ANTI-LOCK BRAKING SYSTEM

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ANTI-LOCK BRAKING SYSTEM

• AA

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INTRODUCTION

• The Anti-lock Braking System commonly pronounced
  as (ABS) is a four-wheel system that prevents
  wheel lock-up by automatically modulating the
  brake pressure during an emergency stop.
• Anti-lock brakes allow you to maintain steering
  during emergency braking.

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Why do you need ABS ?
Suppose if you hit the brakes hard and try to
steer , your car doesn't react to the steering
wheel anymore and just skids out of control .
This happens, because all the wheels are locked
up while you are holding down the brake pedal.
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TYPES OF ABS
They can be differentiated by the number of
channels that is, how many valves that are
individually controlled and the number of speed
sensors. Basing on this there are four types

• Four-channel, four-sensor ABS

• Three-channel, four-sensor ABS

• Three-channel, three-sensor ABS

• One-channel, one-sensor ABS

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BASIC COMPONENTS

• Speed sensors
• Pump
• Valves
• Controller

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• These valves are controlled by signals sent by
  speed sensors depending on wheel speed.

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How does it work?

• Before ABS, if you slammed on the brakes, your
  wheels would lock and you would eventually come
  to a screeching halt.
• To prevent you from skidding out of control,
  people were taught to pump their brakes. This
  prevented wheel lock up.
• Today, we don't need to pump the brakes because
  ABS does that for us.
• A typical ABS system will pump the brakes about
  15 times per second, far faster than any driver.

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• Speed sensors are located at each wheel. When
  these sensors 'sense that a tire has stopped
  moving (the wheel is locked under braking) the
  sensor sends a message to the controller that in
  turn regulates the brake pressure to reduce
  lock-up.
• It 'pumps' the brakes over a dozen times per
  second by increasing brake pressure and reducing
  it, over and over again.
• Since the wheels are not locked up, a driver can
  swerve to avoid an obstacle while under hard
  braking.

• anti-lock brakes benefit you in two ways You'll
  stop faster, and you'll be able to steer while
  you stop.

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Examples
Apache RTR
Honda CBR 250R
MAURTI SWIFT VDI
AUDI Q7
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ANY QUERIES ?
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Thank u