机械科学与技术2025，Vol.44Issue(8)：1317-1325,9.DOI:10.13433/j.cnki.1003-8728.20230309
高负荷下喷油策略对PODEn-汽油燃烧性能的影响
Effect of Injection Strategy on Gasoline/PODE dual-fuel Combustion Under High Load
摘要
Abstract
In order to better optimize the combustion characteristics of PODE-gasoline dual fuel,by changing the proportion of gasoline direct injection and the moment of gasoline direct injection,the combustion characteristics of PODE-gasoline dual fuel vehicles is simulated using software.The result shows that under large-load conditions,when the proportion of gasoline direct injection in the cylinder is 10%to 30%,the peak pressure of the cylinder is higher than that of the single airway injection,and the combustion performance index is improved;When the direct injection ratio is higher than 30%,the peak pressure of the cylinder is reduced and the combustion performance index is reduced;In the case of gasoline relatively late injection(-40°to-70°),with the advance of the injection moment,the combustion start point is delayed,the peak cylinder pressure is reduced,the peak of the heat release rate is reduced;and the gasoline is relatively early injection(-80°to-110°),with the advance of the injection moment,the combustion is in a bimodal state,the gasoline cylinder mixture is more layered,and a concentrated gasoline mixture is formed in the narrow area,which makes the combustion area wider and helps to reduce HC and CO emissions.关键词
数值模拟/喷射策略/直喷时刻/燃烧特性Key words
nmerical simulation/injection strategy/direct injection moment/combustion characteristics分类
能源科技引用本文复制引用
王伟男,张光德,钱大伟..高负荷下喷油策略对PODEn-汽油燃烧性能的影响[J].机械科学与技术,2025,44(8):1317-1325,9.基金项目
动力机械与工程教育部重点实验室开放基金项目(2955232) （2955232）
