吉林大学学报(工学版) ›› 2018, Vol. 48 ›› Issue (3): 720-726.doi: 10.13229/j.cnki.jdxbgxb2017038020171011

• Orginal Article • Previous Articles     Next Articles

Gasoline spray front droplet size characteristics

YU Liu1,2, LIU Zhong-chang1, LIU Jin-shan1, LIU Jiang-wei2, DU Hong-fei2, CHENG Peng1   

  1. 1.State Key Laboratory of Automotive Simulation and Control,Jilin University, Changchun 130022,China;
    2.R&D Center,China FAW Group Co., Ltd., Changchun 130011,China;
  • Received:2017-09-27 Online:2018-05-20 Published:2018-05-20

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Abstract: In this paper, the effects of injection pressure on the droplet size distribution characteristics in spray front field, spray front and full range droplet size of gasoline direct injection, as well as space distribution characteristics of the droplet size in the spray front field are investigated the using laser diffraction technique. The results indicate that, first, the increase in injection pressure can improve the atomization quality, and promote the droplet size distribution of the spray front field moving to the small diameter direction; second, the spray front droplet size (SMD and Dv90) is bigger than the full range droplet size (SMD and Dv90); third, in the spray front field, the SMD near the near the spray plume axis is bigger than that in the marginal region and the Dv90 near the spray plume axis is smaller than that in the marginal region.

Key words: power mechinery and engineering, vehicle engineering, gasoline engine, spray characteristics, laser diffraction, droplet size, spray front

CLC Number: 

  • TK41
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