Electronic fuel injection system
This system operates based on a combination of the
throttle opening angle and engine speed, as well as a
combination of engine speed and air intake pressure.
When engine speed is low, that is from closed throttle to
ten degrees open, the fuel injection is determined by the
intake pressure and engine speed map.
From seven degrees throttle to fully open (high speed),
the volume of fuel injected is determined by the throttle
opening angle and engine speed map.
Between seven and ten degrees, where the fuel injection
volume depends on both intake air pressure and throttle
opening angle, the fuel injection volume is determined
more by the way of higher efficiency of the air detection.
Using signals provided by numerous sensors and coils,
the ECU controls the injection volume. This ensures the
required air:fuel ratio is provided at all speeds, including
starting, warm-up, rapid acceleration and deceleration.
Idle-speed
controller
Ignition
control
Idle-speed
control (ISC)
Fuel
control
Relay
control
Battery
Pulser
coil
Throttle
position
Engine
temperature
Intake air
temperature
Intake air
pressure
SENSORS
Main
Relay
Engine
control
module
Fuel TankFuel
Filter
Fuel
Pump
Fuel cooler
Pressure
regulator
Vapour
separator
Electric
Fuel Pump
Fuel
Rail
AIR
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