Example of required power, oil temperature 40°C.
16V46F14V46F12V46F9L46F8L46F7L46F6L46F
11.511.5108665Pump [kW]
151515117.57.57.5Electric motor [kW]
Example of required power, oil temperature 20°C.
16V46F14V46F12V46F9L46F8L46F7L46F6L46F
17.517.52317141411Pump [kW]
22223018.5151515Electric motor [kW]
7.3.7 Pressure control valve (2V03)
An external pressure control valve is required in installations with electrically driven lubricating
oil pump. The surplus flow from the pressure control valve should be conducted back to the
oil tank.
The control valve must have remote pressure sensing from connection 224 on the engine, if
the electrically driven pump is the main lubricating oil pump. An adjustable control valve with
direct pressure sensing is acceptable for stand-by pumps. (The control valve integrated in the
engine driven lubricating oil pump does not control the pressure from the stand-by pump).
Design data:
1.0 MPa (10 bar)Design pressure
Difference between pump capacity and oil flow through engineCapacity
100 °CDesign temperature
400 kPa (4 bar) at engine inletSet point
7.3.8 Lubricating oil cooler (2E01)
The external lubricating oil cooler can be of plate or tube type.
For calculation of the pressure drop a viscosity of 50 cSt at 60°C can be used (SAE 40, VI 95).
Design data:
see Technical data, "Oil flow through engine"Oil flow through cooler
see Technical dataHeat to be dissipated
80 kPa (0.8 bar)Max. pressure drop, oil
see Technical data, "LT-pump capacity"Water flow through cooler
60 kPa (0.6 bar)Max. pressure drop, water
45°CWater temperature before cooler
63°COil temperature before engine
1.0 MPa (10 bar)Design pressure
min. 15%Margin (heat rate, fouling)
7-12 Wärtsilä 46F Product Guide - a19 - 1 December 2017
Wärtsilä 46F Product Guide7. Lubricating Oil System
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