摘要
针对具有两根共轨管的高压共轨系统轨腔内压力波动的问题,建立了某型柴油机高压共轨系统仿真模型,并通过与试验数据对比验证了仿真模型的准确性。研究了喷油间隔时间、轨轨连接管长度及直径、喷油时序等关键参数对高压共轨管内不同位置处压力波动的影响。研究的结果表明,轨轨连接管的长度与直径对于连接管后的共轨管内压力波动有较大的影响,但是对于连接管前的共轨管内压力波动影响较小;同时喷油器的喷油会对相邻缸对应共轨管处的压力波动产生较大影响,而随着喷油间隔时间的增大,影响会随着轨腔内压力波动的衰减而减弱。
The simulation model of the high-pressure common rail system was established. And the accuracy of the simulation model was verified by comparing the simulation results with the experimental data. The effects of key structural parameters such as injection interval time, length and diameter of rail-rail connection pipe, and injection position on pressure fluctuation in the common rail pipe were studied. The results show that the length and diameter of the connection pipe have a great influence on the pressure fluctuation after the connection pipe, but less influence on the pressure fluctuation in the common rail pipe before the connection pipe. At the same time, the fuel injection process has a great impact on the pressure fluctuation in the corresponding common rail of the adjacent injector. However, with the increase of the fuel injection interval time, the influence decreases with the attenuation of pressure fluctuation.
作者
聂涛
刘振明
安士杰
NIE Tao;LIU Zhen-ming;AN Shi-jie(School of Power Engineering,Naval University of Engineering,Wuhan Hubei 430033,China)
出处
《计算机仿真》
北大核心
2021年第12期197-202,共6页
Computer Simulation
基金
国家自然科学基金资助项目(51879269)
海军工程大学自主立项基金(425317Q013,425317Q014)。
关键词
柴油机
高压共轨
仿真
压力波动
Diesel
Common rail
Simulation
Pressure fluctuation
