Marine Installation Manual 2022-03 1-6
1 Engine Summary
1.2 Primary engine data
X62DF-S2.0
1.2.1 Engine rating field - rating points
The specific values for the four corners of the rating field are called rating points
(see Table 1-4).
Table 1-4 Rating points
Bore x stroke: 620 x 2,245 [mm]
No. of
cyl.
R1 R2 R3 R4
Power [kW]
5 10,550 8,775 8,000 6,675
6 12,660 10,530 9,600 8,010
7 14,770 12,285 11,200 9,345
8 16,880 14,040 12,800 10,680
Speed [rpm]
All cyl. 108 108 82 82
Brake Specific Gas Consumption (BSGC) [g/kWh] 100 % power, gas mode
All cyl. 138.8 133.9 140.9 135.9
Brake Specific Pilot fuel Consumption (BSPC) [g/kWh] 100% power, gas mode
All cyl. 1.0 1.2 1.0 1.2
Brake Specific Energy Consumption (BSEC) [kJ/kWh] 100 % power, gas mode
All cyl. 6,982 6,747 7,089 6,845
Brake Specific Fuel Consumption (BSFC) [g/kWh] 100% power, diesel mode
All cyl. 178.0 172.0 180.0 176.0
Mean Effective Pressure (MEP) [bar]
All cyl. 17.3 14.4 17.3 14.4
Lubricating oil consumption (for fully run-in engines under normal operating conditions)
System oil approx. 6 kg/cyl per day
Cylinder oil guide feed rate 0.6 g/kWh
BSGC data are quoted for gas of lower calorific value (LHV
LNG
) 50 MJ/kg
BSPC data are quoted for fuel of lower calorific value (LHV
MDO
) 42.7 MJ/kg
BSEC is calculated as BSGC x LHV
LNG
+ BSPC x LHV
MDO
BSFC data are quoted for fuel of lower calorific value 42.7 MJ/kg
All other reference conditions refer to ISO standard (ISO 3046-1)
For BSFC and BSEC the following tolerances are to be taken into account:
+5 % for 100-85 % engine power
+6 % for < 85-65% engine power
+7 % for < 65-50% engine power
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