Engines Iveco C10,C13, Cursor 10, Cursor 13. Manual — part 20
Figure 23
Alternator
Supplier
MITSUBISHI
Technical features
24V - 90A
Figure 24
Figure 25
Figure 26
116714
116713
116716
116715
46
SECTION 3 - INDUSTRIAL APPLICATION
CURSOR ENGINES F3A
Base - May 2007
Description
S
+ 30
L
Battery recharge light
B-
Negative
B+
Positive
IG
+ 15
Figure 27
Starting motor
Specifications
Supplier
DENSO
Type
2280007550
Electrical system
24 Volt
Nominal output
5.5 Kw
104315
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CURSOR ENGINES F3A
Base - May 2007
Pre/post-heating resistance
The resistance is ~ 0,7 Ohm.
Such resistance is placed between the cylinder head and the suction manifold. It is used to heat up air during pre/post-heating
operations.
When the ignition key is inserted, should any one of the temperature sensors — water, air, gas oil — detect a value below 10
°C,
the electronic control unit will activate pre/post-heating and turn on the relevant dashboard warning light for a variable time
depending on the temperature.
After that time, the warning light starts blinking thus informing the driver that the engine can be started.
When the engine is running the warning light goes off, while the resistance is being fed for a certain time as a result of post-heating.
If the engine is not started, with the warning light flashing, in 20 / 25 seconds, the operation is cancelled to prevent draining the
battery.
On the contrary, if reference temperatures are over 10
°C, when the ignition key is inserted the warning light comes on for about
2 seconds and carries out the test and then goes out to signal that the engine can be started.
Figure 28
104270
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SECTION 3 - INDUSTRIAL APPLICATION
CURSOR ENGINES F3A
Base - May 2007
EDC SYSTEM FUNCTIONS
The EDC 7 UC31 electronic center manages the following main functions:
Fuel injection
Accessory functions such as cruise control, speed limiter, PTO and the like
Self-diagnosis
Recovery
It also enables:
Interfacing with other electronic systems (if any) available on the vehicle
Diagnosis
Fuel dosing
Fuel dosing is calculated based on:
-
accelerator position
-
engine rpm
-
quantity of air admitted.
The result can be corrected based on:
-
water temperature
or to prevent:
-
noise
-
fumes
-
overloads
-
overheating
Pressure can be adjusted in case of:
-
engine brake actuation
-
external device actuation (e.g. speed reducer, cruise control)
-
serious defects involving load reduction or engine stop.
After determining the mass of air introduced by measuring its volume and temperature, the center calculates the corresponding
mass of fuel to be injected into the cylinder involved, with account also taken of gas oil temperature.
Delivery correction based on water temperature
When cold, the engine encounters greater operating resistance, mechanical friction is high, oil is till very viscous and operating plays
are not optimized yet.
Fuel injected also tends to condense on cold metal surfaces.
Fuel dosing with a cold engine is therefore greater than when hot.
Delivery correction to prevent noise, fumes or overloads
Behaviors that could lead to the defects under review are well known, so the designer has added specific instructions to the center
to prevent them.
De-rating
In the event of engine overheating, decreasing delivery proportionally to the temperature reached by the coolant changes injection.
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CURSOR ENGINES F3A
Base - May 2007
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