Engines Iveco C10,C13, Cursor 10, Cursor 13. Instruction - page 43

Figure 26

104278

Water flowing out of the thermostat

Water circulating in the engine

Water flowing into the pump

ILLUSTRATIVE DIAGRAM

COOLING

18

SECTION 1 - GENERAL SPECIFICATIONS

F3B CURSOR ENGINES

Base - May 2007

104239

Figure 27

Figure 28

Figure 29

Thermostat

The water pump comprises: rotor, shaft with bearing.
T-gasket and drive pulley.

Check that the pump body has no cracks or water
leakage; if it does, replace the entire water pump.

CROSS-SECTION OF THE WATER PUMP

View of thermostat operation

60747

Water circulating in the engine

TO THE

EXPANSION

TUB

FROM

THE ENGINE

TO THE
BY PASS

Water leaving the thermostat

60748

TO THE

RADIATOR

TO THE

EXPANSION

TUB

TO THE
BY PASS

FROM

THE ENGINE

Check the thermostat works properly; replace it if in doubt.

Temperature of start of travel 84

°C ±2°C.

Minimum travel 15 mm at 94

°C ±2°C.

TO THE

RADIATOR

Water pump

SECTION 1 - GENERAL SPECIFICATIONS

19

F3B CURSOR ENGINES

Figure 30

TURBOCHARGING

The turbocharging system consists of:

- air filter;

- turbocharger.

116769

TURBOCHARGER HX55

Exhaust gas

Inlet air

Compressed air (hot)

Intake compressed air

ILLUSTRATIVE DIAGRAM

20

SECTION 1 - GENERAL SPECIFICATIONS

F3B CURSOR ENGINES

Base - May 2007

EGR EXHAUST GAS RECIRCULATION SYSTEM (ONLY FOR F3BE0684J*E902)

The exhaust gases may be partially conveyed back into the cylinders to reduce the maximum combustion temperature responsi-
ble for producing nitrogen oxides (NOx).
The exhaust gas recirculation (EGR) system, by reducing the combustion temperature, thus represents an effective NOx emis-
sion controlling system.

INTERNAL EGR ACTING ON THE INTAKE VALVES

Through a modification to the design of the intake cams, the internal EGR system enables part of the exhaust gas to be conveyed
back into the engine’s cylinders.
This type of EGR, called internal EGR, has no electronically controlled elements, the system is always active.
Its configuration requires no additional elements such as control valves, pipes or heat exchangers, so the profile of the engine
remains unchanged.
In addition to the main lobe, the intake cam presents an additional lobe (3) with respect to the configuration without EGR.
During the exhaust stroke of the cylinder concerned, this lobe opens the intake valve slightly earlier (*). In this way, part of the
exhaust gas is trapped in the intake pipe and then, during the intake stroke of the cylinder, is returned to the load of the cylinder
for the power stroke.

Figure 31

104761

1. Exhaust cams - 2. Intake cams - 3. EGR lobe - S. Exhaust pipes - A. Intake pipes.

Y: Lift of valves in mm.

Y: Regulation of engine

shaft in degrees

SECTION 1 - GENERAL SPECIFICATIONS

21

F3B CURSOR ENGINES

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