Simulation Research on Diesel Micro-injection Ignition Technology of Marine Engine
LIANG Jiewen
WEN Huabing
XU Changchun
LI Jingrui
SHEN Jianhua
Abstract：Aiming at the poor mixture of oil and gas in the cylinder of marine large-bore engine and the difficult ignition of nat-ural gas under lean burn,the simulation model of marine dual-fuel engine is established by CFD software to study the influence of diesel micro-injection ignition technology on marine engine performance.The results show that under the coupling of the two diesel injection parameters,advancing the diesel inject timing,increasing the injection angle,increasing the diesel nozzles number and increasing the injection pressure can improve the indicated thermal efficiency of the engine to a certain extent.In addition,advanc-ing the injection time and increasing the nozzles number have more obvious effects on improving oil and gas mixing and promoting combustion than increasing the injection angle and increasing the injection pressure.The coupling of diesel injection parameters is more beneficial to improve marine engine performance.
Keywords：marine enginemicro-injection ignitioninjection anglenozzles number
Publication Date：2025-12-20
Online Publishing Date：2026-03-23(First online date of this platform, not the publication date of the document)
Pages：7( 95-101 )