Page 32 - The Tyreman 2019 - 5
P. 32
local industrial news
Technical Bulletin: Brake Noise In-Depth – Causes and Prevention
One of the biggest mechanical annoyances is brake noise. What is it? Broken down into basic science, it means that under braking, some- thing is vibrating at a frequency high enough to make you notice there’s ‘noise’.
Brake Noise – Collective System Inspection
刹车噪音- - - - 集体系统检查
刹车片
检查每一个组件:刹车盘
While contact between the rotor and pad is the main instigator of brake noise, it is not the only component at fault. Bendix says low frequency oscillations from the pad and rotor travel through brake and suspension components while higher frequencies tend to remain at the pad/rotor, which leads to the passenger compart- ment, resulting in detectable noise when a natural fre- quency of the components is reached. This connected parts vibrating is the cause of the noise. Let’s check out each brake component and see how these vibrations could be reduced.
Brake Pads
Bendix explains that the friction material used in a brake pad could reduce noise in two ways. A good brake pad compound that keeps
-
tent across a range of
temperatures and envi-
ronmental condi-
tions tends to be
quieter. By main-
taining consistent
brake torque are reduced, therefore re- ducing the possibility of noise.
Some brake pads such as the Bendix General CT trans- protects the rotor surface so that under braking, there is minimum change of brake torque as pads come into
32 the tyreman 2019/5
AUTO PARTS SECTION
汽车零部件
