汽车发动机怠速抖动机理研究.pdf

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第 22 卷第 2 期公路交通科技 Vol 22 No 2
2005 年 2 月 Journal of Highway and Transportation Research and Development Feb 2005
文章编号: 1002 0268 (2005) 02 0135 03
汽车发动机怠速抖动机理研究
姚嘉伶, 蔡伟义, 闵永军
ΟΟ(南京林业大学, 江苏南京 210037)
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摘要: 汽车发动机怠速抖动是实际运用中的一个难题。讨论了发动机机体正常振动时的激振源和振动形式, 并运用机
械振动理论, 研究了怠速抖动时它们的变化。指出, 由于发动机的各种故障会引起个别气缸气体作用力减小, 导致总
的反倒力矩平衡性恶化, 致使发动机横向摆动加大, 出现怠速抖动。对发动机进行了振动试验, 验证了结论。为解决
发动机怠速抖动问题及改进设计提供了理论指导。
关键词: 发动机; 怠速抖动; 反倒力矩
中图分类号: U464 11 文献标识码: A
Studie s on Automobile Engine Idle Wobbling Mechanism
YAO Jia ling , CHAI Wei yi , MIN Yong jun
(Nanjing Forestry University , Jiangsu Nanjing 210037 , China)
Abstract : Idling engine wobble is a trouble in applications of automobile The paper discusses the exciting vibration sources and forms
while engine normal vibrating , and studies how they change when idling engine is wobbling by means of mechanic vibration theory It is
pointed that engine’s various faults can make the gas acting pressure lower in individual cylinders , resulting in the unbalance of gross
overturn moment , with more engine side vibration , es idling engine wobble An engine is tested and the test results validate the
conclusions that offer a theoretical guidance for solving idling engine wobble and improvingengine’s design
Key words : Engine ; Idling wobble ; Overturn moment
统,循序渐进地排查故障,费工费时