Study on improvement of fuel economy and reduction in emissions for stoichiometric gasoline engines

被引：10
|
作者：
Wei, Li
Ying, Wang [1 ]
Longbao, Zhou
Ling, Su
机构：
[1] Xian Jiaotong Univ, Sch Energy & Power Engn, Inst Internal Combust Engines, Xian 710049, Peoples R China
[2] Kong Jun Gong Cheng Da Xue, Xian, Peoples R China
[3] Chang An Grp, Chongqing, Peoples R China
来源：
APPLIED THERMAL ENGINEERING | 2007年 / 27卷 / 17-18期
关键词：
spark-ignition-engine; stoichiometric; air-fuel ratio; compression ratio; exhaust gas recirculation;
D O I：
10.1016/j.applthermaleng.2007.04.005
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
This paper presents the experimental study results carried out on an electronically controlled fuel injection 'stoichiometric gasoline engine' by using cold EGR and increasing 'compression ratio' to improve fuel economy and reduce emissions. After the compression ratio of the engine is raised from 8 to 11.8, and EGR rate and air swirl ratio are optimized, the fuel economy is improved by 6.02%, and the NO, and (NOx + HC) emissions are decreased by 52.96% and 44.94%, respectively at full-load speed characteristics. The calculation results of heat release rates according to the measured indicator diagram show that the combustion process is remarkably improved. (C) 2007 Published by Elsevier Ltd.
引用
收藏
页码：2919 / 2923
页数：5
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