"> WinGD 11X72DF
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WinGD

11X72DF

The WinGD 11X72DF is an 11‑cylinder, low‑speed, two‑stroke crosshead main engine delivering up to 33 660 kW at 91 rpm, capable of running on LNG or HFO (dual‑fuel) and equipped with electronic common‑rail injection.

WinGD 11X72DF
33660.0 kW
Power

Engine Specifications

11
Cylinders
720 mm
Bore
3086 mm
Stroke
2-stroke
Stroke Type

Components & Design

Component data being added…

Technical Data

Stroke/Bore Ratio 4.29
MEP X72 Diesel R1 20.5 bar
MEP X72DF Standard R1 17.3 bar
MEP X72DF-1.2 R1 15.7 bar
BSFC X72 Diesel 167 g/kWh at full power (Tier II)
BSFC X72DF-A-1.0 Diesel 168.8 g/kWh at 89 rpm, 8 cyl
Gas Consumption X72DF-A-1.0 Ammonia 368.1 g/kWh at max rating
Power per Cylinder X72DF-2.1 3,225 kW/cyl at 89 rpm
Injection System Common Rail, electronic control
Engine Type Camshaftless 2-stroke, reversible, low-speed
power kw 33660
rpm 91
fuel type LNG/HFO (Dual-Fuel)
configuration L

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Common failures & inspection points

Fuel Rail Pressure Too High causing violent firing at start; fuel control failure

Verify fuel rail pressure within spec; check power supply and wiring to fuel control

Injection Nozzle Wear from normal operation causing irregular combustion

Inspect nozzle tips at ~8,000–10,000 operating hours; replace spare kit per schedule

Lubricating Oil Contamination: water and solids reduce bearing protection; dry sump circulation critical

Verify centrifugal separator bypass operation; monitor oil condition via sampling; check crankcase drain integrity

Ammonia Combustion Instability (X72DF-A-1.0): low flame speed, high activation energy, misfiring risk, N2O/NH3 emissions

Monitor cylinder pressure diagrams; verify pilot fuel injection timing/quantity; track exhaust temps and emission compliance

Scavenge Air Cooler Fouling in dust-laden trades; efficiency loss and thermal stress

Install filtration for dust-prone routes; schedule periodic cooler inspection and cleaning; monitor scavenge air temperature trend

Type-general inspection and maintenance points for this equipment category — not model-specific.

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Equipment Model #122867 · ✓ still in production