are effectively improved.

Suggested Citation

  • 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).
    • Handle: RePEc:eee:energy:v:249:y:2022:i:c:s0360544222006491
    DOI: 10.1016/j.energy.2022.123746
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    References listed on IDEAS

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    Cited by:

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    2. Rina Ren & Tiexiong Su & Fukang Ma & Wei Yang & Xin Zhao & Chunlong Xu, 2022. "Research on the Effect of the Outlet Throttle Diameter Deviation on the Pressure Relief Rate of the Injector Control Valve," Energies, MDPI, vol. 16(1), pages 1-19, December.
    3. Leonid Plotnikov, 2023. "Preparation and Analysis of Experimental Findings on the Thermal and Mechanical Characteristics of Pulsating Gas Flows in the Intake System of a Piston Engine for Modelling and Machine Learning," Mathematics, MDPI, vol. 11(8), pages 1-16, April.

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