Numerical simulation on characteristics of knock combustion of small two-stroke direct injection engine

被引：0
|
作者：
Bei T. [1 ]
Wei M. [1 ]
Liu R. [1 ]
Chang C. [1 ]
机构：
[1] College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing
来源：
| 2017年 / Huazhong University of Science and Technology卷 / 45期
关键词：
Angle of ignition advance; Asynchronous ignition phase; Combustion; Direct injection; Knock; Numerical simulation; Two-stroke engine;
D O I：
10.13245/j.hust.170207
中图分类号：
学科分类号：
摘要：
In order to understand the impact of ignition parameters on the knock of two-stroke kerosene aero-piston engine, the calculation model of the engine and the combustion chamber was established by using GT-Power and AVL Fire software. And the validity of the model was verified by the test data. The characteristics of average pressure and temperature, heat release rate, cumulative heat release rate and knock intensity distribution in the cylinder under 5 000 r/min and large load conditions were studied. The simulation and test results show that when angle of ignition advance changes from 15℃A to 35℃A, the torque, power, and average pressure, mean pressure and temperature, heat release rate and the accumulated heat release rate increase, accompanied by knock intensity tends to increase. When the asynchronous ignition phase changes from 0℃A to 5℃A, the torque and power shows slightly decreasing trend. Due to the turbulent kinetic energy near the spark plug increases, the flame propagation speed up, the reaction time at the end of the mixed gas becomes shorter, and the knock tendency of the two-stroke engine decreases. © 2017, Editorial Board of Journal of Huazhong University of Science and Technology. All right reserved.
引用
下载
收藏
页码：34 / 39
页数：5
相关论文
共 9 条
  • [1] Pickett B.M., Burnette P.F., Wells S.P., Et al., Fire safety tests comparing synthetic jet and diesel fuels with JP-8, Fire Safety Journal, 46, 3, pp. 89-95, (2011)
  • [2] Fernandes G., Fuschetto J., Filipi Z., Et al., Impact of military JP-8 fuel on heavy-duty diesel engine performance and emissions, Journal of Automobile Engineering, 221, 8, pp. 957-970, (2007)
  • [3] Balakrishnan J., Balasubramanian V., Chemical analysis of motor gasoline by superior kerosene and high speed diesel with reference to adulteration, Journal of Applied Chemical Research, 17, pp. 75-82, (2011)
  • [4] Wiegand A.L., Conversion of a micro, glow-ignition, two-stroke engine from nitromethane-methanol blend fuel to military jet propellant(JP-8), (2012)
  • [5] Yu G., Li J.G., Chang X.Y., Et al., Investigation of kerosene combustion characteristics with pilot hydrogen in model supersonic combustors, Journal of Propulsion and Power, 17, 6, pp. 1263-1272, (2001)
  • [6] Zhen X., Wang Y., Xu S., Et al., The engine knock analysis-an overview, Applied Energy, 92, pp. 628-636, (2012)
  • [7] Wang Z., Wang Y., Reitz R.D., Pressure oscillation and chemical kinetics coupling during knock processes in gasoline engine combustion, Energy & Fuels, 26, 12, pp. 7107-7119, (2012)
  • [8] Jamrozik A., Tutak W., Application of numerical modeling to optimize the thermal cycle of the internal combustion engine, Prace Naukowe Instytutu Matematyki i Informatyki Politechniki Czestochowskiej Selected Full Texts, 11, 2, pp. 43-52, (2012)
  • [9] Huang Q., Guo G., Research on improving performance of the motorcycle engine at low and medium speed, Journal of Advanced Manufacturing Systems, 7, 2, pp. 243-248, (2008)
1