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文中论述了用多重网格法研究多缸内燃机进气管内气流运动的瞬态过程 利用非线性方程全近似格式的多重网格法并结合特征线法对管内的气流运动进行了数值计算 ,直观地描述了多缸内燃机各管段内气体流动的瞬态过程 ,并分析了转速、管道长度和管径等参数对进气特性的影响
In this paper, the multi-grid method is used to study the transient process of airflow in the intake manifold of a multi-cylinder internal combustion engine. The multi-grid method of full approximation of nonlinear equations and the characteristic line method are used to calculate the airflow in the pipe. The transient process of gas flow in each tube of multi-cylinder internal combustion engine is described, and the influence of parameters such as rotational speed, pipe length and pipe diameter on intake air characteristics is analyzed