船用柴油机的热效率高、经济性好、起动容易、对各类船舶有很大适应性，问世

船用柴油机的热效率高、经济性好、起动容易、对各类船舶有很大适应性，问世以后很快就被用作船舶推进动力。至20世纪50年代，在新建造的船舶中，柴油机几乎完全取代了蒸汽机。船用柴油机已是民用船舶、中小型舰艇和常规潜艇的主要动力。船用柴油机按其在船舶中的作用可分为主机和辅机。主机用作船舶的推进动力，辅机用来带动发电机、空气压缩机或水泵等。 船用柴油机一般分为高速、中速和低速柴油机

船用柴油机的热效率高、经济性好、起动容易、对各类船舶有很大适应性，问世以后很快就被用作船舶推进动力。 至20世纪50年代，在新建造的船舶中，柴油机几乎完全取代了蒸汽机。 船用柴油机已是民用船舶、中小型舰艇和常规潜艇的主要动力。 船用柴油机按其在船舶中的作用可分为主机和辅机。 主机用作船舶的推进动力，辅机用来带动发电机、空气压缩机或水泵等。 船用柴油机一般分为高速、中速和低速柴油机

The marine diesel engine has the advantages of high thermal efficiency, good economy, easy starting and great adaptability to all kinds of ships. It has been used as the propulsion power of ships soon after its coming out. By the 1950s, diesel engines almost completely replaced steam engines in newly built ships. Marine diesel engine is the main power of civil ships, small and medium-sized ships and conventional submarines. Marine diesel engine can be divided into main engine and auxiliary engine according to its function in ship. The main engine is used as the propulsion power of the ship, and the auxiliary engine is used to drive the generator, air compressor or water pump, etc. Marine diesel engines are generally divided into high-speed, medium speed and low-speed diesel engines<br>