This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Empirical Noise Model for Power Train Noise in a Passenger Vehicle
Technical Paper
1999-01-1757
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Power train noise reaches the interior through structureborne paths and through airborne transmission of engine casing noise. To determine transfer functions from vibration to interior noise a shaker was attached at the engine attachment points, with the engine removed. A simple engine noise simulator, with loudspeaker cones on its faces, was placed in the engine compartment to measure airborne transfer functions to interior noise. Empirical noise estimates, based on the incoherent sum of contributions for individual source terms times the appropriate transfer function, compared remarkably well with measured levels obtained from dynomometer tests. Airborne transmission dominates above 1.5kHz. At lower frequencies engine casing radiation and vibration contributions are comparable.
Recommended Content
Authors
Citation
Bocksch, R., Schneider, G., Moore, J., and Ver, I., "Empirical Noise Model for Power Train Noise in a Passenger Vehicle," SAE Technical Paper 1999-01-1757, 1999, https://doi.org/10.4271/1999-01-1757.Also In
References
- Moore, J. Moeller, M. Lee., J. Tsou, P. “Contributions due to Airborne Transmission in Passenger Vehicles,” Proc. Noise-Con 98 Ypsilanti, MI April 1998 509 514
- Her, J.Y. Lian, M. Lee, J. Moore, J. “Experimental Assessment of Wind Noise Contributors to Interior Noise,” Proceedings of the 1997 Noise and Vibration Conference , SAE- 971922 1 427