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The influences of ignition modes on the performances for a motorcycle single cylinder gasoline engine at lean burn operation: Looking inside interaction between flame front and turbulence

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Listed:
  • Chen, Yangyang
  • Liu, Aodong
  • Deng, Banglin
  • Xu, Zhenxin
  • Feng, Renhua
  • Fu, Jianqin
  • Liu, Xiaoqiang
  • Zhang, Guoqing
  • Zhou, Lili

Abstract

In this work, the effect of ignition modes on engine performance is discussed in detail. Torque, ECR (energy consumption rate), emissions and knock are investigated by using combining experiment with CFD (computational fluid dynamics). The results are as following: the torque of synchronous twin-spark is more excellent (for example, the torque improves by 2.3% under 60% engine load and 5000 rpm) relative to single-spark or the asynchronous ignition mode of twin-spark; the synchronous twin-spark ignition mode has shorter combustion period and less heat transfer loss, resulting in the lower ECR (under 60% engine load and 5000 rpm, it decreases by 3.7%).; unexpectedly all the emissions of synchronous twin-spark are higher (increased by 12%, 53.1% and 9.4% for HC, CO and NOx, respectively under 60% engine load, 5000 rpm) than those of single-spark. Then, we used CFD to reveal the seemingly contradictory phenomenon. And found that, under synchronous twin-spark mode, due to the specifically interaction form between flame and turbulence, the maximum in-cylinder temperature is higher and it decreases faster. This results in specifically pollutants formation patterns. The investigation provides a deeply understanding of in-cylinder working process under multi-ignition, and gives us a foundation for the optimization of ignition modes.

Suggested Citation

  • Chen, Yangyang & Liu, Aodong & Deng, Banglin & Xu, Zhenxin & Feng, Renhua & Fu, Jianqin & Liu, Xiaoqiang & Zhang, Guoqing & Zhou, Lili, 2019. "The influences of ignition modes on the performances for a motorcycle single cylinder gasoline engine at lean burn operation: Looking inside interaction between flame front and turbulence," Energy, Elsevier, vol. 179(C), pages 528-541.
    • Handle: RePEc:eee:energy:v:179:y:2019:i:c:p:528-541
    DOI: 10.1016/j.energy.2019.05.001
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    References listed on IDEAS

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    1. Rakopoulos, C.D. & Kosmadakis, G.M. & Pariotis, E.G., 2010. "Critical evaluation of current heat transfer models used in CFD in-cylinder engine simulations and establishment of a comprehensive wall-function formulation," Applied Energy, Elsevier, vol. 87(5), pages 1612-1630, May.
    2. Muslim, Mohd Taufiq & Selamat, Hazlina & Alimin, Ahmad Jais & Mohd Rohi, Noorfaizah & Hushim, Mohd Faisal, 2014. "A review on retrofit fuel injection technology for small carburetted motorcycle engines towards lower fuel consumption and cleaner exhaust emission," Renewable and Sustainable Energy Reviews, Elsevier, vol. 35(C), pages 279-284.
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    5. Deng, Banglin & Li, Qing & Chen, Yangyang & Li, Meng & Liu, Aodong & Ran, Jiaqi & Xu, Ying & Liu, Xiaoqiang & Fu, Jianqin & Feng, Renhua, 2019. "The effect of air/fuel ratio on the CO and NOx emissions for a twin-spark motorcycle gasoline engine under wide range of operating conditions," Energy, Elsevier, vol. 169(C), pages 1202-1213.
    6. Jung, Dongwon & Iida, Norimasa, 2018. "An investigation of multiple spark discharge using multi-coil ignition system for improving thermal efficiency of lean SI engine operation," Applied Energy, Elsevier, vol. 212(C), pages 322-332.
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