针对柴油机活塞-缸套相对运动传热过程中,其运动部分边界条件及加载难以确定等问题,笔者采用稳态传热模拟结果和经验公式得到瞬态传热初始条件和边界条件,结合ANSYS中广泛应用的移动载荷方法,对4100QBZ柴油机活塞-缸套中一个工作循环的传热过程进行了模拟仿真,并分析了其整体温度分布和温度变化的原因。研究结果表明,使用ANSYS移动载荷方法,对燃气侧运动部分的边界条件加载可行,并可使计算过程更为简单,同时使传热模拟过程更加符合实际工作状态。 In the process of heat transfer of piston-cylinder liner’s relative motion, the boundary conditions of moving parts and loading are difficult to be determined. The author obtains the initial conditions and boundary conditions of transient heat transfer using the steady-state heat transfer simulation results and empirical formulas. Combining with ANSYS The widely used method of moving load simulates the heat transfer during a working cycle of 4100QBZ diesel engine piston-cylinder liner, and analyzes the causes of the overall temperature distribution and temperature changes. The results show that using the ANSYS moving load method, it is feasible to load the boundary conditions of gas-side moving parts and make the calculation process more simple, and make the heat transfer simulation process more in line with the actual working conditions.