1. Ignition Systems 2
DIS Ignition
Mr. Lombardi, Lombardo, Setter

2. DI and DIS DI
DIS
Distributor Ignition
Distributorless Ignition

3. Distributorless Ignition
DIS Parts
PCM
Coil Pack
ICM
Crank Sensor
Cam Sensor
Knock Sensor
MAP Sensor
Ignition Wires
Spark Plug

4. PCM or ECM The Brain of the modern ignition system
Controls the functions of the ignition system and whole car
Uses sensor info to create the primary circuit

5. ICM Takes place of the distributor
Receives signals (primary voltage) from PMC
Controls Dwell
Fires the Coils

6. Coil Amplifies primary circuit voltage from 12V to 50,000 plus.
Can be shared (pack) or one per cylinder

7. Crank Position Sensor
Essentially the same purpose as the ignition pickup and trigger wheel in an electronic distributor.
Generates a signal that the PCM needs to determine the position of the crankshaft and the number one cylinder.

8. Camshaft Position Sensor
Used to help the PCM determine the correct firing order.

9. Knock Sensor
Detects engine vibrations (detonation) so the PCM can retard timing

10. MAP Connected to the intake manifold to monitor intake vacuum.
PCM uses this signal to measure engine load so ignition timing can be advanced and retarded as needed.

11. Spark plug wires
There are several different Wire types and Manufactures depending on the application

12. High Tension Ignition Wires
There are three basic wire types
CARBON SUPPRESSION CONDUCTORS
SOLID CORE CONDUCTOR WIRES
"LOW-RESISTANCE" SPIRAL WIRES

13. Spark Plugs
Spark plugs come in different ..
heat ranges
Shapes
Sizes

14. The End