| 内燃机排气消声系统声学特性的数值预测 |
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| 引用本文： | 季振林,宋希庚.内燃机排气消声系统声学特性的数值预测[J].内燃机工程,1998,19(3):7-12. |
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| 作者姓名： | 季振林 宋希庚 |
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| 作者单位： | 大连理工大学!大连市，116024(季振林)，大连理工大学(宋希庚) |
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| 摘 要： | 提出了一种有效预测内燃机排气消声系统声学特性的新方法。此方法使用传递矩阵法和边界元法计算整个排气水声系统的四极参数，使用双负载法和特征线法确定发动机的声源阻抗和强度，实现内燃机排气噪声插入损失预测。文中对一台柴油机排气消声系统进行了研究，其预测结果与实测结果吻合良好。
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| 关 键 词： | 排气 噪声 消声器 数值预测 内燃机 |
Numerical Prediction of Acoustical Characteristics of Internal Combustion Engine Exhaust Muffler System |
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| Ji Zhenlin, Song Xigeng.Numerical Prediction of Acoustical Characteristics of Internal Combustion Engine Exhaust Muffler System[J].Chinese Internal Combustion Engine Engineering,1998,19(3):7-12. |
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| Authors: | Ji Zhenlin Song Xigeng |
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| Affiliation: | Dalian University of Technoogy |
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| Abstract: | A new method for effectively predicting acoustic characteristics engine exhaust muffler system has been presented. Four -pole parameters of whole exhaust muffler system have been calculated by transfer matrix method and the boundary element method and the noise souxce impedance and strength of engine have been determined by the two load method and chateristic line method, so as to realize the .prediction of exhaust noise and insertion loss of muffler. An exhaust muffler system of a diesel engine has been used for study and its predicted results aue in good agreement with the measured ones. |
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| Keywords: | Exhaust Noise Muffler Numerical Prediction Internal Combustion Engine |
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