A New Evaluation Approach for NVH Efficiency of E-Drive Encapsulations

2024-01-2955

06/12/2024

Event
13th International Styrian Noise, Vibration & Harshness Congress: The European Automotive Noise Conference
Authors Abstract
Content
Encapsulations of E-drive systems are gaining importance in electric mobility, since they are a simple measure to improve the noise behavior of the drive.
Current experimental evaluation methods, however, pose substantial challenges for the test personnel and are associated with considerable effort in both time and cost. Evaluating the encapsulation on an e-drive test bed, for example, requires a functional e-drive and test bed resources. Evaluations in the vehicle on the other hand make objective assessments difficult and are subject to increasingly limited availability of prototype vehicles fit for NVH testing.
To overcome these challenges, AVL has developed a new experimental evaluation method for the NVH efficiency of e-drive encapsulations.
In this method, the e-drive is freely suspended in a semi-anechoic chamber and its structure is excited using shakers while the radiated noise with and without encapsulation is measured. The NVH efficiency of the encapsulation is evaluated by analyzing the respective transfer functions using simple computational methods. This approach is particularly suitable for conducting initial development iterations or for benchmarking.
Meta TagsDetails
DOI
https://doi.org/10.4271/2024-01-2955
Pages
11
Citation
Schecker, D., Uerlings, P., Gojo, J., and Graf, B., "A New Evaluation Approach for NVH Efficiency of E-Drive Encapsulations," SAE Technical Paper 2024-01-2955, 2024, https://doi.org/10.4271/2024-01-2955.
Additional Details
Publisher
Published
Jun 12
Product Code
2024-01-2955
Content Type
Technical Paper
Language
English