What is the principle of an electronic handbrake?
2 Answers
Electronic handbrake works by using an electronic button control method, achieving parking brake control through the friction generated between the brake disc and brake pads. The electronic handbrake, also known as the electronic parking brake system, integrates the temporary braking during driving with the long-term braking function after parking, and realizes parking braking through electronic control technology. Emergency braking with electronic handbrake: When the vehicle cannot be stopped using the foot pedal brake, pulling the electronic handbrake switch for more than 2 seconds will activate emergency braking for the vehicle, accompanied by a warning signal. Releasing the handbrake switch or pressing the accelerator pedal will cancel the emergency braking.
I've always been fascinated by the principle of electronic parking brakes, considering them a clever design in modern cars. Simply put, they replace the old-fashioned hand lever with an electronic button. When you press the button, a signal is sent to a small electric motor, which then drives a gear or screw mechanism to directly engage the brake discs or drums on the rear wheels, locking them to prevent movement. The control unit, acting like a brain, monitors sensors to check if the vehicle is stationary and the engine is off, ensuring operation only under safe conditions. Even better, when starting the car, pressing the accelerator or shifting gears automatically releases the brake, eliminating the need for manual operation and making daily use incredibly convenient. I've also noticed that this system can integrate an automatic hold function, keeping the vehicle from rolling at red lights, enhancing driving comfort. However, electronic components may be prone to moisture or aging, so it's advisable to check the wiring and motor durability every few tens of thousands of kilometers to avoid unexpected failures.
