Main Engine 4-Stroke · Main Engines (4-Stroke)
The Yanmar 6L6EY26 belongs to the 6EY26 engine family, designed for marine commercial applications. This powerful engine boasts a bore of 260 mm and a stroke of 385 mm, delivering a robust 2220 kW of power at 720 rpm. It runs on heavy fuel oil (HFO) or marine diesel oil (MDO) and operates as a four-stroke, medium-speed engine. The engine's verified specifications include a displacement of 122.6 liters, making it suitable for high-performance requirements in marine propulsion and power generation. Common issues with the Yanmar 6L6EY26 include turbocharger wear due to contaminated oil or carbon deposits, which can lead to smoke emission under load. Cylinder head gasket leaks, caused by scratches on sealing surfaces or improper assembly, can also occur. Additionally, fuel injection nozzle wear resulting from cavitation and causing trumpet-shaped enlargement of the nozzle orifice may affect fuel atomization and pressure buildup. Furthermore, bearing wear and crankshaft journal wear can be monitored through oil analysis and bearing wear monitoring systems to prevent significant damage.
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