Main Engine 2-Stroke · Main Engines (2-Stroke)
The MAN 8G70ME-GA10 is an eight‑cylinder, low‑speed two‑stroke main engine delivering up to 55 MW (≈54 960 kW) at 91 rpm, notable for its dual‑fuel capability (LNG/ethane plus conventional marine fuels) and Tier III emission compliance.
8 steht für 8 Zylinder, G für Green Ultra-Long-Stroke, 70 für 700 mm Bohrung, ME-GA für Ethan-fähige Gaseinspritzung, 10 für Mark 10.
Die G70ME-GA10 mit 8 Zylindern ist einer der leistungsstärksten und effizientesten ME-GA-Motoren. S/B 4.65 bei 700 mm und 3256 mm Hub. 8 Zylinder für maximale Leistung und bestes Schwingungsverhalten. Für die größten VLEC/VLGC.
| Parameter | Expected | Deviation means |
|---|---|---|
| Abgastemperatur nach Zylinder | 320–380 °C (Gas); 340–410 °C (Diesel) | Spread >15 °C → Gas/Pilot prüfen |
| Gas-Einspritzdruck | 250–300 bar | Abweichung → Kompressor/Ventil |
| Kreuzkopflager-Temperatur | 55–65 °C | Anstieg → sofort untersuchen |
| Pmax | ±2 bar | Abweichung → Steuerung |
Symptoms: Hohe Wear-Rate
Causes: Extrem hohe Seitenkräfte, Kein Aschefilm, BN zu hoch
Preventive: BN25, Alpha-Lubricator kalibrieren
Symptoms: Gas-Alarm
Causes: Verschleiß
Preventive: Ventile inspizieren
Symptoms: Steigende Drainage
Causes: S/B 4.65
Preventive: Drainage-Trend, 1000 Bh Intervall
IMO Tier II/III. IGC Code. SOLAS. MARPOL — maximale Emissionsreduktion.
Reference content for inspector orientation. Always verify against manufacturer's manual, latest service letters and class society requirements.
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