本文在定量分析上,以及在防止裂纹发生的方法上研讨了发动机缸盖的热应力问题。应该指出,在目前的技术工艺状况下,对于燃烧室和冷却液侧的热边界条件都缺乏了解。降低热应力的有效方案有各气缸隔开和采用隔热板。必须指出,在冷却液侧应进一步加强热传导方案的研究。 In this paper, the quantitative analysis, as well as to prevent the occurrence of cracks in the engine cylinder head thermal stress on the issue. It should be pointed out that under the current technological process conditions, there is a lack of understanding of the thermal boundary conditions on the combustion chamber and coolant side. An effective solution to reduce thermal stress is to separate each cylinder and use a thermal shield. It must be pointed out that the study of heat transfer schemes should be further strengthened on the coolant side.