Marine Installation Manual 2022-03 1-10
1 Engine Summary
1.3 Fuel operating modes
X62DF-S2.0
1.3.1 Operation in gas mode
The engine operates in gas mode according to the Otto cycle with a pre-mixed
lean air-gas mixture, which is ignited by a small amount of pilot fuel. The
amount of injected pilot fuel used is approximately the same across the entire en-
gine power range. This is equivalent to a range that lies between less than 1% and
2% of the total energy consumption within the full gas operating range (between
10% and 100% CMCR engine power). For the energy distribution during gas
mode see Figure 1-5.
Figure 1-5 Gas mode operation
NOTE
At any time, the gas operation can be stopped immediately by initiating
a gas trip.
Total fuel
[power %]
Gas
10050
0
0
50
100
Pilot fuel (enlarged for visibility reasons, not scaled)
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