Main Engine 2-Stroke · Main Engines (2-Stroke)
The MAN 6G70ME-GA10 is a low‑speed, six‑cylinder, two‑stroke marine main engine delivering up to 41 MW (≈55,500 hp) at 91 rpm, notable for its dual‑fuel capability (HFO, VLSFO, MDO, ethane and LNG) and Tier III NOx compliance.
6 steht für 6 Zylinder, G für Green Ultra-Long-Stroke, 70 für 700 mm Bohrung, ME-GA für elektronisch gesteuerte Zweitaktmaschine mit Ethan-fähiger Gaseinspritzung, 10 für Mark 10.
Die G70ME-GA10 mit 6 Zylindern ist die Green-Ultra-Long-Stroke-Variante der 70er-Bohrungsklasse mit Ethan-fähiger Gaseinspritzung. S/B 4.65 für maximale Effizienz. Die Kombination aus G-Typ und Gasbetrieb optimiert den Propulsionswirkungsgrad und reduziert Emissionen maximal.
| 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 |
| Pmax | ±2 bar Zylindergleichgewicht | Abweichung → Steuerung |
| Kreuzkopflager-Temperatur | 55–65 °C | Anstieg → sofort untersuchen |
Symptoms: Hohe Wear-Rate
Causes: Extrem hohe Seitenkräfte, Kein HFO-Aschefilm, BN zu hoch
Preventive: BN25-Öl, Alpha-Lubricator kalibrieren
Symptoms: Gas-Alarm
Causes: Verschleiß, Ethan-Exposition
Preventive: Ventile inspizieren
Symptoms: Steigende Drainage trotz Gas-Betrieb
Causes: S/B 4.65 maximale Relativbewegung
Preventive: Drainage-Trend, Intervall 1000 Bh
IMO Tier II/III. IGC Code. SOLAS. MARPOL — maximale Emissionsreduktion durch G-Typ + Gas.
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