車輛怠速共振測試分析與控制

doi:10.3969/j.issn.1000-1298.[year].[issue].[sequence]

首頁 > 過刊瀏覽>2009年第40卷第1期 >40-43. DOI:10.3969/j.issn.1000-1298.[year].[issue].[sequence]

車輛怠速共振測試分析與控制
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                        10.3969/j.issn.1000-1298.[year].1.[sequence]
                    
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摘要:

針對車輛怠速共振問題,，采用噪聲、振動測量技術(shù)，分析了發(fā)動機振動的傳遞途徑、聲振耦合情況，查明該車怠速共振是由于懸置系統(tǒng)對發(fā)動機橫向振動衰減不夠,，導(dǎo)致發(fā)動機二倍轉(zhuǎn)頻與車身固有頻率產(chǎn)生耦合。運用汽車動力學(xué)設(shè)計方法對原懸置系統(tǒng)重新設(shè)計,，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.車輛怠速共振測試分析與控制[J].農(nóng)業(yè)機械學(xué)報,2009,40(1):40-43.[J]. Transactions of the Chinese Society for Agricultural Machinery,2009,40(1):40-43.

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