静电喷雾技术影响汽油燃烧特性的实验

Effects of Electrostatic Spraying Technique on Combustion Characteristics of Gasoline

针对汽油的燃烧特性,搭建了基于静电喷雾燃烧技术试验台,对燃烧室内沿轴向位置的气相温度和燃烧室内关键位置烟气组分的变化规律进行测试。实验用直径和高度分别是50 cm和80 cm的铁桶模拟燃烧室,在桶的一侧同一条直线上纵向均匀间隔10 cm打出若干个圆孔;采用桑塔纳3 000的喷油器使汽油雾化;用针尖电极和静电发生器使汽油带上静电。当喷油器喷射出来的汽油持续燃烧时让热电偶和废气分析仪的探头通过圆孔伸入到铁桶各个高度的中心部位,分别测试带上静电前后桶内沿轴向位置的气相温度和关键位置气体组分的变化规律。实验结果表明,静电喷雾燃烧技术明显提升汽油燃烧的热效率和改善烟气的排放,使用静电喷雾燃烧技术后,喷嘴附近温度升高幅度可以达到18%左右;HC排放下降幅度可以达到60%以上,CO排放下降幅度可以达到58%以上,CO2排放的增加幅度可以达到52%以上,NOX排放下降幅度可以达到45%以上。从而为节能减排提供了一条新的思路。

In view of the eombustion characteristics of gasoline, a test-bed was set up ased on electrostatic spray vombusliml lechnology. The test was conducted on the gas temperature along the axial position in the combustion chamber and lhe xariation of the combustion chamber flue gas composition of the key position. Experimental resuhs show tim the electrostatic spray combustion te（：hnolngy can significantly improve the thermal effieien（＇y of gasoline comlmstion and inlproe flue gas emissimls; the use of electrostatic spray combustion technology increases the temperature near the mzzh, to almul 18c＆. ： HC emissions decreases more than 60% , CO emissions decreases more than 58% evreases more than 52% , and NOxemissions decreases more than 45% , emissions reduction provides a new CO, emissions idea for energy