OceanSphereENGINES

7L H25/33

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

Technical data from manufacturer or class sources · not yet verified by a person​​‍‌‌‌​​⁠‌‍‌⁠‌‌⁠⁠‌‍​
7Cylinders
250 mmBore
330 mmStroke
900 rpmMCR RPM

This product is a marine diesel engine. It is manufactured by HiMSEN and is designated the 7L H25/33. This engine is part of the H17/28 family and operates on a 4-stroke cycle. It has a bore of 250 mm and a stroke of 330 mm, resulting in a swept volume per cylinder of 16.2 dm³. The 7L H25/33 is capable of producing 3220 kW of power at 900 rpm. It can operate on a range of marine diesel fuels, including MDO, MGO, HFO, and LSFO. This engine is known for its compact and cost-effective design and is produced in-house by Hyundai Heavy Industries. The 7L H25/33 is compliant with IMO Tier II emissions standards and can be upgraded to meet Tier III standards with the addition of a Selective Catalytic Reduction (SCR) system. It is designed for both marine and stationary power generation applications and has been successfully deployed in over 10,000 units across 43 countries.

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)
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Download datasheet (PDF) (4721 KB)
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