内燃机工程2025，Vol.46Issue(5)：9-18,10.DOI:10.13949/j.cnki.nrjgc.2025.05.002
分循环-多冲程压燃式增程器燃烧特性与性能优化
Combustion Characteristics and Performance Optimization of Split-Cycle Multi-Stroke Compression-Ignition Range Extender
摘要
Abstract
Theoretical analysis and experimental study were carried out for split-cycle multi-stroke compression-ignition range extender.The theoretical efficiency improvement potential of this new thermal cycle was demonstrated by ideal thermal cycle analysis and theoretical calculations.The results based on the prototype test bench show that the new thermal cycle enables this compression-ignition range extender to simultaneously achieve high thermal efficiency and high power output under high inlet pressure and high load conditions.Increasing the octane rating of the fuel by blending ethanol increases the premixed combustion ratio and accelerates in-cylinder combustion.Under high intake pressure and high load conditions,through the synergistic optimization of injection advance angle and injection pressure,the indicated thermal efficiency can be increased to 57.2%when the ethanol blending volume ratio reaches 30%.关键词
分循环/多冲程/压燃式增程器/热效率/性能优化Key words
split-cycle/multi-stroke/compression-ignition range extender/thermal efficiency/performance optimization分类
能源科技引用本文复制引用
吴凯剑,李卓航,任飞,朱天奎,朱磊,黄震..分循环-多冲程压燃式增程器燃烧特性与性能优化[J].内燃机工程,2025,46(5):9-18,10.基金项目
国家自然科学基金项目(U2241256,52071216,52106175) National Natural Science Foundation of China(U2241256,52071216,52106175) （U2241256,52071216,52106175）
