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Experimental Analysis of the Mechanism Causing Brake Moan Noise
Published October 03, 2012 by Society of Automotive Engineers of Japan in Japan
The development of hybrid vehicles and electric vehicles in recent years has meant a reduction of engine and other types of noise for enhanced vehicle quietness. Because ordinary customers can now more readily perceive brake squeal and other annoying noises as a result, there are greater needs to develop technologies for suppressing these various kinds of brake noise. One type of brake squeal that occurs during braking is a low-frequency noise at several hundred hertz called brake moan. It is known from experience that the tendency for brake moaning to occur varies depending on the type of suspension used even though the specifications of the braking system are the same. This study was conducted to confirm the contribution of the suspension system to brake moan noise.