SlideShare una empresa de Scribd logo
1 de 20
Descargar para leer sin conexión
Brakes ppt
 Stop the vehicle by converting kinetic energy to heat
energy.
 Heat energy is created in the brakes by friction.
 Friction is created between a moving and non-
moving surface at each wheel to generate the heat.
 Discs and drum brakes are the most common type of
braking system used.
Pedal arm
Push rod
Master cylinder
Brake linings
proportioning valves
Pressure valves
Metering valves
T joint
flexible lining
Calipers
Braking fundamentals
Braking Systems
Braking system components
Drum brakes & components
Disc brakes & components
Antilock braking system & components
Braking procedures
BRAKING FUNDAMENTALS
 PRINCIPLE:
Friction between braking surfaces converts kinetic energy into heat.
In drum brakes, wheel cylinders force brake linings against the inside of the drum.
In disc brakes, pads are forced against a brake disc.
Several factors can influence Vehicle Braking:
 Road surface
 Road conditions
 Weight of the vehicle
 Load on the wheels during stopping
 How the vehicle is being driven.
A basic Braking system has a:
 Brake pedal
 Master cylinder to provide hydraulic pressure
 Brake linings and hoses to connect the master cylinder to the brake assemblies
 Brake assemblies – Drum or Disc that stop the wheels.
DRUM & DISC BRAKES:
Drum brakes have a brake shoe that expands against the inside of a drum.
Disc brakes clamp a flat disc between two pads.
COEFFICIENT OF FRICTION:
The coefficient of friction is the measurement of friction between pairs of
surfaces.
STOPPING DISTANCE:
The distance in which the vehicle stops by applying force.
BRAKE FADE:
It is the reduction in stopping power caused by a build up of heat in the braking surfaces.
WEIGHT TRANSFER:
In dynamic braking condition weight transfers from rear wheels to
front wheels
SKIDDING:
When force of braking exceeds force of adhesion between tires and road
Drum brakes have a drum
attached to the wheel hub and
braking occurs by means of
brake shoes, expanding
against the inside of the drum.
A drum brake is a brake in
which the friction is caused by
a set of shoes or pads that
press against the inner surface
of a rotating drum. The drum
is connected to a rotating
wheel.
 With disc brakes, a disc attached to
the wheel hub may be clamped
between 2 brake pads.
 On light vehicles, both of these
systems are hydraulically operated.
The brake pedal operates a master
cylinder. Hydraulic lines and hoses
connect the master cylinder to
brake cylinders at the wheels.
 Most modern light vehicles have
either disc brakes on the front
wheels and drum brakes on the
rear, or disc brakes on all 4 wheels.
 Disc brakes require greater forces
to operate them. A brake booster
assists the driver by increasing the
force applied to the master cylinder
when the brake is operated.
DISC BRAKE DRUM BRAKE
Better ventilation property
than drum brake.
Low ventilation property.
Uniform wear of frictional
force between pads and
disc.
Non uniform wear of
frictional force.
Design of disc brake is
easy.
It has complex design.
Disc brake have low weight. 20% more weight than
disc.
It has better anti - fade
characteristics.
It has poor anti – fade
characteristics.
Replacing of frictional pads
is easily.
Replacing of frictional pads
is difficult.
Total frictional area of pads Total frictional area of pads
ABS is a system on motor vehicles which prevents the wheels
from locking while braking.
The purpose of ABS is:
To allow the driver to maintain steering control
To shorten braking distances
A typical ABS is composed of:
A central electric unit
Four wheel speed sensors (one for each wheel)
Two or more hydraulic valves on the brake circuit
The electronic unit constantly monitors the rotation speed of
each wheel. When it senses that one or more wheels is rotating
slower than the others, it moves the valves to decrease the
pressure on the braking circuit, effectively reducing the braking
force on that wheel.
ADVANTAGE OF ABS
 It can be used for reducing the stopping distance.
 It enables to steer when brakes are firmly applied.
 It allows braking firmly on surface with different level of grips.
 It can review and adjust the deriver’s driving.
DISADVANTAGE OF ABS
 Driver may takes more risks when driving with vehicles fitted with ABS.
 people who are inexperienced in using ABS may respond inappropriately when
they activate the system.
HYDRAULIC BRAKES
The principle of hydraulic brakes based on the Pascal’s law.
The function of all the components of hydraulic brakes:
Master cylinder:
Distribution of fluid in the pipe lines.
Calipers:
Calipers are used to stop the vehicle by applying
clamping force with brake pads to rotating disc. FLEXIBLE LINING
ROTOR with CALIPER BENZO BOLT DRUM
BRAKE
DOTs 3
DOTs 4 DOTs 5
Less viscous as compare
to other.
It has moderate viscosity. Highly viscous as compare
to other.
Air bubble formation is
high.
Air bubble formation is
less.
No chances of air bubble
formation in pipelines.
Boiling point is 401 degree
Fahrenheit.
Boiling point is 446 degree
Fahrenheit.
Boiling point is 500 degree
Fahrenheit.
FLUIDS
There are three types of fluid using in hydraulic brake system.
 Purpose
Primary brakes
Secondary brakes
 Actuation
Mechanical brakes
Exhaust brakes
Vacuum brakes
Air brakes
Hydraulic brakes
 Position
Inboard brakes
Outboard brakes
 Construction
Disc brakes
Drum brakes
The primary components of the park brake system are:
Parking brake cables
Disc brake caliper fitted with park brake
Park brake lever on drum brakes.
The mechanical park brake is normally hand operated by a brake
handle located on the wheels floor or under the dash. In either
position, it is in easy reach for the driver to apply.
On vehicles fitted with 4 wheel disc brakes, the park brake is
applied at the rear caliper by the cable-operated system.
LAYOUTS OF BRAKES ASSEMBLY
Brakes are bedded in two types mainly.
Diagonally split Rear – Rear and Front - Front
ADVANTAGE OF DAIGONALY SPLIT OVER THE OTHER
BRAKES LAYOUT:
It helps to safe the one circuit of vehicle using tandem master cylinder
if one lining is failed.
The single-piston master cylinder
transforms the applied pedal force
into an hydraulic pressure which is
transmitted simultaneously to all
four wheels.
The master cylinder is connected to
the brake pedal via a pushrod.
The rod from the brake pedal
pushes on the piston. It moves,
closing off the compensating port
and trapping fluid ahead of the
primary cup. Any fluid trapped in the
cylinder is then forced through a
valve called a residual pressure
valve, into the brake lines.
 The tandem master cylinder
transforms applied brake force into
hydraulic pressure which is
transferred to the wheel units
through two separate circuits. This
provides residual braking in the
event of fluid loss.
 When the brake is applied, the
primary piston moves and closes
its compensating port. Fluid
pressure rises, and acts on the
secondary piston. It moves, closes
its compensating port. Pressure
builds up in this circuit. Both
pistons then move and displace
fluid into their separate circuits and
apply the brakes.
 Metering valve
 Pressure differential valve
 Proportioning valve
BLEEDING
It means removal of air bubble
present in the pipelines. The air
bubble block the transfer of
pressure from calliper to master
cylinder.
Bleeding in four Bleeding in two
wheeler wheeler
NEW TECHNOLOGY
According to new technology single
Man can do the bleeding using these
Materials.
Single person bleeding process

