Effects of cyclic real time air/fuel ratios on combustion characteristics in an ethanol DI-HCCI engine

被引：0
|
作者：
Deng, Jun [1 ]
Liu, Yin-Tong [1 ]
Wu, Zhi-Jun [1 ]
Hu, Zong-Jie [1 ]
Li, Li-Guang [1 ,2 ]
机构：
[1] School of Automotive Studies, Tongji University, Shanghai 200092, China
[2] Chinesisch-Deutsches Hochschulkolleg, Tongji University, Shanghai 200092, China
来源：
Neiranji Xuebao/Transactions of CSICE (Chinese Society for Internal Combustion Engines) | 2013年 / 31卷 / 02期
关键词：
Diesel engines - Real time systems - Ignition - Normal distribution;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
HCCI combustion is much sensitive to cyclic variations. The transient air/fuel ratio has an important effect on combustion characteristics. Fast CO2/CO, HC and NOx measurement systems were employed to detect the transient emissions and real time air/fuel ratio of an ethanol fueled DI-HCCI. Effect of real time air/fuel ratio on combustion characteristics was analyzed. Results show that real time air/fuel ratio of continuous combustion cycles fluctuates to the averaged value and follows the normal distribution. For high latent heat of ethanol, the decreasing of temperature by increasing fuel injection quantity postpones combustion phase and increases combustion duration.
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页码：109 / 114
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