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MAN Energy Solutions

5S40ME-C9.6

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

Technical data from manufacturer or class sources · not yet verified by a person​​‍‌‌‍​‍‍⁠‌‌​‍​‍‍​⁠⁠
7,850 kWPower
5Cylinders
400 mmBore
1,600 mmStroke
146 rpmMCR RPM

The MAN 5S40ME-C9.6 is a 5‑cylinder, low‑speed 2‑stroke marine diesel engine delivering up to 7 850 kW at 146 rpm, distinguished by its hydraulic camshaft system and advanced electronic control for high efficiency and Tier III emissions compliance.

Inspection

Inspector Detail ✓ verified

Designation decoded

5 = Zylinderzahl, S = Super Long Stroke, 40 = Bohrung 400 mm, ME-C = MAN Electronically controlled Mark C, 9.6 = Mark 9.6 Steuerungsgeneration.

Background

Die S40ME-C ist die Super-Long-Stroke-Variante der 40er-Plattform. Kuerzerer Hub (1600 vs. 1860mm G40), hoehere Drehzahl. Fuer kleine Feeder-Container, Kuestenschiffe und General-Cargo. Kompakteste Bauweise in der ME-C-Reihe.

Calculated metrics

Stroke to bore ratio4

Inspector checklist

Kraftstoffsystem
  • Kraftstoffpumpen: Plunger-Zustand, Duesen-Oeffnungsdruck
  • Vorwaermung: Korrekte Viskositaet (12-15 cSt bei HFO)
  • Cat-Fines: Separator-Effizienz pruefen (<15 ppm)
Laufzeug und Tribologie
  • Laufbuchsen 400mm: Liner-Wear, Honmuster, BN-Abstimmung
  • Kolbenringe: Gap, Laufflaeche bei Scavenging-Inspektion
  • Kreuzkopf: S/B=4.0, moderate Seitenkraefte
  • Stopfbuchse: Drainage
ME-Steuerung
  • HPS 300 bar: Oelqualitaet
  • FIVA: Timing, Kalibrierung
  • CCU Mark 9.6
Turbolader
  • Lagerspiel, Vibration
  • Reinigung (Wasser-Wash)
  • Spuelluftdruck

Logbook reference values

ParameterExpectedDeviation means
Abgastemperatur320-420 Grad C>25 Grad C Spread: Injektor/Timing
Spuelluftdruck1.5-3.0 barNiedrig: TC-Fouling
Zylindeloelverbrauch0.7-1.2 g/kWhAnpassen an Schwefelgehalt
OMD<2.5% LELStopfbuchse pruefen

Common Failure Modes

  • Cat-Fine-Schaeden

    Symptoms: Beschleunigter Liner-Wear, metallischer Abrieb

    Causes: Separator, VLSFO-Qualitaet

    Preventive: Cat-Fines <15 ppm.

  • Cold Corrosion

    Symptoms: Hoher Liner-Wear, Cloverleafing

    Causes: BN falsch, Teillast

    Preventive: BN an Schwefelgehalt anpassen.

  • FIVA-Fehlfunktion

    Symptoms: Timing-Abweichung, Pmax-Spread

    Causes: Oelkontamination, Ventilsitz

    Preventive: HPS-Oel pruefen, FIVA alle 16000-24000 Bh.

Expert tips

  • S40 mit 5 Zylindern: Kleinster Motor in der ME-C-Reihe — Crew hat oft weniger Erfahrung mit ME-Elektronik. Trainingsstand pruefen.
  • Kompakter Motor ergibt einfacherer Zugang fuer Wartung — Scavenging-Inspektion regelmaessig nutzen.
  • Bei Slow Steaming auf kleinen Schiffen: Teillast-Probleme (Cold Corrosion, Turbolader-Surge) besonders beachten.

Related components

  • Turbolader
  • Spuelluftkuehler
  • Separatoren
  • Alpha Lubricator
  • HPS

Classification & regulatory

IMO Tier II. ECA-Compliance: VLSFO oder Scrubber.

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

Documentation

Manuals

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