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10LW38

Main Engine 4-Stroke · Main Engines (4-Stroke)

Class-certified type (DNV register) · technical data sheet not yet verified
5,000 kWPower
10Cylinders
380 mmBore
475 mmStroke

Regular maintenance is crucial for ensuring optimal performance and longevity of marine engines. Wärtsilä's 10LW38, part of the W38 family, is a robust 4-stroke engine designed to deliver reliable power in demanding maritime environments. With a rated output of 5000 kW at 600 rpm, this engine features a bore of 380 mm and a stroke of 475 mm, providing efficient operation across various fuel types, including HFO and MDO. Common maintenance concerns include issues during low-load operations, such as poor combustion and carbon deposit accumulation in cylinders and turbochargers. Wärtsilä offers a Slow Steaming Upgrade to mitigate these problems. Cylinder liner wear and scuffing can also occur due to inadequate lubrication, while the common rail fuel injection system, though generally robust, requires HP fuel pump overhauls every 24,000 hours. Crankcase deposits pose another risk, with carbonized lube oil and unburnt fuel residues potentially leading to oil mist build-up and fires. Despite these challenges, the 10LW38 is a well-engineered solution, featuring two-stage turbocharging with intercooling and a mean effective pressure of 30 bar, ensuring high efficiency and performance.

Specifications

Technical data.reference — unverified

Cylinder power610 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 speed10.75 m/s
TurbochargingTwo-stage turbocharging with intercooling
Fuel injectionCommon rail direct injection
Valve layout2 inlet, 2 exhaust valves per cylinder
Power (kW)5000
Speed (rpm)600
Fuel TypeHFO/MDO
ConfigurationL
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