02-08-2014, 11:17 AM
Electromagnetic Brake
[attachment=66495]
Abstract
Now days, the lot’s of new technologies are arriving in world. They create a lot of effect. Most of industries got their new faces due to this arrival of technologies. Automobile industry is also one of them. There is a boom in world’s automobile industry, so lot’s of research is also going here. As an important part of automobile, there are also innovations in brakes. Electromagnetic brakes is one of them.
Electromagnetic brakes is a new revolutionary concept. Electromagnetic brakes are the brakes working on electric power & magnetic power. They works on the principle of electromagnetism. These are totally frictionless. Due to this, they are more durable & have longer life span. Less maintenance is there. These brakes are an excellent replacement on the conventional brakes due to their many advantages. The reason for implementing this brake in automobiles is to reduce wear in brakes as it is frictionless. Therefore there will also be no heat loss. It can be used in heavy vehicles as well as in light vehicles. The electromagnetic brakes are much effective than conventional brakes & the time taken for application of brakes are also smaller. There is very few need of lubrication. Electromagnetic brakes gives better performance with less cost which is today’s need. There are also many more advantages of Electromagnetic brakes. That’s why Electromagnetic brakes are an excellent replacement on conventional brakes. Electromagnetic brakes are the need of today’s automobiles.
A electromagnetic braking system for automobiles like cars, an effective braking system. And, by using this electro magnetic brakes, we can increases the life of the braking unit. The working principle of this system is that when the magnetic flux passes through and perpendicular to the rotating wheel the eddy current is induced in the rotating wheel or rotor. This eddy current flows opposite to the rotating wheel/rotor direction. This eddy current trying to stop the rotating wheel or rotor. This results in the rotating wheel or rotor comes to rest/ neutral.
Introduction
Now a days , there is lot of competition in the market. So there is need of developing a new method or process for effective manufacturing .That process or methods should fulfill the requirement about accuracy productivity etc.It is necessary to reduce the total machine time & reduces its weight .There are various ways by which the total machining time can be effectively minimized .There are various time consuming steps or sab process .which can be minimize by various methods
Electromagnetic brakes (also called electro-mechanical brakes or EM brakes) slow or stop motion using electromagnetic force to apply mechanical resistance (friction). The original name was "electro-mechanical brakes" but over the years the name changed to "electromagnetic brakes", referring to their actuation method. Since becoming popular in the mid-20th century especially in trains and trolleys, the variety of applications and brake designs has increased dramatically, but the basic operation remains the same.
Both electromagnetic brakes and eddy current brakes use electromagnetic force but electromagnetic brakes ultimately depend on friction and eddy current brakes use magnetic force directly.
electromagnetic breaking system are used in trucks, buses, trailers, and semi-trailers. georgewestinghouse first developed pneumatic with electromagnetic brakes for use in railway service. he patented a safer pneumatic with electromagnetic brake on march 5, 1872. originally designed and built for use on railroad train application, pneumatic with electromagnetic breaking system remain the exclusive systems in widespread use. westinghouse made numerous alterations to improve his pnumatic with electromagnetic pressured brake invention, which led to various forms of the automatic brake and the subsequent use on heavier road vehicles
electromagnetic under pressure (approx 100-125psi) to the brake chamber, causing the brake to reduce wheel rotation speed. Most types of truck pneumatic with electromagnetic breaking system are drum units, though there is an increasing trend towards the use of disc brakes in this application. The pnumatic with electromagnetic compressor pneumatic with electromagnetic draws filtered pneumatic with electromagnetic from the atmosphere and forces it into high-pressure reservoirs at around 120 PSI. Most heavy vehicles have a gauge within the driver's view, indicating the availability of pneumatic with electromagnetic pressure for safe vehicle operation, often including warning tones or lights. Setting of the parking/emergency brake releases the pressurized pneumatic with electromagnetic pressure in the lines between the compressed pneumatic with electromagnetic storage tank and the brakes, thus actuating the (spring break) parking braking hardware.An pneumatic with electromagnetic pressure failure at any point would apply full spring break pressure immediately.
Brakes are applied by pushing down the brake pedal. (It is also called the foot valve or treadle valve.) Pushing the pedal down harder applies more pneumatic with electromagnetic pressure. Letting up on the brake pedal reduces the pneumatic with electromagnetic pressure and releases the brakes. Releasing the brakes lets some compressed pneumatic with electromagnetic go out of the system, so the pneumatic with electromagnetic pressure in the tanks is reduced. It must be made up by the pneumatic with electromagnetic compressor. Pressing and releasing the pedal unnecessarily can let pneumatic with electromagnetic out faster than the compressor can replace it. If the pressure gets too low, the brakes won't work.
