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某轻型货车变速器怠速异响问题分析与解决
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摘要
针对某轻型货车在怠速工况下变速器异响的情况,进行了噪声产生原因的机理分析。利用AMESim软件建立了该轻型货车含发动机、离合器、变速器的动力传动系统怠速模型。分析了怠速工况中离合器扭转刚度、变速器齿轮侧隙、齿轮转动惯量等主要参数对变速器内齿轮敲击力的影响。从动力总成匹配出发,比较了不同离合器扭转刚度时,发动机飞轮与变速器输入轴的转速波动率以及变速器二档空载啮合齿轮的敲击力。并通过试验验证了控制离合器扭转刚度可以改善变速器异响。
For the idling gearbox abnormal sound of certain light truck,the mechanism of noise generation is analyzed.The driveline model has been established with AMESim software,which include engine,clutch and gearbox.Analyzed the effect of clutch torsional stiffness,gear backlash and gear moment of inertia on gearbox rattle force.Starting from the matching of driveline,Compared the speed fluctuation rate of the engine flywheel and the input shaft of the gearbox with different torsional stiffness of clutch;And compared the second non- load gear rattle force.The test proved that control the torsional stiffness of clutch can improve the abnormal sound of gearbox.
引文
[1]张军锋.手动变速器齿轮敲击噪声的实验分析[D].上海:上海交通大学机械与动力工程学院,2012.
    [2]Renato Brancati,Ernesto Rocca,Riccardo Russo.An analysis of the automotive driveline dynamic behaviour focusing on the influence of the oil aqueeze effect on the idle rattle phenomenon.Journal of Sound&Vibration,2007,303,3-5,858-872.
    [3]O.Tangasawi,S.Theodossiades,H.Rahnejat.Lightly loaded lubricated impacts:Idle gear rattle.Journal of Sound&Vibration,2007,308,3-5,418-430.
    [4]冯振东.离合器从动盘扭转特性对变速器怠速噪声的影响[J].汽车技术,1989,9,6-12.
    [5]郭荣,朱伟伟.手动变速器齿轮敲击问题的影响因素分析[J].江苏大学学报,2013,34,4,378-383.

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