Scholarlink

<p>Electrostatic minimum quantity lubrication (EMQL) enhances lubrication performance through electrified droplets with improved adsorption and penetration. However, when the voltage reaches − 8&#xa0;kV, the oil mist is too dispersed due to excessive repulsive force, resulting in increased oil mist concentration. This study introduces an annular constraint nozzle to mitigate droplet dispersion by reducing atomization cone angle and velocity. Numerical simulations optimized the nozzle’s structure and parameters, revealing that oil mist concentration varies with the length-to-diameter ratio i and area ratio j between the constraint chamber and nozzle outlet. The constraint chamber reduces jet velocity and atomization cone angle, decreasing mist droplet dispersion greatly. The experimental results show that the oil mist concentration of the annular constrained cavity nozzle is lower than that of the original nozzle when the charged voltage is from 0 to -10&#xa0;kV, and the PM10 and PM2.5 of the annular constrained cavity can be reduced by 36.1% and 58.6% respectively when compared with the original nozzle at -8&#xa0;kV and − 10&#xa0;kV, which has a good effect of inhibiting the oil mist concentration.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

The influence of annular constrained cavity on the concentration of electrostatic minimum quantity lubricating oil mist

  • 期刊论文

  • 发表日期：

    2025年11月21日

查看全文
  • Xiaodong Hu,
  • Xuhao LYU,
  • Jiaqing Lou,
  • Junhao Yu,
  • Xuefeng Xu,
  • Ruochong Zhang

摘要

Electrostatic minimum quantity lubrication (EMQL) enhances lubrication performance through electrified droplets with improved adsorption and penetration. However, when the voltage reaches − 8 kV, the oil mist is too dispersed due to excessive repulsive force, resulting in increased oil mist concentration. This study introduces an annular constraint nozzle to mitigate droplet dispersion by reducing atomization cone angle and velocity. Numerical simulations optimized the nozzle’s structure and parameters, revealing that oil mist concentration varies with the length-to-diameter ratio i and area ratio j between the constraint chamber and nozzle outlet. The constraint chamber reduces jet velocity and atomization cone angle, decreasing mist droplet dispersion greatly. The experimental results show that the oil mist concentration of the annular constrained cavity nozzle is lower than that of the original nozzle when the charged voltage is from 0 to -10 kV, and the PM10 and PM2.5 of the annular constrained cavity can be reduced by 36.1% and 58.6% respectively when compared with the original nozzle at -8 kV and − 10 kV, which has a good effect of inhibiting the oil mist concentration.