Sym MAXSYM 400i - Air Injection Solenoid Valve (AISV)

4. Fuel Injection System
4-12
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.
AISV
Reed valve
Fresh air
Power relay
Battery
ECU
ECU
To this chapter contents
Air Injection
Solenoid Valve
Power relay