摘要
本文基于前期过浓后期强扰动快速燃烧的思想，提出了一种新的分隔式燃烧系统。它通过采用非对称布置的２喷孔连通道和导入较深的主燃室凹坑，形成一种喷流与涡流复合的强扰动二次混合方式，加速了主室燃烧过程，使副室容积比可以进一步减小。最终实现了排气烟度接近于０，微粒和ＮＯｘ以及燃油消耗率同时降低的综合特性改善。
A new combustion system of IDI diesel engine was investigated,which was based on the conception of rich combustion in the early stage as well as enhanced turbulent combustion in the later stage of diesel combustion period.A two hole non symmetrical connecting passage and a deep piston cavity were designed to produce the enhanced turbulent mixing combustion with a combination of jet and swirl,then the combustion in main chamber was remarkably accelerated.Finally,it was possible to reduce the volume of sub chamber.As a result,simultaneous improvments of NO x and particulate emission were achieved,especially the exhaust smoke was lowered to almost zero.
出处
《内燃机学报》
EI
CAS
CSCD
北大核心
1998年第2期154-160,共7页
Transactions of Csice
关键词
柴油机
废气排放
氮氧化物
微粒
燃烧系统
Diesel combustion,Emission, Nitric oxide,Particulate,Smoke,Connecting passage
