| 柴油机低频排气噪声规律分析 |
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| 引用本文： | 廖长武,郭文勇.柴油机低频排气噪声规律分析[J].噪声与振动控制,2002,22(2):37-38. |
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| 作者姓名： | 廖长武 郭文勇 |
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| 作者单位： | 1. 华中科技大学,武汉,430074
2. 海军工程大学,武汉,430033 |
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| 摘 要： | 针对柴油机（4－85）低频排气噪声，对其产生机理、规律及其影响因素等作了理论计算、分析及实验。对低频排气噪声信号进行频域分析后可知，其主要由一系列离散的谐波组成，是以柴油机点火频率为基频的一种类周期性噪声，有可能应用有源噪声控制技术。
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| 关 键 词： | 排气噪声 柴油机 低频噪声 频域分析 噪声控制 |
| 文章编号： | 1006-1355(2002)02-0037-02 |
| 修稿时间： | 2001年7月3日 |
An analysis on the oharacteristics of diesels low-frequency exhaust noise |
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| LIAO Zhang wu ,GUO Wen yong.An analysis on the oharacteristics of diesels low-frequency exhaust noise[J].Noise and Vibration Control,2002,22(2):37-38. |
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| Authors: | LIAO Zhang wu GUO Wen yong |
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| Affiliation: | LIAO Zhang wu 1,GUO Wen yong 2 |
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| Abstract: | The low frequency exhaust noise of a diesel(4 85),its generation,frequency characteristics and influencing factors have been studied through theoretic calculation,analysis and experiment.After the analysis of the low frequency exhaust noise,we can conclude that it is mainly composed of a series of discrete humorous waves,and it is a quasi periodic noise that its fundamental frequency is the fire frequency of a diesel,hence it can be attenuated by use of active noise control technique. |
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| Keywords: | diesel low frequency noise frequency domain analysis |
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