| 基于多场耦合的重载柴油机气缸盖优化设计 |
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| 引用本文： | 李智,黄荣华,王兆文,丁红元. 基于多场耦合的重载柴油机气缸盖优化设计[J]. 华中科技大学学报(自然科学版), 2011, 0(8): 10-13 |
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| 作者姓名： | 李智 黄荣华 王兆文 丁红元 |
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| 作者单位： | 华中科技大学能源与动力工程学院; |
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| 基金项目： | 国家高技术研究发展计划资助项目(2008AA11A121) |
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| 摘 要： | 为了降低柴油机气缸盖的热负荷,以重载柴油机气缸盖为研究对象,进行了缸盖底部温度测量实验,并建立了发动机一维工作过程计算与缸盖内三维流动、传热与应力的多场耦合仿真模型,在此基础上提出了优化鼻梁区冷却通道尺寸并削薄缸盖底板的优化设计措施.结果表明:改进措施使该气缸盖的最高工作温度由336.3℃降低为325.7℃,最大热机耦合应力由498 MPa降低为491 MPa,有效降低了气缸盖的热负荷.
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| 关 键 词： | 重载柴油机 气缸盖 热负荷 温度测量 耦合仿真 |
Optimization design of the cylinder head in heavy duty diesel engines based on multi-field coupled method |
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| Li Zhi Huang Ronghua Wang Zhaowen Ding Hongyuan. Optimization design of the cylinder head in heavy duty diesel engines based on multi-field coupled method[J]. JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE, 2011, 0(8): 10-13 |
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| Authors: | Li Zhi Huang Ronghua Wang Zhaowen Ding Hongyuan |
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| Affiliation: | Li Zhi Huang Ronghua Wang Zhaowen Ding Hongyuan(School of Energy and Power Engineering,Huazhong University ofScience and Technology,Wuhan 430074,China) |
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| Abstract: | Temperature of the cylinder head bottom in diesel engines was measured to study how reducing the thermal load of the cylinder head.Multi-field coupled simulations of 1D engine thermodynamics simulation in conjunction with 3D flow,heat transfer and stress simulation in the cylinder head were performed on a heavy duty diesel engine.An improved structure of the cylinder head containing the optimization of the dimensions of the valve bridge passages and the thinning of the cylinder head bottom plate was propose... |
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| Keywords: | heavy duty diesel engine cylinder head thermal load temperature measurement coupled simulation |
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