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Experimental and numerical investigation on a novel gas turbocharging system for diesel engine power recovery at high altitude

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Abstract

Based on the analysis of the plateau performance for a 6 cylinder 8.6 L turbocharged diesel engine, a novel gas turbocharging system (GTS) is proposed to recover the engine power at high altitudes. Besides, a rolling-reflux combustor is designed to meet the structural requirements of GTS as well as to reduce the flow loss. Both the structure of the rolling-reflux combustor and the cycle thermal calculation of the GTS were described in detail in present work. The performance changes and the fuel consumption rate with engine speed at different altitudes of the GTS are compared to the original engine. Results show that when the altitude changes from 3 km to 5 km, the torque and power of the diesel engine with GTS can be recovered to that at sea level. Then, the particle image velocimetry (PIV) test is performed to study the cold flow field at the cylinder head of the rolling-reflux combustor, and the flow conditions are analyzed in detail. Finally, the flow bench is built and the aerodynamic experiment is carried out to verify the effectiveness of GTS.

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Abbreviations

MFR :

Mass flow rate

GTS:

Gas turbocharging system

DPC:

Double pressure ratio compressor

NA:

Naturally aspirated

η :

Efficiency

t-t :

Total to total

Re :

Reynolds number

CCD:

Charge-coupled device

PIV:

Particle image velocimetry

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Acknowledgments

The authors would like to thank the financial support of the Bejing Natural Science Foundation (NO. 3182009) and the Fundamental Research Funds for the Central Universities (No. ‘N182303033’).

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Authors and Affiliations

  1. School of Control Engineering, Northeastern University at Qinhuangdao, Qinhuangdao, 066004, China

    Dengfeng Yang & Li’ang Cao

  2. School of Mechanical Engineering, Beijing Institute of Petrochemical Technology, Beijing, 102617, China

    Yang Liu & Zhilian Zhang

Authors
  1. Dengfeng Yang
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  2. Li’ang Cao
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  3. Yang Liu
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  4. Zhilian Zhang
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Corresponding author

Correspondence to Zhilian Zhang.

Additional information

Recommended by Associate Editor Hanho Song

Dengfeng Yang obtained his Ph.D. degree from Power Machinery and Engineering from Beijing institute of Technology (BIT), and is currently working at Northeastern University at Qinhuangdao, China. His research interests include radial/mixed turbine design and the complex flow in turbomachinery.

Zhilian Zhang obtained her Ph.D. degree from Chemical Process Machinery from Beijing University of Chemical Technology, and is currently working at Beijing institute of Petrochemical Technology at Beijing, China. Her research interests include the aerodynamic design and flow analysis of rotating machinery.

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Yang, D., Cao, L., Liu, Y. et al. Experimental and numerical investigation on a novel gas turbocharging system for diesel engine power recovery at high altitude. J Mech Sci Technol 33, 5061–5072 (2019). https://doi.org/10.1007/s12206-019-0945-2

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  • DOI: https://doi.org/10.1007/s12206-019-0945-2

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