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6LW31-GS-50Hz

Auxiliary Engine (Generator Set) · Auxiliary Engines

Class-certified type (DNV register) · technical data sheet not yet verified
1,770 kWPower
6Cylinders
310 mmBore
430 mmStroke

Regular maintenance is crucial for the reliable operation of marine engines like the Wärtsilä 6LW31-GS-50Hz, which is designed to run efficiently on heavy fuel oil (HFO) or marine diesel oil (MDO). This engine, part of the W31-GS family, boasts a power output of 1770 kW at 750 rpm, with each of its six cylinders contributing approximately 610 kW. It features a two-stage turbocharging system with intercooling, ensuring optimal combustion and efficiency. The engine's robust common rail direct injection system helps maintain performance, though high-pressure fuel pump overhauls are recommended after 24,000 hours of operation. Wärtsilä also offers upgrades to improve performance during low-load operation, addressing issues such as poor combustion and carbon accumulation. Regular checks for crankcase deposits are necessary to prevent potential fire risks, a common issue in diesel engines.

Specifications

Technical data.reference — unverified

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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)1770
Speed (rpm)750
Fuel TypeHFO/MDO
ConfigurationL
Genset Output (kW)1682
Genset Output (kVA)2102
Frequency (Hz)50
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