| 卧式柴油机主轴承润滑特性的影响因素分析 |
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| 引用本文： | 雷基林,申立中,毕玉华,贾德文,徐跃强.卧式柴油机主轴承润滑特性的影响因素分析[J].农业工程学报,2012,28(17):19-24. |
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| 作者姓名： | 雷基林 申立中 毕玉华 贾德文 徐跃强 |
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| 作者单位： | 昆明理工大学交通工程学院云南省内燃机重点实验室,昆明,650500 |
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| 基金项目： | 云南省科技创新强省计划项目（2008AD007）；云南省应用基础研究基金资助项目（2009ZC036M） |
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| 摘 要： | 针对自主开发的2D25卧式柴油机,基于弹性流体动力润滑理论,采用AVL Excite Power Unit软件建立了主轴承润滑仿真模型,在考虑内燃机轴瓦与轴承座的弹性变形、轴瓦与轴颈粗糙度的基础上,研究了轴承间隙、轴承宽度、进油口位置和油槽宽度对主轴承润滑特性的影响。研究结果表明:在分析的4个结构参数中,轴承间隙和轴承宽度对主轴承润滑特性影响较大,是主要影响因素,进油口位置和油槽宽度对主轴承润滑特性的影响相对较小,是次要影响因素。随着轴承间隙的增加,轴承平均载荷、轴承平均弯矩、峰值油膜压力和平均机油流出量增加,最小油膜厚度和平均摩擦功耗降低。随着轴承宽度的增加,轴承平均载荷、轴承平均弯矩、峰值油膜压力和平均机油流出量减小,最小油膜厚度和平均摩擦功耗增加。进油口位置和油槽宽度对轴承润滑特性的影响不呈现明显的变化规律。
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| 关 键 词： | 柴油机 轴承 润滑 弹性流体动力润滑 正交分析 |
| 收稿时间： | 4/2/2012 12:00:00 AM |
| 修稿时间： | 2012/8/26 0:00:00 |
Analysis on influence factors of main bearing lubrication characteristics for horizontal diesel engine |
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| Lei Jilin,Shen Lizhong,Bi Yuhu,Jia Dewen and Xu Yueqiang.Analysis on influence factors of main bearing lubrication characteristics for horizontal diesel engine[J].Transactions of the Chinese Society of Agricultural Engineering,2012,28(17):19-24. |
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| Authors: | Lei Jilin Shen Lizhong Bi Yuhu Jia Dewen and Xu Yueqiang |
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| Institution: | (Yunnan Province Key Laboratory of Engines,Kunming University of Science and Technology,Kunming 650224,China) |
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| Abstract: | Based on the elastic fluid dynamic lubrication theory, a three-dimensional lubrication simulation model of the main bearing was built with AVL Excite Power Unit software for 2D25 type horizontal diesel engine, which had been designed and developed independently. According to the elastic deformation of bearing bush and bearing seat and the roughness of bearing bush and journal, the impacts of the bearing clearance, width, oil inlet position and the oil groove width on the main bearing lubrication characteristics were investigated. The results indicated that the bearing clearance and the bearing width were the main influence factors and made great effects on the main bearing lubrication among the four structural parameters, while the oil inlet position and the oil groove width were the secondary influence factors. With the rising of the bearing clearance, the average load, average moment, peak oil film pressure and average oil outflow quantity of bearing increased and the minimum oil film thickness and average friction power consumption were reduced. With the increase of the bearing width, the average load, average moment, peak oil film pressure and average oil outflow quantity of bearing decreased and the minimum oil film thickness and average friction power consumption increased. There is no significant regularity of the effects of the oil inlet position and the oil groove width on the main bearing lubrication characteristics. |
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| Keywords: | diesel engine bearing Lubrication elastic hydrodynamic lubrication orthogonal analysis |
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