Engine Sound Quality in Sub-Compact Economy Vehicles: A Comparative Case Study 971977
A comparative study was undertaken to investigate engine noise in sub-compact vehicles under typical highway operating conditions.
Baseline acoustical testing was performed. Typical sound quality metrics indicated that passenger cabin noise levels and sound quality were similar among all vehicles tested. However, poorer subjective sound quality in a vehicle equipped with a 3-speed automatic transmission was related to a higher degree of perceived periodicity than in other models.
Further study of the 3-speed vehicle indicated that installing a 4-speed transmission would reduce noise more effectively than any substantial changes to the vehicle structure or engine mounting system. Damping or barrier treatments applied to the firewall or toe pan did not provide significant benefit.
Citation: Chapnik, B. and Howe, B., "Engine Sound Quality in Sub-Compact Economy Vehicles: A Comparative Case Study," SAE Technical Paper 971977, 1997, https://doi.org/10.4271/971977. Download Citation
Author(s):
Brian Chapnik, Brian Howe
Affiliated:
HGC Engineering Ltd.
Pages: 11
Event:
SAE Noise and Vibration Conference and Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Proceedings of the 1997 Noise and Vibration Conference-P-309
Related Topics:
Sound quality
Automatic transmissions
Engine mounts
Noise
Acoustics
Transmissions
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