Effect of Injection Strategy on Particulate Emission in an Ethanol-Gasoline Engine

被引：0
|
作者：
Li Q. [1 ]
Fu J. [1 ,2 ]
Liu J. [1 ,2 ]
Liu Q. [1 ,2 ]
Shen Y. [1 ]
机构：
[1] Research Center for Advanced Powertrain Technology, Hunan University, Changsha
[2] Chongqing Research Institute of Hunan University, Chongqing
来源：
Neiranji Xuebao/Transactions of CSICE (Chinese Society for Internal Combustion Engines) | 2023年 / 41卷 / 05期
关键词：
emissions; ethanol; gasoline engine; injection strategy; particulate matter;
D O I：
10.16236/j.cnki.nrjxb.202305053
中图分类号：
学科分类号：
摘要：
The effects of various fuel injection strategies on particulate emission were experimentally studied on an ethanol-gasoline engine. The results show that compared with single injection and double injection，the particulate number(PN)of triple injection is reduced by nearly 50%，especially the nuclear PN. In terms of reducing particulate matter(PM)，the effect of multiple injection is more obvious than increasing the proportion of ethanol. Among E0，E30 and E85 fuels，the total PN decreases with the increase of ethanol proportion. As for transient conditions，it was found that under most conditions，the particle concentrations of triple injection and quintuple injection are lower than those of single injection. Especially，under cold start and heavy load conditions，multiple injection reduces the particle concentration by up to 80%. With the increase of ethanol volume fraction，the particle size distribution decreases significantly in most sizes，and the engine performance degradation and poor emissions are effectively avoided by reducing the knock phenomenon. It is indicated that ethanol blended fuel combined with multiple injection strategy can significantly improve particulate emissions without reducing engine performance. © 2023 Chinese Society for Internal Combustion Engines. All rights reserved.
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页码：450 / 457
页数：7
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