采用一种全新的数值模拟方法——时空守恒元和解元 (CE/ SE)方法对某六缸柴油机的充气过程进行模拟计算 ,分析了进气系统结构参数对充量系数的影响 ,提出了进气系统设计的基本思路。模拟计算和试验结果表明 ,进气歧管的结构参数对内燃机的性能影响很大。在进行进气系统设计时 ,重点应放在进气歧管结构参数的优选上 A new numerical simulation method, the space-time conservation element and solution element (CE / SE), was used to simulate the inflation process of a six-cylinder diesel engine. The influence of intake system structural parameters on the charge coefficient was analyzed. Gas system design of the basic ideas. The simulation results and the experimental results show that the structural parameters of the intake manifold greatly affect the performance of the internal combustion engine. During intake system design, the emphasis should be placed on the optimization of intake manifold structural parameters