Experimental analysis between air intake transmission loss and powertrain NVH interior noise

Nowadays the vehicle development must be done in a reduced time and cost without compromising the quality in accordance with global standpoint strategy. In order to accomplish that, several actions would be implemented and one of them is related to components tuning, focusing a rig bench test. Through a robust rig test, acceptable results can be achieved which would provide an interesting guide to release good tuning parts for the vehicle. Among them, the proper tuning of air intake system plays an important role for powertrain NVH attribute in vehicle. Transmission loss is a property of the acoustic system, which represents the difference in the sound power level between the incident and transmitted waves and might be use as a metric to describe a general acoustic performance of it and address the component development. This paper presents an experimental analysis between air intake transmission loss yielded by a rig test and powertrain NVH interior noise.