Brake Pads - Basic Structure and Working Principle
Brake pads (also known as brake linings) are the core safety components in an automobile's braking system. They generate resistance through friction with brake discs/drums, converting the vehicle's kinetic energy into thermal energy to achieve deceleration or braking stop. Their performance directly determines the braking effect and driving safety.
I. Basic Structure and Working Principle
1. Structural Components
Backing Plate: A metal base plate with anti-rust treatment, providing structural support for the brake pads.
Insulation Layer: Made of high-temperature resistant materials, preventing the heat generated by braking from transferring to the brake calipers and hydraulic system.
Friction Block: The core component of brake pads, pressed from friction materials and binders, directly contacting the brake disc to generate friction.
Wear Warning Device: A metal plate or electronic sensor device that emits a warning sound or illuminates the fault light on the instrument panel when the brake pads are worn to the limit.
2. Working Principle
Depress the brake pedal → The brake master cylinder pushes the brake fluid to flowHydraulic power is transmitted to the wheel brake cylinders of each wheel → The cylinder pistons push the brake pads to clamp the brake discFriction between brake pads and brake disc generates resistance → The vehicle's kinetic energy is converted into thermal energy and dissipatedRelease the brake pedal → The brake pads reset and the braking state is released
