Iveco EUROCARGO, Instructions Manual

Page: 207 / 226

EUROCARGO Euro 6
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ELECTRONIC SUB-SYSTEMS
ELECTRONIC SUB-SYSTEMS
5.7 ELECTRICAL SYSTEM: CURRENT INTERVENTIONS AND DRAWS
47
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Printed 603.95.747
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1st Ed. - Base 12/2013
Drawing current
The current draw is related to the battery capacity.
If the engine is stopped the current draw from the battery reduces the capacity to restart the engine.
If the battery is charged less than 50% the engine start may be seriously compromised.
For the correct operation of the vehicle it is important to ensure that:
●
with engine stopped, the supply is limited to 10% of the nominal battery capacity;
●
with the engine running, the supply of another 20% of the nominal battery capacity is possible.
In the following the detail:
Maximum allowed supply at engine stopped
battery capacity [Ah]
supply for 1 continuous
hour [A]
supply for 2 continuous
hours [A]
supply for 5 continuous
hours [A]
supply for 10
continuous hours [A]
110 9.9 5.0 2.0 1.0
143 12.9 6.4 2.6 1.3
170 15.3 7.7 3.1 1.5
Battery level status
It is approximately derivable by the following table, where there is a direct link "open circuit voltage of the battery
← →
level”:
battery voltage [V] charge level
<12.2 <50%
12.3 50%
12.4 65%
12.5 75%
> 12.6 >90%
Note To check the level it is necessary to accurately measure the voltage with the battery terminals disconnected and possibly at least
one hour after turning off the engine.
The loss of capacity due to a current draw when the motor is stopped must be recovered in the shortest possible time.
To this effect, it is considered that, in case of a vehicle with standard equipment, without additional electrical loads, with 70 A al-
ternator and 110 Ah battery, circulating with typical urban mission, the capacity is recovered as follows:
outgoing charge level [%] working hours [h] recovered capacity [%]
65
1 20
2 25
3 28
75
1 13
2 16
3 18
The table does not take into account the drawing of the auxiliaries additions to the electrical system which, by taking a current de-
pending on the user, removes current in order to charge the battery.