Ignition system components

A presentation of Ignition System Components

1. ONIINTGI EMTSSY

2. Function of Ignition System Components REYMART B. TABELISMA TEACHER I- AUTOMOTIVE TECHNOLOGY

3. Objectives define Ignition system discuss the types, function, and parts of Ignition System appreciate and value the significance of Ignition System.

4. Technical Terms Circuit - a complete path of an electric current, including the current source. Winding - wire wound or coiled about an object such as an iron core or armature, that produces a magnetic field when current flows through it. Transistor - a solid state electronic device that can be use as an electric switch.

5. Technical Terms Volt - a unit of electrical pressure or force that will move a current of 1 ampere through a resistance of ohm 1. Voltage - a force which causes electrons to flow in a conductor the differences in electrical pressure between two parts in a circuit.

6. IGNITION SYSTEM It is a system that furnishes high voltage sparks to the engine cylinders to fire the compressed air-fuel mixture in the combustion chamber. the purpose of this system is to ignite the compressed air-fuel mixture.

7. Function of ignition system components The ignition system feeds high voltage surge to the spark plugs at proper time. The three major functions are: It must supply an electric spark with sufficient heat in order to ignite the air fuel mixture in the combustion chamber of the engine. It must maintain the spark long enough to permit the combustion of all fuel charges in the cylinder of the engine. It must draw the spark to each cylinder combustion can begin at specific time during the stroke of compression for every cylinder engine.

8. Two general types of Ignition system Contact point is an electric system, a set of stationary and movable parts which open and close to make or break the electric current.

9. Electronic ignition system it uses transistor and other semiconductor devices as an electric switch to turn the primary circuit or current ON and OFF.

10. Components of ignition system

11. Components of Ignition System Battery- a device for storing energy in chemical form that can be release as electricity. It serves as a source of electric current in an automobile.

12. Ignition Switch- it open and close the ignition coil primary circuit. IT may also used to open and close other electric circuit.

13. Ignition Resistor- a resistor connected into the ignition primary circuit to reduce battery voltage to the coil during engine operation.

14. Ignition Coil - the ignition system component that set as a transformer to step up(increase) the battery voltage into many thousands of volts.

15. Distributor - a device that distributes an electric current to the spark plug. The rotary switch that directs high voltage surges to the engine cylinders in the proper sequences.

16. Contact Point- it refers to the point in the distributor that opens & closes the primary circuit to build-up & collapse the magnet line of force.

17. Condenser - it is connected across the contact point to prevent arcing and burning. It also provides the storage of electricity when breaker point is open

18. Rotor - it is the rotating parts of the distributor assembly that distributes high voltage from coil center cable to different spark plug.

19. Distributor Cap- top cover of distributor assembly that prevents dirt or any particles from entering the delicate parts.

20. High Tension- it a secondary wire that include the coil wire and the spark plug wires.

21. Spark Plug- is the device that burn air-fuel mixture, which includes a pair of electrodes and an insulator, that provides a spark gap in the cylinders.

22. The Ignition System are Two interconnected electrical circuits. Primary ( low voltage ) • Battery • Ignition Switch • Ballast Resistor or resistance wire • Ignition coil primary winding • Condenser • Contact Point • Ground Secondary (high voltage circuits) • Ignition coil (Secondary winding) • Distributor cap • Rotor • Ignition cable or high tension wire • Spark plug

23. What you have learned? Identify the following pictures. Write your answer in activity/work sheet.

24. Assignment Functions of Ignition Coil Parts of Ignition Coil Procedure in Checking Ignition Coil Resistance