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MaK (Caterpillar)
12VM46-GS-60Hz
The MaK (Caterpillar) 12VM46‑GS‑60Hz is a V‑12, four‑stroke, turbocharged diesel engine coupled to an integrated generator set delivering roughly 7.5 MW (9.4 MVA) of electrical power for shipboard auxiliary applications.
7920.0 kW
Power
Engine Specifications
12
Cylinders
460 mm
Bore
580 mm
Stroke
4-stroke
Stroke Type
Components & Design
Component data being added…
Technical Data
Bohrung
320 mm
Hub (Reihe)
480 mm
Hub (V-Form VM32C)
480 mm (teilweise Quellen: 420 mm, Widerspruch in Sekundärdatenbanken)
Typ
4-Takt Langsamläufer, Mittelschnellläufer, direkte Einspritzung, Turbogefeuert
Brennstoff
MDO, LBF, HFO, Ultra-Low-Sulphur Fuel (75% der Flotte auf HFO)
Einführungsjahr
1994
Turbolader
Hocheffiziente Ausführung, korrosionsfreies Gehäuse ohne Wasserkühlung
Abgasnorm
IMO Tier II (IMO II)
Marktabsatz
1600+ Einheiten seit 1994 (80% Propulsion, 20% Genset)
power kw
7920
rpm
900
fuel type
HFO/MDO
configuration
V
genset kw
7524
genset kva
9405
frequency hz
60
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Common failures & inspection points
SFOC specification and boost pressure: different efficiency values depending on configuration and load range documented (177–179 g/kWh); optimization of fuel consumption
Turbocharger wear: High-efficiency design with 'low wear rate due to calibration ring' is described; durably constructed, but specific wear
Fuel quality: Required for HFO operation — contamination and sulphur content are risks; 75% of the fleet runs on HFO, therefore high management risk
Lagerschale-Überwachung: Caterpillar bietet optionales 'Crankshaft Bearing Condition Monitoring System' an — deutet auf Lagerverschleiß als Inspektionsthema hin
Cooling system corrosion at seawater inlet: Indications of typical marine corrosion in cooling systems with seawater cooling; anodes and flushing required
Type-general inspection and maintenance points for this equipment category — not model-specific.
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Equipment Model #125231
· ✓ still in production