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Transfer path analysis of powertrain vibration on driver's noise

On the basis of Transfer Path Analysis (TPA) method, the driver's noise which was caused by powertrain excitation was taking under the problematic condition. The method and procedure of TPA were studied using LMS/TPA software. The dominant transfer path which has influence on the driver's noise was identified. The results show that the rear mount excitation of the powertrain influences the driver side noise most. In order to ameliorate ride comfort, the isolation performances of the rear powertrain mount needs to be improved. The amplitude of every transfer path's partial contribution is identified and the phase relation among each contribution's amplitude is found. This paper provides a base for the design of powertrain mounts.