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車(chē)輛怠速共振測(cè)試分析與控制
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    摘要:

    針對(duì)車(chē)輛怠速共振問(wèn)題，采用噪聲,、振動(dòng)測(cè)量技術(shù),，分析了發(fā)動(dòng)機(jī)振動(dòng)的傳遞途徑,、聲振耦合情況,，查明該車(chē)怠速共振是由于懸置系統(tǒng)對(duì)發(fā)動(dòng)機(jī)橫向振動(dòng)衰減不夠，導(dǎo)致發(fā)動(dòng)機(jī)二倍轉(zhuǎn)頻與車(chē)身固有頻率產(chǎn)生耦合,。運(yùn)用汽車(chē)動(dòng)力學(xué)設(shè)計(jì)方法對(duì)原懸置系統(tǒng)重新設(shè)計(jì),，改變了懸置剛度及懸置系統(tǒng)固有頻率，提高了隔振性能,，有效地控制了怠速共振現(xiàn)象,，提高了乘座的舒適性。

    Abstract:

    This paper focuses on the idling resonance problem of a certain kind of vehicle. Based on the noise and vibration measurement technology, the three dimensional vibration transmission path and vibration sound coupling in the vehicle were analyzed. The reason of idling resonance was that engine lateral vibration was not reduced adequately by the mounting system, which caused the frequency coupling between the engine’s twice rotational frequency and the frame natural frequency. Optimizing the design of mounting system, the mounting rigidity and natural frequency of mounting system were changed.Vibration isolation performance was enhanced so as to improve the ride comfort of the vehicle.

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賈繼德,陳劍,高群欽.車(chē)輛怠速共振測(cè)試分析與控制[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2009,40(1):40-43.[J]. Transactions of the Chinese Society for Agricultural Machinery,2009,40(1):40-43.

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