汽车发动机中流场,滚流检测方案(粒子图像测速)
检测样品
汽车电子电器
检测项目
流场,滚流
关联设备
共3种
方案详情文
This paper deals with the experimental investigations
of the in-cylinder tumble flows in an unfired internal combustion
engine with a flat piston at the engine speeds ranging from 400 to
1000 rev/min., and also with the dome and dome-cavity pistons at an
engine speed of 1000 rev/min., using particle image velocimetry.
From the two-dimensional in-cylinder flow measurements, tumble
flow analysis is carried out in the combustion space on a vertical
plane passing through cylinder axis. To analyze the tumble flows,
ensemble average velocity vectors are used and to characterize it,
tumble ratio is estimated. From the results, generally, we have found
that tumble ratio varies mainly with crank angle position. Also, at the
end of compression stroke, average turbulent kinetic energy is more
at higher engine speeds. We have also found that, at 330 crank angle
position, flat piston shows an improvement of about 85 and 23% in
tumble ratio, and about 24 and 2.5% in average turbulent kinetic
energy compared to dome and dome-cavity pistons respectively.
北京欧兰科技发展有限公司为您提供《汽车发动机中流场,滚流检测方案(粒子图像测速)》,该方案主要用于汽车电子电器中流场,滚流检测,参考标准《暂无》,《汽车发动机中流场,滚流检测方案(粒子图像测速)》用到的仪器有德国LaVision PIV/PLIF粒子成像测速场仪、汽车发动机多参量测试系统、Imager sCMOS PIV相机。
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