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Wärtsilä
14RT-flex96C
The Wärtsilä 14RT‑flex96C is a 2‑stroke, low‑speed marine diesel engine delivering up to 80 MW at 102 rpm; its defining feature is the common‑rail fuel injection and electronic exhaust valve control that provide world‑leading specific output for ultra‑large vessels.
80080.0 kW
Power
Engine Specifications
14
Cylinders
960 mm
Bore
2500 mm
Stroke
80,080 kW
MCR Power
102.0 rpm
MCR RPM
2-stroke
Stroke Type
Family: Wartsila RT-flex
· Tier: IMO Tier II
· Fuel: HFO, VLSFO, MDO
Other Cylinder Configurations 50
5RT-flex35
5 cyl
· 4,200 kW
5RT-flex40
5 cyl
· 5,300 kW
5RT-flex50
5 cyl
· 8,100 kW
5RT-flex50-B
5 cyl
· 8,800 kW
5RT-flex50-D
5 cyl
· 8,100 kW
5RT-flex58T
5 cyl
· 10,800 kW
5RT-flex58T-B
5 cyl
· 11,700 kW
5RT-flex58T-D
5 cyl
· 10,800 kW
5RT-flex58T-G
5 cyl
· 10,800 kW
5RT-flex60C
5 cyl
· 12,400 kW
5RT-flex60C-B
5 cyl
· 13,450 kW
5RT-flex68-B
5 cyl
· 15,300 kW
5RT-flex68-D
5 cyl
· 14,350 kW
5RT-flex82C
5 cyl
· 17,700 kW
5RT-flex82T
5 cyl
· 17,700 kW
5RT-flex84T-D
5 cyl
· 22,600 kW
6RT-flex35
6 cyl
· 5,040 kW
6RT-flex40
6 cyl
· 6,360 kW
6RT-flex50
6 cyl
· 9,960 kW
6RT-flex50-B
6 cyl
· 10,560 kW
6RT-flex50-D
6 cyl
· 9,720 kW
6RT-flex58T
6 cyl
· 12,960 kW
6RT-flex58T-B
6 cyl
· 14,040 kW
6RT-flex58T-D
6 cyl
· 12,960 kW
6RT-flex58T-G
6 cyl
· 12,960 kW
6RT-flex60C
6 cyl
· 14,880 kW
6RT-flex60C-B
6 cyl
· 16,140 kW
6RT-flex68-B
6 cyl
· 18,360 kW
6RT-flex68-D
6 cyl
· 17,220 kW
6RT-flex82C
6 cyl
· 21,240 kW
6RT-flex82T
6 cyl
· 21,240 kW
6RT-flex84T-D
6 cyl
· 27,120 kW
6RT-flex96C
6 cyl
· 34,320 kW
6RT-flex96C-B
6 cyl
· 36,120 kW
6RT-flex96C-D
6 cyl
· 34,320 kW
7RT-flex35
7 cyl
· 5,880 kW
7RT-flex40
7 cyl
· 7,420 kW
7RT-flex50
7 cyl
· 11,340 kW
7RT-flex50-B
7 cyl
· 12,320 kW
7RT-flex50-D
7 cyl
· 11,340 kW
7RT-flex58T
7 cyl
· 15,120 kW
7RT-flex58T-B
7 cyl
· 16,380 kW
7RT-flex58T-D
7 cyl
· 15,120 kW
7RT-flex58T-G
7 cyl
· 15,120 kW
7RT-flex60C
7 cyl
· 17,360 kW
7RT-flex60C-B
7 cyl
· 17,360 kW
7RT-flex68-B
7 cyl
· 21,420 kW
7RT-flex68-D
7 cyl
· 20,090 kW
7RT-flex82C
7 cyl
· 24,780 kW
7RT-flex82T
7 cyl
· 24,780 kW
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
unified from engine model
True
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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.
Suppliers & Spare Parts
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Maritime Network →Manuals
-
operating
WIN-GD X-DF Operating ManualWinGD (Winterthur Gas & Diesel)
-
maintenance
WIN-GD Maintenance ManualWinGD (Winterthur Gas & Diesel)
-
technical_data
WIN-GD General Technical DataWinGD (Winterthur Gas & Diesel)
-
spare_parts
WIN-GD Spare Parts CatalogueWinGD (Winterthur Gas & Diesel)
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Equipment Model #38944
· ✓ still in production