【摘要】 论述了用多重网格法研究多缸内燃机的进气瞬态过程。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进气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进气管各歧管内气体流动的瞬态过程，分析了转速、进气系统长度和管径等参数对进气特性的影响更多还原

【Abstract】 The study on transient performance of intake charge in gasoline engine through multi net method is presented.The gas flow in intake pipe is calculated using full approximation storage multi net method and characteristic line theory.The transient process of gas flow in intake pipe is described objectively in multi cylinder engine.Effects of the intake system length,intake pipe diameter and engine speed on volumetric efficiency are discussed.更多还原