Main Engine 2-Stroke · Main Engines (2-Stroke)
The MAN 7S60ME-GA10 is a 7‑cylinder, low‑speed two‑stroke main engine delivering up to 39 550 kW at 105 rpm, notable for its Tier III compliance and dual‑fuel capability (ethane/LNG alongside conventional heavy fuel oil).
7 steht für 7 Zylinder, S für Super-Long-Stroke, 60 für 600 mm Bohrung, ME-GA für elektronisch gesteuerte Zweitaktmaschine mit Ethan-fähiger Gaseinspritzung, 10 für Mark 10.
Die S60ME-GA10 mit 7 Zylindern ist ein mittelgroßer Dual-Fuel-Motor für VLEC/VLGC. S/B 4.0 bei 600 mm Bohrung. 7 Zylinder für mittlere Leistungsanforderungen. Ethan-fähige Hochdruck-Gaseinspritzung mit voll-elektronischer Steuerung.
| Parameter | Expected | Deviation means |
|---|---|---|
| Abgastemperatur nach Zylinder | 320–380 °C (Gas); 350–420 °C (Diesel) | Spread >15 °C → Gas/Pilot-Einspritzung prüfen |
| Gas-Einspritzdruck | 250–300 bar | Abweichung → Kompressor/Ventil |
| Pmax | ±2 bar Zylindergleichgewicht | Abweichung → Steuerung |
| Pilot-Fuel-Anteil | 3–8% | Zu hoch → Gas-Einspritzung ineffizient |
Symptoms: Gas-Alarm, Druckabfall
Causes: Düsennadel-Verschleiß, Ethan-Exposition
Preventive: Ventile bei Kolbenziehung inspizieren
Symptoms: Erhöhte Liner-Wear-Rate
Causes: Niedrigere Temperatur bei Gas, BN zu hoch
Preventive: BN25-Öl, Kühlwasser >65 °C
Symptoms: Diesel-Fallback
Causes: Kompressor-Verschleiß
Preventive: FGSS nach Herstellervorgabe warten
IMO Tier II/III. IGC Code. SOLAS Gasanforderungen. MARPOL — nahezu SOx-frei bei Gas.
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