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TITLE PAGE
DESIGN AND FABRICATION OF AN ELECTRONIC IGNITION SYSTEM
BY
---
--/H2013/01430
DEPARTMENT OF ----
SCHOOL OF ---
INSTITUTE OF ---
DECEMBER,2018
APPROVAL PAGE
This is to certify that the research work, " design and fabrication of an electronic ignition system" by ---, Reg. No. --/H2007/01430 submitted in partial fulfillment of the requirement award of a Higher National Diploma on --- has been approved.
By
--- . ---
Supervisor Head of Department.
Signature………………. Signature……………….
……………………………….
---
External Invigilator
DEDICATION
This project is dedicated to Almighty God for his protection, kindness, strength over my life throughout the period and also to my --- for his financial support and moral care towards me.Also to my mentor --- for her academic advice she often gives to me. May Almighty God shield them from the peril of this world and bless their entire endeavour Amen.
ACKNOWLEDGEMENT
The successful completion of this project work could not have been a reality without the encouragement of my --- and other people. My immensely appreciation goes to my humble and able supervisor mr. --- for his kindness in supervising this project.
My warmest gratitude goes to my parents for their moral, spiritual and financial support throughout my study in this institution.
My appreciation goes to some of my lecturers among whom are Mr. ---, and Dr. ---. I also recognize the support of some of the staff of --- among whom are: The General Manager, Deputy General manager, the internal Auditor Mr. --- and the ---. Finally, my appreciation goes to my elder sister ---, my lovely friends mercy ---, ---, --- and many others who were quite helpful.
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The need for higher mileage, reduced emissions and greater reliability has led to the development of the electronic ignition systems. These systems generate a much stronger spark which is needed to ignite leaner fuel mixtures. Breaker point systems needed a resister to reduce the operating voltage of the primary circuit in order to prolong the life of the points. The primary circuit of the electronic ignition systems operates on full battery voltage which helps to develop a stronger spark. Spark plug gaps have widened due to the ability of the increased voltage to jump the larger gap. Cleaner combustion and fewer deposits have led to longer spark plug life.
Essentially, all electronic ignition systems operate in the following manner: With the ignition switch turned on, primary (battery) current flows from the battery through the ignition switch to the coil primary windings. Primary current is turned on and off by the action of the armature as it revolves past the pickup coil or sensor. As each tooth of the armature nears the pickup coil, it creates a voltage that signals the electronic module to turn off the coil primary current. A timing circuit in the module will turn the current on again after the coil field has collapsed. When the current is off, however, the magnetic field built up in the coil is allowed to collapse, which causes a high voltage in the secondary windings of the coil. It is now operating on the secondary ignition circuit, which is the same as in a conventional ignition system.
TABLE OF CONTENTS
COVER PAGE
TITLE PAGE
APPROVAL PAGE
DEDICATION
ACKNOWELDGEMENT
ABSTRACT
CHAPTER ONE
- INTRODUCTION
- BACKGROUND OF THE PROJECT
- PROBLEM STATEMENT
- AIM OF THE PROJECT
- SCOPE OF THE PROJECT
- SIGNIFICANCE OF THE PROJECT
- ADVANTAGES OF THE PROJECT
- ADVANTAGES OF THE PROJECT
- APPLICATION
- METHODOLOGY
- PROJECT ORGANISATION
CHAPTER TWO
LITERATURE REVIEW
- OVERVIEW OF IGNITION SYSTEM
- HISTORICAL BACKGROUND OF THE STUDY
- REVIEW OF MODERN IGNITION SYSTEMS
CHAPTER THREE
METHODOLOGY
- SYSTEM BLOCK DIAGRAM
- SYSTEM CIRCUIT DIAGRAM
- CIRCUIT DESCRIPTION
- SPARK PLUG/DISTRIBUTOR CONNECTION
- CIRCUIT OPERATION
- CONSTRUCTION SAFETY MEASURES
CHAPTER FOUR
4.0 TEST AND RESULT ANALYSIS
- CONSTRUCTION PROCEDURE AND TESTING ANALYSIS
- CASING AND PACKAGING
- ASSEMBLING OF SECTIONS
- TESTING OF SYSTEM OPERATION
- INSTALLATION OF THE COMPLETED DESIGN
CHAPTER FIVE
- CONCLUSION
- RECOMMENDATION
- REFERENCES
CHAPTER ONE
1.0 INTRODUCTION
1.1 BACKGROUND OF THE STUDY
In an automobile engine, in case of Internal Combustion (IC) engines, combustion of air and fuel takes place inside the engine cylinder and the products of combustion expand to produce reciprocating motion of the piston. This reciprocating motion of the piston is in turn converted into rotary motion of the crank shaft through connecting rod and crank.
