【摘要】 为降低汽车行业发动机机油泵的流量脉动并提升其整体性能，提出一种新型分段多圆弧摆线转子的设计，其转子型线由多段圆弧构成.通过建立分段多圆弧摆线转子和传统单摆线转子泵的三维模型，运用数值模拟方法研究了该转子对摆线转子泵内部流场和流量脉动的影响；通过实验对比了不同摆线转子泵的出口流量特性，并进行动力学仿真对比外转子的接触力和转速波动.结果表明，该设计摆线转子能够降低齿顶处约8%的压力峰值；在提升摆线转子泵约5%容积效率的同时，还能降低10%以上的流量脉动，且随着摆线转子的转速提升，其降低流量脉动的性能表现越优异；降低约25%接触力峰值的同时，转速波动也更为稳定.更多还原

【Abstract】 To reduce the flow pulsation and enhance the overall performance of engine oil pumps in the automotive industry, a new design of segmented multi-arc cycloidal rotors is proposed, with rotor profiles composed of multiple circular arcs. By establishing three-dimensional models of the segmented multi-arc cycloidal rotor and the traditional single cycloidal rotor pump, the influence of this rotor on the internal flow field and flow pulsation of the cycloidal rotor pump is studied using numerical simulation methods; the outlet flow characteristics of different cycloidal rotor pumps are compared experimentally, and dynamic simulations are conducted to compare the contact force and rotational speed fluctuation of the outer rotor. The results show that the designed cycloidal rotor can reduce the pressure peak at the tooth tip by about 8%; while improving the volumetric efficiency of the cycloidal rotor pump by about 5%, it also reduces flow pulsation by more than 10%, and as the rotational speed of the cycloidal rotor increases, its performance in reducing flow pulsation becomes more significant; with the contact force peak reduced by about 25%, the rotational speed fluctuation also becomes more stable.更多还原