Más contenido relacionado

La actualidad más candente

La actualidad más candente (20)

Suspension System
Suspension SystemSuspension System
Suspension System
 
Automobile suspension system
Automobile suspension systemAutomobile suspension system
Automobile suspension system
 
hydraulic brake ppt
hydraulic brake ppthydraulic brake ppt
hydraulic brake ppt
 
Brakes
BrakesBrakes
Brakes
 
BRAKING SYSTEM
BRAKING SYSTEMBRAKING SYSTEM
BRAKING SYSTEM
 
Transmission system
Transmission systemTransmission system
Transmission system
 
PPT ON DISC BREAK BY TARIQUE IIMT
PPT ON DISC BREAK BY TARIQUE IIMTPPT ON DISC BREAK BY TARIQUE IIMT
PPT ON DISC BREAK BY TARIQUE IIMT
 
Tyres
TyresTyres
Tyres
 
6 air brake system
6 air brake system6 air brake system
6 air brake system
 
Clutch ppt
Clutch pptClutch ppt
Clutch ppt
 
Steering gearboxes
Steering gearboxesSteering gearboxes
Steering gearboxes
 
Wheels and tyres for automobile
Wheels and tyres for automobileWheels and tyres for automobile
Wheels and tyres for automobile
 
Clutch
ClutchClutch
Clutch
 
Steering system 7
Steering system 7Steering system 7
Steering system 7
 
Drum brakes
Drum brakesDrum brakes
Drum brakes
 
Different types of suspension system
Different types of suspension systemDifferent types of suspension system
Different types of suspension system
 
