著者

吉川 英夫 渡辺 禎 池田 尊 三野 俊作

出版者

一般社団法人日本機械学会

雑誌

日本機械学會論文集. B編 (ISSN:03875016)

巻号頁・発行日

vol.54, no.505, pp.2670-2674, 1988-09-25

---

In this study, a test of exhaust gas noise reduction is reported through the application of a heat-resistant epoxide resin, in place of a steel motorcycle muffler of a gas engine exhaust system. The findings show that this resin muffler results in a noise reduction without decreasing the engine efficiency, even in a restricted space. The experiments were conducted using the same shape for the steel and resin mufflers which were set at the outlet of a 250 ml engine exhaust system. The noise level of the exhaust gas after being introduced into the shielding compartment was measured by a standard noise-meter and FFT analyzer for the comparison of noise reduction effect.

著者

吉川 英夫 矢部 俊康 池田 尊 三野 俊作

出版者

一般社団法人日本機械学会

雑誌

日本機械学會論文集. B編 (ISSN:03875016)

巻号頁・発行日

vol.54, no.505, pp.2675-2679, 1988-09-25

---

In this study, the exhaust gas noise reduction is reported through the application of a heat resistant epoxide resin, in place of a 1.5 L 4-cycle gas engine steel muffler. The findings show that this resin muffler of the same shape as a steel muffler results in noise reduction without decreasing the engine efficiency, even in a restricted space. Being measured by a standard noisemeter and FFT analyzer, the noise reduction effect was analyzed to have a relationship with the temperature of the muffler, and with the frequency.