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本文阐述了研制汽车排气消声器的目的和意义,并在对发动机排气噪声频谱分析的基础上,设计了三种新型排气消声器。文中详细介绍了消声器的消声原理及设计要点。测试结果表明,三种消声器的消声量为18～22dB(A),且消声频带宽,排气噪声很突出的低频部分的消声量也比解放牌原消声器有显著提高,声音也获得改善,整车加速行驶车外噪声,GL—Ⅴ—5型消声器比解放牌原消声器减少7dB(A)。GL—Ⅴ—2型消声器,对发动机在各种转速下的功率提高0.83～2.43％。这种节能消声器,目前正在我省推广使用。
This article describes the purpose and significance of developing automobile exhaust muffler, and based on the spectrum analysis of engine exhaust noise, designs three kinds of new exhaust muffler. In this paper, the muffler muffler principle and design essentials are introduced in detail. The test results show that the muffler volume of the three mufflers is 18-22dB (A), and the muffler volume of the low-frequency part with the widening muffler frequency and exhaust noise is also significantly higher than that of the original muffler of Jiefangpai and the sound is also improved Vehicle speeding outside the car noise, GL-V-5 muffler than Jiefangbei original muffler to reduce 7dB (A). GL-V-2 muffler, the engine power at various speeds increased 0.83 ~ 2.43%. This energy-saving muffler is currently being promoted in our province.