The rated advantage of diesel engine power units is their high thermal efficiency, and their fuel consumption is significantly lower than that of steam engine power units. Most modern Marine diesel engines are low-speed engines with a rotational speed of about 100 revolutions per minute, which can directly drive the propeller. Especially in the early 1980s, long-stroke and ultra-long-stroke low-speed engines emerged, with the rotational speed reduced to below 70 revolutions per minute, enabling the propellers to achieve optimal efficiency. After World War II, high-power medium-speed engines were gradually applied to ships. It arranges the cylinders in a V shape and adopts reduction gears, which not only greatly reduces the weight of the fuselage but also helps to improve the efficiency of the propeller. Due to the short and compact fuselage of medium-speed diesel engines, the area and height of the engine room can be reduced. Therefore, they are particularly suitable for ocean-going vessels with tail engine rooms and those with engine rooms located beneath the deck.
After continuous improvement, the diesel engine power unit has become increasingly perfect. It has low fuel consumption, can use cheap residual oil, has high reliability, and the maintenance interval can last for more than 30,000 hours. Its thermal efficiency is close to 50%. Therefore, it has become the most widely used ship power unit at present.
For more questions about the generator set, please call the Beidou Power team. More than ten years of professional production and sales of power generation equipment experience, more professional engineer team to serve you, choose Beidou power is to choose rest assured, welcome on-site factory inspection.
Post time: Jun-18-2025