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The system controls the following parameters:
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Minimum functioning.
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Supply of air in the case of the engine missing.
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Correction of the air/fuel relation operating at minimum speeds at heights above
sea-level.
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Correction of the air/fuel relation in cold and hot starts. When the stepper is
activated it opens the valve more or less to allow a determined flow of air to flow
along a series of tubes in the throttle body group.
Injectors - positioned on the throttle body group. The engine is equipped with
three quadruple jet injectors. The quantity of the jets is constant, but the amount
of time that each injector remains open is variable. The duration of each injection
is calculated by the ECM on the basis of the data received from various sensors of
the system.
Ignition coils - Placed directly above the head of every sparking-plug. The ECM
controls the moment at which the coils are turned on or off. In calculating the
turning on time, the ECM allows the sparking-plug sufficient time to produce a
spark.
The coils are turned off at ignition in the time needed to have correct
conbustion.
Injection relay - situated near the ECM, below the saddle of the vehicle. When
ignition takes place, the main power relay is encouraged to supply a stable voltage
to the ECM. When turned off, the ECM maintains the main power relay in such a
way as to be able to accomplish the turning off procedure that includes:
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Inserting the data in the ECM memory.
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Supplying data about the position of the stepper engine of the air control valve.
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Activating the cooling fan until the engine is sufficiently cool.
At the moment in which all the turning off procedures are completed, the injection
relay turns itself off.
Fuel pump - placed in the fuel tank. The electric pump distributes the fuel in the
supply plant using a pressure adjustor at a constant pressure of 3.5 bar. The
pump rotates continuously while the engine is functioning and rotates for a brief
period when the engine is turned off so that the pressure of 3.5 bar is ensured as
soon as the engine is turned on.
Cooling fan - placed behind the radiator. The ECM activates and deactivates the
cooling fan in function of a signal received from the refrigerant liquid temperature
sensor. When the temperature of the refrigerant liquid reaches a level at which the
cooling effect of the natural flow of air is insufficient, the ECM activates the cooling
fan. When the temperature of the refrigerant liquid lowers itself sufficiently, the
ECM deactivates the cooling fan.
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