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SEMINAR- 2010-2011-

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SUBJECTvacuum brake

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WELCOME

TO

ALL

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What is vacuum brake ?

Vacuum brake is a type of brake used in

automobile field and uses the engine vacuum

for braking

Which help to reduce the drivers effort when

apply brake vacuum pressure is the pressure

which is below the atmosphere

The most usable vacuum break is vacuum servo

brake system

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1) The vacuum reservoir

2) Servo cylinder with piston3) Master cylinder

4) Non return valve

5) Brake fluid6) Control unit

PARTS OF VACUUM SERVO

SYSTEMS

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Air replace from opposite side of cylinderpiston system where the pressure is applied

Create a negative action at air replaced

side of cylinder piston system

So air shows a pulling action at air

replaced side of the piston inside the

cylinder

The piston tend to free movement onvacuum side of piston.

PRINCIPLE OF WORKING

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working of vacuum brake

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ADVANTAGES OF VACUUM

BRAKE

Higher braking efficiency

Reduce the driver`s effort

Not costly because air is freely available

Even the function fails this will act as an

ordinary air brake

Lesser braking time or time lag

More rapid in action

Used in cars ,trains ,etc

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LIMITATION OF VACUUM

BRAKE

leakage of vacuum brake is risky

this function work when engine is on

working condition

particle of soil and others will reduce thelife of this brake

this is larger than ordinary brake system

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THANK YOU