Assessing the Application of the Flexible Joint in the Exhaust Pipe and Braided Wire Damper in Muffler on the Sound Emitted by the CG125 Motorcycle Exhaust
| Author | Sahand Ghafori | en |
| Author | Ali Khavanin | en |
| Author | Hassan Assilean | en |
| Author | Ardalan Solimanian | en |
| Orcid | Ali Khavanin [0000-0002-1792-2488] | en |
| Issued Date | 2016-08-31 | en |
| Abstract | Background: In recent years, noise pollution has become a serious problem for residents in urban areas. Motorcycles have an important role in producing noise. Objectives: This study aimed to reduce motorcycle noise by using flexible joint in tailpipe and braided wire dumpers at its exhaust. Materials and Methods: In this study, SAE J1287 procedure was used for noise measurement of Amico CG125 motorcycle. Also, for measuring the temperature and pressure of exhausted gas, JIS B 8006 and JIS B 8007 methods were used, respectively. The instruments used for measuring noise, temperature, and pressure of exhausted gas were CEL-6X0 sound level meter, detector of exhaust gas analyzer, Pitot tube, and incline manometer, respectively. Flexible joint and braided wire damper were also prepared (Erteash Gostar Peyman Company). Results: By using this new exhaust at speed levels of 1000, 2000, 3000, 4000, and 5000 rpm, we had respectively 3.9, 6.8, 7.4, 5.6, and 5 dBA decreases in total sound level pressure. Conclusions: Use of flexible joint in the exhaust system leads to conversion of linear vibration to non-linear one, resulting in significant reduction of noise levels. | en |
| DOI | https://doi.org/10.17795/jhealthscope-24154 | en |
| Keyword | Noise | en |
| Keyword | Motorcycle | en |
| Keyword | Flexible Joint | en |
| Keyword | Motorcycle Exhaust | en |
| Keyword | RPMs | en |
| Keyword | dBA | en |
| Publisher | Brieflands | en |
| Title | Assessing the Application of the Flexible Joint in the Exhaust Pipe and Braided Wire Damper in Muffler on the Sound Emitted by the CG125 Motorcycle Exhaust | en |
| Type | Research Article | en |