蒸发管喷嘴燃油雾化特性试验研究

AN EXPERIMENTAL STUDY ON FUEL SPRAY ATOMISING CHARACTERISTICS OF EVAPORATING PIPE ATOMIZER

<正> 一、试验与测量 试验工作在预混式喷嘴试验器上进行(图1)。试验蒸发管共有15种,其区别在于进出口直径、供油喷头的孔径和孔数的不同;有的试验件装有定位螺母或故意造成供油杆偏斜。试验参数变化范围:雾化空气速度V_α=45～130m/s,气油比AFR=q_(mα)/q_(mf)=0.6～5,燃油压力P_J=(0.4～52)×10~4Pα,粒度仪测量位置到蒸发管出口轴向距离l=20～70mm。

This paper summarizes the test research on the atomizing characteristics of the evaporating pipe atpmizer. Among all the factors which affect the fuel atomization, the atomizing air speed is the most important, but the fuel-air-ratio and geometrical parameters have certain effects on it as well. The distance of the fuel atomization shortens with the increase of the atomizing air speed.