How is the heat generated by brakes dissipated?

The heat generated by brakes is primarily dissipated by the metal brake drums. When brakes are engaged, the friction created between the brake pads and the metal surface of the drums generates significant heat. The metal absorbs this heat, allowing for heat dissipation over its surface area, which helps to prevent overheating of the braking system.

In addition to the thermal conductivity of the metal, the design of the brake drums often incorporates features that enhance heat dissipation, such as fins or vents that increase air circulation around the drums, allowing for more efficient cooling. This process is crucial because maintaining optimal temperatures prevents brake fade and ensures consistent braking performance.

While brake fluid does play a role in the braking system by transferring force, it is not the primary means of dissipating heat generated during braking. Cooling fans, if present, can assist in overall vehicle cooling but are not specifically designed for braking heat dissipation. Similarly, while some heat might escape into the air, the primary method of heat management in braking systems is through the physical properties of the brake drums absorbing that heat.