Steering system
Steering systemSteering system
Steering system
 
Suspension system
Suspension systemSuspension system
Suspension system
 
7 steering mechanisms
7 steering mechanisms7 steering mechanisms
7 steering mechanisms
 
slides on clutches
slides on clutchesslides on clutches
slides on clutches
 

Similar a Brakes ppt

Similar a Brakes ppt (20)

Breaking system converted
Breaking system convertedBreaking system converted
Breaking system converted
 
Presentation on Braking system
Presentation on Braking system Presentation on Braking system
Presentation on Braking system
 
Hydraulic & disc braking systems
Hydraulic & disc braking systems Hydraulic & disc braking systems
Hydraulic & disc braking systems
 
Brakingsystem (1).pdf
Brakingsystem (1).pdfBrakingsystem (1).pdf
Brakingsystem (1).pdf
 
Automotive Brake System.ppt
Automotive Brake System.pptAutomotive Brake System.ppt
Automotive Brake System.ppt
 
HYDRAULIC BRAKING SYSTEMS
HYDRAULIC BRAKING SYSTEMSHYDRAULIC BRAKING SYSTEMS
HYDRAULIC BRAKING SYSTEMS
 
Brakes
BrakesBrakes
Brakes
 
Brake system assingment
Brake system assingmentBrake system assingment
Brake system assingment
 
braking system
braking systembraking system
braking system
 
Braking system in automobile
Braking system in automobileBraking system in automobile
Braking system in automobile
 
Automobile braking system & tyre
Automobile braking system  & tyreAutomobile braking system  & tyre
Automobile braking system & tyre
 
Braking systems.ppt
Braking systems.pptBraking systems.ppt
Braking systems.ppt
 
Braking systems
Braking systemsBraking systems
Braking systems
 
Brake.pptx
Brake.pptxBrake.pptx
Brake.pptx
 
BRAKING SYSTEM
BRAKING SYSTEMBRAKING SYSTEM
BRAKING SYSTEM
 
Automobile 2 and 11 marks unit iv
Automobile 2 and 11 marks unit ivAutomobile 2 and 11 marks unit iv
Automobile 2 and 11 marks unit iv
 
Suspension system of an Automobile
Suspension system of an AutomobileSuspension system of an Automobile
Suspension system of an Automobile
 
Brakes____Best explained
Brakes____Best explainedBrakes____Best explained
Brakes____Best explained
 
5800643.ppt
5800643.ppt5800643.ppt
5800643.ppt
 
Hydraulic braking systems
Hydraulic braking systemsHydraulic braking systems
Hydraulic braking systems
 

Más de Yashodhan Agarwal

Más de Yashodhan Agarwal (7)

Principles of vehicle dynamics
Principles of vehicle dynamicsPrinciples of vehicle dynamics
Principles of vehicle dynamics
 
Wheeels and tyres
Wheeels and tyresWheeels and tyres
Wheeels and tyres
 
Braking system
Braking systemBraking system
Braking system
 
Suspension system
Suspension systemSuspension system
Suspension system
 
Front axle and steering system
Front axle and steering systemFront axle and steering system
Front axle and steering system
 
Automotive battery
Automotive batteryAutomotive battery
Automotive battery
 
Stirling engine
Stirling engineStirling engine
Stirling engine
 

Último

Study on Financing of zero-emission trucks and their infrastructure
Study on Financing of zero-emission trucks and their infrastructureStudy on Financing of zero-emission trucks and their infrastructure
Study on Financing of zero-emission trucks and their infrastructureEuropeanCleanTruckin
 
Lakshitha maduranga CV - for data entry clerck
Lakshitha maduranga CV - for data entry clerckLakshitha maduranga CV - for data entry clerck
Lakshitha maduranga CV - for data entry clerckLakshanMadhushanka3
 
Nosfdsfsdfasdfasdfasdfsadf asdfasdfasdfasdf
Nosfdsfsdfasdfasdfasdfsadf asdfasdfasdfasdfNosfdsfsdfasdfasdfasdfsadf asdfasdfasdfasdf
Nosfdsfsdfasdfasdfasdfsadf asdfasdfasdfasdfJulia Kaye
 
Modern Trams, Light rail transit systems.pdf
Modern Trams, Light rail transit  systems.pdfModern Trams, Light rail transit  systems.pdf
Modern Trams, Light rail transit systems.pdfmaputi
 
Commercial Extractor fan repair services
Commercial Extractor fan repair servicesCommercial Extractor fan repair services
Commercial Extractor fan repair servicesmb1294198
 
Work Experience - A Love Supreme.ghgfhdgfhfgpptx
Work Experience - A Love Supreme.ghgfhdgfhfgpptxWork Experience - A Love Supreme.ghgfhdgfhfgpptx
Work Experience - A Love Supreme.ghgfhdgfhfgpptxLewisJB
 

Último (8)

Study on Financing of zero-emission trucks and their infrastructure
Study on Financing of zero-emission trucks and their infrastructureStudy on Financing of zero-emission trucks and their infrastructure
Study on Financing of zero-emission trucks and their infrastructure
 
Reinventing the Car - as I reported it in 1985!
Reinventing the Car - as I reported it in 1985!Reinventing the Car - as I reported it in 1985!
Reinventing the Car - as I reported it in 1985!
 
