MEAUXAUXDEDE
Wärtsilä 14V31DF
Diesel
mode
Gas
mode
Diesel
mode
Gas
mode
Diesel
mode
Gas
mode
Diesel
mode
Gas
mode
Diesel
mode
Gas
mode
750750720750720rpmEngine speed
550550530550530kWCylinder output
VariableConstantConstantConstantConstantSpeed mode
-7059-7171-7121-7171-7121kJ/kWhFuel gas consumption at 85%
load
-7082-7294-7226-7294-7226kJ/kWhFuel gas consumption at 75%
load
-7157-7515-7484-7515-7484kJ/kWhFuel gas consumption at 50%
load
177.23.8177.23.8176.33.8177.23.8176.33.8g/kWhFuel oil consumption at 100%
load
172.54.2174.44.5173.14.4174.44.5173.14.4g/kWhFuel oil consumption at 85% load
176.34.1177.05.1176.85.0177.05.1176.85.0g/kWhFuel oil consumption at 75% load
180.44.3185.07.6184.37.6185.07.6184.37.6g/kWhFuel oil consumption 50% load
Fuel gas system
-895-895-895-895-895kPa (a)Gas pressure at engine inlet, min
(PT901)
-1015-1015-1015-1015-1015kPa (a)Gas pressure to Gas Valve Unit,
min
-0...60-0...60-0...60-0...60-0...60°CGas temperature before Gas Valve
Unit
Fuel oil system
1000±1001000±1001000±1001000±1001000±100kPaPressure before HP pumps (PT
101)
7.27.27.27.27.2m
3
/hEngine driven pump capacity
(MDF only)
16...24-16...24-16...24-16...24-16...24-cStHFO viscosity before the engine
140-140-140-140-140-°CMax. HFO temperature before
engine (TE 101)
2.02.02.02.02.0cStMDF viscosity, min.
4545454545°CMax. MDF temperature before
engine (TE 101)
1.11.11.11.11.1kg/hLeak fuel quantity (HFO), clean
fuel at 100% load
3.01.83.01.83.01.83.01.83.01.8kg/hLeak fuel quantity (MDF), clean
fuel at 100% load
Lubricating oil system
420420420420420kPaPressure before bearings, nom.
(PT 201)
4040404040kPaSuction ability, including pipe
loss, max.
150150150150150kPaPriming pressure, nom. (PT 201)
3535353535kPaSuction ability priming pump, in-
cluding pipe loss, max.
7070707070°CTemperature before bearings,
nom. (TE 201)
8282828282°CTemperature after engine, approx.
189170164170164m
3
/hPump capacity (main), engine
driven
160160160160160m
3
/hPump capacity (main), electrically
driven
70.0 / 70.070.0 / 70.070.0 / 70.070.0 / 70.070.0 / 70.0m
3
/hPriming pump capacity (50/60Hz)
3-28 DBAE248994
Wärtsilä 31DF Product Guide3. Technical Data