Traction control system helps to maintain vehicle stability

1. YENEPOYA INSTITUTE OF TECHNOLOGY
N.H. 13, THODAR, MOODBIDRI-574225, MANGALORE, D.K
YENEPOYA
INSTITUTE OF TECHNOLOGY
Department of Electronics and Communication Engineering
TRACTION CONTROL
SYSTEAM
Seminar on
Under the guidance of,
Mr . Mohan Kumar M
Assistant Professor
Dept. of ECE
Seminar Co-Ordinator,
Prof. Rebecca Fernandees
Presentation by,
Avinash V
4DM18EC010

2. Contents
 Introduction
 Need of TRAC
 Types of TRAC
 Components
 Working
 Benefits
 Drawbacks
 Conclusion
 References

3. Introduction
 Traction means friction or grip that acts between surface of road and tire.
 Traction control is a Electronic technology designed to help your vehicle maintain friction,
no matter how slippery the road surface.

4. Need of Traction Control
 During rainy season majority of accidents are occurs due to slippery surface .
 This can be avoided by using modern-day safety features like trac control.
 Therefore it is necessary to have traction control order to maintain vehicle motion inn
adverse conditions like slippery surface or climbing in hills.

5. Types of TCS
 Torque managed TCS
 Brake applied TCS
Torque management in TCS is obtained by cutting engine fuel
In torque managed system as the wheel slippage is sensed a signal is send by the ECU to
retard ignition or partially close the throttle to reduce the power output and hence attaining
the control of wheel slip

6. TCS and ABS
 TCS apply the brakes when the wheel tries to spin and loose traction and hence increase
the traction force and provides acceleration to the vehicle.
 A.B.S releases the brake when wheels go into locking and provides good steering while
braking in slippery surfaces.

7. Components
ECU:
An electronic control unit (ECU) is a small device in a
vehicle's body that is responsible for controlling a specific
function
Vehicle Speed Sensors:
The vehicle speed sensor (VSS) measures wheel speed.

8. Actuator:
An actuator is a device that uses a form of power to
convert a control signal into mechanical motion

9. Working
 traction control system works by slowing only the slipping tire, thus helping it regain
traction on the road surface.
 The system does this by either reducing the power delivery or applying brakes to that tire.
 Each individual tire is monitored by a sensor that monitors their rotational speeds.
 The sensor data is fed to an onboard computer (ECS) that compares individual tire speeds
and recognizes if there has been a sudden increase in the speed of one of the tires.
 In the case of slip detection, the TCS control module automatically sends a signal to the
hydraulic brake modulator of the ABS to apply the brakes to the slipping wheel.

11. Benefits Of Traction Control
 Traction control is beneficial when roads are wet and icy.
 Maintain stability.
 Reduction of yawing moment .
 Better safety and stability on poor surfaces .
 No wheel spin on turning and cornering.

12. Drawback of TCS
 Cost is high.
 Cost of maintenance.
 Not ideal for all kind of situations.

13. Conclusion
However, this feature helps reduce the likelihood of the driver losing control when
driving the vehicle on a tough road, preventing an accident.
Always have your traction control engaged, as it makes for safer driving and it would
be more beneficial.

14. Reference
 “Mechanical Wear Fundamentals and Testing” – Dr. Raymond Bayer, CRC Press.
 “Theory of ground vehicles” - Prof. Jo Yung Wong, Carleton University, Canada.
 “Traction Control and other electronic trickery” – Prof. Andrew Trevitt, California State
University.
 “How stuff works - TRAC System” - Davison technologies, U.S.A.
 “AUTOSHOP 101” - Kevin Sullivan, Washington Post journalist.

15. THANK YOU