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MAN Energy Solutions

7S40ME-C9.6

Name: MAN Energy Solutions 7S40ME-C9.6
Brand: MAN Energy Solutions
SKU: OSE-38483

The MAN Energy Solutions 7S40ME-C9.6 is a low‑speed, 2‑stroke marine diesel main engine delivering up to 10 990 kW at 146 rpm, featuring hydraulic camshaft replacement and advanced electronic control for high efficiency and Tier III emissions compliance.

10990.0 kW

Power

Engine Specifications

Cylinders

400 mm

Bore

1600 mm

Stroke

10,990 kW

MCR Power

146.0 rpm

MCR RPM

2-stroke

Stroke Type

Family: MAN Energy Solutions ME/ME-C · Tier: Tier III · Fuel: HFO, VLSFO, MDO

Inspector Detail

▸

Designation decoded

7 = Zylinderzahl, S = Super-Long-Stroke, 40 = Bohrung 400 mm, ME = elektronisch gesteuert, C = Compact, 9.6 = Engine Mark.

Background

Die 7S40ME-C mit 1600 mm Hub (Ratio 4.0) und 7 Zylindern ist die Super-Long-Stroke-Variante der 40er-Klasse. Höchste Drehzahl bei kleinster Bore. 7 Zylinder für excellenten Massenausgleich.

Calculated metrics

Stroke To Bore Ratio

4.0

Inspector checklist

Brennstoffsystem

Injektoren: Cat-Fines, 7 Stück
Fuel-System
ME Timing

Laufzeug & Tribologie

Ratio 4.0: Moderate Seitenkräfte
Laufbuchsen: Verschleiß
Zylinderöl: BN

Steuerung & Hydraulik

7 HCUs: 200-300 bar
EICU
Hydrauliköl

Abgassystem

TC (1x)
Abgaskessel
Spülluft-Receiver

Dichtungen

7 Stopfbuchsen
Abgasventile
Spülluft-Klappen

Logbook reference values

Parameter	Expected	Deviation means
Abgastemperatur nach Zylinder	355-425 °C	>25 °C → Einspritzung
P-max	±5 bar	Timing
Spülluftdruck	1.8-2.8 bar	TC
Zylinderöl-Feed-Rate	0.8-1.2 g/kWh	Fuel-abhängig
Hydrauliköl-Druck	200-300 bar	HCU

Common Failure Modes

Cat-Fine-Schäden

Symptoms: Verschleiß

Causes: Cat-Fines

Preventive: Separator; Fuel-Analyse

Cold Corrosion

Symptoms: Liner-Verschleiß

Causes: BN niedrig

Preventive: BN anpassen

Zylinderbalance 7 Zyl

Symptoms: Temperatur-Spreizung

Causes: Ungleicher Verschleiß

Preventive: Performance-Monitoring

Expert tips

💡 7S40 mit Ratio 4.0: Kompakteste 7-Zylinder-Konfiguration. Exzellenter Massenausgleich bei höchster Drehzahl in der 40er-Klasse.
💡 7 Zylinder S40: Ideale Konfiguration für kleine Schiffe mit Anspruch an Laufruhe und geringem Platz.
💡 Bei kleinen Motoren mit 7 Zylindern: Fuel-Qualität wirkt sich auf alle 7 gleichzeitig aus.

Related components

Turbolader (1x) Separator Alpha Lubricator Fuel-System Ladeluftkühler

Classification & regulatory

IMO Tier II. Tier III in ECA. MARPOL Annex VI.

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

Other Cylinder Configurations 50

Components & Design

Alpha Lubricator Control MAN Energy Solutions

MAN Alpha Lubricator Mk III

Feed rate 0.6-1.2 g/kWh depending on fuel sulfur. Monitor via Alpha ACC (Adaptive Cylinder lubrication Control).

Lead time: 6 wk

25.0 kg

Crankcase Oil Mist Detector Schaller Automation

Schaller Visatron VN215+ OMD

SOLAS mandatory. Test weekly. Clean sensor optics every 4,000 hrs. Replace reference cell every 2 years.

Lead time: 2 wk

8.0 kg

Crosshead Bearing MAN Energy Solutions

MAN Crosshead Bearing (thin-shell, white metal)

Inspect at 16,000 hrs. Check bearing clearance. Monitor via bearing temperature and oil analysis.

