| 发动机排气系统振动分析 |
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| 引用本文： | 邢素芳,王现荣,王超,郭占敏.发动机排气系统振动分析[J].河北工业大学学报,2005,34(5):109-111. |
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| 作者姓名： | 邢素芳 王现荣 王超 郭占敏 |
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| 作者单位： | 河北工业大学,机械学院,天津,300130;河北机电职业技术学院,河北,邢台,054000;长城汽车股份有限公司技术研究院,河北,保定,071000 |
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| 摘 要： | 发动机的振动和噪声特性是影响汽车行驶舒适性的主要因素.本文针对某轻型货车3缸柴油机在使用过程中排气系统发生开裂的现象,运用有限元分析与试验结合的方法进行研究.结果表明：发动机的转动频率与该排气系统的固有频率发生耦合,引起了共振.通过改进发动机与排气系统的连接方式等措施改变了排气管的固有频率,降低了振动.经样车试验得到满意的结果.
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| 关 键 词： | 排气系统 模态分析 振动 设计 |
| 文章编号： | 1007-2373(2005)05-0109-03 |
| 修稿时间： | 2005年5月12日 |
Vibration Analysis of Engine Exhaust System |
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| XING Su-fang,WANG Xian-rong,WANG Chao,GUO Zhan-min.Vibration Analysis of Engine Exhaust System[J].Journal of Hebei University of Technology,2005,34(5):109-111. |
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| Authors: | XING Su-fang WANG Xian-rong WANG Chao GUO Zhan-min |
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| Affiliation: | XING Su-fang1,WANG Xian-rong2,WANG Chao3,GUO Zhan-min3 |
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| Abstract: | Vibration and noise is a important factor for vehicle riding comfort.This paper research the exhaust rupture problem applying finite element analysis combining test method for a three-cylinder diesel engine of light truck riding sta-te.The results revealed that the natural frequency of exhaust pipe would resonate under coupling with the excitation fre-quency of engine.Finally,vibration was reduced by modifying linkage between engine and exhaust system based on changing the natural frequency of exhaust pipe.The satisfaction result is gained by testing of prototype. |
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| Keywords: | exhaust system modal analysis vibration design |
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