Fl
SYSTEM
DIAGNOSIS
4-9
FI SYSTEM TECHNICAL FEATURES
INJECTION TIME (INJECTION VOLUME)
The factors to determine the injection time include the basic fuel injection time, which is calculated on the
basis of intake air pressure, engine speed and throttle opening angle, and various compensations.
These compensations are determined according to the signals from various sensors that detect the engine
and driving conditions.
I
Intake Air Pressure
Intake air pressure
Sensor (IAP Sensor) signal
I
Basic
Crankshaft Position Engine speed
Sensor (CKP Sensor) signal injection
time
Throttle Position
Throttle opening
Sensor (TP Sensor)
signal
Various
Sensors
Various signals
I I
=-I
Compensation
h
I
Ultimate
Injection signal
Injectors
injection
I
time
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