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Wärtsilä
7LW32SG
The Wärtsilä 7LW32SG is a 7‑cylinder inline 4‑stroke trunk piston main engine delivering 2 345 kW at 750 rpm, optimized for spark‑ignited LNG operation with turbocharging and intercooling.
2345.0 kW
Power
Engine Specifications
7
Cylinders
320 mm
Bore
400 mm
Stroke
4-stroke
Stroke Type
Components & Design
Component data being added…
Technical Data
Displacement per cylinder
32.2 liters
Specific power output (inline)
580 kW/cylinder (at 750 RPM)
Specific power output (V-config)
500-420 kW/cylinder (W32GD: 405-420 kW/cyl)
Configuration
4-stroke, non-reversible, turbocharged, intercooled, direct fuel injection
Valves per cylinder
2 inlet + 2 exhaust
Cooling system
Seawater and freshwater cooling; charge air cooling via cooler
Turbocharger
Napier 357 (common); Wärtsilä turbocharger safety package available
Compliance
IMO Tier II (MARPOL 73/78 Annex VI)
power kw
2345
rpm
750
fuel type
LNG (Spark-Ignited)
configuration
L
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Common failures & inspection points
Injection pump fuel rack stickiness (HFO operation) - reported in power plants using HFO 380, affecting reliable fuel delivery
Exhaust valve seat wear and carbon deposits - standard maintenance item due to high exhaust temperatures; valve seats made from Ni-Cr super alloy (ASTM A560 60C
Camshaft gear backlash and timing gear pitting/spalling - wear surfaces require monitoring during major overhauls
Bearing shell installation alignment critical - tin-aluminium-on-chrome-iron tribological pairing; 110% overload limit for 1 hour in 12
Fuel injection nozzle clogging (dirt/debris, contaminated fuel) - HFO installations use oil-cooled nozzles; MDF uses non-cooled nozzles
Type-general inspection and maintenance points for this equipment category — not model-specific.
Suppliers & Spare Parts
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Equipment Model #124319
· ✓ still in production
Wer liefert dieses Teil? 194 Betriebe im Verzeichnis · 15 aus Herstellerlisten
Chongqing Chuanqing Marine Power Equipment Co., Ltd.
Chongqing, China
FM-Power Serviços e Peças
Rio de Janeiro, Brazil
MARE Supply & Services
Haarlem, Netherlands
Marine Ecology Equipment OÜ
Tallinn, Estonia
OSM International
Miami, United States
Qinhuangdao Hy Marine Machinery Equipment Co., Ltd.
Qinhuangdao, China
World Marine Automation System
Busan, South Korea
2K Shipping & Trading Ltd
Kayaboyun, Turkey
A & D Sales Ltd
Skelmersdale, United Kingdom
ALME MARINE SA
Greece
ANEXUS
Barcelona, Spain
Abhi Marine Pvt. Ltd.
Mumbai, India
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