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Library› Engine Room› Main Engines (2-Stroke)› Main Engine 2-Stroke› MAN Energy Solutions 8S70ME-GA10
MAN Energy Solutions

8S70ME-GA10

Main Engine 2-Stroke · Main Engines (2-Stroke)

Technical data from manufacturer or class sources · not yet verified by a person
64,640 kWPower
8Cylinders
700 mmBore
2,800 mmStroke
91 rpmMCR RPM

The MAN 8S70ME-GA10 is an eight‑cylinder, low‑speed two‑stroke main engine delivering up to 64.6 MW at 91 rpm, designed for ultra‑large vessels and featuring dual‑fuel capability (HFO/VLSFO/MDO plus ethane/LNG).

Inspection

Inspector Detail ✓ verified

Designation decoded

8 steht für 8 Zylinder, S für Super-Long-Stroke, 70 für 700 mm Bohrung, ME-GA für Ethan-fähige Gaseinspritzung, 10 für Mark 10.

Background

Die S70ME-GA10 mit 8 Zylindern ist ein leistungsstarker Dual-Fuel-Motor für große VLEC/VLGC. S/B 4.0 bei 700 mm. 8 Zylinder für bestes Schwingungsverhalten und hohe Leistung.

Calculated metrics

Stroke to bore ratio4

Inspector checklist

Laufzeug & Tribologie
  • Zylinderlaufbuchsen: S/B 4.0 bei 700 mm — Seitenkräfte, Gas-Kaltverschleiß
  • Kolbenringe: Gas-Schmierungsbedingungen
  • Zylinderschmierung: BN-Anpassung, Quill-Durchfluss bei 700 mm
Gaseinspritz-System
  • Gas-Einspritzventile: Dichtheit an allen 8 Zylindern
  • FGSS
  • Gas-Detektoren
Elektronische Steuerung
  • ME-Steuerung
  • Gas/Diesel-Umschaltung
  • Sicherheitslogik
Spülluft & Abgassystem
  • Spülluftkasten: Bei 700 mm zugänglich — alle 8 Ports
  • Turbolader: 2 TC
  • Abgastemperatur über 8 Zylinder

Logbook reference values

ParameterExpectedDeviation means
Abgastemperatur nach Zylinder320–380 °C (Gas); 350–420 °C (Diesel)Spread >15 °C → Gas/Pilot prüfen
Gas-Einspritzdruck250–300 barAbweichung → Kompressor/Ventil
Pmax±2 barAbweichung → Steuerung

Common Failure Modes

  • Gas-Einspritzventil-Leckage

    Symptoms: Gas-Alarm

    Causes: Verschleiß, Ethan-Exposition

    Preventive: Ventile inspizieren

  • Kaltverschleiß

    Symptoms: Erhöhte Wear-Rate

    Causes: Niedrige Temperatur, BN

    Preventive: BN25, Kühlwasser >65 °C

Expert tips

  • 8×S70ME-GA10: Quill-Kontrolle bei 700 mm im Gasbetrieb besonders wichtig — Gas-spezifische Feed-Rate einstellen
  • 2 Turbolader bei 8 Zylindern — bei Gas weniger Fouling, aber bei Diesel-Fallback TC-Reinigung sofort wieder aufnehmen
  • 8 Zylinder: Stabiles Schwingungsverhalten, Gas/Diesel-Umschaltung problemlos

Related components

  • FGSS
  • Gas-Einspritzventile
  • Gas-Detektoren
  • Turbolader (2 TC)
  • Pilot-Fuel-System

Classification & regulatory

IMO Tier II/III. IGC Code. SOLAS. MARPOL — nahezu SOx-frei.

Reference content for inspector orientation. Always verify against manufacturer's manual, latest service letters and class society requirements.

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