Iveco Marine Diesel Engines, Installation Handbook

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MARCH 2004 CONTROLS
11.107
MARINE ENGINES INSTALLATION
11.1 OVERVIEW
A correct choice of manoeuvre and engine control systems is highly significant for both safety during
sailing and correct engine use to attain reliability and enhance performance.
11.2 FUNCTIONS
The commands generally required to run the engine are summarised as follows:
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Engine startup
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Accelerator lever drive
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Reverser selector lever drive
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Engine stop
Engine startup
Except for the compressed air system, the engine is set to rotate with an electric motor powered by a
storage battery. The engine is powered by a key or a push-button located on the board. IVECO plans
for its own engines fitted with an electronic injection system, the possibility of a remote control at the
engine room to be used during testing and maintenance procedures.
Accelerator lever drive
Most of them are remote controls since the manoeuvre room is far from the engine room. In some
vessels there are two available control rooms to choose, to attain the best manoeuvrability conditions:
main deck and upper deck (fly-bridge).
The drive must vary the lever position set in the injection pump or, in presence of the EDC system, it
must change the accelerator potentiometer lever. In case of engines fitted with engine electronic con-
trol system and under prior agreement with IVECO engineering departments, software controls with
CAN protocols on the specialised network can be used.
The most frequent case is the remote control made out of a flexible wire rope, which can slide through
a flexible and suitable sheath so that it can be pulled and pushed.
When installing the remote controls it is necessary to consider:
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The remote control stroke has to be adjusted so that the accelerator can fully complete its rota-
tion arch; so that when the lever on the board is at high speed position, the accelerator lever must
reach the high speed reference, and vice versa for low speed position. Otherwise, the engine per-
formance would decrease, or the low speed would be accelerated, with adverse consequences dur-
ing the vessel manoeuvrability.
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The wire rope slide within the sheath must be precise and must ensure that once released, the
accelerator lever return is complete.
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The sheath must be installed to avoid accidental contact with rotating parts or high temperatures.
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All connexions and regulating screw elements must be fastened with locking devices so that the
remote control does not decrease its performance through time.
As an alternative to wire rope remote controls, compressed air or electronic systems with proper actu-
ators can be used.
It is also worth mentioning for these cases the instructions concerning accelerator complete stroke and
drive reliability through time.