These large vehicles also have an emergency brake system, in which the compressed pneumatic with electromagnetic holds back a mechanical force (usually a spring) which will otherwise engage the brakes.[2] Hence, if pneumatic with electromagnetic pressure is lost for any reason, the brakes will engage and bring the vehicle to a stop.
A compressed pneumatic with electromagnetic brake system is divided into a supply system and a control system. The supply system compresses, stores and supplies high-pressure pneumatic with electromagnetic to the control system as well as to additional pneumatic with electromagnetic operated auxiliary truck systems (gearbox shift control, clutch pedal pneumatic with electromagnetic assistance servo, etc.).
“Over simplified" pneumatic with electromagnetic brake diagram on a commercial road vehicle (does not show all pneumatic with electromagnetic reservoirs and all applicable pneumatic with electromagnetic valves).
The pneumatic with electromagnetic compressor is driven off of the engine either by crankshaftpulley via a belt or directly off of the engine timing gears. It is lubricated and cooled by the engine lubrication and cooling systems. Compressed pneumatic with electromagnetic is first routed through a cooling coil and into an pneumatic with electromagnetic dryer which removes moisture and oil impurities and also may include a pressure regulator, safety valve and a smaller purge reservoir. As an alternative to the pneumatic with electromagnetic dryer, the supply system can be equipped with an anti freeze device and oil separator. The compressed pneumatic with electromagnetic is then stored in a reservoir (also called a wet tank) from which it is then distributed via a four way protection valve into the front and rear brake circuit pneumatic with electromagnetic reservoir, a parking brake reservoir and an auxiliary pneumatic with electromagnetic supply distribution point. The system also includes various check, pressure limiting, drain and safety valves.
. MAGNETS
A magnet is a ferrous substance having the property of attraction of the ferrous materials. Magnets are available naturally and are called load stones. The magnets can also be produced by artificial means. The properties of attraction are permanent in natural and the artificial magnets.
A magnet has two distance poles situated at either ends are called the magnets North pole and the South pole with respect to the earth’s north and south pole. The unlike poles attract while the like poles repel each other.
Advantages
Disadvantages
It cannot use grease/ oil A
low cost
Development Easy
Easy construction
Higher opt electromagnetic power
[attachment=66495]
Abstract
Now days, the lot’s of new technologies are arriving in world. They create a lot of effect. Most of industries got their new faces due to this arrival of technologies. Automobile industry is also one of them. There is a boom in world’s automobile industry, so lot’s of research is also going here. As an important part of automobile, there are also innovations in brakes. Electromagnetic brakes is one of them.
Electromagnetic brakes is a new revolutionary concept. Electromagnetic brakes are the brakes working on electric power & magnetic power. They works on the principle of electromagnetism. These are totally frictionless. Due to this, they are more durable & have longer life span. Less maintenance is there. These brakes are an excellent replacement on the conventional brakes due to their many advantages. The reason for implementing this brake in automobiles is to reduce wear in brakes as it is frictionless. Therefore there will also be no heat loss. It can be used in heavy vehicles as well as in light vehicles. The electromagnetic brakes are much effective than conventional brakes & the time taken for application of brakes are also smaller. There is very few need of lubrication. Electromagnetic brakes gives better performance with less cost which is today’s need. There are also many more advantages of Electromagnetic brakes. That’s why Electromagnetic brakes are an excellent replacement on conventional brakes. Electromagnetic brakes are the need of today’s automobiles.
A electromagnetic braking system for automobiles like cars, an effective braking system. And, by using this electro magnetic brakes, we can increases the life of the braking unit. The working principle of this system is that when the magnetic flux passes through and perpendicular to the rotating wheel the eddy current is induced in the rotating wheel or rotor. This eddy current flows opposite to the rotating wheel/rotor direction. This eddy current trying to stop the rotating wheel or rotor. This results in the rotating wheel or rotor comes to rest/ neutral.
Introduction
Now a days , there is lot of competition in the market. So there is need of developing a new method or process for effective manufacturing .That process or methods should fulfill the requirement about accuracy productivity etc.It is necessary to reduce the total machine time & reduces its weight .There are various ways by which the total machining time can be effectively minimized .There are various time consuming steps or sab process .which can be minimize by various methods
Electromagnetic brakes (also called electro-mechanical brakes or EM brakes) slow or stop motion using electromagnetic force to apply mechanical resistance (friction). The original name was "electro-mechanical brakes" but over the years the name changed to "electromagnetic brakes", referring to their actuation method. Since becoming popular in the mid-20th century especially in trains and trolleys, the variety of applications and brake designs has increased dramatically, but the basic operation remains the same.
