Precondition for reaching a sufficient NVH-comfort during vehicle-development is the balancing of all contributing factors. Fig. 16 depicts the complexity of this task. There are listed the partial sources contributing to the vehicle interior noise. More detailed information are given on the partial source "drivetrain" with the corresponding single components. Following this cascading principle, a limiting value is attributed to each single component by tracing back the interior noise target. This applies for the side shaft system as well! Each development process is a joint venture of several departments of both, OEM and supplier. Precondition to hit the target is a close cooperation of all involved parties, in fact right from the start. Further simulation and testing investigations are required in order to gain a deeper knowledge of the physical characteristics in this complex NVH-systems. Only this knowledge provides a basis for reaching the targets of increasing demands in future vehicle development.
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