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Pass-by-Noise Development for Trucks Considering Cooling and Airflow Management
Technical Paper
2001-01-3849
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The work carried out with external noise insulation has been demanding high importance in vehicle concept since the second External Noise Regulation in Brazil (Conama 001/ 1993). The engineering effort shall increase significantly for near future developments due to the new Regulation (Conama 272 / 2000) with more stringent limits.
The effect over vehicle systems beyond noise requirements is not restricted to the addition of shields and insulators. The airflow restriction created by the noise shields surfaces may become a huge cooling issue. This situation is usually observed on trucks designed for tropical markets and submitted to severe environments.
Lessons learned in a current development are the basis of the proposed methodology. Vehicle and lab sound intensity noise source ranking tests are suggested as development tools. The paper also presents a pass-by-noise development strategy that includes CAE airflow and cooling management tools. Finally, an optimized development work plan is proposed and commented.
Authors
Citation
Pinto, M., Costa, E., and Mattos, M., "Pass-by-Noise Development for Trucks Considering Cooling and Airflow Management," SAE Technical Paper 2001-01-3849, 2001, https://doi.org/10.4271/2001-01-3849.Also In
References
- FAHY, F.J. Sound Intensity E&FN Spon Ltd London 1995
- Brasileira Norma
- Davis, Frank V. Veling, Thomas R. Caltrider, Julia L. Madhavar, Ranganathan “Impact of Computer Aided Engineeering on Ford Motor Company Light Truck Cooling Design and Development Processes” SAE Paper 932977 -International Truck and Bus Meeting and Exposition Detroit, Michigan November 1-4 1993