Both electromagnetic brakes and eddy current brakes use electromagnetic force but electromagnetic brakes ultimately depend on friction and eddy current brakes use magnetic force directly.
electromagnetic breaking system are used in trucks, buses, trailers, and semi-trailers. georgewestinghouse first developed pneumatic with electromagnetic brakes for use in railway service. he patented a safer pneumatic with electromagnetic brake on march 5, 1872. originally designed and built for use on railroad train application, pneumatic with electromagnetic breaking system remain the exclusive systems in widespread use. westinghouse made numerous alterations to improve his pnumatic with electromagnetic pressured brake invention, which led to various forms of the automatic brake and the subsequent use on heavier road vehicles
electromagnetic under pressure (approx 100-125psi) to the brake chamber, causing the brake to reduce wheel rotation speed. Most types of truck pneumatic with electromagnetic breaking system are drum units, though there is an increasing trend towards the use of disc brakes in this application. The pnumatic with electromagnetic compressor pneumatic with electromagnetic draws filtered pneumatic with electromagnetic from the atmosphere and forces it into high-pressure reservoirs at around 120 PSI. Most heavy vehicles have a gauge within the driver's view, indicating the availability of pneumatic with electromagnetic pressure for safe vehicle operation, often including warning tones or lights. Setting of the parking/emergency brake releases the pressurized pneumatic with electromagnetic pressure in the lines between the compressed pneumatic with electromagnetic storage tank and the brakes, thus actuating the (spring break) parking braking hardware.An pneumatic with electromagnetic pressure failure at any point would apply full spring break pressure immediately.
Brakes are applied by pushing down the brake pedal. (It is also called the foot valve or treadle valve.) Pushing the pedal down harder applies more pneumatic with electromagnetic pressure. Letting up on the brake pedal reduces the pneumatic with electromagnetic pressure and releases the brakes. Releasing the brakes lets some compressed pneumatic with electromagnetic go out of the system, so the pneumatic with electromagnetic pressure in the tanks is reduced. It must be made up by the pneumatic with electromagnetic compressor. Pressing and releasing the pedal unnecessarily can let pneumatic with electromagnetic out faster than the compressor can replace it. If the pressure gets too low, the brakes won't work.
These large vehicles also have an emergency brake system, in which the compressed pneumatic with electromagnetic holds back a mechanical force (usually a spring) which will otherwise engage the brakes.[2] Hence, if pneumatic with electromagnetic pressure is lost for any reason, the brakes will engage and bring the vehicle to a stop.
A compressed pneumatic with electromagnetic brake system is divided into a supply system and a control system. The supply system compresses, stores and supplies high-pressure pneumatic with electromagnetic to the control system as well as to additional pneumatic with electromagnetic operated auxiliary truck systems (gearbox shift control, clutch pedal pneumatic with electromagnetic assistance servo, etc.).
“Over simplified" pneumatic with electromagnetic brake diagram on a commercial road vehicle (does not show all pneumatic with electromagnetic reservoirs and all applicable pneumatic with electromagnetic valves).
The pneumatic with electromagnetic compressor is driven off of the engine either by crankshaftpulley via a belt or directly off of the engine timing gears. It is lubricated and cooled by the engine lubrication and cooling systems. Compressed pneumatic with electromagnetic is first routed through a cooling coil and into an pneumatic with electromagnetic dryer which removes moisture and oil impurities and also may include a pressure regulator, safety valve and a smaller purge reservoir. As an alternative to the pneumatic with electromagnetic dryer, the supply system can be equipped with an anti freeze device and oil separator. The compressed pneumatic with electromagnetic is then stored in a reservoir (also called a wet tank) from which it is then distributed via a four way protection valve into the front and rear brake circuit pneumatic with electromagnetic reservoir, a parking brake reservoir and an auxiliary pneumatic with electromagnetic supply distribution point. The system also includes various check, pressure limiting, drain and safety valves.
. MAGNETS
A magnet is a ferrous substance having the property of attraction of the ferrous materials. Magnets are available naturally and are called load stones. The magnets can also be produced by artificial means. The properties of attraction are permanent in natural and the artificial magnets.
A magnet has two distance poles situated at either ends are called the magnets North pole and the South pole with respect to the earth’s north and south pole. The unlike poles attract while the like poles repel each other.
Advantages
Disadvantages
It cannot use grease/ oil A
low cost
Development Easy
Easy construction
Higher opt electromagnetic power