魏江山，薛颖娴，杨名洋，马泽泰，邓康耀.基于增压发动机耦合仿真的涡轮性能预测模型研究[J].内燃机工程,2021,42(4):70-76.
基于增压发动机耦合仿真的涡轮性能预测模型研究
Research on Turbine Performance Prediction Coupled with Turbocharged Internal Combustion Engine Model
DOI：10.13949/j.cnki.nrjgc.2021.04.010
关键词:涡轮  增压发动机  一维模型  双通道  性能预测  一体化仿真
Key Words:turbine  turbocharged engine  1D model  twin-entry  performance prediction  integrative simulation
基金项目:船用低速机工程（一期）研制项目（工信部联装函[2017] 21号）
作者单位
魏江山，薛颖娴，杨名洋，马泽泰，邓康耀 上海交通大学 动力机械及工程教育部重点实验室，上海 200240 
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摘要:针对发动机排气管来流条件下涡轮一维性能预测模型进行深入研究，建立脉动与空间不均匀来流条件下涡轮性能预测模型，该模型预测得到的涡轮流通能力与试验误差小于2.0%。将该模型与发动机性能预测模型耦合，开发增压发动机自主性能仿真软件，试验验证结果表明发动机整机的性能预测误差小于3.5%。基于该模型，进一步构建了涡轮与发动机耦合匹配方法，并通过双通道涡轮几何优化设计，实现了发动机功率提升2.7%，同时燃油消耗率降低1.6%。
Abstract:A one-dimensional turbine performance model was investigated under real engine exhaust environment. The model is capable of performance prediction under pulsating boundary conditions and twin-entry scroll configurations. The discrepancies between experimental and simulated results were less than 20%. This turbine model was further coupled with a one-dimensional engine code and an in house engine performance prediction software was developed. The maximum discrepancy of the whole engine model was 3.5%. A joint engine-turbine design method was further developed based on this model and thus turbine geometries could be considered in the engine design process. A newly designed twin-entry turbine was coupled with the turbocharged engine. The engine power and brake specific fuel consumption could be improved by 2.7% and 1.6%.
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