为了对某三增压器相继增压柴油机切换策略进行研究，可以基于GT-POWER建立仿真模型，分别在急加速和稳态工况下进行STC（Sequential Turbo Charging）切换，并由仿真图像分析切换后的运行稳定性及空气阀延迟时间对柴油机性能的影响。研究表明，该STC切换策略下柴油机在急加速工况下响应迅速，运行参数稳定且处于合理范围；同时，空气阀开启延迟时间会显著影响柴油机稳态运行性能，在1TC～2TC以及2TC～3TC的切换过程中，当空气阀延迟2 s开启，在切换点有效燃油消耗率相较于延迟0 s时分别增大了6.42%和4.59%；而延迟1 s开启时，在切换点分别增大了2.12%和1.7%，而值得注意的是，0 s延迟开启会影响柴油机运行的稳定性。因此，可知当延迟开启时间在0～1 s时，能够实现最佳TC切换，并以此为同类柴油机提供切换过程案例分析。
This study investigates the switching strategy of a triple-turbocharger sequential turbocharging system for diesel engines through GT-POWER simulations, evaluating performance under both transient acceleration and steady-state conditions with particular focus on operational stability and air valve delay timing effects. The results demonstrate that the proposed strategy ensures rapid response while maintaining stable operating parameters during acceleration, with air valve delay timing significantly impacting steady-state performance - specifically, during first to second turbocharger stage transitions, 2-second and 1-second delays increase effective fuel consumption by 6.42% and 2.12% respectively compared to immediate opening, while second to third stage transitions show corresponding increases of 4.59% and 1.7%, with immediate opening adversely affecting engine stability. These findings conclusively establish that optimal turbocharger switching performance is achieved within the 0-1 second delay window, providing valuable insights for similar diesel engine applications.
2026,48(1): 120-126 收稿日期：2025-4-15
DOI：10.3404/j.issn.1672-7649.2026.01.017
分类号：U664.121
作者简介：刘昊喆(2001-),男,硕士研究生,研究方向为涡轮增压系统技术
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