2. INTRODUCTION
Ignition systems are mainly of two types;
I. Spark ignition system
II. Compression ignition system
An ignition system obeys laws of conservation of energy.
Hence it can be treated as a balance of energy between;
i. That provided by an external source
ii. That released by chemical reaction
iii. That dissipated to the surroundings as thermal energy
3. REQUIREMENTS OF AN IGNITION SYSTEM
It should provide a good spark between the
electrodes of the plugs at the correct timing
It should function efficiently over the entire range of
engine speed.
It should be light, effective & reliable in service.
It should be compact and easy to maintain.
It should be cheap and convenient to handle.
4. TYPES OF IGNITION SYSTEMS
The ignition systems are classified depending
upon how the primary energy for operating the
circuit is made available as:
I. Battery Ignition System
II. Magneto ignition system
5. Battery Ignition System
Components of Battery Ignition System
o Battery
o Ignition switch
o Ballast resistor
o Contact breaker
o Capacitor
o Distributor
13. Advantages
Reduced ignition system maintenance
Reduced wear of the components
Increased reliability
Extended spark plug life
Improved ignition of lean mixture