2004•The Proceedings of Conference of Kansai BranchOpen access

111 Study on characteristics of noise reduction of perforated-plug muffler

Gaku Minorikawa, Mituo Iwahara, Kunihiro YOSHIDA, Toshitsugu Sase

Abstract

This paper deals with the characteristic of noise reduction of perforated-plug muffler. The perforated-plug muffler is a kind of reactive silencer. Attenuating noise by a pipe with a closed end and a perforated surface inserted into an expansion chamber. This research investigated about the influence the various sizes of thin perforated-plug muffler affect a sound-damping characteristic. And tried to establish the design technique of a thin perforated-plug muffler.

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Key concepts: Muffler, Spark plug, Silencer, Acoustics, Noise (video), Noise reduction, Reduction (mathematics), Insertion loss