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Brake

 
Brake

 
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Brake
 
 
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A brake is a device for applying a force against the friction of the road, slowing or stopping the motion of a machine
Machine

A machine is any device that uses energy to perform some activity. In common usage, the meaning is that of a device having parts that perform or assist in performing any type of work....
 or vehicle
Vehicle

Vehicles, derived from the Latin word, vehiculum, are non-living means of transport. Most often they are manufactured , although some other means of transport which are not made by humans also may be called vehicles; examples include icebergs and floating tree trunks....
, or alternatively a device to restrain it from starting to move again. The kinetic energy
Kinetic energy

The kinetic energy of an object is the extra energy which it possesses due to its motion. It is defined as the mechanical work needed to accelerate a body of a given mass from rest to its current velocity....
 lost by the moving part is usually translated to heat
Heat

In physics and thermodynamics, heat is any transfer of energy from one body or thermodynamic system to another due to a difference in temperature....
 by friction
Friction

File:Friction alt.svgFriction is the force resisting the relative lateral motion of solid surfaces, fluid layers, or material elements in contact....
. Alternatively, in regenerative braking, much of the energy is recovered and stored for later use.

Note that kinetic energy increases with the square of the velocity (E = 1/2·m·v2 relationship).






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how the brake is applied? what axis need to brake?
Hello, I just want to know what is "sprocket brake system" ?








Encyclopedia


A brake is a device for applying a force against the friction of the road, slowing or stopping the motion of a machine
Machine

A machine is any device that uses energy to perform some activity. In common usage, the meaning is that of a device having parts that perform or assist in performing any type of work....
 or vehicle
Vehicle

Vehicles, derived from the Latin word, vehiculum, are non-living means of transport. Most often they are manufactured , although some other means of transport which are not made by humans also may be called vehicles; examples include icebergs and floating tree trunks....
, or alternatively a device to restrain it from starting to move again. The kinetic energy
Kinetic energy

The kinetic energy of an object is the extra energy which it possesses due to its motion. It is defined as the mechanical work needed to accelerate a body of a given mass from rest to its current velocity....
 lost by the moving part is usually translated to heat
Heat

In physics and thermodynamics, heat is any transfer of energy from one body or thermodynamic system to another due to a difference in temperature....
 by friction
Friction

File:Friction alt.svgFriction is the force resisting the relative lateral motion of solid surfaces, fluid layers, or material elements in contact....
. Alternatively, in regenerative braking, much of the energy is recovered and stored for later use.

Note that kinetic energy increases with the square of the velocity (E = 1/2·m·v2 relationship). This means that if the speed
Speed

Speed is the rate of Motion , or equivalently the rate of change of distance.Speed is a Scalar quantity with dimensions length/time; the equivalent Vector quantity to speed is velocity....
 of a vehicle doubles, it has four times as much energy. The brakes must therefore dissipate four times as much energy to stop it and consequently the braking distance
Braking distance

Braking distance refers to the distance a vehicle will travel from the point where its brakes are fully applied to when it comes to a complete stop....
 is four times as long.

Brakes of some description are fitted to most wheel
Wheel

A wheel is a circular device that is capable of rotating on its axis, facilitating movement or transportation whilst supporting a load , or performing labour in machines....
ed vehicle
Vehicle

Vehicles, derived from the Latin word, vehiculum, are non-living means of transport. Most often they are manufactured , although some other means of transport which are not made by humans also may be called vehicles; examples include icebergs and floating tree trunks....
s, including automobile
Automobile

An automobile or motor car is a wheeled motor vehicle for transportation passengers, which also carries its own car engine or motor. Most definitions of the term specify that automobiles are designed to run primarily on roads, to have seating for one to eight people, to typically have four wheels, and to be constructed principally f...
s of all kinds, truck
Truck

File:Red truck USA.JPGA truck is a type of motor vehicle commonly used for carrying goods and materials. Some light trucks are relatively small, similar in size to a passenger automobile....
s, train
Train

A train is a connected series of vehicles that move along a track to rail transport from one place to another. The track usually consists of two rail tracks, but might also be a monorail or magnetic levitation train guideway....
s, motorcycle
Motorcycle

A motorcycle is a Single track, two-wheeled motor vehicle powered by an Motorcycle engine. Motorcycles vary considerably depending on the task for which they are designed, such as Touring motorcycle travel, navigating Naked bike, Cruiser , Motorcycle sport and Motorbike racing, or off-road conditions....
s, and bicycle
Bicycle

The bicycle, bike, or cycle is a pedal-driven, human-powered transport with two bicycle wheel attached to a bicycle frame, one behind the other....
s. Baggage cart
Baggage cart

Baggage carts, Luggage carts or Trolleys are small vehicles pushed by travelers to carry individual luggage, mostly suitcases. There are two major sizes: One for big luggage and one for small luggage....
s and shopping cart
Shopping cart

A shopping cart is a cart supplied by a Retailing#Shops and stores, especially a supermarket, for use by customers inside the shop for transport of merchandise to the check-out counter during shopping, and often to the customer's car after paying as well....
s may have them for use on a moving ramp.

