HYOSUNG 2010 ST7 Service Manual page 113

⊙ ⊙ 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.
Intake Air Pressure Sensor
(IAP Sensor)
Pick-up coil
Throttle Position Sensor
(TP Sensor)
Various Sensors
Injectors
Intake air pressure signal
Engine speed signal
Throttle opening signal
Various signals
Injection signal
EI SYSTEM DIAGNOSIS 4-6
ECU
Basic
fuel
injection
time
Compensation
Ultimate
fuel
injection
time