张文静，陈渭，门日秀，李培.浮环轴承温度预测模型的仿真及试验验证[J].内燃机工程,2017,38(1):50-55.
浮环轴承温度预测模型的仿真及试验验证
Temperature Predication Model of Floating Ring Bearing and Its Experimental Validation
DOI：
关键词:内燃机  温度预测  高速  动载  浮环轴承  涡轮增压器
Key Words:IC engine  temperature prediction  high speed  dynamic load  floating ring bearing  turbocharger
基金项目:国防科技重点实验室基金项目(9140C330104130C33112)
作者单位
张文静，陈渭，门日秀，李培 1.西安交通大学 现代设计及转子轴承系统教育部重点实验室,西安 710049
2.中国北方发动机研究所 柴油机高增压技术国家级重点实验室,天津 300400 
摘要点击次数: 2591
全文下载次数: 1708
摘要:综合考虑温黏效应和热膨胀导致的半径间隙变化，结合动载作用下的非线性油膜力，考虑压力流和剪切流对摩擦力矩的共同影响，建立了更为精确的涡轮增压器浮环轴承系统温度预测模型。在涡轮增压器浮环轴承试验台上对回油温度进行实测，并对仿真结果进行对比分析。研究结果表明：仿真所得结果与试验所测结果有较好的吻合性，证明了温度预测模型的准确性；温度和转速变化关系接近线性，温升、黏度、环速比和轴承间隙等变化均在合理范围之内，浮环轴承工作状态良好。
Abstract:Based on nonlinear dynamic oil-film forces, a more precise temperature prediction model of the floating ring bearings of a turbocharger was presented. In this model, the influences of thermal effect on oil viscosity and bearing deformation were considered, and the influences of pressure flow and shear flow on the ring speed ratio (floating ring speed to rotor spin speed ratio) were also taken into account. The oil return flow temperatures measured from experiments were compared with the simulated results. The analysis results indicate that the errors of the model are in an allowable range, verifying the effectiveness of the model. The relationship between oil temperature and rotor spin speed is nearly linear. The variations of temperature, oil viscosity, ring speed ratio and bearing clearance are in reasonable ranges. And the floating ring bearings work well. This would be theoretical foundations for the future R&D and structural optimization of the floating ring bearings.
查看全文  HTML   查看/发表评论