VIDYAA VIKAS

COLLEGE OF ENGINEERING & TECHNOLOGY

DEPARTMENT OF MECHANICAL ENGINEERING

PNEUMATIC BIKE

PREPARED BY,

PRAVINTH.A

WHAT

IS

PNEUMATIC

BIKE ?

INTRODUCTION

The vehicle uses fluid system instead of the

Internal Combustion engine.

Will help save the non-renewable sources

of energy.

Will help in reducing the problem of global

warming since two wheelers contribute to

the problem the most.

WORKING METHODOLOGY

Reciprocating piston of pneumatic cylinder drives

the crank shaft.

Power system consists of electric motor and

pneumatic cylinder.

Electric system helps in overcoming the initial

torque to drive the vehicle with load.

Electric motor is active until about 20 km/hr.

Switchover of power to pneumatic cylinder takes place by

relay operations.

Torque sensor is the transducer.

Torque sensor converts the torque acting on the wheel

into analog signal.

Analog signals are sent to relays thereby playing an

immigrant part in switchover of power from electric motor

to pneumatic cylinder.

PNEUMATIC CYLINDER WORKING:

Piston of pneumatic cylinder made to reciprocate

continuously by means of sensors.

Sensors (reed switches ) are placed at either end of

pneumatic cylinder.

Solenoids and solenoid valve control movement of piston

of pneumatic cylinder.

PART NO. PART NAME

1 4/3 SOLENOID

2,3 SOLENOID

4 CYLINDER

5 PISTON

6,7 REED SWITCHES

8 CONNECTING

ROD

9 CRANK SHAFT

INDEX OF PNEUMATIC SYSTEM

Signals are fed to the solenoid valve by sensors.

The piston reciprocates based upon the side from the

signal is fed from the cylinder to the solenoid valve.

The reed switches are of high precision and accuracy

thereby giving approximately 450 strokes/min.

SPEED AND BRAKING

Speed is regulated by means of metering valve.

It meters the flow of air inside the cylinder.

Valve can be used to regulate the flow.

That is increase as well as decrease.

Braking is used to stop the vehicle at instantaneous

hindrances.

Is achieved by the metering valve which completely stops

the air flow.

Optimal design is achieved by considering the various

design parameters.

DESIGN PARAMETERS

The various design parameters are:

1. Piston Diameter : The piston dia = 25mm

2. Flow Rate From Compressor : The flow rate required

from the compressor is 0.25 L/s.

3. Power : The power delivered after initial torque is

overcome is about 0.89HP-1 HP.

4. Torque : It is the essential parameter T= 3.15 N-m is

produced after initial torque is overcome.

5. Speed : The wheel rpm is made proportional to

engine rpm.

6. The max speed is about 51 km/hr.

SALIENT FEATURES

1. Pollution free.

2. Light on the pocket.

3. Helps conserve gasoline.

4. Dynamic braking.

5. Reverse rotation capability.

6. Exhaust air sent back to atmosphere.

DRAWBACKS

Can’t take large load.

Low pick-up.

CONCLUSION

Even though the vehicle is in its early stages of development, It holds a lot of promise and provides scope for further research.

ANY QUERIES??