In our previous post, we took a look back at the history of the anti-lock brake system (ABS). In this blog, we’re going to explore how this safety feature works. Now that ABS is a standard feature on new vehicles, understanding how it works is essential to brake repair.
Let’s take a look at how anti-lock brakes work and how they affect brake repair services.
Wheel Sensors
Wheel speed sensors are the central component of ABS. They are strategically placed at each wheel of the vehicle to collect accurate data. These sensors continuously monitor the speed of the wheels, sending real-time data to a central control unit. This control unit processes the information received from the sensors and makes split-second decisions to optimize braking performance.
When a driver applies the brakes forcefully, the ABS activates to prevent the wheels from locking up. Wheel lock-up occurs when a wheel stops rotating and starts skidding, potentially leading to loss of control and longer stopping distances. The ABS employs a pulse modulator of hydraulic valves for each brake to counteract wheel lock-up.
Adjusting Brake Pressure
As the wheel speed sensors detect an impending lock-up, the control unit signals the pulse modulator to adjust brake pressure rapidly. This adjustment is achieved through a process known as “brake pulsing” or “ABS cycling,” where the system releases and reapplies brake pressure in rapid succession. The result is a controlled and precise modulation of brake force, preventing the wheels from locking up while maintaining steering control. This brake pressure adjustment happens seamlessly and continuously, occurring many times per second.
Expert Brake Repair from Redman’s Automotive
The intricate workings of ABS make brake repair more complicated than it used to be. Not only do mechanics have to ensure the brake pads, rotors, and calipers are in good condition, but they also have to ensure the wheel sensors are calibrated and communicating properly. ABS is no longer an added feature to high-end cars. It is a standard feature on all new vehicles. At Redman’s Automotive, our mechanics are familiar with the intricacies of modern vehicles, so you can always feel confident when you entrust your car to us for repairs.
