船用LNG双燃料中速机特点及低碳运维管理
贺献忠，郭浩，楼海军，杨智远
（上海海事大学商船学院，上海 201306）
摘要： 液化天然气（Liquefied Natural Gas，LNG）是一种低碳洁净燃料，是实现航运业碳减排的过渡性关键燃料。甲
烷是一种强温室效应气体，甲烷泄漏是LNG 双燃料发动机面临的一个难题。通过优化双燃料机操作管理与科学维护来减
少温室气体的排放，探索零排放发动机创新之路。结合多年双燃料发动机管理经验，可以进一步发掘商用船用双燃料发
动机全生命周期使用价值，降低发动机日常运营过程中的碳排放，探索在当前双碳能源背景下的新型低碳运维管理方
法。详细分析了瓦锡兰6L20DF 型双燃料柴油机的特点及日常操作管理中的注意事项，从轮机管理角度给出双燃料机长
期保持在燃气模式下高效运转及减少甲烷泄漏量的维护措施，通过提高船用双燃料发动机低碳运维管理水平确保船舶
安全。
关键词： 液化天然气；双燃料；船舶发动机；低碳管理
中图分类号： U692.4      文献标志码： A      文章编号： 2095-0802-(2023)04-0001-05
Characteristics and Low-carbon Operation and Maintenance Management of Marine
LNG Dual-fuel Medium-speed Engines
HE Xianzhong, GUO Hao, LOU Haijun, YANG Zhiyuan
(Merchant Marine College, Shanghai Maritime University, Shanghai 201306, China)
Abstract: Liquefied natural gas (LNG) is a kind of clean low-carbon fuel, which is the transitional key fuel to achieve carbon
emission reduction in the shipping industry. Methane is a strong greenhouse gas, and methane slip is a difficult problem faced by
LNG dual-fuel engine. Through reducing greenhouse gas emissions by optimizing dual-fuel engine operation management and
scientific maintenance, this paper explored the new road of net-zero emission engine. Based on years of experience in dual-fuel
engine management, it can further explore the full life cycle use value of commercial marine dual-fuel engines, reduce the carbon
emissions in the daily operation of engines, and explore new low-carbon operation and maintenance management methods under
the current dual carbon energy background. This paper analyzed the characteristics and the precautions in daily operation
management of Wartsila6L20DF dual-fuel engine in detail, put forward the maintenance measures to keep the dual-fuel engine
operating efficiently in gas-mode for a long time and to reduce methane slip from the point of view of marine engine management,
aiming at strengthening the low-carbon operation and maintenance management level of the marine dual-fuel engines to ensure
the safety of ships.

Key words: LNG; dual-fuel; marine engine; low-carbon management