Main Engine 4-Stroke · Main Engines (4-Stroke)
Designed with a focus on reliability and efficiency, the new Mk. 3 version of the well-proven MAN L23/30H GenSet family delivers more power while reducing fuel and maintenance costs. The 6L23/30H Mk. 3, in particular, stands out for its increased power output per cylinder, compliance with 2020 SOx regulations, and the longest time between overhauls (TBO) in its class. This engine is available in various configurations, including a 6-cylinder version that can produce up to 1,200 kW at 900 rpm or 1,062 kW at 720 rpm. The 6L23/30H Mk. 3 is equipped with several new design features that enhance its performance and ease of maintenance. The connecting rod applies a marine-head-type design, allowing for easy dismantling without opening the crankshaft bearing. Additionally, the self-aligning bedplate installation with only three conical supports simplifies the setup process. The SaCoSone safety and control system, featuring an electronic speed governor, ensures reliable operation. For shipowners looking to comply with the 2020 sulphur cap, the 6L23/30H Mk. 3 is an excellent choice, as it can operate on low-sulphur fuel oils without compromising performance. The engine's design includes coated fuel oil pumps to address the poorer lubricating properties of these fuels. This makes it possible to select a shorter and lighter engine with one cylinder unit less compared to the Mk. 2 version, or to extend the TBO by reducing the engine speed from 900 to 720 rpm, thereby increasing operational efficiency and reducing downtime.
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