关键词: 制动噪音；刹车异响；错开固有频率；消音片；Groan 噪音

Abstract: This paper describes the relevant mechanism of brake noise generation, research the classification of brake noise according to the frequency, and introduces the brake noise may be associated with chassis components and the typical occurrence scene of brake noise, the corresponding matching scheme is proposed. This paper according to the processing and analysis of three examples of braking noise problems, through the noise measurement, analyzes and confirms the frequency and vibration source, puts forward the optimization scheme. Through the combination of bench and real vehicle effect verification, finally effectively improve the actual braking noise problem, improve vehicle comfort, and then improve the competitiveness of automobile enterprises.

Key words: Braking noise; Brake abnormal sound; Staggered natural frequencies; Silencer; Groan noise