The brake dynamometer system is used to evaluate the thermodynamic characteristics of brake pad materials and compounds. Students will also study methods used to reduce the temperatures of the brake rotors and brake calipers. The lab consists of an electric motor used to spin a mounted brake rotor at variable RPMs. A brake master cylinder is used to supply a hydraulic pressure to the brake caliper and load the brake pad to the spinning rotor. Efficiency is measured by comparing brake temperatures to the amount of brake torque being supplied. The math formulas (Pascals Law) used to calculate the hydraulic brake load is detailed in this laboratory experiment.
The laboratory experiment includes an electric variable speed motor to drive the brake rotor. A complete automotive style brake system. Temperature and torque sensors to measure brake pad performance. Labview software is used to display and store the data.