Numerical investigation of the effect of two-stage injection strategy on combustion and emission characteristics of a diesel engine

被引：12
|
作者：
Yu, Hanzhengnan [1 ,2 ]
Liang, Xingyu [1 ]
Shu, Gequn [1 ]
Wang, Yuesen [1 ]
Sun, Xiuxiu [1 ]
Zhang, Hongsheng [1 ]
机构：
[1] Tianjin Univ, State Key Lab Engines, Tianjin 300072, Peoples R China
[2] China Automot Technol & Res Ctr, Tianjin 300300, Peoples R China
来源：
APPLIED ENERGY | 2018年 / 227卷
基金：
中国国家自然科学基金;
关键词：
Two-stage injection; Two-stage injection interval; First-stage fuel injection proportion; Combustion characteristic; Emission characteristic; LOW-TEMPERATURE COMBUSTION; PILOT INJECTION; EGR RATE; PARAMETERS; NOX;
D O I：
10.1016/j.apenergy.2017.09.014
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
This work assessed two types of two-stage injection strategies for the operation of a diesel engine: pilot and early injection. The effects of the two-stage injection interval and the first-stage fuel injection proportion on the combustion and emission characteristics when employing these two injection strategies were investigated by numerical modeling, dividing the in-cylinder zone into three different regions. Variations in the NOx, soot, HC and CO emissions in each region were determined at various values of two-stage injection interval and first-stage fuel injection proportion for both strategies. The results demonstrate that, considering both the engine combustion and emission characteristics, a two-stage injection strategy in conjunction with an injection interval of 30-40 degrees CA and a first-stage fuel injection proportion of 30-60% is advisable.
引用
收藏
页码：634 / 642
页数：9
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