Fig 7-6
Main dimensions of the lubricating oil cooler
Dimensions [mm]
Weight, dry
[kg]
Engine
D
C
B
A
L
W
H
300
330
1057
380
1217
690
1675
840
W 6L46F
300
330
1057
380
1467
690
1675
890
W 7L46F
300
330
1057
380
1467
690
1675
950
W 8L46F
300
330
1057
380
1717
690
1675
1010
W 9L46F
300
330
1057
380
1717
690
1675
1070
W 12V46F
300
330
1057
380
1967
690
1675
1190
W 14V46F
300
330
1057
380
1967
690
1675
1240
W 16V46F
NOTE
These dimensions are for guidance only.
7.3.9
Temperature control valve (2V01)
The temperature control valve maintains desired oil temperature at the engine inlet, by directing
part of the oil flow through the bypass line instead of through the cooler.
When using a temperature control valve with wax elements, the set-point of the valve must
be such that 63°C at the engine inlet is not exceeded. This means that the set-point should
be e.g. 57°C, in which case the valve starts to open at 54°C and at 63°C it is fully open. If
selecting a temperature control valve with wax elements that has a set-point of 63°C, the valve
may not be fully open until the oil temperature is e.g. 68°C, which is too high for the engine
at full load.
A viscosity of 50 cSt at 60°C can be used for evaluation of the pressure drop (SAE 40, VI 95).
Design data:
63°C
Temperature before engine, nom
1.0 MPa (10 bar)
Design pressure
50 kPa (0.5 bar)
Pressure drop, max
Wärtsilä 46F Product Guide - a19 - 1 December 2017
7-13
7. Lubricating Oil System
Wärtsilä 46F Product Guide
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