Visualization of the near Field Microscopic Spray Structure in Diesel Engine

Zhi Sheng Gao; Qian Wang; Yu Qiang Wu; Zhi Xia He; Li Ming Dai

doi:10.4028/www.scientific.net/AMR.1078.276

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1078Visualization of the near Field Microscopic Spray...

Visualization of the near Field Microscopic Spray Structure in Diesel Engine

Abstract:

Based on the high speed camera combined with a microscopic lens the near-nozzle spray surface structure and flow characteristics of the high pressure diesel fuel jet were investigated. During the steady period of the spray development, the periodically undulatory structure was observed at the circular direction of the jet at the near nozzle area at the injection pressure of 5MPa. The atomization of the spray improved and the periodical structure was veiled by fine droplets at higher injection pressure of 40MPa. During the closing period of the nozzle lift, the spiraling shape was also observed along the surface of the fuel jet which indicates the internal helical flow characteristic.

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Periodical:

Advanced Materials Research (Volume 1078)

Pages:

276-279

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1078.276

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Online since:

December 2014

Authors:

Zhi Sheng Gao*, Qian Wang, Yu Qiang Wu, Zhi Xia He, Li Ming Dai

Keywords:

Diesel Combustion Engine, Microscope Properties, Near-Nozzle Spray, Visualization

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