1. 1. Department of Mechanical Engineering .
2. 2. ST. MARYS College of Engineering & Technology.
3. 3. Introduction: This talk will begin by explaining the concept ,the development of bicycle to be result of self charged moving vehicle .
4. 4. Working principle It is based upon the principle of mechanical energy converted into electrical energy by frictional method . The Rotary motion is converted into friction in between coil and magnets.
5. 5. Competencies:TECHNICAL KNOWLEDGE, DESIGN.
6. 6. Parts of project: BICYCLE DC BRUSHLESS MOTOR ( 24volts and 250watts) GEAR MECHANISM Alternator CONTROL SYSTEMS AUXILARIES STEP UP TRANSFORMER BATTERIES ACCESORIES
7. 7. DC BRUSHLESS MOTOR : ( input 24volts and 250watts)
8. 8. DC BRUSHLESS MOTOR : (input 24volts and 250watts) It is basedonthe principle offrictionin between thecoil andpermanentmagnet 24VDC200Welectric motor. Powerfulfourbrushpermanentmagnetelectric motordesign with100%ball bearingconstruction. It Includes 11toothsprocketfor#25chain.17" long powerleadswith 1/4"push-inconnectors. Shaftrotationreversible byreversing powerleads. Dimensions:4"wide x 3"long excluding shaft,4-1/4"long including shaft. Mounting bracketmeasures4-3/8"x2-1/4"with 4threadedmountingholes.Weight 3.8lbs.
9. 9. BICYCLE
10. 10. GEAR MECHANISM
11. 11. Basically gears are made of two circular discs of different sizes. Both of them are cut in the end to form numerous teeth like structures. When the smaller disc rotates, the tooth touches teeths the bigger disc making both to rotate. The smaller disc has to rotate many times to make the bigger disc rotate once. For example say the smaller disc has to rotate 30 times to make the bigger disc rotate 1 time the ratio is 30:1. This is known as Gear ratio. The speed of the bicycle depends mainly on this gear ratio.
12. 12. Alternator alternator is an electrical generator that converts mechanical energy to electrical energy in the form of alternating current.
13. 13. the alternator is connected to the front tire and generate the power and stored in to the battery
14. 14. Control systems Handle Brake system
15. 15. Control system The control systems are one of the most important component of the vehicle . The controls consistof handle system and brake system. The function of the handle system is to change the directionof vehicle . The function of the brake system is to slow down or stop the running vehicle.
16. 16. AUXILIARIES Start circuit Horn circuit Indicator circuit Light circuit charging circuits The above circuits perform their functions with its ancillary devices.
17. 17. STEP UP TRANSFORMER
18. 18. Step up transformer On a step-up transformer there are more turns on the secondary coil than the primary coil. The induced voltage across the secondary coil is greater than the applied voltage across the primary coil or in other words the voltage has been stepped-u p A step down transformer has less turns on the secondary coil that the primary coil. The induced voltage across the secondary coil is less the applied voltage across the primary coil or in other words the voltage is stepped-down.
19. 19. BATTERIES
20. 20. Battery Battery is a device which converts chemical energy in to electrical energy It is made up of no of cells
21. 21. Battery is placed on the cycle At first the battery is charged by the power source This battery is connected to the dc brushless motor
22. 22. Charging of batteries The charged is connected to an external electrical energy source. The source should be able to supply dc to the battery put to charging. When the electrical current passes through the battery, the chemical reactions which takes place inside the battery would convert the electrical energy into chemical energy.
23. 23. ACCESORIES Speed meter Volt meter
24. 24. How does it work? It consists of several parts: cycling system (part of the traditional bicycle), battery, controller (sends power to the motor with the help of a twisting mechanism), electric motor . The motor is supplied with power from the battery, which is rechargeable by the help of alternator (which is used in the car to produce electricity ). Although a solar panel can also be used. Certain modern motors can be charged while riding down hill. When the motor receive power from battery through the twister it starts the motion which helps to vehicle to run on road for motion for long distances. When the rider stops pedal it doesnt rotate because the sprockets is rotate same direction of vehicle movement.
25. 25. How to stop the vehicle To stop the vehicle we need to release the twister in order to stop the motion of the motor then apply the brake for stop.
26. 26. Procedure It is utilized the stored power to push the vehicle. The powered motor is located at rear side and used to move the bicycle. Alternator is fixed at front side and generate the power, when the front wheel is rotated. These alternator are utilized to produce the power and stored the power in battery .This battery will store the energy and supply power to the rear motor . Here we use a device called as step up transformer for increase rate of flow of power to the battery as per battery requirement to charge, the voltage in battery.
27. 27. The vehicle contains two gears with their respective positions ,In that one gear is used for peddling and another gear is used for dc brushless motor. These two gears are interlinked with chain by method of mechanism. When the vehicle is switch on then the process of mechanism is directed towards vehicle start moving by accelerator. We can used control system as our requirement. We can also providing auxiliaries for betterment. The speed of the vehicle is shown in speedometer. The power is produced can be shown in the battery
28. 28. Merits: It is a self charging vehicle .It does not require fuel ,current repetitively. Sitting capacity is two . Performance of self charging vehicle is 100 KMPH. There is no harm full to nature . It does not causes air pollution. Suitable for middle class. Performance of the vehicle is good.
29. 29. Conclusion: We are conclude this project as much as our knowledge and possibilities.