The acoustic test benches at the new branch of the BMW Group’s Research and Innovation Centre FIZ North are specially designed to meet the requirements of electromobility and enable all driving situations to be simulated realistically. Here, any irritating noises registered by development engineers during test drives on the road can be recreated and selectively eliminated. Roller dynamometers with a unique quiescent level and interchangeable surface coverings enable the measurement and validation of drive acoustics and tyre noise on all road surfaces that are relevant to day-to-day traffic anywhere in the world.
Optimize noise insulation aero acoustics and vibration comfort in order to ensure the best possible comfort ever realized in a bmw the new bmw i7 is undergoing a diverse range of tests in the bmw groups laboratories and on its test benches the testing program is also designed to ensure electromagnetic compatibility the bmw i7 is being developed with the aim of
Combining hallmark driving pleasure with a level of comfort that is in a class of its own one key factor here is the acoustic properties the level of well-being in the interior of the purely electrically powered luxury sedan is largely determined by the degree to which disturbing noises can be kept away from the occupants there are a variety of potential noise
Sources to be taken into account here so near production prototypes of the bmw i7 and indeed all other model variants of the future bmw 7 series undergo an extensive program as part of their acoustic testing at the research and innovation center in munich test and development engineers check the full range of the vehicle’s sound emissions and emissions motor and
Rolling noise are analyzed in detail as are the aero acoustics and vibration comfort in order to fully determine the acoustic properties of the new luxury sedans this also includes precise alignment of acoustic pedestrian protection and the motor sound emitted in the interior of the bmw i7 the latter having been developed as part of bmw iconic sounds electric a
Collaborative venture between the bmw group and hollywood film music composer hans zimmer the acoustic test benches at the new branch of the bmw groups research and innovation center fiz north are specially designed to meet the requirements of electro mobility and enable all driving situations to be simulated realistically here any irritating noises registered
By development engineers during test drives on the road can be recreated and selectively eliminated roller dynamometers with a unique quiescent level and interchangeable surface coverings enable the measurement and validation of drive acoustics and tire noise on all road surfaces that are relevant to day-to-day traffic anywhere in the world the bmw i7 aspires
To redefine the high standards of the luxury segment and this very much applies to acoustic comfort as well great importance was attached to noiseless power delivery of the electric motor contributing factors here include acoustic optimization of the electric drive units a model specific mount concept and a newly developed noise encapsulation for the electric
Motors taken together these measures enable the bmw i7 to achieve effective acoustic decoupling across a wide frequency range thereby ensuring maximum acoustic comfort in the interior in all driving situations as a result the driver of the purely electrically powered luxury sedan always has the choice of enjoying either the characteristic silence of the motor or
The emotionally powerful bmw iconic sounds electric developed in collaboration with hans zimmer increased body rigidity at the front and in tires with a foam absorber on the inside for integrated noise insulation likewise help raise the acoustic and vibration comfort of the new luxury sedans to an outstanding level so foreign okay oh huh okay okay hey so you
Transcribed from video
2023 BMW i7 – Acoustic Testing in Munich By AUTO TV