发动机进气系统流动模拟与优化

Imitation and Optimization of Gas Flow in Intake System of Engine

介绍了容积法中的FVM-TVD(总参差减小的有限容积法)方法求解和这一领域的最新技术———时空守恒元和解元方法(CE-SE)。模拟分析了发动机进气系统的谐振效应,并针对不同的发动机工况对系统的结构参数进行了优化匹配,使发动机的动力性与经济性在全工况范围都得到了改善。

The FVM-TVD method,which is one of the filling and emptying, and space-time conservation element and solution element （CE-SE） method,which is the newest method in this field were introduced in this paper. The resonant effect of intake system of engine was also imitated and analyzed. And some structural parameters of the intake system were optimized and configured in different working conditions of the engine. As a result, dynamic and economic properties of the engine were improved in the range of all the working conditions.