关键词: 新能源汽车；减振橡胶件；异响；传递路径；数字信号处理技术

Abstract: With the significant reduction in operating noise of powertrains in new energy vehicles (including hybrid, extended-range, and pure electric types), the abnormal noise issue of vibrationdamping rubber components has become increasingly prominent in such vehicles. Through longterm research, a set of mechanism analysis and test verification methods for the abnormal noise of vibration-damping rubber components has been summarized. The process is as follows: first, collect the original signals under abnormal noise road conditions on the entire vehicle, then analyze the abnormal noise transmission path, and subsequently use digital signal processing and high-pass filtering technology to convert these signals into bench simulation test conditions. This enables the reproduction of abnormal noise phenomena consistent with those on the entire vehicle, thereby accurately identifying the root cause of abnormal noise and formulating solutions. This research integrates theoretical analysis and measured data, providing practical theoretical guidance for solving the abnormal noise problem of vibration-damping rubber components in new energy vehicles.

Key words: new energy vehicle; vibration-damping rubber component; abnormal noise; transmission path; digital signal processing technology