Some aeroplane
Fixed-wing aircraft

A fixed-wing aircraft is an aircraft capable of heavier-than-air flight whose Lift is generated not by wing motion relative to the aircraft, but by forward motion through the air....
s are fitted with wheel brakes on the undercarriage
Undercarriage

In aviation, the undercarriage or landing gear is the structure that supports an aircraft on the ground and allows it to taxiing....
. Some aircraft also feature air brakes
Air brake (aircraft)

In aeronautics, air brakes are a type of flight controls used on an aircraft to reduce speed during landing.Air brakes differ from Spoiler in that air brakes are designed to increase Drag while making little change to lift , whereas spoilers greatly reduce the lift-to-drag ratio and a higher angle of attack required to maintain lift, re...
 designed to retard their speed down in flight. Notable examples include glider
Glider

Heavier-than-air unpowered aircraft do not need propulsion once airborne. Gliders, balloons and kites are unpowered aircraft.Gliders such as gliders, hang gliders and paragliders gain their initial flying speed from some launch mechanism, and then gain additional energy from gravity and from updrafts such as thermal currents....
s and some WWII
World War II

World War II, or the Second World War , was a global military conflict which involved a Participants in World War II, including all of the great powers, organised into two opposing military alliances: the Allies of World War II and the Axis powers....
-era aircraft, primarily some fighter
Fighter aircraft

A fighter aircraft is a military aircraft designed primarily for air-to-air combat with other aircraft, as opposed to a bomber, which is designed primarily to attack ground targets by dropping bombs....
s and many dive bombers of the era. These allow the aircraft to maintain a safe speed in a steep descent. The Saab B 17
Saab 17

The Saab 17 was a Sweden bomber-reconnaissance aircraft....
 dive bomber
Dive bomber

A dive bomber is a bomber aircraft that dives directly at its targets in order to provide greater accuracy and limit the exposure to and effectiveness of Anti-aircraft warfare fire....
 used the deployed undercarriage as an air brake.

Deceleration and avoiding acceleration
Acceleration

File:Acceleration.JPGFile:Acceleration components.JPGIn physics, and more specifically kinematics, acceleration is the change in velocity over time....
 when going downhill can also be achieved by using a low gear
Gear

A gear is a component within a Transmission device that transmits rotational force to another gear or device. A gear is different from a pulley in that a gear is a round wheel that has linkages that mesh with other gear teeth, allowing force to be fully transferred without slippage....
; see engine braking
Engine braking

Engine braking is the act of using the energy-requiring compression phase of a heat engine to dissipate energy and slow down a vehicle. Compression braking is a common legal term for the same mechanism....
.

Friction brakes
Vehicle brake

A vehicle brake is used to slow down a vehicle by converting its kinetic energy into heat. The basic hydraulic system, most commonly used, usually has six main stages....
 on cars store the heat in the rotating part (drum brake
Drum brake

A drum brake is a brake in which the friction is caused by a set of Brake shoe or Brake pad that press against the Brake lining of a rotating drum....
 or disc brake
Disc brake

The disc brake or disk brake is a device for slowing or stopping the rotation of a wheel. A brake disc , usually made of cast iron or ceramic composites , is connected to the wheel and/or the axle....
) during the brake application and release it to the air gradually.

Effects on noise pollution

The action of braking for motor vehicles produces recognizable sound level emissions, varying with the specific tire types and with the roadway surface type produces considerable effect upon sound levels or noise pollution
Noise pollution

Noise pollution is displeasing human-, animal- or machine-created sound that disrupts the activity or balance of human or animal life. A common form of noise pollution is from transportation, principally motor vehicles....
 emanating from moving vehicles. There is a considerable range in acoustical intensities produced depending upon the specific tire tread design and the rapidity of deceleration required to slow the vehicle.

Hypermiling

Because braking (absent regenerative braking) converts kinetic energy into heat energy, it wastes energy that was used earlier to gather speed. Additionally, regenerative braking is not 100% efficient at recovering energy. Some drivers use various techniques to minimize braking to save fuel (see hypermiling
Hypermiling

Hypermiling is a term used in North America that refers to a set of techniques used to Fuel economy-maximizing behaviors. Those who practice the techniques are referred to as "hypermilers."...
).

