Brake squeal reduction by the design of the interface calliper - friction pads - brake shoe holder

摘要

Usually brake manufacturers reduce brake squeal by the application of noise insulators to the brake pad's backplate. In some cases it is necessary to optimise not just the parameter "damping material" but also to use specially designed noise damping shims combined with other constructional countermeasures at the interface calliper - friction pads - brake shoe holder. First some examples of current designs are given, and after that a new way to achieve a pressure point shift by using special geometries of noise insulators is introduced. Finally the noise reduction which can be achieved by this new design is illustrated by the results of the brake noise analysis carried through during the development of an application.