A Presentation for Automobile Engineering of sem 8

1. 0815024 BURHANUDDIN BHANPURA
0815040 IVAN KASOOKAR

2. HISTORY
 In 1907 Charles invented the First Point Ignition
Sytem
 In 1972 High Energy Ignition Sytem was
introduced
 In 1985 Direct Ignition System or also known as
Distributorless Ignition Sytem was introduced
by Padeack

3. ADVANTAGES
The main advantage with this system was that it provided
improved economy and performance with reduced
emissions. Other advantages included:
 Fewer moving parts (less parts to replace)
 More compact mounting
 Elimination of mechanical timing adjustments
 Less maintenance
 More coil cool down between firing events

4. COMPONENTS
 Crankshaft Timing Sensor: located in the front of the
crankshaft to trigger the ignition system. This sensor
consists of a single Hall effect magnetic switch
activated by 3 vanes on the crankshaft damper and
pulley assembly. This sensor sends a signal that
feeds timing and RPM information to the DIS and
computer module.

5. COMPONENTS
 Camshaft Sensor: it is driven by the camshaft and
provides information on the cylinder position for the
ignition coil and fuel system

6. COMPONENTS
 Ignition (DIS) Module: it receives
the signal from the crankshaft
sensor and the camshaft sensor.
It also receives the spark signal
from the vehicle's central
computer. Its major purpose is
to use the information supplied
to it to control the ignition coils.
The reason it does this is to
ensure that they fire in the
correct sequence. The DIS
module also controls the engine
dwell.

7. COMPONENTS
 Ignition Coil Pack: it is comprised of multiple ignition
coils. The DIS module controls these coils by means
of coil leads. The ignition coils fire two spark plugs
simultaneously; one on the compression stroke and
one on the exhaust stroke.

9. POINT IGNITION SYSTEM
 TUNE UP EVERY 12000 MILES

10. DIS
 NO WEARING

11. POINT IGNITION SYSTEM
 The
distributor coil
opens and
close to
charge and
discharge the
coil

12. DIS
CPS
communicates
to module
using the Hall
effect

13. TRIGGER WHEEL
CPS at 7 indicates piston is at TDC

14. DIS
•Pistons are always
matched in pairs
•Each coil fires two
cylinders
simultaneously

15. FLOW OF CURRENT
•Current in spark
plug of 1st cylinder
flows from center
electrode to ground
electrode
•Current then flows
from ground
electrode to center
electrode in the
second cylinder
spark plug

16. THANK YOU