Bennche Bighorn 400 Owner's Manual page 110

1. Throttle
2. Idle speed stepper motor
3. Intake temperature sensor/pressure sensor
4. Air damper degree sensor
Air damper
For the purpose of adjustment of air intake
volume.
Idle speed stepper motor
To stabilize the idle speed
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
Periodic Maintenance and Adjustment
air temperature,
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,
according to the temperature difference,
ECU will automatically revise fuel injection
volume, to ensure the smooth operation of
the engine all the time.
Ignition signal
Ignition signal arising from the magneto to
provide the ECU with correct ignition timing signal.
ECU
It is the core of EFI system, it used a
specially designed micro computer chip as a
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