扭转减振器在解决车内轰鸣声中的应用
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摘要
在某款SUV开发过程中发现,6挡全油门加速时发动机转速在2 380 r/min附近,车内出现明显的轰鸣问题。通过传递路径分析和实验方法,分析了车内轰鸣声的激振源、传递路径和峰值产生机理。激振力主要来源于后桥输入端的扭转交变力矩,扭转交变力矩以轴承支反力的形式作用于后桥上并传递至车内。通过采用加装扭转减振器的方法来控制该转速下的轰鸣声。实验表明,利用其振动特性使车内后排噪声减少高达6.3 dB(A)。
A significant booming problem appears in the sixth gear at the full throttle acceleration when the engine speed is near 2 380 r/min in the development of an SUV vehicle. Through transmission path analysis and experimental method, the excitation source,transmission path and peak generating mechanism of the rumble in the vehicle are analyzed. The excitation force mainly comes from the torsional alternating moment at the input end of the rear axle. The noise under the rotating speed is controlled by adding torsion vibration damper. The experiment shows that the vibration characteristic can reduce the noise in the back of the car by up to 6.3 dB(A).
A significant booming problem appears in the sixth gear at the full throttle acceleration when the engine speed is near 2 380 r/min in the development of an SUV vehicle. Through transmission path analysis and experimental method, the excitation source,transmission path and peak generating mechanism of the rumble in the vehicle are analyzed. The excitation force mainly comes from the torsional alternating moment at the input end of the rear axle. The noise under the rotating speed is controlled by adding torsion vibration damper. The experiment shows that the vibration characteristic can reduce the noise in the back of the car by up to 6.3 dB(A).
引文
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[3]康强,吴昱东,邓江华,等.扭转减振器应用于前置后驱汽车传动系统扭振研究[J].制造业自动化,2014,36(12):92-94.
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[5]王东,闫兵,王东亮,等.汽车传动系扭振引起的车内轰鸣声控制方法[J].噪声与振动控制,2015,35(2):73-76.
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