内燃机工程2025，Vol.46Issue(1)：9-16,26,9.DOI:10.13949/j.cnki.nrjgc.2025.01.002
缸内直喷氢内燃机控制参数对混合气形成及燃烧特性的影响研究
Effects of Control Parameters on Mixture Formation and Combustion Characteristics of a Direct Injection Hydrogen Internal Combustion Engine
摘要
Abstract
Based on an in-line 4-cylinder 4-stroke direct injection hydrogen internal combustion engine,a three-dimensional(3D)computational fluid dynamics(CFD)simulation model was established.The effects of engine control parameters on mixture formation and combustion characteristics were investigated.The results show that the peak values of in-cylinder pressure and heat release rate increase,and the combustion phases delay with the increase of equivalence ratio.The decreased equivalence ratio results in a similar but leaner mixture distribution in the cylinder.The mixture distribution that the rich mixture closer to the spark plug is the key to accelerating the flame propagation.With the delay of hydrogen injection timing,the peak values of in-cylinder pressure and heat release rate increase,the ignition delay period is shortened,and the combustion phase is advanced.The mixture distribution in the cylinder is a decisive factor in the effects of injection pressures and injection timings on the combustion process.关键词
直喷/氢发动机/内燃机/控制参数/混合气形成/燃烧特性Key words
direct injection/hydrogen engine/internal combustion engine/control strategy/mixture formation/combustion characteristic分类
能源与动力引用本文复制引用
李冬野,刘少鹏,胡祯,周磊,卫海桥..缸内直喷氢内燃机控制参数对混合气形成及燃烧特性的影响研究[J].内燃机工程,2025,46(1):9-16,26,9.基金项目
国家杰出青年科学基金项目(51825603)National Science Fund for Distinguished Young Scholars(51825603) （51825603）
