NVH-Development of Electric Powertrains - CAE-Methods and NVH-Criteria

Paper #:
  • 2014-01-2072

Published:
  • 2014-06-30
Citation:
Meier, C., Lieske, D., and Bikker, S., "NVH-Development of Electric Powertrains - CAE-Methods and NVH-Criteria," SAE Technical Paper 2014-01-2072, 2014, https://doi.org/10.4271/2014-01-2072.
Pages:
4
Abstract:
Electric cars are getting popular more and more and the expectations of the customers are very challenging. Concerning comfort, the situation is clear: customers want an electric car to be quiet and without any annoying noise from the powertrain.To develop an electric powertrain with a minimum noise level and minimized whining it is necessary to have an accurate CAE-simulation and precise criteria to assess whining noise. Based on the experience with electric powertrains in research cars the CAE-modelling was improved and a new ‘whining intensity factor’ was acquired for the development of Daimler's electric cars.The results are a very low noise level and a minimized whining noise, nearly not noticeable giving a comfortable sound to the customers of the smart electric drive and the B-Class Electric Drive.
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