Iveco C78 ENT M50, Installation Instruction

Page: 21 / 40

C78 ENT M50 INSTALLATION INSTRUCTIONS
5
FEBRUARY 2003 EDITION
DESIGN STANDARDS
Starting aid
When the engine is to be used at temperatures lower than
-15 °C, an electrical grid heater is installed. Its operation is
controlled by the electronic unit of the injection system.The
element will be placed between the turbocharger and the
air-water heater exchanger (after-cooler), replacing the ter-
minal part of the intake duct. Connection to the electrical
wiring provided is achieved interposing a specific relay and
connection to the power supply grid.
For use at temperatures lower than -25 °C, adoption of an
auxiliary preheating system is recommended.
1. Specific junction pipe
2. Electrical grid heater
3. Power relay
(1) The EDC electronic engine control is programmed to
reduce maximum power output whenever the operating
parameters measured by the sensors indicate that critical
conditions have been reached which, if exceeded, would
lead to the risk of damaging the engine.
Accessibility
The engine shall be located in such a way as to allow to refill
and drain engine fluids as required by servicing ope-rations
and to provide, even when underway, for easy access to
electrical fuses and to the diagnostics push-buttons within
the EMB.
Note that the lower part of the flywheel case has an inspec-
tion port, useful when phasing the engine references of the
injection systems, and a window flanked with threaded
holes, needed for fastening the “flywheel rotator” tool. If
raised limber boards are installed in the engine room, these
provisions may no longer be accessible to servicing person-
nel. In this case, the phasing operation can be carried out
using a procedure that is typical of the marine application
and described in the “OVERHAUL” section of the “Technical
and Repair Manual”; use of the tool to rotate the flywheel,
however, will be impossible.
Securing
Securing shall be accomplished by means of elastic blocks
able to support the engine’s mass and the longitudinal
thrust exerted by the propeller shaft when in motion.
Dimension and fastening information is provided in the
“Installation Diagram”.
Engine intake and ventilation Air
Compliance with prescriptions on the quantity of air neces-
sary for combustion and ventilation assures regular engine
operation even under adverse conditions and allows the
engine to reach its maximum design power output. (1)
Sea water pipeline
It shall be provided with an inlet suitable for preventing
extraneous bodies from entering the intake pipe. Between
the inlet and the pump it is advisable to place a gate, to be
closed in case of emergency or for extended stops, and a
filter to hold the smaller impurities; it is also advisable to
install a suitably sized, easily replaced zinc anode.
The engine sea water pipeline is fitted by the manufacturer
with protective anodes to be replaced periodically (see
“OVERVIEW” section).
The rubber hoses positioned along the pipeline shall be suf-
ficiently rigid to avoid creating choke points due to pinching.
(1)
Engine pre-heating
In case of usage requiring maximum power output immedi-
ately, installation of an auxiliary pre-heater on the closed
cooling loop is recommended.
Exhaust gas
The exhaust fume discharge pipeline shall be positioned in
compliance with the indications contained in the IVECO
Aifo Publication “Marine Engine Installation Manual”, which
also provides indications to design the exhaust pipeline.
Figure 2
1
2
3
➩
80829