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Wärtsilä
8LW14-GS-50Hz
The Wärtsilä 8LW14‑GS‑50Hz is an 8‑cylinder, medium‑speed (1500 rpm) four‑stroke diesel generator set delivering 496 kW (471 kW net) at 50 Hz, optimized for low specific fuel consumption and compact installation on merchant vessels.
496.0 kW
Power
Engine Specifications
8
Cylinders
140 mm
Bore
170 mm
Stroke
4-stroke
Stroke Type
Components & Design
Component data being added…
Technical Data
Cylinder power
610 kW/cyl (diesel)
Mean effective pressure (BMEP)
30 bar
SFOC (diesel)
167.7 g/kWh (optimal point)
Weight (8V31)
~57.1 tonnes (dry, diesel)
Weight (16V31)
~89–92.5 tonnes (dry, diesel)
Piston speed
10.75 m/s
Turbocharging
Two-stage turbocharging with intercooling
Fuel injection
Common rail direct injection
Valve layout
2 inlet, 2 exhaust valves per cylinder
power kw
496
rpm
1500
fuel type
MDO
configuration
L
genset kw
471
genset kva
589
frequency hz
50
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Common failures & inspection points
Low-load operation: Poor combustion, carbon deposit accumulation in cylinders, turbocharger fouling, economizer fouling. Wärtsilä offers Slow Steaming Upgrade K
Cylinder liner wear and scuffing (general 4-stroke diesel pattern, not W31-specific): Exacerbated by inadequate lubrication oil film, excessive cylinder tempera
Fuel injection system: Common rail system generally robust; however, HP fuel pump overhaul intervals are extended to 24,000 hrs (vs. 12,000 in prior-gen engines
Scavenge space deposit accumulation and fire risk (class-wide diesel phenomenon): Carbonized lube oil and unburnt fuel residues accumulate in scavenge space. Ex
Type-general inspection and maintenance points for this equipment category — not model-specific.
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Equipment Model #124604
· ✓ still in production