Methodology to determine component shell noise targets of vehicle induction systems
by Saeed J. Siavoshani, Dale W. Converse
International Journal of Vehicle Noise and Vibration (IJVNV), Vol. 2, No. 2, 2006

Abstract: This paper describes a study that utilises transfer path analysis to quantify the shell noise contribution of a production air cleaner and compares the results to a prototype air cleaner with different surface characteristics. This technique utilises the surface velocity of the intake manifold and air cleaner and the transfer function of both components to predict the sound at the driver's ear. A noise source (speaker) is used to excite the air cleaner to obtain this transfer function. The operational surface velocity of the air cleaner is then obtained by driving the vehicle on a chassis roll (or road). The results obtained from the transfer function and the chassis roll are combined to determine the shell noise contribution of the air cleaner at the driver's ear during vehicle operation.

Online publication date: Thu, 05-Oct-2006

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