Sym RV 250i - Page 62

4. Fuel Injection System
4-13
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.
A
ISV
Reed valve
Fresh ai
r
Power relay
Battery
ECU
ECU
To this chapter contents
A
ir Injection
Solenoid Valve
Power relay