Iveco Marine Diesel Engines, Installation Handbook

Page: 53 / 132

MARCH 2004 ENGINE INSTALLATION
4.53
MARINE ENGINES INSTALLATION
4.1 TRANSPORTATION
The transportation of the engine or the whole engine/inverter unit shall be carried out with the suit-
able lifting systems by means of grommets (eyebolts) made for this purpose and in a safe way to pre-
vent any injuries to the operator and irregular stresses on the unit components.
The engine room must be set taking into consideration the operating needs and so that to facilitate
maintenance and checks.
In addition, it is necessary to ensure the removal of the engine/inverter, of the drive and their parts.
4.2 INSTALLATION ON THE HULL
The installation of the engine-inverter unit on the hull shall be carried out according to the following
prescriptions:
■
Distribute the weight of the unit evenly on the boat structures.
■
The basement shall support the reaction torque and the thrust supplied by the propeller.
■
The basement shall resist the bumps and the stresses coming from the propeller and the hull
during sailing.
■
Ensure that the engine is not influenced by the hull settling and the resulting effects on the unit-axis
line alignment. The cross and longitudinal rigidity of the basement must be such to prevent the
engine unit from having a structural function.
■
Foresee basement supports in a position corresponding to those of the engine and such to enable
the use of the fastening bolts.
■
The support must be such to enable the correct hanging of the unit thus preventing the unit from
having a structural function, except for the engines adopted for this solution.
■
The basement support height must be compatible with the space occupied by the underlying unit
parts and match with the tilted alignment of the engine axis line.This tilt must be compatible with
the maximum value admitted for the engine to be installed shown in the specific documentation
provided with each engine.
4.3 SUSPENSION
On marine installations two types of suspensions are usually adopted:
■
Rigid suspension
■
Flexible suspension
The engine suspension can be:
■
Placed on six points, two of them used for the inverter. Adopted on heavier and bigger engines and
always when the drive element weight does not enable the overhanging assembly. Max support
coplanarity is required in case of rigid assembly.
■
Placed on four points. Frequent solution for average sized engines and with the drive elements
flanged on the engine itself. This solution is adopted when the drive is placed far from the engine,
thus it shall have its own supports.