Function Of Ei Sensor - HYOSUNG GV250 EI Service Manual

FUNCTION OF EI SENSOR

★ ★ ECU (Engine Control Unit, EI Control Unit)
: ECU decide the fuel injection volume and ignition time to adjust the fuel injector opening and closing rate
which is considered the engine speed, intake air pressure, intake air volume, engine temperature, oxygen
volume and throttle opening angle, etc.
★ ★ EI (Electric fuel Injector)
: EI spray the fuel to intake pipe by ECU's injection signal.
Fuel which is needed combustion in the combustion chamber is supplied from the fuel tank.
★ ★ ET sensor (Engine Temperature Sensor : ETS)
: ET sensor communicate the perceived engine temperature to ECU.
ET sensor is located the outside of the cylinder to measure the engine temperature.
★ ★ GP switch (Gear Position Switch)
: GP switch is used when start / stop and control ECU as the converted electrical signal of the gear position is
supplied ECU.
★ ★ IAP sensor (Intake Air Temperature : IAPS)
: IAP sensor measure the pressure which is generated from the intake pipe and compare with the provided
absolute pressure, then analogize the air volume indirectly and help to work the fuel injector properly.
★ ★ IAT sensor (Intake Air Temperature Sensor : IATS)
: IAT sensor perceive the atmospheric temperature and is located the air cleaner case.
★ ★ ISC solenoid (Idle Speed Control Solenoid)
: ISC solenoid is interlocked with the throttle body, so ECU control the engine idle speed.
★ ★ O
sensor (Oxygen Sensor : O
2
: O sensor measure the oxygen volume from the exhaust gas and convert the oxygen volume into voltage
2
value, then communicate the output voltage to ECU.
★ ★ Pick-up Coil
: Pick-up coil perceive the front and rear cylinder's engine speed and realtime of piston position.
★ ★ RO switch (Roll Over Switch)
: RO switch is the fuel cut-off system when the motorcycle is leaned over 60° for upset accident.
★ ★ SAV solenoid (Secondary Air Valve Solenoid)
: SAV solenoid supply the fresh air to the exhaust pipe for decrease of the exhaust gas.
★ ★ TP sensor (Throttle Position Sensor : TPS)
: TP sensor detect the throttle opening angle and is located the throttle body.
It decide the fuel injection volume and compensate the ignition time as inform idle·acceleration·
deceleration condition and throttle full opening etc. to ECU.
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GENERAL INFORMATION 1-8-1