Flow field characteristics of turbulent combustion diesel engine with swirl chamber

被引：0

作者：

Yuan, Wenhua ^{[1
]}

Long, Wuqiang ^{[2
]}

Fu, Jun ^{[1
]}

Liu, Yumei ^{[1
]}

机构：

[1] Department of Mechanical and Energy Engineering, Shaoyang University, Shaoyang,422004, China

[2] Institute of Internal Combustion Engine, Dalian University of Technology, Dalian,116024, China

来源：

Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2014年 / 45卷 / 08期

关键词：

Combustion - Engine cylinders - Flow fields - Engine pistons - Fuel injection - Flow of gases - Flow velocity;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

For turbulent combustion diesel engine with swirl chamber, flow characteristics of gas in cylinder were simulated by the FLUENT dynamic mesh technology during the piston moving at bottom dead centre to 2° crank angle of fuel injection preceding. Vector diagram of flow field, pressure and temperature variation in swirl chamber and cylinder were obtained. The results show that when the piston moves at bottom dead centre, the air in cylinder is compressed into swirl chamber and eddy is formed. Along with the continuous compression, the gas flow kinematic velocity increases gradually in swirl chamber, and pressure and temperature increase too. When 2° crank angle of fuel injection precedes, gas flow velocity near oil nozzle hole is about 24.1 m/s, pressure is about 2.3 MPa and temperature is about 845 K, which can better meet the need of mixing and combustion in diesel engine.

引用

页码：2617 / 2623