文章摘要
叶年业,黄忠文,穆建华,黄 勇,夏志豪,张 俊.车用汽油机轴承润滑可靠性研究[J].润滑与密封,2014,39(8):103-107
车用汽油机轴承润滑可靠性研究
  
DOI:10.3969/j.issn.0254-0150.2014.08.021
中文关键词: 汽油机  轴承润滑  可靠性  最小油膜厚度  轴瓦
英文关键词: gasoline  bearing lubrication  reliability  minimum oil thickness  bearing shell
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作者单位E-mail
叶年业 上汽通用五菱技术中心 yezi30@163.com 
黄忠文 上汽通用五菱技术中心  
穆建华 上汽通用五菱技术中心  
黄 勇 上汽通用五菱技术中心  
夏志豪 上汽通用五菱技术中心  
张 俊 上汽通用五菱技术中心  
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中文摘要:
      为实现车用发动机轴承工作可靠、耐久目的,应用摩擦学理论及发动机CAE技术对现有机型曲柄连杆机构工作过程进行分析,研究轴承间隙极限状态下轴承比压、轴心轨迹、最小油膜厚度随发动机转速的变化关系,从中对轴承润滑可靠性进行评价。研究结果表明,在发动机本体及边界条件未变下,曲轴主轴承最小油膜厚度随转速增大而减小,连杆大头轴承则随转速增大先增大后减小,最大轴承间隙下的最小油膜厚度比最小间隙下大40%,轴承均未出现干摩擦现象,波纹状轴瓦润滑性能优于平状轴瓦。
英文摘要:
      To achieve the purposes of bearing working reliable and durable, tribology and engine CAE technology were applied to analyze the bearing special pressure, bearing orbit and minimum film thickness in bearing clearance limit state, and reliability of the bearing lubrication was evaluated. The results show that, the minimum film thickness of main bearings are decreased with engine speed increased in engine body and boundary conditions unchanged, which the connecting rod bearings are increased first and then decreased. The minimum film thickness of maximum bearing clearances is 40% larger than that of minimum bearing clearances, the phenomenon of dry friction is not met, lubrication performance of corrugated bearing shell is better than that of flat bearing.
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