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MAN Energy Solutions

MAN 9L48/60CR

MAN L/V 48/60CR Common Rail — Viertakt-Marinediesel, Bohrung 480 x Hub 600 mm, 500-514 RPM rated speed rpm, 7,200 - 21,600 (6L48/60CR at 7,200 kW to 18V48/60CR estimated; 9L48/60CR at 10,800 kW). Brennstoff: Marine Diesel (HFO up to 700 cSt, ULSFO, VLSFO). Status: Production (established platform; succeeded by MAN 45/60CR from 2020+ for new orders). Verifiziert, Datenblatt verlinkt.

10800.0 kW
Power

Engine Specifications

9
Cylinders
480 mm
Bore
600 mm
Stroke

Components & Design

Component data being added…

Technical Data

Bore 480 mm
Stroke 600 mm
Swept volume per cylinder 108.6 dm³
Fuel consumption (SFOC) at MCR 181 g/kWh
Fuel consumption (SFOC) at 85% MCR 173-173.5 g/kWh
Specific lube oil consumption (SLOC) 0.5 g/kWh
Mean Effective Pressure (MEP) 25.8-26.5 bar
Power per cylinder 1,200 kW per cylinder (V-config), 1,200 kW per cylinder (L-config)
Injection system Advanced electronic common rail (HPCR)
Turbocharging High efficiency constant pressure MAN TCA series with two-stage configuration
Emissions compliance IMO Tier II and IMO Tier III (with SCR system)
Power-to-weight ratio 12.3-14.7 kg/kW (varies by configuration)
configuration L
rpm 500
fuel type HFO/MGO
technology Common Rail (CR)
displacement l per cyl 108.6

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Common failures & inspection points

Fuel injector deposits and carbon buildup: High pressure common rail systems susceptible to deposits from fuel breakdown at extreme pressures/temperatures, caus

Visual inspection of injector nozzles for carbon deposits; pressure test injectors at maintenance intervals; monitor fuel system pressure for irregularities; check injector spray patterns

Cracked cylinder liner piston rings with reduced service life (50% of expected) and land ring cracking due to fuel contamination and water ingress in common rai

Cylinder bore scope inspection for microcracks in ring grooves; measure ring wear patterns; test for water in lube oil via Karl Fischer moisture test; inspect piston rings for glazing or scuffing

Water contamination effects: Molecular-level water at injection pressures causes severe surface damage to high-pressure pump components, injectors, and control

Monthly/quarterly water drain from fuel tank; Dean/Stark Karl Fischer moisture analysis of fuel; inspect fuel line color and smell for emulsification; monitor accumulator/pump outlet for milky appearance

Piston ring scuffing risk on low-sulphur fuels (ULSFO/VLSFO) due to reduced film strength and tribology changes; requires cermet-coated rings for mitigation

Borescope inspection of piston crown and ring grooves during overhaul; measure cylinder liner wear patterns and surface finish; temperature monitoring for ring zone overheating; verify use of cermet-coated rings installed

Turbocharger bearing and waste gate issues: Carbon buildup on waste gate valve can cause seizure; oil starvation or coolant contamination causes bearing wear an

Visual inspection of turbo bearing play and thrust movement; check waste gate actuator response to manual testing; monitor exhaust back-pressure for abnormalities; verify clean oil supply to turbo bearings; inspect oil cooler for proper function

Type-general inspection and maintenance points for this equipment category — not model-specific.

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Equipment Model #66697 · ✓ still in production