Main Engine 4-Stroke · Main Engines (4-Stroke)
This dual-fuel engine operates on a 4-stroke cycle and is designed to run efficiently with either LNG or HFO fuel types. Manufactured by HiMSEN under the model designation 8LH21/32 DF, it features an 8-cylinder inline configuration with a bore of 210 mm and a stroke of 320 mm. The engine's power output is rated at 1600 kW when running at 900 rpm. With a compression ratio of 17:1 and a maximum combustion pressure of 200 bar, this engine ensures high efficiency while maintaining Tier II and Tier III compliance with optional SCR systems. Known for its robust design, it has been in service since 2001, with over 5,000 engines delivered by 2011. Regular maintenance is crucial to prevent common issues such as piston cooling nozzle blockage, crankcase oil mist build-up due to defective piston rings or worn liners, exhaust valve seat erosion, and fuel injection nozzle coking, all of which can reduce engine performance and reliability.
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