基于AMESim仿真的CNG发动机燃料喷射策略研究

Control methods study for CNG engine injection based on AMESim

建立了压缩天然气发动机电控系统的AMESim/Simulink联合仿真模型,对基于开关式氧传感器和基于宽域氧传感器(UEGO)的燃料控制策略在电控喷射系统中的应用进行深入研究。详细的阐述了模型建立的过程,并进行了仿真,通过仿真得到了压缩天然气发动机输出结果,同时通过对这些输出结果的分析,阐释了对不同氧传感器所采用的策略在电控喷射控制中所取得的控制效果是不同的。分析结果显示,利用AMESim和Simulink联合仿真能够实现物理模型和控制算法的良好结合,使控制算法的研究得到更具意义的结果。

The AMESim/Simulink simulation model was set up for the compressed natural gas(CNG) engine electronic control system,and the controlling methods were deeply studied for switching oxide sensors or UEGO in CNG engine injection.The modeling process was introduced in detail,the simulation was carried out for CNG engine with the model,and the simulation results were analyzed.When the switching oxide senor and the UEGO were different,the results were different too.At the same time,AMESim/Simulink simulation could...