| 基于导热特性分析的S195柴油机活塞改进设计 |
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| 引用本文： | 林雄萍,钟晓龙,袁嘉隆,郑捷庆. 基于导热特性分析的S195柴油机活塞改进设计[J]. 集美大学学报(自然科学版), 2013, 0(2): 124-127 |
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| 作者姓名： | 林雄萍 钟晓龙 袁嘉隆 郑捷庆 |
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| 作者单位： | [1]集美大学诚毅学院,福建厦门361021 [2]福建省清洁燃烧与能源高效利用工程技术研究中心,福建厦门361021 |
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| 基金项目： | 福建省科技计划重点项目（2012H0031）;福建省自然科学基金资助项目（2009J01261）;福建省科技厅高校专项（JK2011028） |
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| 摘 要： | 为有效减少柴油机活塞的热负荷，延长其使用寿命，分析了其温度场分布特性，将S195柴油机活塞头部由平直形状改进为浅ω型，并应用ANSYS有限元分析软件,采用三维有限元法，计算S195柴油机活塞在热载荷作用下的温度场和换热情况,比较了改进前后两种结构的导热特性.模拟计算结果表明：改进后活塞平直顶面温度最高值均比以前的低（除ω形凹坑的中心凸起处略高30℃左右），同时环槽区与裙部的温度也比以前低.更为重要的是，改进后的活塞顶部的温度与第一、第二环槽的温差进一步拉大，使得改进后的活塞通过环槽处的散热动力大大提升.
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| 关 键 词： | 活塞 三维有限元法 温度场 导热特性 |
A Improvement Design of S195 Diesel Engine Piston Based on Heat Transfer Characteristics Study |
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| LIN Xiong-ping,ZHONG Xiao-long,YUAN Jia-long,ZHENG Jie-qing. A Improvement Design of S195 Diesel Engine Piston Based on Heat Transfer Characteristics Study[J]. the Editorial Board of Jimei University(Natural Science), 2013, 0(2): 124-127 |
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| Authors: | LIN Xiong-ping ZHONG Xiao-long YUAN Jia-long ZHENG Jie-qing |
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| Affiliation: | 1.Mechanical engineering department,Chengyi Institute,Jimei University,Xiamen 361021, China;2.Cleaning Combustion and Energy Utilization Research Center of Fujian Province,Xiamen 361021,China) |
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| Abstract: | In order to effectively reduce the heat load of diesel engine piston and extend its life,the structure of S195 diesel engine piston head was improved from a flat shape to shallow ω-shape from the view point of the analysis of its temperature distribution characteristic.The ANSYS finite element analysis software was applied to calculated the two piston.s three-dimensional temperature fields respectively.It can be found from the simulation results that the temperatures of flat top surface are higher than those of the improved one（apart from the ω-shaped pits Center raised slightly higher at around 30 ℃）,the same performance also occurs on the piston ring and the skirt areas.More importantly the temperature between the top surface and the first/second ring slots is widened after the piston structure is improved,making the heat transfer performance at the ring groove of piston improved. |
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| Keywords: | piston；3-D finite element method；temperature field；heat transfer characteristic |
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