Hyundai Motor Group Releases Video Explaining Brake System
Hyundai Motor Group is supporting safe driving with advanced safety assistance technologies designed to reduce pedal misapplication accidents.
On September 22, Hyundai Motor Group released a technology explanation video to help the public accurately understand how the brake system works and to use it with confidence.
The brake system demonstrated in the video shows that when the driver presses the brake pedal, the force is amplified through a vacuum booster, then passes through the master cylinder and is converted into hydraulic pressure. This hydraulic pressure travels through the brake tubes to the calipers on each wheel, pressing the brake pads against the disc rotors to decelerate or stop the vehicle.
Recently, especially in electric vehicles, Hyundai Motor Group has been applying an Integrated Electric Booster (IEB) in place of the traditional vacuum booster. When the driver presses the brake pedal, the electric motor amplifies this force into the hydraulic pressure needed for braking.
Regardless of the type of booster, the brake system is designed independently from the vehicle’s powertrain, and the brake pedal is mechanically linked to each wheel’s caliper. According to a Hyundai Motor Group representative, even if there is a problem with the booster, sufficient braking force can be secured by pressing the brake pedal harder than usual.
Additionally, Hyundai Motor Group has enhanced braking safety by adding a 'brake override' function, which prioritizes the brake signal when both the accelerator and brake pedals are pressed simultaneously.
Furthermore, the company has newly applied advanced safety assistance technologies that respond to unintended pedal misapplication by the driver. The most recent technologies include 'Pedal Misapplication Safety Assist' and 'Acceleration Limitation Assist', both of which are standard features on all trims of the compact electric vehicle Kia EV5.
These two features are designed to detect, in real time, any pedal misapplication or situations that deviate from normal driving patterns by utilizing various vehicle sensors and electronic control units, and to respond immediately.
Pedal Misapplication Safety Assist minimizes the risk of collision by immediately limiting torque or activating the brakes if the driver mistakenly presses the accelerator instead of the brake pedal while stationary and there are obstacles in front or behind the vehicle.
Acceleration Limitation Assist restricts abnormal acceleration by setting the accelerator pedal input to '0' and limiting torque if the driver presses the accelerator deeply for a prolonged period while driving below 80 km/h, as detected by the vehicle’s integrated controller.
Hyundai Motor Group plans to gradually expand the application of these advanced safety assistance technologies not only to electric vehicles but also to hybrid and internal combustion engine vehicles.
A Hyundai Motor Group representative stated, "Pedal Misapplication Safety Assist and Acceleration Limitation Assist are advanced safety assistance devices that, in addition to the mechanical reliability of the brake system, can actively detect and respond to unusual acceleration situations by the driver. Through ongoing technological innovation, we will contribute to creating a driving environment where both drivers and pedestrians can feel safe."
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