中文摘要：

对高压共轨系统中的电磁阀喷油器进行建模,所建模型考虑流量限制阀和T型管的影响,考虑燃油流动时的压力损失且确定了损失的形式及施加位置,燃油密度和弹性模量仅视为压力的函数。通过Simulink仿真得到模型结果,并与试验结果对比以评价模型优劣。结果表明,考虑流量限制阀和T型管的喷油器模型仿真结果与试验结果误差不超过6%,不考虑二者影响的模型仿真结果与试验结果偏差较大;燃油密度、弹性模量视为常数时的模型仿真结果与将二者视为压力函数时的仿真结果相差较小,且与试验结果的仿真误差均不超过6%。

英文摘要：

The model of solenoid valve injector in high pressure common rail system is presented. The model considers the influences of flow limiting valve, T type pipe and the pressure loss caused by fuel flow. The forms and positions of the pressure loss were determined. In the model the fuel density and elastic modulus are only viewed as the functions of fuel pressure. The results obtained by Simulink software were compared with experimental results in order to assess the model. Results show that the simulation error of the model considering fl0w limit valve and T type pipe influences to the experimental results is less than 6% , while the results without these considerations have larger difference from the experimental results. The simulation difference between the model that views fuel density and elastic modulus as constants and the model that views both of them as the functions of pressure is small. The errors of the two models to the experimental results are less than 6%.