在分析涡旋压缩机曲柄销滑动轴承实际运动的基础上，推导了相应的雷诺方程，提出绝热计算的油膜润滑数学模型，运用有限差分方法对雷诺方程、能量方程和粘温方程联立数值求解，通过实例计算得到了润滑油膜的压力和温度分布规律，为正确分析曲柄销滑动轴承的承载能力提供了理论依据 Based on the analysis of the actual movement of scroll pin crank bearing, the corresponding Reynolds equation is derived and the mathematic model of oil film lubrication is proposed. The finite difference method is used to solve the Reynolds equation, the energy equation and the viscosity-temperature equation simultaneously. , The law of pressure and temperature distribution of lubricating oil film was calculated through examples and provided a theoretical basis for the correct analysis of bearing capacity of crankpin sliding bearing