AUTOMATIC GEAR SHIFTING MECHANISM

FOR TWO WHEELER

PROJECT PHASE-I

A PROJECT REPORT

Submitted by

R.SRITHAR (090111810011)

V.BALAJI (090111810012)

M.VIVEK (090111810014)

A.SABAREESAN (090111810015)

In partial fulfillment for the award of the degree

Of

BACHELOR OF ENGINEERING

IN

MECHANICAL ENGINEERING

TAGORE INSTITUTE OF ENGINEERING & TECHNOLOGY

DEVIYAKURICHI-636 112

ANNA UNIVERSITY: CHENNAI 600 025

NOV/DEC 2012

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ANNA UNIVERSITY: CHENNAI 600 025

BONAFIDE CERTIFICATE

Certified that this project report “AUTOMATIC GEAR SHIFTING

MECHANISM FOR TWO WHEELER”Is the bonafide work of

“R.SRITHAR, V.BALAJI, M.VIVEK, A.SABAREESAN” Who carried out

the project work under my supervision.

SIGNATURE SIGNATURE

Mr.J.VENKADESH M.E., Mr.J.VENKADESH M.E.,

HEAD OF THE DEPARTMENT SUPERVISOR

Assistant Professor Assistant professor

Department of Mechanical Engineering Department of Mechanical Engineering

Tagore Institute of Engineering Tagore Institute of Engineering

and Technology, Salem. and Technology, Salem.

Submitted for the project viva-voce held at Tagore Institute of Engineering and Technology

on ……………..

………………………… ………………………..

Internal Examiner External Examiner

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ACKNOWLEDGEMENT

We express our sincere thanks to our beloved philanthropic MANAGEMENT

of Tagore institute of Engineering and Technology trust for having provided with

necessary resources to complete this project.

We extend our extreme gratitude always to our beloved visionary

Principal Dr. P.PRAKASAM, M.Tech., Ph.D., and thank him for his motivation and

moral support towards us to complete this project.

We express our deep sense of gratitude and profound thanks to

Mr.J.VENKATESH M.E., Head of Mechanical Engineering Department, for her

remarkable guidance which was an inspiration to us.

We have immense pleasure to express our hearty thanks to our beloved

Project Co-coordinator Mr.J.VENKADESH M.E., Assistant Professor of Mechanical

Engineering Department, for her unflinching support throughout our project .

We have privileged to thank our beloved supervisor

Mr.J.VENKADESH M.E., Assistant Professor of Mechanical Engineering

Department, for her enlightening thoughts and meticulous guidance that helped us in

doing our project.

We also express our gratefulness to our parents, faculty members and friends

for their affectionate blessings and loving cooperation at all stages of this academic

venture.

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ABSTRACT

This project titled as “Automatic Gear Shifting Mechanism for Two wheelers”. This

is a fabrication and implementation project. The project provides solution for gear shifting for

the Bikes. The passenger bikes that now ply on the road have transmission of manual type of

gear changing. The manual type of transmission is preferred for the perfect performance

without a loss in power but a compromise for comfortless.

In this type manual system of power transmission there is easiness of gear shifting but

there is a definite loss of power and mileage. The main objective of this project is to create a

mechanism to reduce the inconvenience caused when changing gears in the bikes. The gear

shifting is achieved by a simple modification to the gear box. This is a versatile pack, simple

and can be fitted to any bikes. Moreover the whole set up is small and requires a very small

space. This can sure be a standard fitment if proper marketing strategy is carried out.

The main purpose of this project is used to automate the gear changing mechanism in

vehicles. In this project we are doing the gear changing mechanism using with the help of

sensors & actuators. This is very useful for the gear changing mechanism in automobile

vehicles.

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CHAPTER-I

INTRODUCTION

The paper deals with the real time project, “Automatic Gear Shifting Mechanism for

Two wheelers” which was done in the academic year 2012- 2013. This project is aimed at

giving driver the convenience for gear shifting & better performance. The bike with this

project will have a stepper motor, microcontroller & sensors.

The clutch operation may or may not be put in the bike depending on the user. The power for

gear shifting is got from stepper motor. The power for stepper motor is from the battery. So a

bike with a battery fitment can be easily adaptable to this project. The project has been started

as a concept and it requires a lot more work to be done to put in a bike.

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CHAPTER-II

PROBLEM IDENTIFICATION

Whenever a project is carried out there is a reason behind it. The existing bikes now

pose some problems for the drivers. In the Manual Transmission, bikes the main problem for

the drivers is the gear shifting.

But the engineering concept behind this type of transmission paves way for higher power

transmission efficiency.

More over the mileage of the bikes and life is also more. These bikes do not give much of

comfortless for the drivers in the terms of using the gear lever and the clutch. These are the

problems in the Manual Transmission bikes.

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CHAPTER-III

LITERATURE REVIEW

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BLOCK DIAGRAM

FIGURE 1

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FIGURE 2

Electronic-Circuit diagram of Automatic Gear Shifting Mechanism

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CHAPTER-IV

WORKING

In this project we fixed a stepper motor for the gear engagement. The stepper motor is

coupled with the gear selector rod. The stepper motor is operated by the help of electric

supply and it’s controlled by the control unit.

The control unit is nothing but the micro-controller, a small chip that is pre-

programmed and feed in the chip for working of our project. The motor working (rotates) for

the increase the gear speed and to decrease the gear speed.

The second working of the project is clutch. The clutch is operated for electrical

power from the battery. And it is controlled by the electronic control module.

According to the speed of the vehicle, gear is engaged and dis engaged. For

determining the speed of the vehicle a speed sensors is placed in front wheel. The sensor

senses the speed & transfers the signal to the control unit, as per the program the control unit

actuates the stepper motor and clutch.

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CHAPTRER-V

CONCLUSION

This project yet to be completed.

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CHAPTER-VI

FEATURE WORK

The current status of the project is documentation & study. In future, we planned to

do fabrication, programming works.

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CHAPTER-VII

REFERENCES

1. J. Turner and K. Ramsay, “Review and development of electromechanical actuators

for improved transmission control and efficiency," SAE Technical Paper, no. 2004-

01-1322, 2004.

2. J. Deur, J. Asgari, D. Hrovat, and P. Kovac, “Modelling and analysis of automatic

transmission engagement dynamic-linear case," ASME Journal of Dynamic Systems,

Measurement, and Control, vol. 128, pp. 263-277, June 2006.

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