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3. Fuel Injection System
Air injection solenoid valve (AISV)
Function: AISV introduces appropriate air quantity to reduce pollutant emission.
Basic principle: When the engine RPM and throttle opening are higher than the default value,
ECU controls AISV opening or closure.
Fresh air
ECU
Power relay
AISV
Reed valve
Battery
Power relay
AISV
ECU
3-11
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