汽车发动机机油泵的综合性能评价  

Evaluation for Comprehensive Performances of Oil Pump Used in Vehicle Engine

作　　者：吴伟蔚[1] 马富银[1] 

机构地区：[1]上海工程技术大学汽车工程学院,上海201620

出　　处：《中国公路学报》2012年第2期134-141,共8页China Journal of Highway and Transport

基　　金：上海市教委科研创新项目(10YZ174)

摘　　要：为了提高车用发动机润滑系统中的机油泵的研究和设计水平,对机油泵的主要性能指标进行了讨论,分析了不同类型机油泵的特点和发展趋势。结合作者近期生产实践和试验研究中的一些工作,分析了车用发动机机油泵试验台的架构、功能及典型试验结果。以目前各国的文献成果为依据,综合研究了排量、容积效率、压力波动等性能指标的影响因素及相互联系。通过试验台的测试实例论证了机油泵振动和噪声的测试方法和分析手段。结果表明:定排量机油泵无法满足发动机节能减排的要求,必须进行变排量泵的研发;基于完全空化模型的数值模拟方法是分析机油泵空化现象的有效手段;机油泵的振动和噪声性能受到压力波动和机械啮合的双重影响,必须综合考虑。In order to improve the research and design level of the oil pump used in vehicle engine lubrication system,the authors discussed its key performance indicators,and analyzed the characteristics and development trend of various oil pumps.The architecture and functions of oil pump test bench,and the typical experimental results were discussed in combination with the authors＇ recent work in production practice and experimental studies.On the basis of the research achievements found in literatures,the affecting factors of important performance indicators,such as displacement,volume efficiency,pressure fluctuation and the relationship among them were thoroughly studied.The oil pump vibration,noise test and analysis methods were demonstrated through a practical measurement case.The results show that the fixed-displacement oil pump cannot meet the requirements of energy saving and emission reduction.Therefore,further research and development for variable displacement pumps must be carried out.Numerical simulation based on the full cavitation model is an effective way to study the cavitation existing in the oil pump.The vibration and noise performance of the oil pump is affected by the impacts of both the pressure fluctuation and mechanical meshing,which should be taken into account in an integrated manner.

关 键 词：汽车工程 机油泵 综述 排量 容积效率 压力波动 振动 噪声 

分 类 号：U464.137.1[机械工程—车辆工程]