Lakshitha maduranga CV - for data entry clerck
Lakshitha maduranga CV - for data entry clerckLakshitha maduranga CV - for data entry clerck
Lakshitha maduranga CV - for data entry clerck
 
Nosfdsfsdfasdfasdfasdfsadf asdfasdfasdfasdf
Nosfdsfsdfasdfasdfasdfsadf asdfasdfasdfasdfNosfdsfsdfasdfasdfasdfsadf asdfasdfasdfasdf
Nosfdsfsdfasdfasdfasdfsadf asdfasdfasdfasdf
 
Modern Trams, Light rail transit systems.pdf
Modern Trams, Light rail transit  systems.pdfModern Trams, Light rail transit  systems.pdf
Modern Trams, Light rail transit systems.pdf
 
EVAT - Future Mobility Transformation in Thailand
EVAT - Future Mobility Transformation in ThailandEVAT - Future Mobility Transformation in Thailand
EVAT - Future Mobility Transformation in Thailand
 
Commercial Extractor fan repair services
Commercial Extractor fan repair servicesCommercial Extractor fan repair services
Commercial Extractor fan repair services
 
Work Experience - A Love Supreme.ghgfhdgfhfgpptx
Work Experience - A Love Supreme.ghgfhdgfhfgpptxWork Experience - A Love Supreme.ghgfhdgfhfgpptx
Work Experience - A Love Supreme.ghgfhdgfhfgpptx
 

