Automotive Science Popularization Knowledge - What is ABS
ABS achieves control of wheel lockup by controlling the retraction and release of brake oil pressure. The working process is actually a cycle of lock-up release lock-up release, which keeps the vehicle in a critical lock-up gap rolling state.
However, in some movie stunt scenes, some cars are not equipped with ABS, which is why we can see various difficult thrilling scenes such as sideslip and tailspin. For some high-end racing drivers who want to pursue driving excitement, they also do not like to install ABS on their cars. After all, ABS is not designed for super actors and high-end racing drivers, but for ordinary drivers to ensure their driving safety.
Is EBD more advanced than ABS?
In recent years, the popularity of cars has added EBD. Many car models, such as the Guangben Odyssey, Pellio, Siena, etc., are described as "ABS+EBD" in their braking. So is EBD an extension of ABS functionality, or is EBD more advanced than ABS?
The full English name of EBD is ElectricBrakeforceDis contribution, which translates to "Electronic Brake Force Distribution" in Chinese. When braking a car, if the conditions for four tires to adhere to the ground are different, for example, if the left wheel adheres to a slippery road surface and the right wheel adheres to a dry road surface, the friction between the four wheels and the ground is different, and the braking force of the four wheels is the same, it is easy to produce slipping, tilting, and rollover phenomena.
The function of EBD is to calculate the friction value of four tires due to different adhesion at high speed at the moment of vehicle braking, and then adjust the braking device so that it can be adjusted at high speed in motion according to the set procedure to match the braking force and friction (traction), so as to ensure the stability and safety of the vehicle.
When the wheels lock up during emergency braking, EBD already balances the effective ground grip of each wheel before ABS action, which can prevent tailspin and lateral displacement, and shorten the braking distance of the car.
EBD is actually an auxiliary function of ABS, which can improve and enhance the effectiveness of ABS. So in terms of safety indicators, the performance of cars has added "ABS+EBD".
Is the functionality of ESP more powerful
ESP is an abbreviation for Electronic Stability Program in English and translated as "Electronic Stability Program" in Chinese. This group of systems typically supports the functions of ABS and ASR (Drive Anti slip System, also known as Traction Control System). It analyzes the driving status information of the vehicle transmitted from various sensors, and then sends correction commands to ABS and ASR to help maintain dynamic balance of the vehicle. ESP can make the vehicle maintain the best stability under various conditions, and the effect is more obvious in the case of oversteer or understeer.
ESP generally requires the installation of steering sensors, wheel sensors, side slip sensors, lateral acceleration sensors, etc. ESP can monitor the driving status of a car and automatically apply braking force to one or more wheels to keep the car running on the normal lane, and in some cases, it can even brake 150 times per second. There are currently three types of ESP: a four channel or four wheel system that can independently apply braking force to four wheels; A dual channel system that can independently apply braking force to two front wheels; A three channel system that can independently apply braking force to two front wheels and simultaneously apply braking force to the rear wheels. The most important feature of ESP is its initiative. If ABS responds passively, ESP can prevent problems before they occur.
In short, whether it's ABS, EBD, or ESP, they are all aimed at improving people's driving safety.
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