柴油机采用两段喷射实现均质预混合燃烧方式的试验研究  

Experimental research with two stage split fuel injection to realize homoginous charge premixed combustion in diesel engine

作　　者：许锋[1] 潘贵成[1] 杨晓英[1] 史德胜[1] 郭晓平[1] 

机构地区：[1]大连理工大学内燃机研究所,辽宁大连116024

出　　处：《热科学与技术》2004年第3期238-241,共4页Journal of Thermal Science and Technology

基　　金：国家重点基础研究 973项目子课题 ( 0 0 1CB2 0 92 0 2 )

摘　　要：在 1 1 3 5型直喷式柴油机上采用两个喷油泵分段喷油装置 ,实现了两段喷射。预喷射形成稀薄预混合气 ,促进燃油与空气的均匀混合 ,提高混合气形成质量 ,缩短主喷射的着火滞燃期 ,加快燃烧速率。试验表明 :预喷油量为 7.1 % ,主、副喷射间隔角 1 0℃ A时 ,获得了 NOx 排放明显降低、碳烟和油耗率都得到改善的效果。Stage split fuel injection equipment with two fuel supply pumps is adopted on the 135 type single D.I. diesel engine and two stages fuel injection is realized. Lean pre mixture is formed form pilot injection stage is shorten and combustion rate is quicken. The experimental results show that under preliminary fuel delivery is 7.1%, and interval angle between pilot and main injection fuel is 10 ℃A. nice test results are achieved for reduced NO X emission and improving soot and specific fuel consumption.

关 键 词：柴油机 两段喷射 均质预混合燃烧 油耗率 喷射间隔角 

分 类 号：TK421.2[动力工程及工程热物理—动力机械及工程]