Marine Installation Manual 2022-03 1-8
1 Engine Summary
1.3 Fuel operating modes
X62DF-S2.0
1.3 Fuel operating modes
The engine is designed for continuous service on gas fuel with fuel oil as a back-
up fuel. Depending on the selected option, different operating modes are avail-
able within specific engine power ranges (see Figure 1-3 and Figure 1-4,  1-9).
The fuel split ranges are shown in Table 1-6,  1-9.
The following list includes the operating modes of the X-DF2.0 engine:
• Gas mode (with the iCER system in operation)
• Combustion stability mode
• Diesel mode
• If contracted, fuel sharing mode
• If contracted, diesel Tier III mode
Changeover between the operating modes:
• Transfer (automatically active for changeover to, or between, modes with
gas operation)
• Gas trip (immediate action, always available while a mode with gas opera-
tion is selected)
Figure 1-3 Operating modes of the X-DF2.0 engine with iCER gas mode
NOTE
To have either or both the fuel sharing mode and the iCER diesel Tier III
mode available, these must be requested and included in the contract.
0 10 20 30 40 50 60 70 80 90 100 110
Power [%]
Diesel mode Overload
Fuel sharing mode (if contracted)
Gas mode
Transfer
STOP
DEAD SLOW
SLOW
HALF
FULL
SEA SPEED
Combustion stability mode
Gas only power range
With iCER in operation
Without iCER in operation
Without iCER in operation
Without iCER in operation
Without iCER in operation
Without iCER in operation
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