1.2 Reference conditions
The output is available within a range of ambient conditions and coolant temperatures specified
in the chapter Technical Data. The required fuel quality for maximum output is specified in the
section Fuel characteristics. For ambient conditions or fuel qualities outside the specification,
the output may have to be reduced.
The specific fuel consumption is stated in the chapter Technical Data. The statement applies
to engines operating in ambient conditions according to ISO 15550:2002 (E).
100 kPatotal barometric pressure
25 °Cair temperature
30 %relative humidity
25 °Ccharge air coolant temperature
Correction factors for the fuel oil consumption in other ambient conditions are given in standard
ISO 15550:2002 (E).
1.3 Operation in inc lined position (only for Marine Solutions
engines)
The engine is designed to ensure proper engine operation at inclination positions. Inclination
angle according to IACS requirement M46.2 (1982) (Rev.1 June 2002) - Main and auxiliary
machinery.
Max. inclination angles at which the engine will operate satisfactorily:
Table 1-2 Inclination with Normal Oil Sump
15°
●
Permanent athwart ship inclinations (list)
22.5°
●
Temporary athwart ship inclinations (roll)
10°
●
Permanent fore and aft inclinations (trim)
10°
●
Temporary fore and aft inclinations (pitch)
1-2 DBAE248994
Wärtsilä 31DF Product Guide1. Main Data and Outputs
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