| OPTIMAL DESIGN OF THE EXHAUST SYSTEM LAYOUT TO SUPPRESS THE DISCHARGE NOISE FROM AN IDLING ENGINE |
| Jeong-Guon Ih1, C.-Y. CHOI1, T.-K. KIM1, S.-H. JANG2, H.-J. KIM3 |
1KAIST
2Korea Railroad Research Institute
3Faurecia Exhaust Systems Korea |
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| ABSTRACT |
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At the idle engine speed, the exhaust discharge noise is influenced by resonances in the whole system, which is composed of connecting pipes and silencers. This pipe resonance radiates a high level of low frequency discharge noise, which is dominated by the low order harmonics of the engine firing frequency. This low frequency noise deteriorates the vehicle |
| Key Words:
Exhaust system, Idle noise, Discharge noise, Silencer, Optimal layout design |
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