【摘 要】
：
Multi-hole fuel injectors are used in a variety of automotive applications. For such injectors, it is desirable to obtain a variety of spray characteristics
【机 构】
：
En'Urga Inc., USA
【出 处】
：
13th International Conference on Liquid Atomization and Spra
论文部分内容阅读
Multi-hole fuel injectors are used in a variety of automotive applications. For such injectors, it is desirable to obtain a variety of spray characteristics such as total spray angle, fuel drop surface areas, individual plume locations, and plume angles so as to optimize their efficiency. Simultaneous light-of-sight extinction tomography measurements at two axial locations were used to obtain transient characteristics of two GDI injectors. The measurements were obtained in a pressure chamber with opposing windows. Therefore, the nozzle was rotated twelve times and data was obtained synchronously with the injection pulse so as to enable deconvolution of the line-of-sight measurements. The fuel temperature and ambient pressure was found to be the two most important characteristics in determining the plume locations and angles. The plume centroid locations, obtained using extinction tomography, were compared with those obtained with a mechanical patternator. The centroid locations of the plumes obtained from the two instruments matched within the uncertainty band of these instruments.
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