Effects of exhaust gas recirculation on combustion and emissions of a homogeneous charge compression ignition engine fuelled with primary reference fuels

被引：18
|
作者：
Yao, M. [1 ]
Zhang, B. [1 ]
Zheng, Z. [1 ]
Chen, Z. [1 ]
Xing, Y. [1 ]
机构：
[1] Tianjin Univ, State Key Lab Engines, Tianjin 300072, Peoples R China
来源：
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING | 2007年 / 221卷 / D2期
关键词：
exhaust gas recirculation; octane number; homogeneous charge compression ignition;
D O I：
10.1243/09544070JAUTO102
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The effects of exhaust gas recirculation (EGR) of primary reference fuel on combustion and emissions of a homogeneous charge compression ignition (HCCI) engine are investigated. The results show that EGR delays the ignition timing, slows down the combustion reaction rate, reduces the pressure in cylinder, and extends the HCCI operation region. The maximum indicated thermal efficiency of fuels with different octane numbers appears in the region of high EGR rate and large fuel:air equivalence ratio. In the region of high EGR rate, hydrocarbon emissions rise up sharply as the EGR rate increases. Carbon monoxide emissions increase with the increase in EGR rate. Nitrogen oxides emissions increase abruptly as knocking combustion occurs.
引用
收藏
页码：197 / 213
页数：17
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