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 Science andTechnology
四气门汽油机准均质稀混合气燃烧过程的实验研究
王天友,刘书亮,刘德新,冯洪庆,许洪军,刘文胜
(天津大学内燃机燃烧学国家重点实验室,天津 300072)
摘要:在一台未做任何结构改动的四缸、16气门进气道喷射产品发动机上,通过二次喷油技术形成优化的缸内
准均质稀混合气浓度分布,,
~ 2个空燃比单位,最高达 ;发动机燃油消耗同原电控喷射发动机相比可降低 ;在整个空燃比范围内,
经过优化的两次喷油稀燃的最低油耗较单次喷油稀燃下降 .
关键词:四气门汽油机;二次喷油;准均质稀薄燃烧
中图分类号: 文献标志码:A 文章编号:1006-8740(2004)02-0165-03
Experimental Study onLean bustion ina Four-Valves Gasoline Engine
WANGTian-you,LIU Shu-liang,LIUDe-xin,FENG Hong-qing,XUHong-jun,UU Wen-sheng
(State Key Laboratory of En~ne bustion,Tianjin 300072,China)University,Tianjin Laboratory Key (State
Abstract:Through tuning fuel injection-regulations of the two injection timings and proportions,an adequate air and fuel fuel and air proportions,an and adequate timings injection two the of injection-regulations Abstract:Throughfuel tuning
charge stratification wagcharge produced,which stratification was termed asquasi-homogenous mixture,and leantheburn Wag essfullyreal-
ized izedproducta in 4-valve engineS I whose structureswere changednot showtwice thatelectronic fuel
injection Can make the lean limit(A/F)increase by —2 units;the fuel consumption WaS improved remarkably in pa in al remarkably improved WaS —2limit(A/F)increase by consumptio