摘要
为了降低某款轿车排气噪声,采取增加玻璃棉、调整消声器内部管路和隔板的穿孔率与穿孔位置等措施,提升消声器的降噪性能,并利用GT-Power软件分析其传递损失。经试验验证,改进消声器后,车内噪声最大降低4 d B(A),尾管噪声实现全转速段降低。
In order to reduce exhaust system noise of a ear, the authors adopt measures, including increasing the glass wool, adjusting perforation rate and hole position of muffler inner pipes and baffles to improve muffler＇s noise reduetion performance, and analyze the transmission loss by GT-Power software. The test verifies that the interior noise is reduced by 4 dB （A） maximum and the tail pipe noise is reduced in full speeds for the improved muffler.
出处
《客车技术与研究》
2015年第6期20-23,43,共5页
Bus & Coach Technology and Research
