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