为研究结构参数、运转参数及空气温度对蜂窝式轴心通风器油气分离性能的影响，建立了基于质点运动学的蜂窝孔内颗粒运动方程，采用龙格-库塔法求解得到颗粒运动轨迹。结合蜂窝结构几何特点给出颗粒分离判据并求解从蜂窝孔入口不同位置进入的颗粒群的最小分离直径。在给定颗粒直径分布的条件下，求得整个蜂窝孔的分离效率。分析了各项参数对蜂窝孔的分离效率的影响，并给出了结构参数对分离效率影响的拟合关系式。结果表明，结构参数一定时，分离效率随着转速提高和通风流量减小而增加；运转参数一定时，增大蜂窝孔长度和减小对边距使分离效率提高；降低空气温度使分离效率提高，但影响微弱。

To study the influence of structural parameters, operating parameters and air temperature on the oil/gas separation performance of axial breather with honeycomb, the particle motion equa-tion in honeycomb hole was established based on particle kinematics. The particle trajectory is obtained by Runge-Kutta methods. Combined with the separation criterion, the minimum sep-aration diameter of the particle swarm entering from different positions at the entrance of the honeycomb hole was solved. Under the condition of given particle diameter distribution, The separation efficiency of the whole honeycomb was obtained. The effects of various parameters on the separation efficiency of honeycomb holes were analyzed, and the relationship between structural parameters and separation efficiency is given. The results show that the separation efficiency increased with the increase of rotational speed and the decrease of ventilation flow rate when the structure parameters are fixed; the separation efficiency increased with the in-crease of honeycomb hole length and the decrease of opposite side distance when the opera-tion parameters are fixed; the separation efficiency increased with the decrease of air tempera-ture, but the influence is weak.