滚子柱塞泵凸轮导轨的搅油损失力矩研究

doi:10.3901/JME.2025.14.306

摘要/Abstract

摘要： 滚子柱塞泵的凸轮导轨部件在高转速时的搅油损失是其机械效率损失的主要来源之一。为快速、精确计算搅油力矩，首先基于凸轮导轨轮廓线的三维空间包络理论，对凸轮导轨曲面进行建模。进而建立滚子柱塞泵等加等减速凸轮导轨部件搅油损失的精确解析模型，将整个搅油损失分为周面摩擦阻力矩和端面摩擦阻力矩两部分，并讨论关键结构参数对搅油阻力矩的影响。随后还采用CFD数值模拟对解析模型进行了验证。理论分析表明，凸轮导轨的搅油损失随着转速的上升而增加。在转速12 000 r/min下，搅油阻力矩达到0.26 N·m，其中周面摩擦阻力矩和端面摩擦阻力矩分别占到总力矩的40.2%和59.8%。最后采用试验手段对1 000～12 000 r/min转速下的搅油力矩进行了测试，并考虑了油液温度的影响。搅油损失的试验结果与解析及CFD数值模拟结果吻合较好，为搅油损失的研究及提高机械效率提供指导。

关键词: 搅油损失, 滚子柱塞泵, 凸轮导轨, CFD模拟, 解析模型

Abstract: The oil stirring loss of cam guide rail of the roller piston pump at high speed is one of the main sources of its mechanical efficiency loss. In order to quickly and accurately calculate the oil stirring torque, the model of the cam guide rail surface is established firstly based on the three-dimensional space envelope theory of the cam guide rail contour. Furthermore, an accurate analytical model of the stirring loss of the acceleration and deceleration cam guide rail components of the roller piston pump is established. The whole oil stirring loss is divided into two parts: peripheral surface friction resistance torque and end surface friction resistance torque, and the influence of key structural parameters on oil stirring resistance torque is discussed. Then the theoretical model is verified by CFD simulation preliminarily. Theoretical model shows that the stirring loss of the cam guide increases with the increase of the speed. And at speed of 12 000 r/min, the stirring resistance torque reaches 0.26 N·m, of which the circumferential surface friction resistance torque and end surface friction resistance torque account for 40.2% and 59.8% of the total torque, respectively. Finally, the oil stirring torque at 1 000-12 000 r/min is tested by experimental means, and the influence of oil temperature is considered. The experimental results are in good agreement with the theoretical and CFD numerical simulation results, which provide guidance for the research of stirring loss and the improvement of mechanical efficiency.

Key words: stirring loss, roller piston pump, cam guide rail, CFD simulation, theoretical model

中图分类号:

TH137

张晨晨, 陈义, 李胜, 阮健. 滚子柱塞泵凸轮导轨的搅油损失力矩研究[J]. 机械工程学报, 2025, 61(14): 306-320.

ZHANG Chenchen, CHEN Yi, LI Sheng, RUAN Jian. Research on Oil Stirring Loss Torque for Cam Guide Rail of Roller Piston Pump[J]. Journal of Mechanical Engineering, 2025, 61(14): 306-320.

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