ESP: what is it?

ESP: what is it - a whim or a necessity? Is it necessary to have this system in the car or can you easily do without it? The answers to these questions you will learn from this article.

ESP is a system of electronic stabilization or exchange rate stability. Who likes to call it. At different manufacturers its name can differ. Twin brothers are systems DSTC, DSC, VSC, VDC, ESC.

ESP. What does this give the driver?

First of all, safety in extreme situations. In case of danger, the system takes the initiative and in a matter of a few seconds intervenes in the management. ESP monitors the transverse dynamics of the car and helps maintain the exchange rate stability. In particular, it is able to prevent lateral sliding and skidding, stabilize the trajectory of movement and the position of the machine. This is especially true when driving at high speeds and with poor adhesion to the road. Of course, nothing in this world is perfect, and no one can guarantee 100% protection. But this clever assistant will not only help you out in extreme situations.

The principle of its operation is quite simple. It receives data from ABS sensors and, if necessary, brakes the wheels.

History

Something similar to modern ESP was patented in 1959. The German company Daimler-Benz called such an invention "control device." However, to realize the idea came to life only in 1994. Already in 1995, on the CL600 coupe, and then on all the cars of the S and SL series, the ESP system was installed in a serial order. Is this a whim or a necessity?

Judging by the fact that today this option is available on almost all models of cars, it can be judged that the system has proved itself well. But do not buy ESP Japan. Trust in the original equipment.

ESP: What is it and how does it work?

The system is connected to the engine control unit, ARS (anti-slip system) and ABS. ESP continuously processes signals from various sensors. In particular, thanks to ABS, the system receives data on the speed of rotation of the wheels. The steering position and pressure in the braking system are also taken into account. But the main indicators are the angular velocity sensor , which is calculated with respect to the vertical axis, as well as the transverse acceleration sensor. It is these devices that can give a signal that there is a lateral slip along the vertical axis, determine its degree and give orders for further action. The system constantly monitors the speed of the car, engine speed, steering angle and the presence of skidding.

The controller continuously compares the actual behavior of the car on the road with that laid down by the program. If deviations are observed, the system perceives this as a dangerous situation and takes actions to correct it.

To return the car to the previous course, the system can give the command to force the brakes on the wheels. This action is carried out using an ABS hydraulic modulator, which creates pressure in the braking system. Together with this, a command is given to reduce the torque and reduce fuel delivery.

The system works constantly - during braking, acceleration and even when coasting.