9L27/38A

This marine propulsion engine operates on a 4-stroke principle, featuring a vertical configuration with a bore and stroke of 270 mm and 380 mm respectively. It is designed to deliver a power output of 3150 kW at 800 rpm, running on Heavy Fuel Oil (HFO), Marine Diesel Oil (MDO), or Marine Gas Oil (MGO). The engine has a displacement of 196.2 liters with a compression ratio of 15.9, making it efficient and reliable for maritime applications. The MAN 9L27/38A is equipped with a high-efficiency MAN TCR constant-pressure turbocharger system and meets IMO Tier II and Tier III emission standards with Selective Catalytic Reduction (SCR) technology. The engine’s dry mass is 39.5 metric tons, and it measures 6405 mm in length with a width of 2035 mm. Common issues reported include fuel oil contamination, fuel injector pressure drop, piston crown thermal fatigue cracking, cylinder liner wear near top dead center, and crankshaft and main bearing wear/failure due to inadequate lubrication or incorrect bearing clearance.