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Prediction of turbocharged diesel engine performance equipped with an electric supercharger using 1D simulation

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  • Baek, Seungju
  • Woo, Seungchul
  • Kim, Youngkun
  • Lee, Kihyung

Abstract

The electric supercharger has the advantages of reducing turbo lag and improving low-speed torque of turbocharged engine. The steady-state model using 1D simulation was performed to analyze the effect of the supercharger on the increase of BMEP and the combustion phenomena. Also, transient simulation using a mean value engine model (MVEM) was performed to analyze the improvement of engine response and fuel economy. The differences of engine performance were analyzed according to three locations (Layout A, B, and C) of the supercharger and the air-fuel ratio under controlled and uncontrolled conditions. The BMEPs increased 140.3%, 65.6%, and 17.3%, based on the maximum BMEP of the engine under the air-fuel ratio controlled condition in 1000 rpm, 1250 rpm, and 1500 rpm respectively. The validity of the BMEP analysis can be verified through the results of the combustion pressure; the results seem reasonable in this respect. The volumetric efficiency, maximum combustion temperature, and intake mass flow rate were compared to analyze the cause of volumetric efficiency change by using the supercharger and air-fuel ratio control. In addition, the total fuel consumption decreased by 18 g from 574 g to 556 g owing to the effect of the supercharger in the NEDC simulation.

Suggested Citation

  • Baek, Seungju & Woo, Seungchul & Kim, Youngkun & Lee, Kihyung, 2019. "Prediction of turbocharged diesel engine performance equipped with an electric supercharger using 1D simulation," Energy, Elsevier, vol. 185(C), pages 213-228.
    • Handle: RePEc:eee:energy:v:185:y:2019:i:c:p:213-228
    DOI: 10.1016/j.energy.2019.07.060
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    References listed on IDEAS

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    1. Park, Youngsoo & Bae, Choongsik, 2014. "Experimental study on the effects of high/low pressure EGR proportion in a passenger car diesel engine," Applied Energy, Elsevier, vol. 133(C), pages 308-316.
    2. Zamboni, Giorgio & Moggia, Simone & Capobianco, Massimo, 2016. "Hybrid EGR and turbocharging systems control for low NOX and fuel consumption in an automotive diesel engine," Applied Energy, Elsevier, vol. 165(C), pages 839-848.
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    Cited by:

    1. Ma, Zetai & Xie, Wenping & Xiang, Hanchun & Zhang, Kun & Yang, Mingyang & Deng, Kangyao, 2023. "Thermodynamic analysis of power recovery of marine diesel engine under high exhaust backpressure by additional electrically driven compressor," Energy, Elsevier, vol. 266(C).
    2. Tae-Woo Lee & Do-Kwan Hong, 2021. "Electrical and Mechanical Characteristics of a High-Speed Motor for Electric Turbochargers in Relation to Eccentricity," Energies, MDPI, vol. 14(11), pages 1-14, June.
    3. Baek, Seungju & Lee, Hyeonjik & Lee, Kihyung, 2021. "Fuel efficiency and exhaust characteristics of turbocharged diesel engine equipped with an electric supercharger," Energy, Elsevier, vol. 214(C).

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