摘要
为了研究发动机激励对车内振动和噪声的影响,通过对某款国产乘用车进行振动和噪声测试实验,采集加速工况下的发动机悬置振动信号和车内振动与噪声信号,利用阶次分析方法对信号进行数据处理,分析车内振动和噪声产生的原因.通过计算各个悬置的隔振率,分析悬置隔振性能对车内振动和噪声的影响.结果表明,左悬置和右悬置隔振性差是引起车内振动的主要原因,后悬置振动是引起车内噪声的主要因素,发动机激励传递到悬置系统产生的振动是引起车内振动和噪声的主要原因.
In order to investigate the influence of engine excitation on the vehicle interior vibration and noise,the engine mounting vibration signals as well as the vehicle interior vibration and noise signals were acquired under the accelerated conditions through the testing experiments of vibration and noise for a certain domestic vehicle. The signal data were processed with the order analysis method,and the generation reason of vehicle interior vibration and noise was analyzed. Through calculating the vibration isolation rate of each mounting,the influence of vibration isolation performance on the vehicle interior vibration and noise were analyzed. The results show that the bad isolation performance of left and right mountings is the main reason for the vehicle interior vibration. The rear mounting vibration is the main reason for the vehicle interior noise. The vibration transmitted from engine excitation to mounting system is the main reason for the vehicle interior vibration and noise.
作者
陈克
李春萍
李孟宇
CHEN Ke;LI Chun-ping;LI Meng-yu(School of Automobiles and Transportation,Shenyang Ligong University,Shenyang 110159,China)
出处
《沈阳工业大学学报》
EI
CAS
北大核心
2019年第1期47-51,共5页
Journal of Shenyang University of Technology
基金
辽宁省科技厅自然科学基金资助项目(20180550045)
辽宁省教育厅科学研究项目(LG201618)
关键词
发动机
悬置系统
激励
隔振
车内振动
车内噪声
信号处理
阶次分析
engine
mounting system
excitation
vibration isolation
vehicle interior vibration
vehicle interior noise
signal processing
order analysis