Vibracoustic NVH solutions make electric mobility more comfortable

Darmstadt, 07 May 2019 | Electric mobility is here to stay, there seems to be no doubt about it. The announcements of the last few months show that the big car manufacturers are electrifying a large part of their vehicle fleet within the next couple of years. The focus of the public discussions tends to be on mileage and all-day usability. However, the electrification of the drive train also affects the comfort and ride experience of the passengers. Vibracoustic, a leading supplier for NVH (Noise, Vibration and Harshness) solutions, develops new technologies to ensure a comfortable, relaxed and safe travel also in electric vehicles.

No more shaking on start-up of the vehicle, no revving of the engine or monotonous humming during a long freeway drive. Noise and vibration that drivers currently regard as perfectly normal are suddenly a thing of the past in an electric vehicle but previously unheard noises and vibrations become prominent. At the same time, an electric motor creates vibrations in a completely different frequency range that is more unpleasant for the passengers. Whereas a combustion engine produces vibrations mainly between 20 and 400 Hz, an electric engine can produce vibrations of over 10,000 Hz.

“This creates new challenges in the development of electric vehicles, as comfort demands and expectations will increase further. We support OEMs in identifying and solving these new challenges to secure a comfortable and safe ride, no matter what drives the vehicle,“ says Frank Mueller, CEO of the Vibracoustic AG.

The company’s portfolio of innovative NVH solutions includes e.g. specially developed motor mounts and dampers. These are tuned to address and dampen the high frequency excitations of the electric motor in order to minimize the impact on the passengers. On the chassis side, highly robust chassis mounts address the additional weight and therewith higher loads on the chassis of electric vehicles.

Air springs not only increase driving comfort and driving dynamics, but they also allow to lower the car at high speeds to improve the aerodynamics and thus increase range. Furthermore, this technology can optimize the airflow under the car for better passive battery cooling. When parking, the air springs can also automatically heighten the car to allow enough space between the potential dry surface and the battery packs for safety reasons.

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Battery Electric Vehicle with Vibracoustic NVH Solutions
Frank Mueller, CEO of the Vibracoustic AG
Vibracoustic innovative switchable three chamber air springs