Study of Installation Effects on Automotive Cooling Fan Noise 2022-01-0935
Vehicle electrification is one of the biggest trends in the automotive industry. Without the presence of combustion engine, which is the main noise source on conventional vehicles, noise from other components becomes more perceivable; among these components, the cooling fan is one of the major noise sources, especially during battery charging. The design of cooling fan modules is usually carried out in the early stage before building prototype vehicles. Therefore, understanding the installation effects of the cooling fan on the radiated sound is essential to secure good customer satisfaction. In this study, three different measurement setups of cooling fans are carried out: free field, wall mounted, and in-vehicle measurement. Four cooling fan prototypes with different fan blade designs are used in each measurement. Correlations of these measurements are investigated through comparisons of the measurement results. The installation effects are identified through spectrum difference between free field and in-vehicle measurement. A spectral decomposition method is implemented to enable the separation of source strength and propagation effect in the results. One variable is introduced to represent the installation effects of vehicles tested in the present study.
Citation: Lai, Y., Weng, C., Lu, Y., Karlsson, M. et al., "Study of Installation Effects on Automotive Cooling Fan Noise," SAE Int. J. Adv. & Curr. Prac. in Mobility 5(2):803-809, 2023, https://doi.org/10.4271/2022-01-0935. Download Citation
Author(s):
Yidan Lai, Chenyang Weng, Yu-Yu Lu, Mikael Karlsson, Mats Abom, Magnus Knutsson
Affiliated:
Volvo Cars, KTH Royal Institute of Technology
Pages: 7
Event:
12th International Styrian Noise, Vibration & Harshness Congress: The European Automotive Noise Conference
e-ISSN:
2641-9645
Also in:
SAE International Journal of Advances and Current Practices in Mobility-V132-99EJ
Related Topics:
Fans
Electric vehicles
Noise
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