As commercial vehicles have the reputation of being noisy, special attention has been paid to power train
booming and road noise during the development of the new Renault Master lightweight van. The large
number of variations of the van (27 in total, comprising 3 different lengths and 3 different heights) has made
the acoustic development much more complex than for a standard vehicle. By combining advanced
techniques such as Transfer Path Analysis, Airborne Source Quantification, Vibro-acoustical Modal
Analysis, Operational Deflection Shape Analysis and Forced Response calculations, the vibro-acoustical
phenomena could easily be described and changes on engine suspension, vehicle suspension and body could
be defined to improve the vibro-acoustic behavior of the vehicle.
