차단력 측정이용 차량 럼블링 소음의 전달경로해석

초록

Rumbling noise generated in a car interior is a phenomenon that occurs when vibration and noise generated by the engine are transmitted to the vehicle interior. Resonance may occur in the main parts of the transmission path during the transmission of the vibration and noise, causing the rumbling noise to increase. A transmission path analysis technique has been used to identify the transmission path that causes the rumbling noise. This method measures the contact force of the mount that connects the vehicle body and the engine, based on which it analyses the transmission path. However, to measure the contact force, the engine must be separated from the vehicle body. To compensate for this shortcoming, this study proposes a method called blocked force transfer path analysis, which does not require the separation of the engine and vehicle body. The proposed method is applied to the identification of the transmission path responsible for the rumbling noise generated in a small passenger car.

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