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汽車(chē)消聲器多工況綜合性能的評(píng)價(jià)方
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Method of Vehicle Muffler's Comprehensive Performance under Multiple Working Conditions
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    摘要:

    定義了一種對(duì)消聲器多工況下加權(quán)插入損失、背壓系數(shù)、線性度系數(shù)進(jìn)行綜合量化的評(píng)價(jià)函數(shù)，以反映消聲器在各個(gè)主要工況下的消聲效果、空氣動(dòng)力性能以及聲品質(zhì)特征。以GT-Power軟件為工具，計(jì)算了3種不同消聲器的評(píng)價(jià)函數(shù)，并與實(shí)驗(yàn)結(jié)果進(jìn)行對(duì)比。結(jié)果表明，該評(píng)價(jià)方法可以很好地反映消聲器在多個(gè)工況下的綜合性能，為消聲器的匹配設(shè)計(jì)提供依據(jù)。

    Abstract:

    An evaluation function of muffler was defined to describe the weighted insert loss, exhaust back pressure coefficient and linearity coefficient in a comprehensive quantitative way, so as to analyze sound reduction effect, aerodynamic performance, as well as sound quality characteristics of the muffler in multiple working conditions. The evaluating functions of three different mufflers were computed by simulation with GT-Power and experiment tests. The comparison shows that the evaluation method could describe the comprehensive property of a muffler under multiple conditions, which could be used in muffler's matching design.

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夏珩,鄭四發(fā),郝鵬,連小珉.汽車(chē)消聲器多工況綜合性能的評(píng)價(jià)方[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2009,40(4):33-37. Method of Vehicle Muffler's Comprehensive Performance under Multiple Working Conditions[J]. Transactions of the Chinese Society for Agricultural Machinery,2009,40(4):33-37.

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