Main Engine 2-Stroke · Main Engines (2-Stroke)
This equipment category includes large-scale marine propulsion systems. The APL Maritime HYUNDAI-MANB&W 12K98MC-C is a 68520 kW engine designed for variable speed propulsion with fixed pitch propellers. Manufactured in 2005, it operates under Category 3 regulations and features a 12-cylinder, 2-stroke compression ignition design with direct injection and turbocharging. The engine's displacement per cylinder is 1810.3 liters, and it reaches maximum torque at 104 RPM. Common failures include issues related to cylinder condition, fuel-injection systems, scavenge air passages, exhaust valves, main bearings, and starting air systems. Maintenance involves monitoring key parameters such as bearing temperatures, lubricating oil analysis, and cylinder exhaust temperatures, with a focus on preventing and addressing wear and combustion-related faults.
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What our service work and the manufacturer documentation say about keeping this model running.
Trend cylinder exhaust temperatures, cylinder lubrication, scavenge condition, bearing temperatures, lubricating-oil analysis and shaft or engine vibration. Inspect scavenge spaces and accessible cylinder components for deposits, blow-by evidence, liner condition, broken ring debris and signs of hot spots or scavenge fire. Check fuel-injection equipment, starting-air components, cooling-water circuits, lubricating-oil systems and exhaust components for leakage and correct operation. Review crankcase and bearing-monitoring records and inspect thrust-bearing and shafting interfaces where accessible. A surveyor should verify alarms, shutdowns, overspeed protection, turning-gear interlocks, starting-air safety arrangements and emergency controls applicable to the installation. For cylinder dimensions, rotational speed, pressures, clearances, temperatures, wear limits and setting values, refer to the manufacturer documentation for the exact figure.
Carry fuel-injection components appropriate to the engine, cylinder-lubrication service parts, seals and gaskets, filters, starting-air valve or control components and essential pump spares. For critical ocean-going propulsion, the onboard spare scale commonly also covers selected cylinder-head or exhaust-valve parts, piston-ring and liner-service items, bearing-related spares and key sensors or control components, subject to the actual engine design. Use the manufacturer and class spare requirements for the exact inventory.
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