BRAKE BOOSTER

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BRAKE BOOSTER
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INTRODUCTION

• In Automobile Vehicles, Brake Boosters are used
  only on power brakes, not Manual Brakes.
• The Boosters Function is to give more Braking
  Power with minimum pressure on the Brake pedal.
• If the Booster is not working properly ,you will
  still have Brakes, but the Brake pedal will be
  very hard to Push.
• The Brake Booster is located between the Brake
  pedal and the Master cylinder .
• The basic principle of the Brake Booster is
  pressure differential.

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Construction

• The Brake Booster is made
• of Five Parts
• - Body
• - Booster piston
• - Booster Return spring
• - Reaction valve
• - Control valve
• The Body has Two Chambers The variable
  pressure chamber and the constant pressure
  chamber separated by a diaphragm.

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WORKING

• As the driver steps on the brake pedal,
  atmospheric air is introduced in the variable
  pressure chamber, producing a pressure
  differential between the variable and the
  constant pressure chamber.
• The force generated by the pressure differential
  on the plate is transmitted to the push rod via
  the booster piston which pushes the piston of the
  brake master cylinder.
• When the pedal is depressed, All components
  return to its original positions through the
  return springs.

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TYPES

• The booster's size and whether it has a single
  or more than one diaphragm depend on the year,
  make and model of the vehicle.
• When ordering a new booster, tell the auto parts
  store or dealer the year, make and model of your
  vehicle, and they will give you the correct one.

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Thank you.