可再生能源2026，Vol.44Issue(6)：718-723,6.
预喷策略耦合EGR对氢气/柴油双燃料发动机燃烧和排放性能的影响
The influence of pilot strategy coupled with EGR on the combustion and emission performance of hydrogen/diesel dual fuel diesel engine
摘要
Abstract
The effects of hydrogen alternative ratio and pilot injection strategy coupled with EGR on engine performances were studied on a modified hydrogen/diesel dual fuel engine.The results show that under the operating condition of 1 500 r/min engine speed and 50%engine load,cylinder pressure,heat release rate and NOx emission were increased with the increase of hydrogen ratio,while the SOOT emission was decreased with the hydrogen/diesel dual fuel mode.Advancing pilot injection timing and increasing pilot injection quantity can effectively reduce SOOT emissions yet elevate NOx emissions.On the basis of pilot injection strategy,increasing the EGR rate from 22%to 32%,SOOT emissions gradually increase,while NOx emissions are significantly reduced.Under the test condition,the hydrogen/diesel dual fuel engine shows an excellent trade-off relation between NOx and SOOT emissions under the coupled configuration at a hydrogen substitution ratio of 6%,pilot injection timing of-27℃ A,pilot quantity of 4.6 mg and EGR rate is 27%.关键词
氢气/柴油双燃料发动机/预喷正时/预喷油量/EGR率/排放特性Key words
hydrogen/diesel dual fuel engine/pilot injection timing/pilot injection quantity/EGR ratio/emission characteristics分类
能源科技引用本文复制引用
孟源,陈晋兵..预喷策略耦合EGR对氢气/柴油双燃料发动机燃烧和排放性能的影响[J].可再生能源,2026,44(6):718-723,6.基金项目
150kW级高功重比通用航空重油活塞动力研发项目(202201120401018). （202201120401018）
