Hisun HS500 Owner's Manual page 114

1. Idle speed stepper motor
2. Air damper degree sensor
3. Throttle
Air damper
For the purpose of adjustment of air intake
volume.
Idle speed stepper motor
To stabilize the idle speed
Periodic Maintenance and Adjustment
Fuel injector
Inject the fuel into the cylinder
Intake air temperature sensor
Inspect engine intake
according to the temperature, ECU will
automatically adjust the fuel injection volume.
Air intake pipe pressure sensor
For testing the negative pressure of the air
intake pipe, engine has the different working
conditions, the 2 parameters- opening of air
damper and pressure of air intake determine
the engine's working condition, ECU will
adjust the fuel injection volume according to
different negative pressure and opening of
air damper. Adjust the engine fuel injection
volume can adjust the output power and
output torque.
Water temperature sensor
For testing cooling water temperature,
8-11
air temperature,