International Journal of Fluid Machinery and Systems

Korean Society for Fluid machinery (한국유체기계학회)
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Experimental study on the performance of a turbocompound diesel engine with variable geometry turbocharger

  • Yin, Yong (School of Automotive Studies, Tongji University) ;
  • Liu, Zhengbai (School of Automotive Studies, Tongji University) ;
  • Zhuge, Weilin (State Key Laboratory of Automotive Safety and Energy, Tsinghua University) ;
  • Zhao, Rongchao (State Key Laboratory of Automotive Safety and Energy, Tsinghua University) ;
  • Zhao, Yanting (Dongfeng Commercial Vehicle Technical Center) ;
  • Chen, Zhen (Dongfeng Commercial Vehicle Technical Center) ;
  • Mi, Jiao (Dongfeng Commercial Vehicle Technical Center)
  • Received : 2015.10.29
  • Accepted : 2016.02.17
  • Published : 2016.12.31
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Abstract

Turbocompounding is a key technology to satisfy the future requirements of diesel engine's fuel economy and emission reduction. A turbocompound diesel engine was developed based on a conventional 11-Liter heavy-duty diesel engine. The turbocompound system includes a power turbine, which is installed downstream of a Variable Geometry Turbocharger (VGT) turbine. The impacts of the VGT rack position on the turbocompound engine performance were studied. An optimal VGT control strategy was determined. Experimental results show that the turbocompound engine using the optimal VGT control strategy achieves better performance than the original engine under all full load operation conditions. The averaged and maximum reductions of the brake specific fuel consumption (BSFC) are 3% and 8% respectively.

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References

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