Abstract
In order to protect the environment and check the emission of polluted gas, this article conducts research on energy saving and emission reduction technologies for marine diesel engines and their applications. In order to achieve this goal, we can improve and optimize combustion efficiency, improve combustion efficiency and combustion efficiency of diesel engines, and use new engines with higher and cleaner energy sources when using new energy sources with higher efficiency and less diesel, thus reducing pollution and achieving environmental protection objectives. The application of energy-saving and emission reduction technology in marine diesel engines can make them more efficient, improve efficiency, and facilitate combustion of diesel engines, reduce nitrogen oxides, recover heat generated by diesel engines, and improve energy consumption.