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Library› Engine Room› Main Engines (2-Stroke)› Main Engine 2-Stroke› MAN Energy Solutions 6G80ME-C9.6
MAN Energy Solutions

6G80ME-C9.6

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

Technical data from manufacturer or class sources · not yet verified by a person
53,400 kWPower
6Cylinders
800 mmBore
3,450 mmStroke
78 rpmMCR RPM

The MAN 6G80ME-C9.6 is a high‑power, low‑speed 2‑stroke diesel main engine featuring hydraulic cylinder units and advanced electronic control for optimized fuel efficiency and Tier III emissions compliance.

Inspection

Inspector Detail

Designation decoded

6 = Zylinderzahl, G = Green Ultra Long Stroke, 80 = Bohrung 800 mm, ME-C = MAN Electronically controlled Mark C, 9.6 = Mark 9.6 Steuerungsgeneration.

Background

Die 6G80ME-C9.6 ist die aktuelle Version der grossen G80-Plattform mit 3450mm Hub (S/B=4.31). Fuer VLCCs und die groessten Containerschiffe mit konventionellem Kraftstoff. 6 Zylinder Standard-Konfiguration.

Calculated metrics

Stroke to bore ratio4.31

Inspector checklist

Kraftstoffsystem
  • Spray-Pattern 800mm
  • Cat-Fines: <15 ppm
  • VLSFO
Laufzeug und Tribologie
  • Laufbuchsen 800mm: Wear, BN, Kolbenring-Management
  • Kolbenringe: Thermische Verformung 800mm
  • Kreuzkopf: S/B=4.31, 3450mm Hub, LI
  • Stopfbuchse: Langer Hub
Strukturelle Integritaet
  • Ankerschrauben
  • Deflection
  • Fundament
ME-Steuerung
  • HPS: Hohe Volumenstroeme
  • FIVA Mark 9.6
  • CCU

Logbook reference values

ParameterExpectedDeviation means
Abgastemperatur320-420 Grad C>25 Grad C Spread
Spuelluftdruck2.5-3.8 barTC
Zylindeloelverbrauch0.7-1.2 g/kWhBN
OMD<2.5% LELStopfbuchse
DeflectionMAN-ToleranzFluchtung

Common Failure Modes

  • Cat-Fine-Schaeden

    Symptoms: Wear 800mm

    Causes: Separator

    Preventive: <15 ppm.

  • Kreuzkopf-Lagerschaden

    Symptoms: Klopfen, LI

    Causes: 3450mm Hub

    Preventive: LI alle 8000 Bh.

  • Cold Corrosion

    Symptoms: Wear

    Causes: BN

    Preventive: BN anpassen.

Expert tips

  • G80 mit 6 Zylindern: Standard fuer grosse Schiffe mit konventionellem Antrieb.
  • 3450mm Hub: Kreuzkopf und Struktur sind die Haupt-Inspektionspunkte.
  • Mark 9.6: Neueste Steuerung, verbesserte Effizienz und Slow-Steaming.

Related components

  • Turbolader (grosse Einheit)
  • Spuelluftkuehler
  • Separatoren
  • Alpha Lubricator (6)
  • HPS
  • Motorblock-Struktur

Classification & regulatory

IMO Tier II. ECA: VLSFO/Scrubber. EEDI Phase 3.

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

Documentation

Manuals

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