摘要
为研究酸化油生物柴油作为车用柴油机代用燃料的可行性,对高压容器内酸化油生物柴油的碰壁现象进行了试验研究,分析了碰壁距离和碰壁角度对酸化油生物柴油碰壁过程的影响。试验结果表明:酸化油生物柴油碰壁后油束形态与柴油相似,与柴油相比,酸化油生物柴油的扩散直径和卷吸高度略大;随碰壁入射角的增大,酸化油生物柴油雾注上游半径减小,下游半径增大,卷吸高度变化不大,近壁区油气卷吸运动加强;随着碰壁距离的增加,酸化油生物柴油喷雾体的扩散直径和卷吸高度有所减小,近壁区油气卷吸运动减弱。
In order to study the feasibility of using acidic oil biodiesel as the alternative fuel for vehicle diesel engine ,the im‐pingement phenomenon in high pressure vessel was researched and the influences of impingement distance and angle on impinge‐ment process were analyzed .The results show that the fuel beam of acidic oil biodiesel has the same shape as that of diesel after impingement .Compared with diesel ,the diffusion diameter and entrainment height of acidic oil biodiesel are slightly larger . With the increase of impingement incidence angle ,the radius of spray upstream and downstream for the acidic oil biodiesel de‐crease and increase respectively and the mixture entrainment near the wall strengthened with little change of entrainment height .With the increase of impingement distance ,the spray diffusion diameter and entrainment height decrease and the mix‐ture entrainment near the wall weakens .
出处
《车用发动机》
北大核心
2014年第6期55-58,63,共5页
Vehicle Engine
基金
河南省杰出人才创新基金资助项目(104200510006)
关键词
酸化油
生物柴油
燃油雾化
喷雾碰壁
卷吸
acidic oil
biodiesel
fuel atomization
spray impingement
entrainment
