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MAN Energy Solutions
12V27/38E
The MAN 12V27/38E is a V‑type 12‑cylinder medium‑speed diesel main engine delivering up to 4 320 kW at 800 rpm, designed for HFO/MDO operation with Tier II/III emissions compliance.
4320.0 kW
Power
Engine Specifications
12
Cylinders
270 mm
Bore
380 mm
Stroke
4-stroke
Stroke Type
Components & Design
Component data being added…
Technical Data
Displacement (6-cyl)
130.8 L
Displacement (9-cyl)
196.2 L
Compression Ratio
15.9
Max Combustion Pressure
200 bar
Mean Effective Pressure (MEP)
23.5 bar
Power per Cylinder
340 kW @ 800 rpm
SFOC @ 100% MCR (HFO)
188 g/kWh
SFOC @ 85% MCR (HFO)
185 g/kWh
SFOC (MDO/MGO) @ 100% MCR
191 g/kWh
SFOC (MDO/MGO) @ 85% MCR
186 g/kWh
Dry Mass 6L27/38
29.0 metric tons
Dry Mass 9L27/38
39.5 metric tons
Length 6L27/38
5070 mm
Length 9L27/38
6405 mm
Engine Width
2035 mm
Turbocharger System
High-efficiency MAN TCR constant-pressure
Emission Standards
IMO Tier II, Tier III (with SCR)
Swept Volume per Cylinder
21.76 dm³
power kw
4320
rpm
800
fuel type
HFO/MDO
configuration
V
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Common failures & inspection points
Fuel oil contamination (soot formation, increased oil viscosity). Catalytic (cat) fines from degraded fuel oil cause abrasive wear of bearing surfaces and cylin
Fuel injector opening pressure drop (up to 50 bar after few operating hours in new injectors) and broken injector springs detected during 2000-hour inspections.
Piston crown thermal fatigue cracking due to high combustion temperatures and thermal/mechanical stress. Cracks typically radiate from crown center.
Cylinder liner wear near top dead center (TDC) due to high temperature, low oil viscosity, and thin oil film causing asperity contacts between piston ring and l
Crankshaft and main bearing wear/failure caused by inadequate lubrication, incorrect bearing clearance, or poor oil circulation. Connecting rod bearing failure
Type-general inspection and maintenance points for this equipment category — not model-specific.
Suppliers & Spare Parts
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Equipment Model #124334
· ✓ still in production