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柴油机是一种热能动力机械,常会因高温热负荷引起一些部件的故障,如缸套、活塞、活塞环、气门的过早损坏;燃烧室、活塞顶部位的烧蚀;缸盖、活塞、缸套的开裂,显然研究这些部件的温度场意义重大。以往的研究局限于用有限元求解稳定温度场,而实际温度场是随工况不同而不断变化的。本文对用有限元求解瞬态温度变化进行了初步研究,其结果可用于求解柴油机一些部件的瞬态温度场。
Diesel engine is a thermal power machinery, often due to high temperature heat load caused by the failure of some components, such as cylinder liner, piston, piston ring, premature valve damage; combustion chamber, the piston top of the ablation; cylinder head, piston, cylinder Set of cracking, obviously, the temperature field of these components is of great significance. In the past, the research was limited to solving the stable temperature field by finite element method. However, the actual temperature field was constantly changing with different working conditions. In this paper, the finite element method is used to solve the transient temperature changes. The results can be used to solve the transient temperature field of some diesel engine components.