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WinGD

7X92DF

Name: WinGD 7X92DF
Brand: WinGD
SKU: OSE-38807

The WinGD 7X92DF is a low‑speed, 2‑stroke, 7‑cylinder main engine delivering up to 44.7 MW at 80 rpm, capable of running on HFO/Diesel or low‑pressure LNG (dual‑fuel) and designed for IMO Tier III emissions in gas mode.

44730.0 kW

Power

1,600,000 kg

Weight

Engine Specifications

Cylinders

920 mm

Bore

3468 mm

Stroke

44,730 kW

MCR Power

80.0 rpm

MCR RPM

20.0 bar

MEP

156.0 g/kWh

SFC

2-stroke

Stroke Type

Family: WIN-GD X-DF · Tier: IMO Tier III (gas mode) · Fuel: HFO, VLSFO, MDO, LNG

Other Cylinder Configurations 33

Components & Design

Alpha Lubricator Control WIN-GD / Hans Jensen Lubricators

WIN-GD Pulse Lubrication System

Pulse lubrication for accurate CLO timing. Feed rate adjustable 0.5-1.0 g/kWh. Lower feed on gas mode.

Lead time: 6 wk

20.0 kg

Common Rail Unit (RT-flex / X-DF) WIN-GD / Winterthur

WIN-GD Common Rail Unit

Rail pressure ~1000 bar (fuel), ~200 bar (servo oil). Monitor rail pressure stability.

Lead time: 16 wk

1800.0 kg

Crankcase Oil Mist Detector GEA / Schaller Automation

GEA Westfalia OMD / Schaller VN215+

Same as diesel — SOLAS mandatory regardless of fuel. Test weekly.

Lead time: 2 wk

8.0 kg

Cylinder Liner WIN-GD

WIN-GD X-DF Cylinder Liner

Gas ports machined into liner — inspect for erosion. Wear rate significantly lower in gas mode.

Lead time: 16 wk

3200.0 kg

Dual-Fuel System (Gas Mode) WIN-GD

WIN-GD X-DF Gas Admission System

Gas admission at 10-16 bar via scavenge ports. Pre-chamber with diesel pilot. Monitor methane slip.

Lead time: 12 wk

350.0 kg

Engine Control Unit (ECU / ECS) WIN-GD / ABB

WIN-GD WiDE Engine Control System

WiDE = Wartsila Intelligent Diesel Engine. Dual-redundant. iCER optimization requires latest firmware.

Lead time: 8 wk

50.0 kg

Exhaust Valve (& Valve Seat) WIN-GD

WIN-GD Exhaust Valve (X-DF)

Gas mode extends valve life significantly (less hot corrosion). Overhaul at 16,000 hrs (gas-only: 24,000 hrs).

Lead time: 10 wk

300.0 kg

FGSS (Fuel Gas Supply System - LNG/Methanol) TGE Marine / Wartsila Gas Solutions

FGSS LNG Supply Module (ME-GI type HP / X-DF type LP)

LP-FGSS for X-DF (6-16 bar). Mandatory gas detection in duct space. Emergency shutdown drill monthly.

Lead time: 26 wk

Fuel Valve (Injector) WIN-GD

WIN-GD X-DF Fuel Valve (diesel + pilot)

Pilot injector critical for gas mode ignition. Inspect pilot nozzle at 4,000 hrs. Main valve at 8,000 hrs.

Lead time: 6 wk

75.0 kg

Governor (Electronic/Woodward) Woodward

Woodward 723PLUS / WIN-GD Integrated Governor

Integrated with WiDE. Gas/diesel mode switching requires governor parameter set change.

Lead time: 4 wk

15.0 kg

Hydraulic Power Supply (HPS) WIN-GD

WIN-GD Flex HPS (Common Rail Servo Oil)

Servo oil system at ~200 bar. Filter changes every 4,000 hrs. Use approved servo oil only.

Lead time: 14 wk

2500.0 kg

Piston Crown WIN-GD

WIN-GD X-DF Piston Crown

Gas mode reduces thermal loading. Inspect at 16,000-24,000 hrs. Extended intervals possible in gas-only service.

Lead time: 14 wk

1700.0 kg

SCR (Selective Catalytic Reduction) HUG Engineering / Yara Marine

WIN-GD SCR Reactor (for diesel mode Tier III)

Only needed for Tier III in diesel mode (gas mode is inherently Tier III). SCR bypass in gas mode.

Lead time: 20 wk

12000.0 kg

Scavenge Air Cooler WIN-GD / Alfa Laval

WIN-GD SAC (Plate/Shell-and-tube)

Cleaner in gas mode — extended cleaning intervals. Monitor charge air temperature after cooler.

Lead time: 14 wk

5000.0 kg

Sensors & Transmitters WIN-GD / Danfoss / ABB

WIN-GD Sensor Suite (pressure, temp, speed, knock)

Knock detection sensors critical for X-DF gas mode — prevents detonation. Calibrate every 4,000 hrs.

Lead time: 2 wk

2.0 kg

Turbocharger Unit (ABB/MHI/Napier) ABB Turbocharging

ABB A265-L Turbocharger

Gas mode significantly reduces fouling. Extended TC overhaul interval to 16,000-24,000 hrs in gas mode.

Lead time: 16 wk

8500.0 kg

Technical Data

Bohrung 920 mm

Hub 3468 mm

Hub/Bohrung-Verhältnis 3.77

MEP R1 (X92-B) 21.0 bar

MEP R1 (X92DF-2.0 Gasmode) 17.3 bar

BSFC R1 (X92-B Standard) 167 g/kWh

BSFC R2 (X92-B Standard) 160 g/kWh

Spezifische Leistung 6450 kW/cylinder (R1)

Typ Viertakt-Langsamläufer, gemeinsame Schiene (Common Rail)

Zündfolge 1-7-4-10-2-8-5-11-3-9-6-12

Thermischer Wirkungsgrad 51-53% (X92DF im Lastbereich 60-90%)

Emissions-Kompliance IMO Tier II (Standard), IMO Tier III (mit SCR)

unified from engine model True

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Common failures & inspection points

WECS-9520 Steuerungssystem-Ausfälle (dokumentierte Mängel in Servoöl-Lecks, Kraftstoff-Lecks, Drossel-Einspritzventile)

Cooling water leakage in cylinders and exhaust valve actuator deficiencies; inspection routine for high-pressure SCR system required

Bearing and piston cooling oil temperature monitoring critical; condensate flow at water separator too high (scavenging cooling system fouling)

Thermal stress cracks in cylinder head (valve bridge): cyclic thermal load at load changes 70-80 RPM; exhaust valve seating surface wear requires sc

Turbocharger oil leakage and leaks; scavenge air cooler fouling (air side: pressure drop, temperature rise; water side scaling)

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

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Equipment Model #38807 · ✓ still in production