5LH17/28

Designed for robust performance in marine environments, the 5LH17/28 is a prime mover that delivers reliable power and efficiency. This engine, part of the H17/28 family, features a powerful output of 725 kW at 1000 RPM, making it suitable for a wide range of shipboard applications, including generator sets and auxiliary engines. The 5LH17/28 is configured with five cylinders in an inline (L) layout, each with a bore of 170 mm and a stroke of 280 mm. It operates on Medium Diesel Oil (MDO) and can also handle Heavy Fuel Oil (HFO) up to 700 cSt at 50°C, thanks to its Uni-Fuel concept. The engine is turbocharged with enhanced Miller timing, ensuring high efficiency and performance. Its monoblock cast iron construction provides durability, while the compression ratio of 17:1 optimizes fuel combustion. The 5LH17/28 meets IMO Tier II NOx regulations, making it environmentally compliant. Despite its robust design, common issues can arise, such as sticking fuel injection pumps due to low viscosity MGO, excessive carbon deposits from low sulfur fuels, and piston ring blow-by caused by hard carbon deposits. Regular maintenance checks, including verifying fuel supply viscosity, inspecting combustion chamber deposits, and measuring cylinder liner wear, are crucial for maintaining the 5LH17/28's performance and longevity.