WÄRTSILÄ VASA 6L32, Инструкция по эксплуатации

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01.3 Reference conditions
Reference conditions according to ISO 3046/I (1995):
Air pressure . . . . . . . . . . . . . . . . . . . . . . . . . . 100 kPa (1.0 bar)
Ambient temperature . . . . . . . . . . . . . . . . . . . . . . 298 K (25°C)
Relative air humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 %
Cooling water temperature of charge air cooler . 298 K (25°C)
In case the engine power can be utilized under more difficult
conditions than those mentioned above, it will be stated in the
sales documents. Otherwise, the engine manufacturer can give
advice about the correct output reduction. As a guideline addi-
tional reduction may be calculated as follows:
Reduction factor = (a + b + c) %
a
= 0.5 % for every °C the ambient temperature exceeds the stated
value in the sales documents.
b
= 1 % for every 100 m level difference above stated value in the
sales documents.
c
= 0.4 % for every °C the cooling water of the charge air cooler
exceeds the stated value in the sales documents.
01.4 General engine design
The engine is a turbocharged aftercooled 4-stroke diesel engine
with direct fuel injection.
The engine block is cast in one piece. The crankshaft is mounted
underslung the engine. The main bearing cap is supported by two
hydraulically tensioned main bearing screws and two horizontal
side screws.
The charge air receiver as well as the cooling water header are
cast into the engine block. The crankcase covers, made of light
metal, seal against the engine block by means of rubber sealing’s.
The lubricating oil sump is welded.
The cylinder liners are cooled only in the upper part. The
cooling effect is optimized to give the correct temperature of the
inner surface.
To eliminate the risk of bore polishing, the liner is provided with
an anti polishing ring.
The main bearings are fully interchangeable trimetal or bi-
metal half shell bearings which can be removed by removing the
main bearing cap.
The crankshaft is forged in one piece and is balanced by coun-
terweights as required.
The connecting rods are of a three-piece design, so called
“Marine type connecting rod”.
32-200634-01 Main Data, Operating Data and General Design 01
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