The impact of active components wear on psychoacoustic parameters of noise in a car cabin

The automotive industry is undergoing an electromobility revolution. Changing a car's drive unit influences the vibroacoustics of a car's interior. Drive-train noise at low car speeds and in the low-frequency range is no longer dominant. There is no masking effect due to the noise of the combustion engine, and a passenger paradoxically may perceive the noise of a car as less pleasant. Moreover, existing vibroacoustic requirements have to some extent taken into account the change in the noise of components with the usage time, but there are still areas that require further research. This paper focuses on the study of electric adjustable seats, power windows and power exterior mirrors in different wear states, to determine the significant psychoacoustics changes of the selected car component's noises. The study is part of extensive research that aims to revise the current vibroacoustic requirements for new components and to determine how they could be tested and evaluated.