SKL-8VDS 24/24AL型柴油机是一种结构紧凑的柴油机。由于V形夹角为45°,曲轴结构设计比较特殊,不能应用通常的设计计算程序,而必须采用现代的光弹模型试验法和疲劳振动试验法。文中指出了各过渡圆角处的应力集中系数、疲劳强度以及安全系数;并介绍了平衡质量的设置、强度计算和辅助模型试验的情况。 SKL-8VDS 24 / 24AL diesel engine is a compact diesel engine. Because of the V-shaped angle of 45 °, crankshaft structure design is rather special, can not be applied to the usual design and calculation procedures, and must use modern photoelastic model test method and fatigue vibration test method. In this paper, stress concentration factor, fatigue strength and safety factor at each transition fillet are pointed out. The setting of balance mass, strength calculation and auxiliary model test are introduced.