Main Engine 4-Stroke · Main Engines (4-Stroke)
This engine is commonly used in marine vessels for auxiliary power generation, where it provides reliable operation under various environmental conditions. The 9L H25/33P is a 4-stroke diesel engine with a bore of 250 mm and a stroke of 330 mm, delivering a maximum continuous power of 4320 kW at 900 RPM. It is compliant with IMO Tier II emissions standards and is designed to operate efficiently on Marine Diesel Oil (MDO) and Marine Gas Oil (MGO). The engine features a compact and cost-effective design, manufactured in-house by Hyundai Heavy Industries. It has a growing global market share, with over 10,000 units delivered to more than 550 clients across 43 countries. Regular maintenance is essential to prevent common issues such as fuel injection pump sticking due to sludge accumulation or low lubricity in low-sulphur fuels, excessive carbon deposits in the combustion chamber, and turbocharger pressure ratio performance degradation.
Every value below comes from the manufacturer datasheet or class-society record on file for this model.
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