Do you think that with ESP security is invincible? |Automobile life-saving knowledge lecture hall

Man’s life-saving knowledge lecture hall officially opened today. In this series of articles, Man will break all kinds of safety configurations for everyone and talk about it. If you have any safety knowledge you want to know, you can also leave a message. Today I will talk to you about ESP. ESP is the electronic body stability control system we usually call. Friends who are concerned about car safety know that this is a very important safety configuration, but you know the specific details of this configuration. how much? Don't worry, let's take a quick look today.

What the hell is ESP

ESP is a safety configuration on the vehicle, which isABSThe anti-lock braking and traction control functions are further expanded, and on this basis, the yaw rate when the vehicle is turning is increasedsensor, Lateral plusspeed sensorwithsteering wheelCornersensor, Through the ECU to control the driving force and braking force of the front and rear, left and right wheels to ensure the lateral stability of the vehicle.

To put it simply, ESP is an "upgraded version" of the conventional safety configuration. Today, every manufacturer that values ​​driving safety should be equipped with ESP as standard.

Not all "ESP" are called ESP

Let me tell you a misunderstanding. Many people think that all electronic body stability control systems are called ESP. In fact, this is not the case. ESP is only a registered trademark of Bosch, which means that the electronic body stability control system developed by Bosch can only be used. Called ESP.

So what is the name of the electronic body stability control system developed by other manufacturers? Today, I will give you a few common ones.

Nissan: Vehicle Dynamic Control (Vehicle DynamicControl) referred to as VDC;

Toyota: Vehicle Stability Control (Vehicle Stability Control) is referred to as VSC;

Honda: Vehicle Stability Assist Control (Vehicle Stability Assist Control) is referred to as VSA;

BMW：Dynamic Stability Control (Dynamic Stability Control) referred to as DSC;

Volvo: Dynamic Stability Tracing Control (Dynamic Stability Tracing Control) referred to as DSTC;

Therefore, if there is no ESP mark on the model you purchased, don't worry, and see if there are any of the above marks. Although the names are different, the working principles and functions are basically the same.

What is the structure of ESP

Here, we take the most representative Bosch ESP as an example.

The ESP system collects various data in the driving state of the vehicle body through these electronic units on the map. When the analysis finds that the vehicle body is about to lose control or has lost control, it orders the actuator to work to ensure that the vehicle returns to a safe driving state. In addition, when the driver does not take braking measures in time, he applies pressure to the brake hose of a certain wheel for the operator to generate braking force. In addition, ESP can also control the power output of the engine to a certain extent.

Simply put, ESP is to use computer programs to complete many operations that the driver cannot complete in an instant, so as to avoid the loss of control of the vehicle to the greatest extent to prevent accidents.

How does ESP work

First of all, we must clearly understand that ESP is not an independent function, but an "extension" of a comprehensive safety configuration. When working, it needs to cooperate with ABS anti-lock braking, braking force distribution (EBD/CBC, etc.),brakeAssistance (EBA/BAS/BA, etc.), traction control (ASR/TCS/TRC, etc.).

So, how does ESP work?The moving vehicle bears both longitudinal and lateral forces at the same time, as long astireMaintain proper lateral force, and the entire vehicle can maintain a stable state. However, when these forces drop to a critical point, they will have a negative effect on the directional stability of the vehicle and cause a loss of control. In order to restore the runaway vehicle to stable driving in time, ESP must be achieved by applying precise braking force to the corresponding wheels individually.

If you compare a car to an adult, ESP is more like a person’s "control thinking". When you perceive the limit of your body or perceive danger, your brain will send out signals to try your best to control your hand and foot behavior so that you can Through the crisis safely.

Write at the end

At the end of the article, Man has a few thoughts to everyone.

ESP is certainly a very important safety configuration, which can save lives at critical moments. However, in recent years, ESP has been overly mythical in China. Many people even mistakenly think "With ESP in my car, I can safely drive fast."

In fact, ESP can only help the vehicle to avoid loss of control as much as possible within the limit of the vehicle. Once the speed of the vehicle reaches its limit, if the driver makes an emergency change of lanes, the ESP is also "lost".

In terms of quantified figures, when the speed of a general civilian car exceeds 75~80km/h, if some drastic changes are made suddenly, the vehicle will basically lose control, or there is a great risk of losing control.

Therefore, ESP is not a panacea, nor is it absolutely safe. The real safety is always in the hands of the driver.

I hope everyone can drive safely and travel safely.