Lead time: 12 wk

380.0 kg

Cylinder Liner MAN Energy Solutions

MAN ME-C Cylinder Liner (bore-cooled)

Wear monitoring via calibration. Max wear 0.8% of bore. Replace typically at 32,000-60,000 hrs.

Lead time: 16 wk

3500.0 kg

Engine Control Unit (ECU / ECS) MAN Energy Solutions

MAN ECS (Engine Control System)

Dual-redundant ECU. Software updates via MAN PrimeServ. Keep backup CCU on board.

Lead time: 8 wk

45.0 kg

Exhaust Valve (& Valve Seat) MAN Energy Solutions

MAN Exhaust Valve (Nimonic/Stellite)

Overhaul at 8,000-12,000 hrs. Stellite-faced seat. Grinding/lapping at overhaul. Check spindle guide clearance.

Lead time: 8 wk

320.0 kg

FIVA Valve (ME-type) MAN Energy Solutions

MAN FIVA Valve (ME-C)

FIVA = Fuel Injection Valve Actuator. Overhaul at 8,000 hrs. Critical for timing accuracy.

Lead time: 8 wk

35.0 kg

Fuel Booster Module (ME-type) MAN Energy Solutions

MAN Fuel Booster Module

Overhaul at 16,000 hrs. Pressure test fuel pipes. Check plunger wear with micrometer.

Lead time: 12 wk

450.0 kg

Fuel Valve (Injector) MAN Energy Solutions

MAN ME-C Fuel Valve Assembly

Overhaul every 4,000-8,000 hrs. Pressure test after overhaul. Nozzle replacement at 8,000 hrs.

Lead time: 4 wk

85.0 kg

Governor (Electronic/Woodward) Woodward

Woodward 723PLUS Digital Governor

Electronic governor integrated with ECS on ME engines. Firmware updates via Woodward service.

Lead time: 4 wk

15.0 kg

Hydraulic Cylinder Unit (HCU) MAN Energy Solutions

MAN HCU (ME-C type, per cylinder)

One HCU per cylinder. FIVA valve overhaul at 8,000 hrs. Booster overhaul at 16,000 hrs.

Lead time: 12 wk

1200.0 kg

Hydraulic Power Supply (HPS) MAN Energy Solutions

MAN HPS Unit (ME-C)

Servo oil SAE 30 / System oil. Filter change every 4000 hrs. Monitor servo oil pressure.

Lead time: 16 wk

2800.0 kg

Main Bearings MAN Energy Solutions

MAN Main Bearing Shells (white metal/tri-metal)

Inspect at 16,000 hrs. Jack up crankshaft for clearance measurement. Replace at signs of overlay fatigue.

Lead time: 8 wk

250.0 kg

PMI (Pressure Measurement Indicator) MAN Energy Solutions

MAN PMI Sensor System

Online cylinder pressure monitoring. Calibrate sensors annually. Essential for combustion optimization.

Lead time: 4 wk

5.0 kg

Piston Crown MAN Energy Solutions

MAN ME-C Piston Crown (bore-cooled Cr-Mo steel)

Inspect at 16,000 hrs. Pull piston at 16,000-24,000 hrs. Check cooling bores with borescope.

Lead time: 16 wk

1800.0 kg

Piston Ring Pack MAN Energy Solutions

MAN Piston Ring Set (CPR / AL rings)

CPR (Controlled Pressure Relief) top ring. Replace at 8,000-16,000 hrs depending on wear.

Lead time: 4 wk

60.0 kg

Scavenge Air Cooler MAN Energy Solutions

MAN Scavenge Air Cooler (plate-type)

Clean air side every 4,000-8,000 hrs (chemical/HP water). Monitor pressure drop and charge air temp.

Lead time: 16 wk

5500.0 kg

Turbocharger Unit (ABB/MHI/Napier) ABB Turbocharging

ABB A175-L Turbocharger

Overhaul at 12,000-16,000 hrs. Water washing every 24-100 hrs depending on load.

Lead time: 12 wk

4500.0 kg

Technical Data

unified from engine model True

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Manuals

operating
MAN B&W ME/ME-C/ME-B Engine Operation (OM-ME-C)
maintenance
MAN B&W ME/ME-C Maintenance Manual (MM-ME-C)
spare_parts
MAN B&W ME/ME-C Illustrated Parts Catalogue (IPC-ME-C)
service_letter
SL-ME Service Letters Collection (SL-ME)
technical_data
MAN CEAS Engine Calculation Tool (CEAS)

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Equipment Model #38483 · ✓ still in production