相继增压柴油机进排气系统建模与增压器切换点计算分析

Intake and exhaust system modeling and study on switch of sequential turbocharging diesel engines

建立了某船用中高速大功率相继增压柴油机的一维非定常流动的计算模型,编制了有限体积法ENO(基本无振荡)格式的程序.对较复杂的进排气管路采用模块化建模方法.利用该程序进行了相继增压柴油机工作过程的数值计算,计算结果与试验数据符合较好,对增压器的切换点进行了多方案计算分析.

In this paper a model of the dynamic simulation of the sequential turbocharging system engine is presented. The program is compiled on the basis of on ENO (essentially non-oscillatory) scheme of the finite volume approach. The program is utilized to simulate the steady state of the sequential turbocharging engine. The observed results show that the computational data is in good agreement with experimental results. Several schemes were analysed in terms of the switch of the sequential turbocharging system.