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根据泵的结构原理，采用在泵体简化图上分块划分控制体积的方法，利用控制体积能量守恒定律，建立SPB泵各存油容腔内工作介质温度的微分方程，并求解得出温度的时变规律，进而定量分析SPB泵的自冷却性能。
According to the principle of the pump structure, the control volume is divided into blocks on the pump simplified diagram, and the governing equations of the volumetric energy conservation are used to establish the differential equation of the working medium temperature in each oil storage chamber of the SPB pump, and the temperature Time-varying law, and then quantitative analysis of self-cooling SPB pump performance.