机械科学与技术2025，Vol.44Issue(9)：1499-1506,8.DOI:10.13433/j.cnki.1003-8728.20230320
单级增压放气阀的开度对发动机性能的影响规律
Influence of Wastegate Opening of Single-stage Turbocharging on Performance of Diesel Engine
孙瑞婷 1张付军 1柏平新 2巴建栋 2李元帝2
作者信息
- 1. 北京理工大学机械与车辆学院,北京 100081
- 2. 陕西北方动力有限责任公司,陕西 宝鸡 721300
- 折叠
摘要
Abstract
A one-dimensional simulation model of diesel engine with single-stage turbocharging is established on the GT-Power simulation software platform,and the accuracy and rationality of the model are verified by comparing the experimental data with the simulation data.On this basis,the influence of the turbocharger wastegate opening(referring to the wastegate flow diameter)on the engine output power and specific fuel consumption at different engine speeds under steady state conditions is studied and summarized.Then,taking the highest output power and the lowest specific fuel consumption as the optimization objectives,realize the optimization of wastegate opening under various speeds of external characteristics.Finally,the influence of different wastegate openings on engine performance under engine acceleration dynamic conditions was investigated.It was found that the smaller the wastegate opening,the better the engine acceleration performance and the matching effect with compressor is better.关键词
柴油发动机/单级增压/放气阀开度/加速动态工况Key words
diesel engine/single-stage turbocharging/wastegate opening/accelerating dynamic condition分类
能源科技引用本文复制引用
孙瑞婷,张付军,柏平新,巴建栋,李元帝..单级增压放气阀的开度对发动机性能的影响规律[J].机械科学与技术,2025,44(9):1499-1506,8.
