It gives an idea about a Traction Control System

1. BY,
ARAVINDKUMAR
TRACTION CONTROL
SYSTEM

2. Traction Control
 The steerability of a vehicle is not only lost when the
wheels lock up on braking; the same effect arises if the
wheels spin when driving off under severe
acceleration.
 Electronic traction control has been developed as a
supplement to ABS. This control system prevents the
wheels from spinning when moving off or when
accelerating sharply while on the move.
 In this way, an individual wheel, which is spinning is
braked in a controlled manner. If both or all of the
wheels are spinning, the drive torque is reduced by
means of an engine control function.

3. Traction is the force used to generate motion between a
body and a tangential surface using dry friction, for an
automobile it is b/w tyre and road surface
Acceleration of a vehicle is limited by two factors
power of the engine and traction force between the tyre
and road surface
Thus it is necessary to have traction control in order to
maintain the vehicle motion in adverse conditions like
slippery surface or in climbing hills

4. Differential(1876) that gives power to wheel having more
traction, it results in wheel slip but with locking it gives
consistent power output.
Four wheel drive(1903) that gives power to all wheels
thus improves off road performance and a better traction
than differential drive but has more weight.
Anti lock Brake System which improve the vehicle
control during braking, avoiding wheel locking.

5. A TCS should not be confused with ABS both work
on the same principle in opposite conditions.
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.
An A.B.S releases the brake when wheels go into
locking and provides good steering while braking in
slippery surfaces
Traction control is an active vehicle safety feature
designed to help the vehicle make effective use of all the
traction available on the road when accelerating in
slippery conditions.

6. For a four wheel drive vehicle T.C.S can be used with
minimal modifications along A.B.S with an additional
wheel slip sensor and an E.C.U to override the brake is
only necessary
For R.W.D and F.W.D more modifications are required in
A.B.S system

7. Traction Control

8. Traction Control

9. Traction Control

10. When vehicle is running the E.C.U module
monitors the wheel speed and if any
wheel enters the loss of traction it
reduces the power input to that wheel

11. Brake applied TCS is used when vehicle is running at
low road speeds it is good for wet and snow condition
on road
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

13. Traction control is used to achieve the following:
 Maintain stability.
 Reduction of yawing moment reactions.
 Provide optimum propulsion at all speeds.
 Reduce driver workload.
Advantages
 Improved tractive force.
 Better safety and stability on poor surfaces.
 Less driver stress.
 Longer tyre life.
 No wheel spin on turning and cornering.
Traction Control

14. THANK YOU