Vehicle control system and control method thereof

1. A vehicle control system comprising:

an inputter configured to receive a wheel speed of a vehicle; and

a controller configured to determine a wheel spin based on the wheel speed, determine whether the vehicle passes over a pothole based on the tendency of the wheel spin, and calculate time for delaying start of engine traction control based on the wheel speed and delay the start of the engine traction control for the time calculated based on the wheel speed when it is determined that the vehicle passes over the pothole.

2. The vehicle control system according to claim 1 , wherein the controller is configured to prematurely release the engine traction control when the vehicle passes over the pothole after the engine traction control is started.

3. The vehicle control system according to claim 1 , wherein the controller is configured to determine whether the vehicle passes the pothole based on the tendency of the wheel spin of a front wheel during forward travel of the vehicle, and then delay the start of the engine traction control for the time calculated based on the wheel speed when it is determined that a rear wheel passes over the pothole.

4. The vehicle control system according to claim 1 , wherein the controller is configured to determine whether the vehicle passes over the pothole based on the tendency of the wheel spin of a rear wheel during backward travel of the vehicle, and then delay the start of the engine traction control for the time calculated based on the wheel speed when it is determined that a front wheel passes over the pothole.

5. The vehicle control system according to claim 2 , wherein the controller is configured to prematurely release the engine traction control when it is determined that the vehicle passes over the pothole based on the wheel spin of a rear wheel after the start of the engine traction control based on the tendency of the wheel spin of a front wheel, or when it is determined that the vehicle passes over the pothole based on the tendency of the wheel spin of the front wheel after the start of the engine traction control based on the wheel spin of the rear wheel.

6. The vehicle control system according to claim 5 , wherein the controller is configured to prematurely release the engine traction control by increasing the engine torque increase rate.

7. The vehicle control system according to claim 6 , wherein the controller is configured to prematurely release the engine traction control by increasing the engine torque increase rate after reducing the engine torque to a minimum upon passage over an additional pothole after the start of the engine traction control.

8. The vehicle control system according to claim 6 , wherein the controller is configured to determine that the vehicle is passing over the pothole when an increase or decrease of the wheel spin for a predetermined time is more than a predetermined value according the tendency of the wheel spin formed within the predetermined time.

9. A vehicle control method comprising:

receiving a wheel speed of a vehicle;

determining a wheel spin based on the wheel speed;

determining whether the vehicle passes over a pothole based on the tendency of the wheel spin; and

when it is determined that the vehicle passes over the pothole, calculating time for delaying start of engine traction control based on the wheel speed and delaying the start of engine traction control for the time calculated based on the wheel speed.

10. The method according to claim 9 , further comprising:

when the vehicle passes over the pothole after the engine traction control is started, prematurely releasing the engine traction control upon passage over the pothole.

11. The method according to claim 9 , wherein the delaying of the engine traction control comprises:

determining whether the vehicle passes over the pothole based on the wheel spin of a front wheel during forward travel of the vehicle and then delaying the start of the engine traction control for the time calculated based on the wheel speed when it is determined that a rear wheel passes over the pothole or determining whether the vehicle passes over the pothole based on the wheel spin of the rear wheel during backward travel of the vehicle, and then delaying the start of the engine traction control for the time calculated based on the wheel speed when it is determined that the front wheel passes over the pothole.

12. The method according to claim 10 , wherein the prematurely releasing of the engine traction control comprises:

prematurely releasing the engine traction control when it is determined that the vehicle passes over the pothole based on the wheel spin of a rear wheel after the start of the engine traction control based on the tendency of the wheel spin of a front wheel, or when it is determined that the vehicle passes over the pothole based on the tendency of the wheel spin of the front wheel after the start of the engine traction control based on the wheel spin of the rear wheel.

13. The method according to claim 12 , further comprising:

prematurely releasing the engine traction control by increasing the engine torque increase rate.

14. The method according to claim 13 , further comprising:

prematurely releasing the engine traction control by increasing the engine torque increase rate after reducing the engine torque to a minimum upon passage over an additional pothole after the start of the engine traction control.

15. The method according to claim 9 , wherein the determining of whether the vehicle passes over the pothole based on the tendency of the wheel spin comprises:

determining that the vehicle is passing over through the pothole an increase or decrease of the wheel spin for a predetermined time is more than a predetermined value according the tendency of the wheel spin formed within the predetermined time.