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Caterpillar
3516C Marine
The Caterpillar 3516C (M32C) is a 16‑cylinder, high‑speed marine diesel engine delivering up to ~2 350 kW at 1 800 rpm, featuring electronic unit injection and ACERT technology for IMO Tier II compliance.
2350.0 kW
Power
Engine Specifications
16
Cylinders
170 mm
Bore
190 mm
Stroke
2,350 kW
MCR Power
1800.0 rpm
MCR RPM
213.0 g/kWh
SFC
4-stroke
Stroke Type
Family: Caterpillar Cat 3500 Series
· Tier: IMO Tier II
· Fuel: MDO, MGO
Other Cylinder Configurations 2
Components & Design
Engine Control Unit (ECU / ECS)
Caterpillar
Cat 3516 ECM (Electronic Control Module)
Full-authority ADEM ECM controls injection timing, fuel quantity, and engine protection. Keep spare ECM on board.
Lead time: 4 wk
8.0 kg
Fuel Valve (Injector Nozzle)
Caterpillar
Cat 3516 MEUI Unit Injector
Mechanically-actuated, electronically-controlled unit injector (MEUI). Replace at 8,000-12,000 hrs or per oil analysis.
Lead time: 3 wk
6.0 kg
Scavenge Air Cooler (SAC)
Caterpillar
Cat 3516 Aftercooler (SCAC)
Separate-circuit aftercooler (SCAC). Clean air side at 4,000 hrs. Pressure test coolant side annually.
Lead time: 6 wk
120.0 kg
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)
unified from engine model
True
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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.
Suppliers & Spare Parts
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Equipment Model #38052
· ✓ still in production