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WinGD
7X92DF-A
The WinGD 7X92DF-A is a high‑power, low‑speed two‑stroke marine main engine capable of running on conventional heavy fuel oil as well as low‑pressure methanol (with diesel pilot ignition), delivering up to 44.7 MW at 80 rpm.
44730.0 kW
Power
Engine Specifications
7
Cylinders
920 mm
Bore
3468 mm
Stroke
44,730 kW
MCR Power
80.0 rpm
MCR RPM
2-stroke
Stroke Type
Family: WIN-GD X-DF 2.0 (Methanol)
· Tier: IMO Tier III (gas mode)
· Fuel: HFO, VLSFO, MDO, Methanol
Other Cylinder Configurations 30
5X52DF-M
5 cyl
· 9,400 kW
5X62DF-M
5 cyl
· 13,400 kW
5X72DF-A
5 cyl
· 18,300 kW
5X72DF-M
5 cyl
· 18,300 kW
5X82DF-M
5 cyl
· 23,050 kW
5X92DF-A
5 cyl
· 31,950 kW
5X92DF-M
5 cyl
· 31,950 kW
6X52DF-M
6 cyl
· 11,280 kW
6X62DF-M
6 cyl
· 16,080 kW
6X72DF-A
6 cyl
· 21,960 kW
6X72DF-M
6 cyl
· 21,960 kW
6X82DF-M
6 cyl
· 27,660 kW
6X92DF-A
6 cyl
· 38,340 kW
6X92DF-M
6 cyl
· 38,340 kW
7X52DF-M
7 cyl
· 13,160 kW
7X62DF-M
7 cyl
· 18,760 kW
7X72DF-A
7 cyl
· 25,620 kW
7X72DF-M
7 cyl
· 25,620 kW
7X82DF-M
7 cyl
· 32,270 kW
7X92DF-M
7 cyl
· 44,730 kW
8X52DF-M
8 cyl
· 15,040 kW
8X62DF-M
8 cyl
· 21,440 kW
8X72DF-A
8 cyl
· 29,280 kW
8X72DF-M
8 cyl
· 29,280 kW
8X82DF-M
8 cyl
· 36,880 kW
8X92DF-A
8 cyl
· 51,120 kW
8X92DF-M
8 cyl
· 51,120 kW
9X82DF-M
9 cyl
· 41,490 kW
9X92DF-A
9 cyl
· 57,510 kW
9X92DF-M
9 cyl
· 57,510 kW
Components & Design
Component data being added…
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/Zylinder (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)
Kühlwasserleckagen in Zylindern und Abgasventilversteller-Mängel; Inspektionsroutine für Hochdruck-SCR-System erforderlich
Lager und Kolbenkühlung-Öltemperatur-Überwachung kritisch; Kondensatfluss an Wassertrenner zu hoch (Scavenging-Abkühlsystem-Fouling)
Thermobelastungsrisse im Zylinderkopf (Ventilbrücke): Zyklische thermische Belastung bei Lastwechseln 70-80 RPM; Abgasventil-Sitzflächen-Verschleiß erfordert Sc
Turbolader-Ölaustritt und Lecks; Scavenge-Luftkühler-Verschmutzung (Luftseite: Druckabfall, Temperaturanstieg; Wasserseitenverockerung)
Type-general inspection and maintenance points for this equipment category — not model-specific.
Suppliers & Spare Parts
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Equipment Model #38841
· ✓ still in production