RT-flex82C
The WinGD RT-flex82C is a low‑speed, two‑stroke marine diesel engine delivering up to 54 MW, known for its large 820 mm bore and flexible fuel capability.
Engine Specifications
Inspector Detail
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Designation decoded
RT-flex steht für Sulzer/Wärtsilä Common-Rail-Baureihe, 82 für 820 mm Bohrung, C für die C-Version (höhere Leistungsdichte).
Background
Der RT-flex82C ist ein großer 2-Takt-Motor mit 820 mm Bohrung für VLCCs und große Containerschiffe. C-Version = höherer MEP. Vorgänger des WinGD X82-B. Viele RT-flex82C sind noch auf VLCCs der 2005–2015-Generation in Betrieb.
Calculated metrics
Inspector checklist
- Zylinderlaufbuchsen: 820 mm Bohrung — große Buchse mit Langzeit-Verschleißhistorie.
- Kolbenringe: Ältere Generation. Verfügbarkeit.
- Kreuzkopf-Lager: Große Kolbenmasse. Langzeit-Ermüdung.
- Kolbenkrone: NDT zwingend bei Altmotoren.
- Common-Rail: Langzeit-Verschleiß. HP-Pumpen und Injektoren.
- WECS: Ersatzteil-Support.
- Motorfundament: Schwerer Motor. Langzeit-Chocking und Bolzen.
- Alignment: Deflection historisch vergleichen.
Logbook reference values
| Parameter | Expected | Deviation means |
|---|---|---|
| Abgastemperatur nach Zylinder | 335–390 °C bei 75% MCR | Spread >20 °C → Injektor/Kompression |
| Pmax | 148–178 bar | Einzelzylinder >7 bar ab → Diagnose |
| Kreuzkopf-Lager-Temperatur | 55–70 °C | >75 °C → Inspektion |
Common Failure Modes
Expert tips
- 💡 RT-flex82C auf 15+ Jahre alten VLCCs: Ganzheitliche Betrachtung — Motor, Schiffsstruktur, Rohrleitungen und Hilfssysteme altern gemeinsam.
- 💡 VLSFO-Kompatibilität bei Altmotoren systematisch evaluieren.
Related components
Classification & regulatory
IMO Tier I/II. EEXI. MARPOL Annex I bei VLCC.
Reference content for inspector orientation. Always verify against manufacturer's manual, latest service letters and class society requirements.
Components & Design
Component data being added…
Technical Data
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Common failures & inspection points
Monitor piston ring top land deposits, check piston ring coating condition for peeling, measure chrome coating integrity via borescope
Check blower motor insulation resistance quarterly, verify auxiliary blower is NOT used at sea speeds, monitor scavenge pressure trend, inspect fuel tank documentation for bunker quality
Monitor fuel leakage tank level daily, inspect high-pressure pipe metallic hose encasing for rupture/pinhole leaks, test ICU solenoid valve operation, verify fuel injection timing accuracy
Monitor fuel viscosity (ISO 3104 at 40°C) before each bunker, verify fuel meets specification (3.5-5.5 cSt typical), monitor fuel injection timing electronically
Schedule exhaust valve inspection every 3 years (overhaul interval), photograph valve seat seat via borescope for erosion patterns, monitor exhaust temperature distribution across cylinders
Type-general inspection and maintenance points for this equipment category — not model-specific.
Service & Maintenance
Condition-based cylinder maintenance using scavenge inspection and drain-oil trend. Common rail and control oil system checks per PMS.
Suppliers & Spare Parts
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