哈尔滨工程大学学报2026，Vol.47Issue(2)：235-247,13.DOI:10.11990/jheu.202408023
船用低速二冲程气体燃料发动机早燃特性研究
The characteristics of pre-ignition of marine low-speed two-stroke gas engines
摘要
Abstract
Pre-ignition is the primary obstacle to the development of marine Otto-cycle low-speed two-stroke gas en-gines.This paper analyzes the causes and main influencing factors of pre-ignition in marine low-speed two-stroke gas en-gines.It systematically summarizes the author's recent research on the mechanism and characteristics of pre-ignition in-duced by cylinder oil auto-ignition.The study reveals how cylinder oil auto-ignites and triggers pre-ignition,along with the key factors and underlying patterns involved.It further clarifies the decisive influence of the premixture's air-fuel equivalence ratio and uniformity,and the size and concentration of cylinder oil droplets on the occurrence of pre-ignition.Based on these findings,a pre-ignition suppression technology was developed and successfully applied in China's first independently developed 某型号 low-speed two-stroke dual-fuel engine.By improving the homogeneity of the premixture and reducing the accumulation of small cylinder oil droplets within the cylinder,combined with exhaust gas recirculation to control in-cylinder temperature and lower oxygen concentration,pre-ignition has been effectively sup-pressed,and the engine's power performance and fuel economy have been enhanced.Under operating conditions with a brake mean effective pressure as high as 1.9 MPa,no pre-ignition occurred in this engine.关键词
船用发动机/低速二冲程发动机/气体燃料/异常燃烧/早燃/气缸油/气缸油注油/油滴自燃/预混合气分布/预混合燃烧Key words
marine engine/low-speed two-stroke engine/gas fuels/abnormal combustions/pre-ignition/cylinder oil/cylinder oil feeding/oil auto-ignition/premixture distribution/premixed combustion分类
能源科技引用本文复制引用
冯立岩,刘利军,刘博,王自鑫,曲文静,龚震..船用低速二冲程气体燃料发动机早燃特性研究[J].哈尔滨工程大学学报,2026,47(2):235-247,13.基金项目
国家自然科学基金项目(52471315,52071061) （52471315,52071061）
国家重点研发计划项目(2019YFE0196100). （2019YFE0196100）
