Research on knocking characteristics of kerosene spark-ignition engine for unmanned aerial vehicle (UAV) by numerical simulation

被引：28

作者：

Li, Jin ^{[1
]}

Zhou, Lei ^{[1
]}

Zhao, Zhenfeng ^{[2
]}

Wang, Xiaolin ^{[3
]}

Zhang, Fujun ^{[2
]}

机构：

[1] Harbin Inst Technol, Sch Mech Engn & Automat, Shenzhen 518055, Guangdong, Peoples R China

[2] Beijing Inst Technol, Sch Mech Engn, Beijing 100081, Peoples R China

[3] Australian Natl Univ, Res Sch Engn, Canberra, ACT 2601, Australia

来源：

THERMAL SCIENCE AND ENGINEERING PROGRESS | 2019年 / 9卷

关键词：

Kerosene; Knocking; Unmanned Aerial Vehicle; Spark-ignition engine; Numerical simulation;

D O I：

10.1016/j.tsep.2018.10.014

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The favorable physicochemical properties of kerosene have contributed to its widely application in aviation. However, knocking is more prone to take place in kerosene than in gasoline under the same conditions. This paper presents a study on the knock characteristics of a ROTAX914 engine that is fueled by kerosene. The knocking combustion process was simulated under various engine operating conditions. The effect of engine ignition timing, exhaust gas recirculation (EGR), and mixture concentration on the engine knocking combustion were studied based on a three-dimensional simulation. The results showed that engine knock could be effectively suppressed by delayed ignition timing. With increased EGR rates, knocking intensity was greatly suppressed.

引用

页码：1 / 10

页数：10

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