1F2-8 M161 ENGINE CONTROLS
This ignition system does not use a conventional
distributor and coil. It uses a crankshaft position sensor
input to the Engine Control Module (ECM). The ECM
then determines Electronic Spark Timing (EST) and
triggers the electronic ignition system ignition coil.
This type of distributorless ignition system uses a
''waste spark" method of spark distribution. Each
cylinder is paired with the cylinder that is opposite it
(2-3 or 1-4). The spark occurs simultaneously in the
cylinder coming up on the compression stroke and in
the cylinder coming up on the exhaust stroke. The
cylinder on the exhaust stroke requires very little of
IGNITION SYSTEM
the available energy to fire the spark plug. The remaining
energy is available to the spark plug in the cylinder on
the compression stroke.
These systems use the EST signal from the ECM to
control the EST. The ECM uses the following
information:
•
Engine load (mass air flow sensor).
•
Engine temperature.
•
Intake air temperature.
•
Crankshaft position.
•
Engine speed (rpm).
YAA1F910
SSANGYONG Y200