| 摘要:为研究柴油机缸盖零件在一个工作循环内温度场即循环瞬态温度场的分布、变化规律,应用有限元分析软件ANSYS对某柴油机气缸盖进行了循环瞬态温度场的仿真计算。结果显示:柴油机在稳定工况运行时,缸内燃气周期性热冲击造成缸盖底板壁面温度波动明显；沿缸盖高度方向,随着深度变大,温度波动幅度迅速变小,当深度为2mm时,温度趋于平稳；而缸盖外表面温度变化平稳,无明显波动现象。 |
| 关键词: 柴油机 气缸盖 瞬态温度场 有限元 |
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| Cyclic Transient Temperature Field Numerical Simulation of Diesel Engine Cylinder Head |
| Gao Chunlin,Lv Jianming,OuYang Guangyao,Zhang Ping |
| No.9128;College of Naval Architecture and Power,Naval University of Engineering, HubeiWuhan 430033 |
| Abstract:To study the distribution of cyclic transient temperature field of diesel engine cylinder head as well as its changing rules, finite element analysis software ANASYS was employed to carry out numerical simulations on a diesel engine's cylinder head. The results show that when the diesel engine runs in a steady condition, the temperature field of areas near cylinder head fire deck was obviously affected by the cyclic impact of burned gas. With the increase of the distance from fire deck wall, the swing of wall temperature in cylinder head will decrease rapidly. When the depth exceeds about 2mm, the swing went to placidity. In addition, the temperature in outer surface varied placidly and there was no obvious transient temperature variation. |
| Key words: diesel engine cylinder head transient temperature field finite element |
