【摘要】 针对现有船舶动力应用甲醇燃料的方式，从甲醇的特点、甲醇混合气的形成、燃烧模式等方面开展分析，结果表明：高速船用柴油机改装为点燃式甲醇燃料发动机简便易行；低速船舶内燃机缸径大、缸盖空间充裕，便于多喷嘴布置，实现缸内直喷微量燃油引燃、甲醇燃料压燃模式，可在满足排放法规要求的前提下，在双燃料及纯燃油模式间切换；中高速船舶内燃机缸盖结构紧凑，适合采用柴油在缸内与甲醇混合气共燃的模式。更多还原

【Abstract】 In response to the existing way of methanol fuel applied to marine power,the analysis was carried out from the aspects of methanol characteristics,mixture formation,and combustion mode. The results show that:Retrofitting a high speed marine diesel engine into a spark ignition methanol fuel engine is simple and easy;The low-speed marine internal combustion engine has a large cylinder diameter and sufficient space in the cylinder head,which facilitates the layout of multiple nozzles to realize direct injection micro-pilot in the cylinder and methanol fuel compression ignition. On the premise that the emission meets the requirements of regulations,it can switch between dual fuel and pure fuel modes;The cylinder head of medium and high speed marine internal combustion engines is compact,which is suitable for the mode of diesel-methanol mixture combustion in the cylinder.更多还原