Brakes ppt

  • 2.  Stop the vehicle by converting kinetic energy to heat energy.  Heat energy is created in the brakes by friction.  Friction is created between a moving and non- moving surface at each wheel to generate the heat.  Discs and drum brakes are the most common type of braking system used.
  • 3. Pedal arm Push rod Master cylinder Brake linings proportioning valves Pressure valves Metering valves T joint flexible lining Calipers
  • 4. Braking fundamentals Braking Systems Braking system components Drum brakes & components Disc brakes & components Antilock braking system & components Braking procedures
  • 5. BRAKING FUNDAMENTALS  PRINCIPLE: Friction between braking surfaces converts kinetic energy into heat. In drum brakes, wheel cylinders force brake linings against the inside of the drum. In disc brakes, pads are forced against a brake disc. Several factors can influence Vehicle Braking:  Road surface  Road conditions  Weight of the vehicle  Load on the wheels during stopping  How the vehicle is being driven. A basic Braking system has a:  Brake pedal  Master cylinder to provide hydraulic pressure  Brake linings and hoses to connect the master cylinder to the brake assemblies  Brake assemblies – Drum or Disc that stop the wheels.
  • 6. DRUM & DISC BRAKES: Drum brakes have a brake shoe that expands against the inside of a drum. Disc brakes clamp a flat disc between two pads. COEFFICIENT OF FRICTION: The coefficient of friction is the measurement of friction between pairs of surfaces. STOPPING DISTANCE: The distance in which the vehicle stops by applying force. BRAKE FADE: It is the reduction in stopping power caused by a build up of heat in the braking surfaces. WEIGHT TRANSFER: In dynamic braking condition weight transfers from rear wheels to front wheels SKIDDING: When force of braking exceeds force of adhesion between tires and road
  • 7. Drum brakes have a drum attached to the wheel hub and braking occurs by means of brake shoes, expanding against the inside of the drum. A drum brake is a brake in which the friction is caused by a set of shoes or pads that press against the inner surface of a rotating drum. The drum is connected to a rotating wheel.
  • 8.  With disc brakes, a disc attached to the wheel hub may be clamped between 2 brake pads.  On light vehicles, both of these systems are hydraulically operated. The brake pedal operates a master cylinder. Hydraulic lines and hoses connect the master cylinder to brake cylinders at the wheels.  Most modern light vehicles have either disc brakes on the front wheels and drum brakes on the rear, or disc brakes on all 4 wheels.  Disc brakes require greater forces to operate them. A brake booster assists the driver by increasing the force applied to the master cylinder when the brake is operated.
  • 9. DISC BRAKE DRUM BRAKE Better ventilation property than drum brake. Low ventilation property. Uniform wear of frictional force between pads and disc. Non uniform wear of frictional force. Design of disc brake is easy. It has complex design. Disc brake have low weight. 20% more weight than disc. It has better anti - fade characteristics. It has poor anti – fade characteristics. Replacing of frictional pads is easily. Replacing of frictional pads is difficult. Total frictional area of pads Total frictional area of pads
  • 10. ABS is a system on motor vehicles which prevents the wheels from locking while braking. The purpose of ABS is: To allow the driver to maintain steering control To shorten braking distances A typical ABS is composed of: A central electric unit Four wheel speed sensors (one for each wheel) Two or more hydraulic valves on the brake circuit The electronic unit constantly monitors the rotation speed of each wheel. When it senses that one or more wheels is rotating slower than the others, it moves the valves to decrease the pressure on the braking circuit, effectively reducing the braking force on that wheel.
  • 11. ADVANTAGE OF ABS  It can be used for reducing the stopping distance.  It enables to steer when brakes are firmly applied.  It allows braking firmly on surface with different level of grips.  It can review and adjust the deriver’s driving. DISADVANTAGE OF ABS  Driver may takes more risks when driving with vehicles fitted with ABS.  people who are inexperienced in using ABS may respond inappropriately when they activate the system.
  • 12. HYDRAULIC BRAKES The principle of hydraulic brakes based on the Pascal’s law. The function of all the components of hydraulic brakes: Master cylinder: Distribution of fluid in the pipe lines. Calipers: Calipers are used to stop the vehicle by applying clamping force with brake pads to rotating disc. FLEXIBLE LINING ROTOR with CALIPER BENZO BOLT DRUM BRAKE
  • 13. DOTs 3 DOTs 4 DOTs 5 Less viscous as compare to other. It has moderate viscosity. Highly viscous as compare to other. Air bubble formation is high. Air bubble formation is less. No chances of air bubble formation in pipelines. Boiling point is 401 degree Fahrenheit. Boiling point is 446 degree Fahrenheit. Boiling point is 500 degree Fahrenheit. FLUIDS There are three types of fluid using in hydraulic brake system.
  • 14.  Purpose Primary brakes Secondary brakes  Actuation Mechanical brakes Exhaust brakes Vacuum brakes Air brakes Hydraulic brakes  Position Inboard brakes Outboard brakes  Construction Disc brakes Drum brakes
  • 15. The primary components of the park brake system are: Parking brake cables Disc brake caliper fitted with park brake Park brake lever on drum brakes. The mechanical park brake is normally hand operated by a brake handle located on the wheels floor or under the dash. In either position, it is in easy reach for the driver to apply. On vehicles fitted with 4 wheel disc brakes, the park brake is applied at the rear caliper by the cable-operated system.
  • 16. LAYOUTS OF BRAKES ASSEMBLY Brakes are bedded in two types mainly. Diagonally split Rear – Rear and Front - Front ADVANTAGE OF DAIGONALY SPLIT OVER THE OTHER BRAKES LAYOUT: It helps to safe the one circuit of vehicle using tandem master cylinder if one lining is failed.
  • 17. The single-piston master cylinder transforms the applied pedal force into an hydraulic pressure which is transmitted simultaneously to all four wheels. The master cylinder is connected to the brake pedal via a pushrod. The rod from the brake pedal pushes on the piston. It moves, closing off the compensating port and trapping fluid ahead of the primary cup. Any fluid trapped in the cylinder is then forced through a valve called a residual pressure valve, into the brake lines.
  • 18.  The tandem master cylinder transforms applied brake force into hydraulic pressure which is transferred to the wheel units through two separate circuits. This provides residual braking in the event of fluid loss.  When the brake is applied, the primary piston moves and closes its compensating port. Fluid pressure rises, and acts on the secondary piston. It moves, closes its compensating port. Pressure builds up in this circuit. Both pistons then move and displace fluid into their separate circuits and apply the brakes.
  • 19.  Metering valve  Pressure differential valve  Proportioning valve
  • 20. BLEEDING It means removal of air bubble present in the pipelines. The air bubble block the transfer of pressure from calliper to master cylinder. Bleeding in four Bleeding in two wheeler wheeler NEW TECHNOLOGY According to new technology single Man can do the bleeding using these Materials. Single person bleeding process