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7LH25/33-GS-50Hz

Auxiliary Engine (Generator Set) · Auxiliary Engines

Class-certified type (DNV register) · technical data sheet not yet verified
1,925 kWPower
7Cylinders
250 mmBore
330 mmStroke

Generating reliable power in demanding marine environments is crucial for smooth ship operations. This HiMSEN engine, with its robust design, delivers a powerful 1925 kW output, suitable for a variety of marine applications. The 7LH25/33-GS-50Hz model features a 7-cylinder, 4-stroke configuration, boasting a bore of 250 mm and a stroke of 330 mm. Its impressive power output translates to 1829 kW of generator output at a frequency of 50 Hz. This engine is designed to operate on HFO/MDO fuel and is capable of achieving a mean piston speed between 7.9 and 11 m/s. Engine performance is enhanced by a compression ratio of 17:1 and a maximum combustion pressure of 200 bar. The engine's dry weight comes in at 22.5 metric tons. Owners should be aware of potential common failures, including fuel injection pump sticking and excessive carbon deposits, particularly when operating on low-sulphur fuels. Regular inspections and maintenance, as outlined in HiMSEN service letters and technical documentation, are essential to ensure the longevity and reliable performance of this engine.

Specifications

Technical data.from datasheet

Every value below comes from the manufacturer datasheet or class-society record on file for this model.

Swept volume per cylinder16.2 dm³
Compression ratio17:1
Max combustion pressure200 bar
SFOC (100% MCR)181.0 g/kWh (diesel operation)
Oil consumption0.6 g/kWh
6H25/33 dry weight20.2 metric tons
7H25/33 dry weight22.5 metric tons
8H25/33 dry weight24.1 metric tons
6H25/33M rated output1,440-1,596 kW (depending on RPM)
7H25/33M rated output1,680-1,995 kW (depending on RPM)
8H25/33M rated output2,320 kW at 900 RPM
9H25/33M rated output2,565 kW at 900/1000 RPM; 2,700 kW max
Mean piston speed range7.9-11.0 m/s
Mean effective pressure22.2-27.2 bar (varies by configuration)
Emissions complianceIMO Tier II, Tier III (with SCR - Selective Catalytic Reduction)
Power (kW)1925
Speed (rpm)750
Fuel TypeHFO/MDO
ConfigurationL
Genset Output (kW)1829
Genset Output (kVA)2286
Frequency (Hz)50
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Download datasheet (PDF) (4721 KB)
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