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Target Development for Transmission and Electric Motor NVH
Technical Paper
2019-01-1554
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
It is a common practice to conduct NVH fingerprinting and benchmarking assessments at the powertrain level, to understand source level noise and vibration. To assess the NVH influence of engine, e-motor, and transmission, sub-system testing is often conducted in addition to full powertrain testing. These powertrain or sub-system investigations provide valuable information regarding the status of “source” level excitations relative to targets and / or competitive powertrains. In the case of transmissions and e-machines, it is particularly important to understand source level tonal content and how this will be perceived at the vehicle level. However, variation in component design results in differences in order content, which complicates the process of objectively comparing multiple products.
Multiple methods are presented here for characterizing tonal content of transmission and e-machines, based on assessments conducted in a component hemi-anechoic dynamometer test cell. Ultimately, sound quality is assessed by the customer at the vehicle level. Accordingly, the methods developed incorporate means of cascading results between component level and vehicle level. Furthermore, since the perception of tonal noise content is dependent upon the masking noise present, approaches for development of masking surfaces are developed for both component-level and vehicle-level assessments.
With the information provided by these methods, educated decisions can be made regarding plans for mitigation of source NVH issues early in the development process.
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Authors
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Citation
Tousignant, T., Ford, A., Govindswamy, K., Dech, J. et al., "Target Development for Transmission and Electric Motor NVH," SAE Technical Paper 2019-01-1554, 2019, https://doi.org/10.4271/2019-01-1554.Also In
References
- Stout , J. Powerplant NVH Benchmarking SAE Technical Paper 2011-01-1500 2011 10.4271/2011-01-1500
- Stout , J. , Solferino , V. , and Antonov , S. Powerplant NVH Decision Making Using Combined Airborne and Structureborne Noise Sources SAE Int. J. Engines 8 4 1953 1959 2015
- Govindswamy , K. , Wolff , K. , and Heuer , S. Aspects of Powertrain Noise with Special Emphasis on Impulsive Noise SAE Technical Paper 2007-01-2411 2007 10.4271/2007-01-2411
- Eisele , G. and Pichot , F. NVH Refinement of Diesel Powered Sedans with Special Emphasis on Diesel Clatter Noise and Powertrain Harshness SAE Technical Paper 2007-01-2378 2007 10.4271/2007-01-2378
- Tousignant , T. , Govindswamy , K. , Tomazic , D. , Eisele , G. et al. NVH Target Cascading from Customer Interface to Vehicle Subsystems SAE Technical Paper 2013-01-1980 2013 10.4271/2013-01-1980
- Tousignant , T. , Govindswamy , K. , Stickler , M. , and Lee , M. Vehicle NVH Evaluations and NVH Target Cascading Considerations for Hybrid Electric Vehicles SAE Technical Paper 2015-01-2362 2015 10.4271/2015-01-2362
- Parbat , A. , Tousignant , T. , and Govindswamy , K. Powertrain Level Target Setting for Impulsive Noise Based on Interior Noise Levels SAE Technical Paper 2015-01-2295 2015 10.4271/2015-01-2295
- Tousignant , T. , Govindswamy , K. , and Leibling , C. Evaluation of Source and Path Contributions to Sound Quality Using Vehicle Interior Noise Simulation SAE Technical Paper 2011-01-1685 2011 10.4271/2011-01-1685