Engines Iveco C10,C13, Cursor 10, Cursor 13. Manual — part 76
Figure 8
112861
FEED SCHEME
1. Fuel filter - 2. Valve, to recirculate fuel from injectors, integrated in feed pump (start of opening at 3.5 bar) - 3. Feed pump -
4. Overpressure valve to return fuel to tank (start of opening at 0.2 bar) - 5. Pressure control valve (start of opening at 5 bar) -
6. Fuel pre-filter with priming pump - 7. Fitting - 8. Central unit - 9. Heat exchanger- 10. Pump injectors
A. Fuel arriving at injectors - B. Fuel returning to tank - C. Fuel entering from injectors into feed pump
Delivery circuit
Return circuit
FUEL FEED
Fuel feed is obtained by means of a pump, fuel filter and
pre-filter, 6 pump-injectors controlled by the camshaft by
means of rockers and by the electronic control unit.
(Demonstration)
9
CURSOR ENGINES G-DRIVE
SECTION 1 - GENERAL SPECIFICATIONS
Base - May 2007
F3A engine fuel supply pump
Figure 9
73547
104243
73548
Figure 10
Figure 11
A. Fuel inlet — B. Fuel delivery — C. By-pass nut —
D. Fuel return from the pump-injectors —
E. Pressure relief valve — Opening pressure: 5-8 bars.
CROSS-SECTION OF THE FUEL PUMP
1. Oil and fuel leakage indicator.
Injector-pump
1. Fuel/oil seal — 2. Fuel/diesel seal — 3. Fuel/exhaust gas seal.
The injector-pump is composed of: pumping element, nozzle,
solenoid valve.
Pumping element
The pumping element is operated by a rocker arm governed
directly by the cam of the camshaft.
The pumping element is able to ensure a high delivery
pressure. The return stroke is made by means of a return
spring.
Nozzle
Garages are authorized to perform fault diagnosis solely on
the entire injection system and may not work inside the
injector-pump, which must only be replaced.
A specific fault-diagnosis program, included in the control unit,
is able to check the operation of each injector (it deactivates
one at a time and checks the delivery of the other five).
Fault diagnosis makes it possible to distinguish errors of an
electrical origin from ones of a mechanical/hydraulic origin.
It indicates broken pump-injectors.
It is therefore necessary to interpret all the control unit error
messages correctly.
Any defects in the injectors are to be resolved by replacing
them.
Solenoid valve
The solenoid, which is energized at each active phase of the
cycle, via a signal from the control unit, controls a slide valve
that shuts off the pumping element delivery pipe.
When the solenoid is not energized, the valve is open, the fuel
is pumped but it flows back into the return pipe with the
normal transfer pressure of approximately 5 bars.
When the solenoid is energized, the valve shuts and the fuel,
not being able to flow back into the return pipe, is pumped
into the nozzle at high pressure, causing the needle to lift.
The amount of fuel injected depends on the length of time the
slide valve is closed and therefore on the time for which the
solenoid is energized.
The solenoid valve is joined to the injector body and cannot
be removed.
On the top there are two screws securing the electrical wiring
from the control unit.
To ensure signal transmission, tighten the screws with a torque
wrench to a torque of 1.36 — 1.92 Nm (0.136 — 0.192 kgm).
10
SECTION 1 - GENERAL SPECIFICATIONS
CURSOR ENGINES G-DRIVE
Base - May 2007
TURBOCHARGING
The turbocharging system consists of:
- air filter;
- Turbocharger.
Figure 12
(Demonstration)
107897
SUPERCHARGING SYSTEM DIAGRAM
Engine exhaust gas
Intake air
A = Inlet
S = Exhaust
11
CURSOR ENGINES G-DRIVE
SECTION 1 - GENERAL SPECIFICATIONS
Base - May 2007
Data, features and performances are valid only if the setter fully complies with all the installation prescriptions provided
by FPT.
Furthermore, the users assembled by the setter shall always be in conformance to couple, power and number of turns
based on which the engine has been designed.
NOTE
3
CURSOR ENGINES G-DRIVE
SECTION 2 - G-DRIVE APPLICATION
Base - May 2007
T
F3AE9685
Type
A*E001
B*E002
ρ
Compression ratio
16.5 to 1
Europe market
Max. output
kW
(HP)
rpm
-
-
-
300
(407.8)
1500/50 Hz
Max. torque
Nm
(kgm)
rpm
-
-
-
-
-
-
USA market
Max. output
kW
(HP)
rpm
335
(455.4)
1800/60 Hz
-
-
-
Max. torque
Nm
(kgm)
rpm
-
-
-
-
-
-
Bore x stroke
mm
Displacement
cm
3
125 x 140
10300
SUPERCHARGING
Turbocharger type
Intercooler
Direct injection
HOLSET HX455
bar
LUBRICATION
Oil pressure
(warm engine)
- idling
bar
- peak rpm
bar
Forced by gear pump, relief valve single action
oil filter
-
-
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