This rotary motion of the crank shaft is in turn used to drive the generators for generating power.
We also know that there are 4-cycles of operations viz., suction; compression; power generation and exhaust.
These operations are performed either during the 2-strokes of piston or during 4-strokes of the piston and accordingly they are called as 2-stroke cycle engines and 4-stroke cycle engines.
In case of petrol engines during suction operation, charge of air and petrol fuel will be taken in. During compression this charge is compressed by the upward moving piston. And just before the end of compression, the charge of air and petrol fuel will be ignited by means of the spark produced by means of for spark plug. And the ignition system does the function of producing the spark in case of spark ignition engines.
Spark plug used with petrol engines mainly consists of a central electrode and metal tongue. Central electrode is covered by means of porcelain insulating material. Through the metal screw the spark plug is fitted in the cylinder head plug. When the high tension voltage of the order of 30000 volts is applied across the spark electrodes, current jumps from one electrode to another producing a spark.
Whereas in case of diesel (Compression Ignition—CI) engines only air is taken in during suction operation and in compressed during compression operation and just before the end of compression, when diesel fuel is injected it gets ignited due to heat of compression of air.
In an internal combustion engine, combustion is a continuous cycle and occurs thousands times in a minute so an effective and accurate source of ignition is required. The idea of spark ignition came from a toy electric pistol that used electric spark to ignite a mixture of hydrogen and air to shoot a cork.
The electronic ignition system is the type of ignition system that uses electronic circuits, usually by transistors controlled by sensors to generate electric pulses which in turn generate the better spark that can even burn the lean mixture and provide better economy and lower emission. The main aim of this work is to build such an electronic ignition system.
1.2 PROBLEM STATEMENT
Since in the modern automobile new technologies are introduced and it is found that use of electronic component gives more effective and accurate outputs than that of mechanical components so the use of electronic controlled unit becomes essential to fulfill the needs of modern high power and high speed automobiles or hyper series of automobiles, so to fulfill the need for high performance, high mileage and greater reliability has led to the development of Electronic ignition system.
1.3 AIM OF THE STUDY
The main aim of this work is to create an electric spark in the engine combustion chamber, at exactly the right time, which will ignite the mixture of petrol and air using electronic module.
1.4 SCOPE OF THE STUDY
When the start key is switched on the electric supply is given to the controller (transistors) which acts as a switching device. The switching device used to amplify or switch electronic signals that power the ignition coil. Ignition coil is nothing but the transformer. A transformer is a device that transfers electrical energy from one circuit to another. The sparks will be produced during the above process. This sparks helps for the ignition. Since the ignition process fully made with the help of electronics it is called as electronic ignition system.
1.5 SIGNIFICANCE OF THE PROJECT
In older carbureted cars, this system with the contact breaker (CB) point ignition system is used to fire the spark plugs. You can convert the ignition system of your car from CB-point-cum-condenser type into electronic using transistorised switching.
1.6 ADVANTAGES
- Quick process
- Simple in construction
- It has fewer moving parts.
- Low maintenance required.
- Less emission generates.
- Efficiency is good.
1.7 DISADVANTAGE
Initial cost is high
1.8 APPLICATION
- It can be used in automobiles
- This system used in aircraft engines.
- It also used in modern bikes and cars.
1.9 RESEARCH METHODOLOGY
In the course of carrying this study, numerous sources were used which most of them are by visiting libraries, consulting journal and news papers and online research which Google was the major source that was used.
1.10 PROJECT ORGANISATION
CHAPTER TWO: The chapter one of this work has been displayed above. The complete chapter two of " design and fabrication of an electronic ignition system" is also available. Order full work to download. Chapter two of " design and fabrication of an electronic ignition system" consists of the literature review. In this chapter all the related work on " design and fabrication of an electronic ignition system" was reviewed.
CHAPTER THREE: The complete chapter three of " design and fabrication of an electronic ignition system" is available. Order full work to download. Chapter three of " design and fabrication of an electronic ignition system" consists of the methodology. In this chapter all the method used in carrying out this work was discussed.
CHAPTER FOUR: The complete chapter four of " design and fabrication of an electronic ignition system" is available. Order full work to download. Chapter four of " design and fabrication of an electronic ignition system" consists of all the test conducted during the work and the result gotten after the whole work
CHAPTER FIVE: The complete chapter five of design and construction of a " design and fabrication of an electronic ignition system" is available. Order full work to download. Chapter five of " design and fabrication of an electronic ignition system" consist of conclusion, recommendation and references.
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