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Characterisation of very high pressure diesel sprays using digital imaging techniques

机译:使用数字成像技术表征超高压柴油喷雾器

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摘要

Injection pressure is one of the most influential factors on the performance of diesel engines and particulate emissions. Car manufacturers have gradually increased this pressure over recent years. The objective of this study is therefore to investigate the effect of injection pressure on the macroscopic spray characteristics for a wide pressure range (up to 250 MPa). For this, we developed a measurement technique able to extract these characteristics both quickly and reliably. The results obtained make it possible to widen the application fields of the temporal evolntion law already suggested by some authors and establish new laws for other spray characteristics (angle, area, volume,...).
机译:喷射压力是影响柴油发动机性能和微粒排放的最重要因素之一。近年来,汽车制造商逐渐增加了这种压力。因此,本研究的目的是研究在较大压力范围(最高250 MPa)下注射压力对宏观喷雾特性的影响。为此,我们开发了一种能够快速而可靠地提取这些特征的测量技术。获得的结果使得有可能拓宽一些作者已经提出的时间演变定律的应用领域,并为其他喷雾特性(角度,面积,体积等)建立新的定律。

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