Clockwise from bottom: NVH characteristics can also be evaluated in the wind tunnel hall were aero-acoustic testing is performed; driver simulation and acoustic evaluations can be


performed in the multi-functional environmental climatic chambers; acoustic testing ensures the BMW i7 has a sound profile both internally and externally that suits the vehicle occupants as well as pedestrians and other affected road


users; and the noise generated by different road surfaces and textures can be simulated using dynamometer attachments


venture between the BMW Group and Holly- wood film music composer Hans Zimmer so that the driver has a choice of characteristic silence or BMW IconicSounds Electric. The acoustic test benches at the new


branch of the BMW Group’s Research and In- novation Centre FIZ North are specially de- signed to meet the requirements of electro-mobility and enable all driving situa- tions to be simulated realistically. Any irritat- ing 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 en- able the measurement and validation of drive acoustics and tyre noise on all road surfaces that are relevant to day-to-day traffic any- where in the world. The standards that the engineers aspire to for the BMW i7 apply to acoustic comfort as





2022 /// Climatic & Vibration Testing \\\ 13


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40