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Studies on an automobile muffler with the acoustic characteristic of low-pass filter and Helmholtz resonator

机译：具有低通滤波器和亥姆霍兹共振器声学特性的汽车消声器的研究

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摘要

Tail pipe is a most common structure in mufflers to silence low frequency noise from an engine for its acoustic performance of low-pass filter. Based on the typical structure, a muffler with an interconnecting hole on the tail pipe was proposed to improve its acoustic performance in the present research. Acoustic performances of the proposed muffler were studied experimentally and theoretically in frequency and time domain. It was found that the interconnecting hole enabled the proposed muffler to have a noise attenuation performance of Helmholtz resonator. So the proposed muffler can attenuate the noise of low frequency and middle frequency at the same time. The frequency equation of this structure was derived using the acoustic-electronic analogy. It is useful for estimating the attenuation performance at the stages of predesign or tuning. The influence of structure parameters of the proposed muffler on its acoustic performance was studied. According to the results, the design guideline of this muffler was concluded in the present research.
机译：尾管是消音器中最常见的结构，用于降低发动机的低频噪音，以降低其低通滤波器的声学性能。基于典型的结构，提出了一种在尾管上带有连通孔的消声器，以改善其声学性能。在频域和时域上对理论上的消声器的声学性能进行了实验和理论研究。发现互连孔使所提出的消声器具有亥姆霍兹谐振器的噪声衰减性能。因此，所提出的消声器可以同时衰减低频和中频噪声。这种结构的频率方程是使用声电子类比推导的。对于在预设计或调整阶段评估衰减性能很有用。研究了所提出的消声器的结构参数对其声学性能的影响。根据结果​​，本研究得出了该消声器的设计指南。

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  • 来源
    《Applied Acoustics》 |2013年第1期|49-57|共9页
  • 作者

    Takashi Yasuda; Chaoqun Wu; Noritoshi Nakagawa; Kazuteru Nagamura;

  • 作者单位

    Hirotec Corporation, 2029-5 Kuchi, Asa-cho, Asakita-ku, Hiroshima 731-3393, Japan,Graduate School of Engineering, Hiroshima University, 1-4-1, Kagamiyama, Higashi-Hiroshima 739-8527, Japan;

    School of Mechanical and Electronic Engineering, Wuhan University of Technology, No. 122 Luoshi Road, Wuhan 430070, China;

    Department of Integrated Engineering, Faculty of Engineering, Hiroshima Kokusai Cakuin University, 6-20-1, Nakano Aki-ku, Hiroshima 739-0321, Japan;

    Graduate School of Engineering, Hiroshima University, 1-4-1, Kagamiyama, Higashi-Hiroshima 739-8527, Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    muffler; tailpipe; low-pass filter; helmholtz resonator; interconnecting hole;

    机译：围巾;排气管低通滤波器;亥姆霍兹谐振器;互连孔;

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