Optimization of an FCEV Air Exhaust System for Flow-Induced Noise Reduction and Cost Efficiency
- Delivery
- Available on this site
- Format
- Price
- Non-members (tax incl.)：￥1,100 Members (tax incl.)：￥880
- Publication code
- 20266338
- Paper/Info type
- Proceedings (Autumn)
No.162-26
- Pages
- 1-6(Total 6 p)
- Date of publication
- Oct 2026
- Publisher
- JSAE
- Language
- English
- Event
- 2026 JSAE Annual Congress (Autumn)
Detailed Information
| Author(J) | 1) Jong Yeol Lee, 2) Seung Tae Gong, 3) Jong Seung Won, 4) Hyun Soo Kim, 5) Joon Ho Jang |
|---|---|
| Author(E) | 1) Jong Yeol Lee, 2) Seung Tae Gong, 3) Jong Seung Won, 4) Hyun Soo Kim, 5) Joon Ho Jang |
| Affiliation(J) | 1) Hyundai Motor, 2) Hyundai Motor, 3) Hyundai Motor, 4) SJG SEJONG, 5) SJG SEJONG |
| Affiliation(E) | 1) Hyundai Motor, 2) Hyundai Motor, 3) Hyundai Motor, 4) SJG SEJONG, 5) SJG SEJONG |
| Abstract(E) | This study investigates an optimized air exhaust silencer for a fuel cell electric vehicle to reduce flow-induced noise while improving cost efficiency. Vehicle tests identified discharge noise in the 1-3 kHz range as the primary NVH issue, originating from APC valve-induced turbulence and structural limitations of the production silencer. To mitigate this, the noise attenuation zone was relocated forward and a Helmholtz resonator-based concept was applied. Transmission loss analysis showed that the optimal design achieved up to 16.6 dB improvement in TL RMS, maintained approximately 90% gas-liquid separation, and reduced dependence on absorptive materials. |
