用于研究直喷汽油发动机内混合物形成的不同的激发态复合物和模型燃料的应用有效性分析

2017/09/08   下载量： 5 次

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应用领域 汽车及零部件
检测样本 汽车电子电器
检测项目 热性能>燃烧特性
参考标准 暂无

采用LaVision公司由增强型CCD相机构成的平面激光诱导荧光（PLIF）测试系统对直喷汽油发动机内混合物形成的不同的激发态复合物和模型燃料的应用有效性进行了分析研究。

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In this work we study mixture preparation inside the cylinder of an optically accessible DI gasoline-engine. Crank angle
resolved investigation of the atomization process of different model-fuels is carried out by means of planar Mie-scattering.
The vaporization of the liquid fuel and the transport processes inside the cylinder are studied by Planar Laser-Induced-
Exciplex-Fluorescence (PLIEF) using two different exciplex-systems and two different model-fuels. Besides the standard
mono-component model fuel isooctane a newly developed multi component fuel (MCF) was examined. It represents the
boiling behaviour of standard gasoline quite well and shows almost the same spectroscopic characteristics as isooctane. The
simultaneously recorded crank angle resolved distributions of liquid and vaporized fuel for a stratified and homogeneous
operation are visualized for both model fuels and both exciplex-tracers. The corrected intensity values of the fluorescence
emissions of the two exciplex-systems TMPD/naphthalene and TEA/benzene were compared under same operation
conditions.
Furthermore cyclic variations of vaporized fuel distributions near the spark plug are investigated. Simultaneous detection of
the in-cylinder pressure allowed the correlation between the fuel vapor distribution near the spark plug and the combustion
quality of this air-fuel-mixture.

上一篇 在一个双稳湍流涡旋火焰中，对间歇性动态的时间-频率定位
下一篇 喷嘴直径对火焰举升长度的影响

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北京欧兰科技发展有限公司
金牌会员 丨 第17年
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