| 基于特定挡位车速下客车异常振动原因分析 |
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| 引用本文： | 汪小朋,张代胜,刘文彬,李振远.基于特定挡位车速下客车异常振动原因分析[J].汽车技术,2011(9). |
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| 作者姓名： | 汪小朋 张代胜 刘文彬 李振远 |
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| 作者单位： | 合肥工业大学 |
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| 摘 要： | 针对某客车在5挡以70～90km/h车速行驶时发生的异常振动问题,进行了车辆前、后段底架模态分析及试验验证和道路行驶振动试验,发现后段底架固有频率恰与发动机5挡工作转速频率(40～50 Hz)相吻合是该客车产生振动的原因。采用更换变速器的方法(但匹配的主减速比不变),以期避开共振频率。试验结果表明,更换变速器后客车可以在较大范围内避开共振频率区。
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| 关 键 词： | 客车 异常振动 共振频率 |
Troubleshooting of Abnormal Vibration of Bus in Specific Gear and Speed |
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| Wang Xiaopeng,Zhang Daisheng,Liu Wenbin,Li Zhenyuan.Troubleshooting of Abnormal Vibration of Bus in Specific Gear and Speed[J].Automobile Technology,2011(9). |
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| Authors: | Wang Xiaopeng Zhang Daisheng Liu Wenbin Li Zhenyuan |
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| Institution: | Wang Xiaopeng,Zhang Daisheng,Liu Wenbin,Li Zhenyuan(Hefei University of Technology) |
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| Abstract: | To identify cause of abnormal vibration of a bus operating at 70~90 km/h at 5th gear,front and rear undercarriage modal analysis,test verification and road driving vibration test were carried out.It is found that the natural frequency of the rear undercarriage coincides with the frequency(40~50 Hz) at the 5th speed,which causes abnormal vibration of this bus.To avoid resonance frequency,a new transmission is used(whereas the drive ratio remains unchanged).Test results show that the bus with the new transmis... |
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| Keywords: | Bus Abnormal vibration Resonance frequency |
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