文档介绍：维普资讯
第 10卷第 2期燃烧科学与技术
2004年 4月 bustion of andScience Technology
电控五气门汽油机稀燃与废气再循环性能对比研究
刘书亮,任立红,王天友,许振忠
(,天津 300072;,天津 300072)
摘要:在一电控喷射稀薄燃烧五气门汽油机上,以稀薄燃烧汽油机电控开发系统及相应的废气再循环系统为试
验平台,对五气门汽油机在各种进气模式下实施稀混合气燃烧及废气再循环时的燃油消耗率和排放性能进行了详
细的试验研究,进而对本发动机的稀燃性能与废气再循环性能进行了比较,分析实施不同方法对发动机性能的不
,采用分层 EGR技术以后,EGR比率可达 32%,稀燃和分层废气再循环都有效地降低了
NO 排放,分层废气再循环对 NO 降低的效果更为明显,、低负荷,可以使排气中的
NO 降低 85%一95%.对于油耗,稀燃的效果显然要好于废气再循环, HC、
CO,分层 EGR对 HC、CO排放降低幅度不大.
关键词:电喷;五气门汽油机;稀薄燃烧;分层废气再循环;油耗和排放性能
中图分类号: 文献标志码:A 文章编号:1006-8740(2004)02-0102-05
Investigation parison ofEffect Between Lean-Burn and
EGR on Performance ofan EFI 5-Valve SI Engine
LIU ,REN ,WANG ,
( Key Laboratery of Engines,Tianjin300072,China; University,Tianjin of ( Laboratery
in Research Institute for bustion Engine,bustion 300072,China) Internal for Institute Research in
Abstract:Different methods were used to reduce the emission from a 5-valve EFI(electronic fuel injection)sp~-k ignition ignition injection)sp~-k fuel EFI(electronic 5-valve a from emission the reduce to used Abstract:Differentwere methods
engine modified t}l a sandwich type of charge stratified intake experiments studied the effects of bus— lean of effects sys