In recent years, diesel engine generator sets have been increasingly used in ships. In addition to being a conventional unit for providing ship power, it is also increasingly used for electric propulsion. Due to its unique advantages, the use of full or semi electric propulsion has become a trend in the development of propulsion systems for ships weighing thousands of tons or more, especially military ships. The diesel engine is mainly used as the prime mover for the ship's generator set, and the fuel cooler is crucial for cooling the diesel engine oil. The diesel engine cools the fuel through seawater to achieve the required performance of the diesel engine.

1. Adopting a constant pressure turbocharging system and a high-efficiency exhaust turbocharger

2. Increase the stroke to cylinder diameter ratio S/D

3. Increase the ratio pz/pe of the maximum bursting pressure pz to the mean effective pressure pe

4. Increase compression ratio ε

5. Adopting variable injection timing (VIT) mechanism

6. Reduce friction loss work and improve mechanical efficiency η m

7. Shaft generator (PTO)

8. Diesel engine waste heat reuse

9. Improving injection and combustion technology