Technical Paper
A Method to Capture and Analyze Brake Dynamic Drag
2021-09-22
2021-26-0477
At present, all automobile manufacturers are fighting climate change through various emission reduction approach. In vehicle Brake system, one of the major factor which contributes to vehicle tail pipe emission in residual brake drag. A residual brake drag shall be defined as the resistance torque produced by brake in brake released condition. In Caliper brake assemblies which is a commonly used foundation brake, to reduce residual drag, low drag caliper is used. Low drag in caliper is achieved using positive retraction clip and increased caliper piston seal roll back. In general residual drag is measured in static test condition and there is no standard test procedure to assess residual drag in dynamic condition. Vehicle manufactures pays higher price for this low drag caliper owing to its benefit towards vehicle emission reduction.