Spray development and droplet characteristics of high temperature single-hole gasoline spray
Spray development and droplet characteristics of high temperature single-hole gasoline spray
复制标题
高温单孔汽油喷雾的喷雾发展及液滴特性
DOI：
10.1016/j.fuel.2016.11.068
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发表时间：
2017-03
期刊：
影响因子：
7.4
通讯作者：
Zhang Miao
中科院分区：
文献类型：
--
作者：
Liu Yi;Pei Yiqiang;Peng Zhijun;Qin Jing;Zhang Yan;Ren Yuan;Zhang Miao
随着提高汽油直喷（GDI）发动机的燃油喷射压力以改善雾化质量，提高燃油温度作为改善混合质量和燃烧过程的另一种有前途的方法也受到越来越多的关注。为了了解燃油温度升高时的雾化过程，采用背照式成像技术和相位多普勒粒子分析仪（PDPA），在燃油温度高达376 °C的超临界状态下，对高温喷雾的喷雾发展过程和液滴特性进行了研究。结果表明，随着燃油温度的升高，喷雾的分散范围增大，透明性增强。当燃油温度低于临界温度时，随着燃油温度的升高，喷雾贯穿度有所减小，喷雾锥角明显增大。当燃料温度从25 °C升高到261 °C时，液滴算术平均直径（D10）和Sauter平均直径（SMD）从约10 μm减小到1.5 μm和从30 μm减小到3 μm，但是超过261 °C的高温导致液滴变得太小而不能由PDPA仪器测量。
As increasing fuel injection pressure in GDI (Gasoline Direct Injection) engines has been used for improving atomization quality, raising fuel temperature is also receiving more and more attention as another promising method to improve mixing quality and combustion process. In order to understand atomization process with increased fuel temperatures, spray development and droplet characteristics of high fuel temperature spray were investigated by using back-illumination imaging technique and Phase Doppler Particle Analyzer (PDPA) with fuel temperature up to 376 °C as supercritical state. Results show that sprays dispersed more widely and became more transparent with increasing fuel temperature. Spray penetrations had some reduction and spray cone angle had obvious increase with increased fuel temperature not more than critical temperature. While droplet arithmetic mean diameter (D10) and Sauter Mean Diameter (SMD) was reduced from about 10 μm to 1.5 μm and from 30 μm to 3 μm as fuel temperature rise from 25 °C to 261 °C, high temperature more than 261 °C resulted in droplets became too small to be measured by the PDPA instrument.
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影响因子：
7.4
作者：
Serras-Pereira, J.;Aleiferis, P. G.;Richardson, D.
通讯作者：
Richardson, D.
DOI：
10.1016/j.ijheatfluidflow.2013.11.005
发表时间：
2014-02-01
影响因子：
2.6
作者：
Lee, Sanghoon;Park, Sungwook
通讯作者：
Park, Sungwook
影响因子：
7.4
作者：
Aleiferis, P. G.;van Romunde, Z. R.
通讯作者：
van Romunde, Z. R.
DOI：
10.4271/2001-01-1203
发表时间：
2001-03
期刊：
--
影响因子：
--
作者：
Eric J. Stevens;R. Steeper
通讯作者：
Eric J. Stevens;R. Steeper
DOI：
10.2514/6.1995-382
发表时间：
1995-01
期刊：
--
影响因子：
--
作者：
P. Wu;Tzong H. Chen;A. Nejad;C. Carter
通讯作者：
P. Wu;Tzong H. Chen;A. Nejad;C. Carter