Most of the modern cars are far safer than the older-generation cars because of the new safety features. One such safety feature is the Electronic Stability Program (ESP), which is quickly becoming common in many affordable cars. Mahindra XUV 500 features the ESP since its first-generation model, which was launched in 2011. A detailed video made by Bosch Mobility Solutions with the old-generation XUV 500 explains how the feature works and why it is so important?
The video shows how ESP works and how the vehicle will behave when the ESP is turned off. ESP has a lot of features under it but one of the main features is to save the vehicle from skidding and lose control during high-speed manoeuvres. The video shows Mahindra XUV 500 doing a quick manoeuvre without the ESP switched off. The XUV 500 can be seen going out of the control and turning 360 degrees on the tarmac. Later, the same manoeuvre was done at exactly the same speed. The ESP kicks in and saves the vehicle from skidding on the tarmac and going out of control.
ESP also has other functions like traction control, hill hold control and hill descent control. The video explains all the features separately. To explain the traction control system, the Mahindra XUV 500 climbs on an incline with two tyres on a slippery surface. Without the ESP on, the tyres on the slippery surface keep on skidding and the vehicle eventually comes down the down uncontrollably. With the ESP on, the left side wheels find traction and go up the slope without any problem. This problem was shown when the vehicle stops on an incline with the tyres in slippery surfaces but it can happen even when the vehicle is moving on a slippery surface. The ESP system modulates the torque on each wheel to find the optimum grip from the surface.
Other features of the ESP include the Hill Hold Control. This feature eliminates the need of using the handbrake when starting again on an incline after stopping. The hill hold feature of the ESP detects when the vehicle is on an incline and automatically keeps the brakes engaged for about 2 seconds to eliminate the need of handbrake or quickly moving feet from the brake pedal to the accelerator. ESP also features hill descent system, which keeps the speed in check while coming down an incline. The hill descent system automatically engages the brakes when the vehicle reaches a pre-defined speed to ensure that it does not go out of control and the driver only has to concentrate on steering the vehicle safely.
The ESP has a number of components that work together to keep the vehicle safe. It has various sensors like steering input sensor, the speed sensor on the individual wheels and rotational sensor in the middle of the vehicle to count the rotation of the vehicle. There is a central processing unit that gathers the data and works on it while there is a hydraulic system that applies pressure on the individual brakes depending on the situation. The video also shows how the ESP works by applying the brake on the individual wheels to ensure that the vehicle stays in control.