University of Twente Student Theses


Acoustic and vibration analysis of an electric powertrain for passenger cars

Spanjer, S.T. (2019) Acoustic and vibration analysis of an electric powertrain for passenger cars.

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Embargo date:17 September 2023
Abstract:The eAxle is the modular electric powertrain solution for passenger cars from Bosch. The eAxle consists of an electromotor, power electronics and a gearbox. To make these eAxles competitive with other suppliers and to meet market demands high requirements on the noise radiation of the eAxle are set. To full fill these requirements in terms of structural vibrations and noise radiation, while maintaining low weight, high performance and cooling capacity, targeted measures should be taken to reduce the level of vibrations in the system. In this report first several of the more dominant noise sources in eAxle like systems are discussed together with their frequency domain characteristics. In the second part of the report a set of measurements is described which could be used to identify and quantify the vibrations and noise radiation of the eAxle. Knowledge about the cause and the severity of the vibrations could be used to determine the most optimal measures that could be taken to meet the requirements
Item Type:Essay (Master)
Bosch, Powertrain Solutions, Germany
Faculty:ET: Engineering Technology
Subject:52 mechanical engineering
Programme:Mechanical Engineering MSc (60439)
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