摘要(Abstract)：
为了改善内燃机燃烧与排放，探究双燃料反应活性控制压燃燃烧规律，分析缸内直喷喷油策略对发动机燃烧特性的影响，采用光学发动机，针对进气道喷射汽油、缸内直喷加氢催化生物柴油的双燃料燃烧模式，通过调节加氢催化生物柴油的喷油时刻和喷油比例，对发动机燃烧过程进行试验分析。结果表明：随着缸内直喷加氢催化生物柴油比例的增加，循环燃烧压力峰值和放热率峰值增大，燃烧相位提前，放热滞燃期与化学发光滞燃期均缩短；当喷油时刻靠近上止点时，缸内燃烧压力与放热率呈现先增后减的趋势，在喷油时刻为上止点前20°时缸内燃烧效果最好。
关键词(KeyWords)：压缩燃烧;喷油策略;加氢催化生物柴油;可视化
基金项目(Foundation): 国家自然科学基金项目(51876083)
作者(Author): 相英杰,王谦,刘旭,曹礼轩
DOI: 10.13349/j.cnki.jdxbn.20211216.002
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