UK
302
MF13
The system controls the following parameters:
• Minimum functioning.
• Supply of air in the case of the engine missing.
• Correction of the air/fuel relation operating at minimum speeds at heights above
sea-level.
• 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 -
placed near the ECM, under the vehicle’s saddle and the glove
box. 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:
• Inserting the data in the ECM memory.
• Supplying data about the position of the stepper engine of the air control valve.
• Activating the cooling fans 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 fans -
positioned behind to the radiators. The ECM activates and deactivates
the cooling fans in function of a signal received from the refrigerant liquid temperatu-
re 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 cooling fans are activated
by the ECM. When the temperature of the refrigerant liquid lowers itself sufficiently,
the ECM deactivates the cooling fans.
Summary of Contents for TnT1130
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Page 192: ...UK 192 MF13 Remove the five screws 6 Remove screw 7 Remove the two screws 8 ...
Page 193: ...UK 193 MF13 Remove screw 9 Remove the two screws 10 Loosen and remove screw 11 ...
Page 199: ...UK 199 MF13 Remove the toothed wheel 2 Remove the roller cage 3 Remove the screws 4 ...
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Page 318: ...UK 318 MF13 E E E E Electrical P P P P Plant 9 ELECTRICAL PLANT ...
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Page 392: ...Produced and Printed SERIART Fabriano AN ITALY ...