矿卡增压器振动分析及改进  

Vibration Analysis and Improvement of Turbo charger of Mining Truck

作　　者：李会 闫利利 崔凯 马文娟 胡亮 Li Hui;Yan Lili;Cui Kai

机构地区：[1]内燃机可靠性国家重点实验室,山东省潍坊市261061 [2]潍柴动力股份有限公司

出　　处：《工程机械》2023年第7期98-103,I0012,I0013,共8页Construction Machinery and Equipment

摘　　要：涡轮增压器作为动力系统重要零部件,其振动大会造成增压器轴系磨损、擦壳等故障,严重影响增压器使用寿命与发动机工作性能。基于发动机特定工况的振动试验,可获得增压器振动的加速度。针对增压器振动超过限值情况,利用有限元分析与试验相结合的方法进行研究。分析表明,增压系统的1阶频率与试验测得共振频率相吻合,基于模态振型进行优化改进,对改进方案进行仿真分析和试验验证,结果表明,改进方案可以有效降低振动,提高发动机可靠性。As an important component of the powertrain,turbocharger's vibration can cause faults such as wear and tear of the shaft system and casing scraping,seriously affecting the service life of the turbocharger and working performance of the engine.Based on vibration tests under specific working conditions of the engine,the acceleration of turbocharger vibration is obtained.A combination of finite element analysis and tests is used to investigate the situation that turbocharger vibration exceeds the limit.The analysis shows that the st order frequency of the turbocharging system is consistent with the resonant frequency measured in the test.Optimization and improvement are carried out based on the modal vibration mode,and simulation analysis and test verification are conducted on the improvement plan.The results show that the improvement plan can effectively reduce vibration and improve reliability of the engine.

关 键 词：矿用自卸车 增压器 振动 有限元分析 

分 类 号：TD52[矿业工程—矿山机电]