Main Engine 4-Stroke · Main Engines (4-Stroke)
This engine is commonly used in marine vessels for its efficient and reliable performance, particularly in dual-fuel applications where both methanol and marine diesel oil (MDO) can be utilized. The HiMSEN 7LH32/40 Methanol engine operates at 720 rpm and delivers a power output of 3010 kW. It features a 4-stroke cycle and a Miller cycle design, which contributes to its high efficiency and low emissions. The engine has a bore of 320 mm and a stroke of 400 mm, with a compression ratio of 15:1. It is designed to handle a wide range of fuel types, including heavy fuel oil (HFO) up to 700 cSt at 50°C, making it versatile for various marine operations. Common maintenance issues include turbocharger fouling, exhaust gas temperature imbalance, piston ring damage, cylinder liner scuffing, and fuel injection nozzle coking, all of which require regular inspection and timely intervention to ensure optimal engine performance and longevity.
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