关键词: 旋钮电子换挡器；P 挡锁止；P 挡解锁；噪音分析；噪音解决措施

Abstract: As the continuous reduction of vehicle background noise, the noise requirements of the electronic components in the vehicle are getting higher and higher. This paper mainly introduces the working noise of a knob electronic gear shifter of some vehicle, the article combined with the internal structure and functional principle of the electronic gear shifter, then in detail describes the problem analysis and solutions verification. Finally, the paper greatly reduces the working noise of the electronic gear shifter. The analysis method and noise improvement ideas in this paper have good guiding significance for other knob electronic gear shifters design.

Key words: Knob electronic gear shifter; P Lock; P Unlock; Noise analysis; Noise solutions