气流扰动对含氧混合燃料喷雾的影响  

Influence of Air Flow on the Spray of Oxygenated Fuel Blends

作　　者：杜慧勇[1] 张青锋[1] 刘建新[1] 郭川[1] 王站成[1] 徐斌[1] 

机构地区：[1]河南科技大学车辆与交通工程学院,河南洛阳471003

出　　处：《内燃机》2014年第1期21-23,51,共4页Internal Combustion Engines

基　　金：河南省科技攻关项目(122102210055)

摘　　要：内燃机缸内空气运动对混合气的形成和燃烧过程有重要的影响。为了更好地研究气流扰动对燃料喷雾体的影响,我们设计了在高压共轨试验台上一系列的实验,且在横向气流扰动下,使用频闪摄像系统,对柴油、黄连木籽生物柴油B30,B50和B100等不同类别的含氧混合燃油的喷雾进行拍照实验。结果发现,在气流扰动条件下,每种燃油喷雾的雾化效果都得到了增强;对于相同的气流扰动情况下,随着燃油粘度的增大,其喷雾投影面积均呈现出先增大后减小的趋势。Air flow plays an important role on the mixture formation and combustion process in-cylinder of diesel engine. A series of experiments on a high pressure common rail test bench had carried on to study the influence of air flow on the fuel spray. The spray in a cross air flow of diesel fuel, Pistaeia ehinensis seeds mixed in variable proportions was captured by electronic control camera system. Experiment results showed that： In the air flow conditions, each of the fuel spray atomization have been enhanced; atomization effect may also appear in further improvements for the same airflow disturbance cases, as the fuel viscosity increases, the spray projection area both showed the trend decreases after increases.

关 键 词：内燃机 共轨 气流 雾化 

分 类 号：TK421[动力工程及工程热物理—动力机械及工程]