2. Department of Mechanical
Engineering .

3. ST. MARY’S
College of
Engineering &
Technology.

4. Introduction:
This talk will begin by
explaining the concept ,the
development of bicycle to be
result of self charged moving
vehicle .

5. 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.

6. Competencies:TECHNICAL KNOWLEDGE,
DESIGN.

7. Parts of project:
 BICYCLE
 DC BRUSHLESS MOTOR ( 24volts and 250watts)
 GEAR MECHANISM
 Alternator
 CONTROL SYSTEMS
 AUXILARIES
 STEP UP TRANSFORMER
 BATTERIES
 ACCESORIES

8. DC BRUSHLESS MOTOR : ( input 24volts and
250watts)

9. 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.

10. BICYCLE

11. GEAR MECHANISM

12. 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 teeth’s 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.

13. Alternator
alternator is an electrical generator
that converts mechanical energy to
electrical energy in the form of
alternating current.

14. the alternator is connected to the
front tire and generate the power
and stored in to the battery

15. Control systems
Handle
Brake system

16. 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.

17. AUXILIARIES
 Start circuit
 Horn circuit
 Indicator circuit
 Light circuit
 charging circuits
The above circuits perform their functions
with its ancillary devices.

18. STEP UP TRANSFORMER

19. 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”.

20. BATTERIES

21. Battery
Battery is a device which converts
chemical energy in to electrical energy
It is made up of no of cells

22. 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

23. 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.

24. ACCESORIES
 Speed meter
 Volt meter

25. 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 doesn’t rotate because
the sprockets is rotate same direction of vehicle
movement.

26. 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.

27. 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.

28. •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

29. 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.

30. Conclusion:
We are conclude this project
as much as our knowledge and
possibilities.