See also

  • Archaic past tense of break (see brake)
  • Air brake (aircraft)
    Air brake (aircraft)

    In aeronautics, air brakes are a type of flight controls used on an aircraft to reduce speed during landing.Air brakes differ from Spoiler in that air brakes are designed to increase Drag while making little change to lift , whereas spoilers greatly reduce the lift-to-drag ratio and a higher angle of attack required to maintain lift, re...
  • Air brake (rail)
    Air brake (rail)

    An air brake is a conveyance brake applied by means of Gas compressor. Modern trains rely upon a fail-safe air brake system that is based upon a design patented by George Westinghouse on March 5, 1872....
  • Air brake (road vehicle)
    Air brake (road vehicle)

    Air brakes are used in trucks, buses, Trailer , and semi-trailers. George Westinghouse first developed Air brake for use in railway service. A safer air brake was patented by him on March 5, 1872....
  • Anchor
    Anchor

    An anchor is an object, often made out of metal, that is used to attach a ship to the bottom of a body of water at a specific point. There are two primary classes of anchors?temporary and permanent....
  • Bicycle brake systems
    Bicycle brake systems

    Bicycle brake systems are used to slow down,or brake a bicycle. There have been various types through history, and several are still in use today....
  • Brake-by-wire
    Brake-by-wire

    Drive-by-wire technology in automotive industry replaces the traditional mechanical and hydraulic control systems with electronic control systems using electromechanical actuators and human-machine interfaces such as pedal and steering feel emulators....
     (or electromechanical braking)
  • Brake lining
    Brake lining

    Brake linings are the consumable surfaces in brake systems, especially drum brakes as those used in vehicles....
  • Brake bleeding
    Brake bleeding

    Brake bleeding is the procedure performed on hydraulic brake systems whereby the brake lines are purged of any air bubbles. This is necessary because, while the brake fluid is an Physical compression liquid, air bubbles are Physical compression gas and their presence in the brake system greatly reduces the hydraulic pressure that can be de...
  • Brake pad
  • Brake shoe
    Brake shoe

    A Brake shoe is the part of a braking system which carries the brake lining or the brake block in Brake brakes and bicycle brakes....
  • Breeching (tack)
    Breeching (tack)

    Breeching is a strap around the haunches of a draught animal, pack animal or riding animal. Both under saddle and in harness, breeching engages when an animal slows down or travels downhill and is used to brake or stabilize a load....
  • Bundy tube
    Bundy tube

    Bundy tube, sometimes called Bundy pipe, is type of double-walled low-carbon steel tube manufactured by rolling a copper-coated steel strip through 720 degrees and resistance brazing the overlapped seam in a process called Bundywelding....
  • Disc brake
    Disc brake

    The disc brake or disk brake is a device for slowing or stopping the rotation of a wheel. A brake disc , usually made of cast iron or ceramic composites , is connected to the wheel and/or the axle....
  • Drum brake
    Drum brake

    A drum brake is a brake in which the friction is caused by a set of Brake shoe or Brake pad that press against the Brake lining of a rotating drum....
  • Electromagnetic brake
    Electromagnetic brake

    An eddy current brake, like a conventional friction brake, is responsible for slowing an object, such as a train or a roller coaster. Unlike friction brakes, which apply pressure on two separate objects, eddy current brakes slow an object by creating eddy currents through electromagnetic induction which create resistance, and in turn either...
  • Electronic Parking Brake
  • Engine braking
    Engine braking

    Engine braking is the act of using the energy-requiring compression phase of a heat engine to dissipate energy and slow down a vehicle. Compression braking is a common legal term for the same mechanism....
  • Hand brake
    Hand brake

    In cars, the hand brake is a latching brake usually used to keep the car stationary. Automobile e-brakes usually consist of a cable directly connected to the brake mechanism on one end and to some type of lever that can be actuated by the driver on the other end....
  • Hydraulic brake
    Hydraulic brake

    The hydraulic brake is an arrangement of brake mechanism which uses brake fluid, typically containing ethylene glycol, to transfer pressure from the controlling unit, which is usually near the operator of the vehicle, to the actual brake mechanism, which is usually at or near the wheel of the vehicle....
  • Jake brake
    Jake brake

    Jake Brake, or Jacobs Brake, describes a particular brand of engine brake manufactured and sold by Jacobs Vehicle Systems, Inc.. While the term Jake Brake technically only describes Jake Brake brand engine brakes, it has become a genericized trademark and is often used to refer to engine brakes or compression release engine brakes i...
     also known as J braking
  • Line lock
    Line lock

    A line lock is a device that allows you to lock the front Vehicle brake independently of the rear brakes via a switch. The device is an electric solenoid that controls a valve which is placed on the front brake line, and is controlled by a switch....
  • Overrun brake
    Overrun brake

    An overrun brake is a brake system commonly used on trailer , where the motion of the trailer with respect to the towing vehicle is used to actuate the brake....
  • Parking brake
  • Railway brake
  • Regenerative braking
  • Threshold braking
    Threshold braking

    Threshold braking or limit braking is a driving technique most commonly used in motor racing, but also practised in road vehicles to slow a vehicle at the optimum rate using the brakes....
  • Trail braking
    Trail braking

    Trail braking is a motorcycle riding and driving technique where the brakes are used beyond the entrance to a turn and are gradually released up to the point of apex ....
  • Vehicle brake
    Vehicle brake

    A vehicle brake is used to slow down a vehicle by converting its kinetic energy into heat. The basic hydraulic system, most commonly used, usually has six main stages....


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