基于CAE分析的发动机共振问题研究  

Research on Engine Resonance Based on CAE Analysis

作　　者：李壮[1] LI Zhuang(Guangxi Yuchai Machinery Group Co.,Ltd.,Nanning 530007,China)

机构地区：[1]广西玉柴机器股份有限公司,广西南宁530007

出　　处：《装备制造技术》2021年第3期156-159,共4页Equipment Manufacturing Technology

摘　　要：为解决柴油发动机振动超标问题,分析发动机中的零部件及安装支架等固有频率的同时,需分析发动机总成固有频率在发动机运行过程中产生的影响,采用CAE分析软件对几种设计方案进行计算分析。计算结果发现改变整机设计结构,可以提升发动机总成的固有频率,避免发动机常用转速运行过程中产生共振,改善NVH水平。In order to solve the problem of excessive vibration of diesel engine,analysis of the natural frequency of the engine parts and mounting bracket is needed,At the same time,the analysis the influence of natural frequency of the whole engine assembly in the process of engine operation is needed too,uses CAE software to calculate and analyze several design schemes.The calculation results show that changing the design structure of the whole engine can improve the natural frequency of the powertrain,avoid the resonance in the process of common engine speed operation,and improve the NVH level.

关 键 词：柴油发动机 NVH CAE 

分 类 号：TK428[动力工程及工程热物理—动力机械及工程]