5LH21/32 DF

Marine engineers and operators rely on robust and efficient engines to ensure the smooth operation and reliability of their vessels. One such reliable power source is the HiMSEN 5LH21/32 DF, a dual-fuel engine that can run on LNG or Heavy Fuel Oil (HFO). This engine boasts a power output of 1000 kW at 900 rpm, making it suitable for a wide range of maritime applications. Its configuration includes five cylinders with a bore of 210 mm and a stroke of 320 mm, providing a compression ratio of 17:1 and a maximum combustion pressure of 200 bar. The 5LH21/32 DF is designed to meet Tier II and Tier III emission standards with the use of Selective Catalytic Reduction (SCR) technology. Common maintenance concerns include piston cooling nozzle blockages due to gasket residue and combustion deposits, crankcase oil mist build-up caused by blow-by from defective piston rings or worn liners, exhaust valve seat erosion due to high combustion temperatures, and fuel injection nozzle coking from poor fuel quality and high combustion temperatures.